FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Scanlon, LG Sandi, G AF Scanlon, LG Sandi, G TI Layered carbon lattices and their influence on the nature of lithium bonding in lithium intercalated carbon anodes SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE ab initio; Gaussian; lithium intercalation; coronene; tetraboroanthracene; carbon anodes AB Ab initio molecular orbital calculations have been used to investigate the nature of lithium bonding in stage 1 lithium intercalated carbon anodes. This has been approximated by using layered carbon lattices such as coronene, (C24H12), anthracene, and anthracene substituted with boron. With two coronene carbon lattices forming a sandwich structure and intercalated with either two, three, four or six lithiums, it has been found th dr the predominant mode of bonding for the lithium is at the carbon edge sites as opposed to bonding at interior carbon hexagon sites. With a single planar coronene molecule approximating a graphene sheet, the bonding of four lithiums with this molecule is near the interior carbon hexagon sites. For anthracene and boron substituted anthracene, Lithium bonding takes place within the carbon hexagon sites. The separation between lithiums in a sandwich type structure with two anthracenes in the eclipsed conformation is 5.36 Angstrom. The effect of boron substitution is to increases lattice flexibility by allowing the lattice to twist and Lithium to bond at adjacent: hexagon sites. (C) 1999 Elsevier Science S.A. All rights reserved. C1 USAF, Res Lab, Power Div, Battery Branch, Wright Patterson AFB, OH 45433 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Scanlon, LG (reprint author), USAF, Res Lab, Power Div, Battery Branch, Wright Patterson AFB, OH 45433 USA. NR 4 TC 8 Z9 10 U1 1 U2 13 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 176 EP 181 DI 10.1016/S0378-7753(99)00190-1 PG 6 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300030 ER PT J AU Amine, K Yasuda, H Yamachi, M AF Amine, K Yasuda, H Yamachi, M TI beta-FeOOH, a new positive electrode material for lithium secondary batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE iron oxy-hydroxide; tunnel structure; lithium battery; XPS ID ELECTROCHEMICAL PROPERTIES; OXIDES; LIFEO2 AB Beta-iron oxy-hydroxide, which exhibits a (2 X 2) tunnel-type structure similar to that of alpha-MnO2, was found to intercalate reversibly lithium in the tunnels. This material exhibits a potential slightly higher than 2 V with a capacity of 275 mAh/g and very good cyclic reversibility. X-ray Photoelectron Spectroscopy (XPS) investigation of discharged material showed that iron is reduced to the divalent state, and the lithium incorporated in the tunnels was purely ionic. This explains the good reversibility of this electrode material. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. Japan Storage Battery, Kyoto 601, Japan. RP Amine, K (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Amine, Khalil/K-9344-2013 NR 6 TC 67 Z9 67 U1 2 U2 34 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 221 EP 223 DI 10.1016/S0378-7753(99)00138-X PG 3 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300038 ER PT J AU Noailles, LD Johnson, CS Vaughey, JT Thackeray, MM AF Noailles, LD Johnson, CS Vaughey, JT Thackeray, MM TI Lithium insertion into hollandite-type TiO2 SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE lithium battery; titanium oxide; hollandite ID BATTERIES; OXIDES AB Hollandite-type TiO2 compounds, isostructural with alpha-MnO2, have been investigated as insertion electrodes for lithium batteries. Parent materials of KxTi8O16 (0 < x < 2) were treated with concentrated acid to yield TiO2 products that were essentially free of potassium. Lithium can be inserted into the (2 x 2) tunnels of the TiO2 structure chemically (with n-butyllithium) and electrochemically to an approximate composition Li0.5TiO2. The lithium ions can be easily removed from the lithiated structure by chemical reaction with bromine; cyclic voltammetry indicates that high voltages are required to remove the lithium by electrochemical methods. The poor electrochemical behavior of hollandite-TiO2 contrasts strongly with alpha-MnO2 electrodes. The superior properties of alpha-MnO2 electrodes are attributed to the presence of oxygen ions, either as H2O or Li2O, in the (2 X 2) channels; lithia-stabilized electrodes, 0.15Li(2)O . MnO2, show good cycling behavior and a rechargeable capacity of approximately 180 mA h/g. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. RP Thackeray, MM (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 15 TC 59 Z9 59 U1 3 U2 36 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 259 EP 263 DI 10.1016/S0378-7753(98)00244-4 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300046 ER PT J AU Tran, TD Derwin, DJ Zaleski, P Song, X Kinoshita, K AF Tran, TD Derwin, DJ Zaleski, P Song, X Kinoshita, K TI Lithium intercalation studies of petroleum cokes of different morphologies SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE lithium intercalation; petroleum cokes; multi-point N-2 gas adsorption analysis; electron microscopies; X-ray diffraction ID CARBONACEOUS MATERIALS AB Petroleum cokes with different morphologies are studied in lithium intercalation experiments. Several types of calcined petroleum cokes with varying microstructures and surface morphologies are heat treated at temperatures approaching 2800 degrees C. The physical and structural properties are studied by multi-point N-2 gas adsorption analysis, particle size measurements, electron microscopies and X-ray diffraction (XRD) analysis. Changes in the properties of materials during heat treatment are significant. The effects of the coke structures and heat treatment conditions on their electrochemical lithium intercalation behavior will be discussed. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Super Graphite, Chicago, IL 60638 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Berkeley, CA 94720 USA. RP Tran, TD (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 8 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 296 EP 299 DI 10.1016/S0378-7753(99)00207-4 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300054 ER PT J AU Kepler, KD Vaughey, JT Thackeray, MM AF Kepler, KD Vaughey, JT Thackeray, MM TI Copper-tin anodes for rechargeable lithium batteries: an example of the matrix effect in an intermetallic system SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE lithium battery; anode; intermetallic; tin alloy ID ION-BATTERIES; ALLOY ANODES; ELECTRODES; OXIDE AB Lithium batteries are typically constructed from a lithium cobalt oxide cathode and a carbon anode. We have investigated intermetallic anode materials based on tin, which can provide a high theoretical capacity at a slightly higher voltage (0-400 mV) than metallic lithium and thus reduce the safety concerns associated with the carbon anode. In particular, we have investigated the copper-tin system at around the composition Cu6Sn5 and have determined the effect on cycling and capacity of electrodes with various ratios of copper to tin. Anode compositions that are slightly copper rich (Cu6Sn4) were found to exhibit greater utilization of the tin than those with the stoichiometric bronze ratio (Cu6Sn5) or those having a slight excess of tin (Cu6Sn5). The differences in electrochemical behavior are explained in terms of an inert matrix model. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. RP Thackeray, MM (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Vaughey, John/0000-0002-2556-6129 NR 10 TC 164 Z9 171 U1 2 U2 51 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 383 EP 387 DI 10.1016/S0378-7753(99)00111-1 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300070 ER PT J AU Benedek, R Thackeray, MM Yang, LH AF Benedek, R Thackeray, MM Yang, LH TI First-principles calculation of atomic structure and electrochemical potential of Li1+xV3O8 SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE atomic structure; lithium battery; vanadium oxide; modelling ID LIXCOO2; CELLS AB Interest in the gamma-bronze, Li1+xV3O8, as a possible electrode material in rechargeable Li batteries has stimulated several experimental studies on this system. Detailed interpretation of the electrochemical and physical-property measurements is complicated by uncertainties regarding the structural arrangement of Li atoms as a function of x and by a phase transition between two monoclinic structures (gamma(a), gamma(b)) during intercalation. To elucidate the atomic structures and the phase transition, first-principles calculations are performed with the local-density-functional-theory (LDFT) planewave pseudopotential method for both gamma(a) and gamma(b) as a function of lithiation. Calculations for the compositions 1 + x = 1.5 and 1 + x = 4 confirm that the Li configuration determined in the existing X-ray diffraction structure refinements (at 1 + x = 1.2 and 1 + x = 4, respectively), coincide with the predicted low-energy configurations. Structure predictions were made at intermediate compositions, for which no experimental structure measurement is available. The order in which the tetrahedrally coordinated Li sites are filled at equilibrium as a function of x in gamma(a) was predicted. Calculated electrochemical potentials as a function of composition agree well with experimental data. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA USA. RP Benedek, R (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 17 TC 13 Z9 16 U1 1 U2 11 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 487 EP 490 DI 10.1016/S0378-7753(99)00208-6 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300090 ER PT J AU Johnson, CS Korte, SD Vaughey, JT Thackeray, MM Bofinger, TE Shao-Horn, Y Hackney, SA AF Johnson, CS Korte, SD Vaughey, JT Thackeray, MM Bofinger, TE Shao-Horn, Y Hackney, SA TI Structural and electrochemical analysis of layered compounds from Li2MnO3 SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE lithium battery; lithium manganese oxide; layered structure ID ALKALI-EXCHANGED DERIVATIVES; MANGANIC ACID; LIMNO2; BATTERIES; BEHAVIOR; OXIDE AB Layered lithium-manganese-oxide electrodes with the general formula Li2-xMnO3-x/2 (0 < x < 2), and structural analogs in which some of the manganese has been substituted by Zr or Al have been prepared and characterized by structural and electrochemical methods. Although the discharge capacity for electrode compositions that contained Zr or Al fades at a slower rate in lithium cells than an unsubstituted compound, Li0.106MnO2.053 (Li2-xMnO3-x/2, where x = 1.894), these materials deliver lower capacities (similar to 90 mA h/g after 20 cycles) than Li2-xMnO3-x/2 when cycled between 3.8 and 2.0 V at a C/8-C/10 rate. Under humid conditions or in contact with carbon, Li2-xMnO3-x/2 compounds transform slowly to gamma-MnO2 on standing at room temperature, whereas the Zr- and Al-substituted materials appear to be more resistant to the conversion to gamma-MnO2. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. Michigan Technol Univ, Dept Met & Mat Engn, Houghton, MI 49931 USA. RP Johnson, CS (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Vaughey, John/0000-0002-2556-6129 NR 20 TC 58 Z9 62 U1 5 U2 70 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 491 EP 495 DI 10.1016/S0378-7753(99)00248-7 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300091 ER PT J AU Shao-Horn, Y Hackney, SA Kahaian, AJ Kepler, KD Skinner, E Vaughey, JT Thackeray, MM AF Shao-Horn, Y Hackney, SA Kahaian, AJ Kepler, KD Skinner, E Vaughey, JT Thackeray, MM TI Structural fatigue in spinel electrodes in Li/Li-x[Mn-2]O-4 cells SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE Li/Li-x[Mn-2]O-4; spinel electrode; structural fatigue ID MANGANESE-DIOXIDE; ION BATTERIES; LITHIUM; PERFORMANCE; OXIDES AB Evidence of structural fatigue has been detected at the surface of discharged Li-x[Mn-2]O-4 spinel electrodes in Li/Li-x[Mn-2]O-4 cells. Transmission electron microscopy has revealed a degradation of the structural integrity of Li[Mn-2]O-4 crystals in electrodes that were cycled between 3.3 and 2.2 V, where the transformation from cubic Li-2[Mn-2]O-4 to tetragonal Li-2[Mn-2]O-4 is expected. It has also been observed in cells cycled at voltages above the 3 V plateau that domains of tetragonal Li-2[Mn-2]O-4 coexist with cubic Li[Mn-2]O-4, even at 500 mV above the thermodynamic voltage expected for the onset of the tetragonal phase. It is proposed that the presence of Li-2[Mn-2]O-4 on the particle surface may contribute to some of the capacity fade observed during cycling of Li/Li-x[Mn-2]O-4 cells. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. Michigan Technol Univ, Dept Met & Mat Engn, Houghton, MI 49931 USA. Univ Illinois, Sch Chem Sci, Dept Chem Engn, Urbana, IL 61801 USA. RP Thackeray, MM (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Vaughey, John/0000-0002-2556-6129 NR 17 TC 30 Z9 33 U1 1 U2 19 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 496 EP 499 DI 10.1016/S0378-7753(98)00223-7 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300092 ER PT J AU Gover, RKB Yonemura, M Hirano, A Kanno, R Kawamoto, Y Murphy, C Mitchell, BJ Richardson, JW AF Gover, RKB Yonemura, M Hirano, A Kanno, R Kawamoto, Y Murphy, C Mitchell, BJ Richardson, JW TI The control of nonstoichiometry in lithium nickel-cobalt oxides SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE LiNiO2; layered materials; cation disorder; rietveld analysis; neutron diffraction; reversibility ID LINIO2; DEINTERCALATION; CATHODE AB The nonstoichiometry of layered Li1-x(Ni0.8Co0.2)(1+x)O-2 has been controlled by varying the starting composition and preparation temperature. X-ray and neutron powder diffraction has been used to determine the composition of the materials prepared, and the electrochemical properties have been examined. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Kobe Univ, Fac Sci, Dept Chem, Kobe, Hyogo 6578501, Japan. Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP Kanno, R (reprint author), Kobe Univ, Fac Sci, Dept Chem, 1-1 Rokko Dai, Kobe, Hyogo 6578501, Japan. EM kanno@kobe-u.ac.jp NR 17 TC 23 Z9 28 U1 2 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 EI 1873-2755 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 535 EP 541 DI 10.1016/S0378-7753(99)00100-7 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300099 ER PT J AU Perkins, JD Bahn, CS Parilla, PA McGraw, JM Fu, ML Duncan, M Yu, H Ginley, DS AF Perkins, JD Bahn, CS Parilla, PA McGraw, JM Fu, ML Duncan, M Yu, H Ginley, DS TI LiCoO2 and LiCo1-xAlxO2 thin film cathodes grown by pulsed laser ablation SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE LiCoO2; LiCo0.5Al0.5O2; thin film cathodes; Li-ion batteries ID ROCK-SALT LICOO2; RECHARGEABLE BATTERIES; LITHIUM INTERCALATION; SPINEL; DEPOSITION; ELECTRODES; SYSTEM AB LiCoO2 and LiC0.5Al0.5O2 thin films have been grown by pulsed laser ablation on SnO2-coated glass substrates. For both stoichiometries, the resultant films are dense and uniaxially textured films with the Li and Co layers parallel to the substrate. In general, to grow LiCo0.5Al0.5O2 films, a laser flux roughly 80 mi pulse(-1) higher than that used for LiCoO2 films is required to achieve a similar deposition rate. LiCoO2 films grown at T-s = 600 degrees C and p[O-2] = 2000 mTorr have a typical grain size of similar to 100 nm. For constant current cycling between 3.8 and 4.2 V at 5 mu A, the LiCoO2 films have an initial discharge capacity of similar to 0.33 Li per LiCoO2 (89 (mA h) g(-1)) decreasing to similar to 0.18 Li/LiCoO2 (49 (mA h) g(-1)) after 100 cycles and have a continued capacity loss of similar to 0.25% per cycle. The LiCo0.5Al0.5O2 films grown to date have roughly 3 times less capacity than the LiCoO2 films and apparently a large asymmetry between Li extraction and reintercalation. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Colorado Sch Mines, Golden, CO 80401 USA. Univ Colorado, Boulder, CO 80309 USA. RP Perkins, JD (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 15 TC 43 Z9 45 U1 2 U2 27 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 675 EP 679 DI 10.1016/S0378-7753(99)00266-9 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300128 ER PT J AU Wolverton, C Zunger, A AF Wolverton, C Zunger, A TI First-principles theory of cation and intercalation ordering in LixCoO2 SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE LiCoO2; ordering; first-principles total energies; spinel; Li intercalation ID LITHIUM INTERCALATION; BATTERY VOLTAGES; SPINEL; PREDICTION; LICOO2; OXIDES AB Several types of cation- and vacancy-ordering are of interest in the LixCoO2 battery cathode material since they can have a profound effect on the battery voltage. We present a first-principles theoretical approach which can be used to calculate both cation- and vacancy-ordering patterns at both zero and finite temperatures. This theory also provides quantum-mechanical predictions (i.e., without the use of any experimental input) of battery voltages of both ordered and disordered LixCoO2/Li cells from the energetics of the Li intercalation reactions. Our calculations allow us to search the entire configurational space to predict the lowest-energy ground-state structures, search for large voltage cathodes, explore metastable low-energy states, and extend our calculations to finite temperatures, thereby searching for order-disorder transitions and states of partial disorder. We present the first prediction of the stable spinel structure LiCo2O4 for the 50% delithiated Li0.5CoO2. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Zunger, A (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Wolverton, Christopher/B-7542-2009; Zunger, Alex/A-6733-2013 NR 17 TC 13 Z9 14 U1 2 U2 27 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 680 EP 684 DI 10.1016/S0378-7753(99)00237-2 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300129 ER PT J AU Jansen, AN Kahaian, AJ Kepler, KD Nelson, PA Amine, K Dees, DW Vissers, DR Thackeray, MM AF Jansen, AN Kahaian, AJ Kepler, KD Nelson, PA Amine, K Dees, DW Vissers, DR Thackeray, MM TI Development of a high-power lithium-ion battery SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 9th International Meeting on Lithium Batteries CY JUL 12-17, 1998 CL EDINBURGH, SCOTLAND SP Electrochem Soc, Battery Div, Electrochem Soc Japan, Comm Battery Technol, Int Soc Electrochem, Danion, Eveready Battery Co Inc, LIBES, Lothian & Edinburgh Enterprise Ltd, OSTEC, SAFT, Solartron, Univ St Andrews DE lithium titanium oxide; lithium-ion; hybrid vehicle; safety AB Safety is a key concern for a high-power energy storage system such as will be required in a hybrid vehicle. Present Lithium-ion technology, which uses a carbon/graphite negative electrode, lacks inherent safety for two main reasons: (1) carbon/graphite intercalates lithium at near lithium potential, and (2) there is no end-of-charge indicator in the voltage profile that can signal the onset of catastrophic oxygen evolution from the cathode (LiCoO2). Our approach to solving these safety/life problems is to replace the graphite/carbon negative electrode with an electrode that exhibits stronger two-phase behavior further away from lithium potential, such as Li4Ti5O12. Cycle-life and pulse-power capability data are presented in accordance with the Partnership for a New Generation of Vehicles (PNGV) test procedures, as well as a full-scale design based on a spreadsheet model. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. RP Jansen, AN (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Bldg 205,9700 S Cass Ave, Argonne, IL 60439 USA. RI Amine, Khalil/K-9344-2013; Jansen, Andrew/Q-5912-2016 OI Jansen, Andrew/0000-0003-3244-7790 NR 3 TC 208 Z9 223 U1 7 U2 109 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP PY 1999 VL 81 BP 902 EP 905 DI 10.1016/S0378-7753(99)00268-2 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 262WE UT WOS:000084090300173 ER PT J AU Knoll, DA Rider, WJ Olson, GL AF Knoll, DA Rider, WJ Olson, GL TI An efficient nonlinear solution method for non-equilibrium radiation diffusion SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article DE radiation diffusion; non-equilibrium; Newton-Krylov methods ID KRYLOV METHODS; EQUATIONS; SYSTEMS AB A new nonlinear solution method is developed and applied to a non-equilibrium radiation diffusion problem. With this new method, Newton-like super-linear convergence is achieved in the nonlinear iteration, without the complexity of forming or inverting the Jacobian from a standard Newton method. The method is a unique combination of an outer Newton-based iteration and and inner conjugate gradient-like (Krylov) iteration. The effects of the Jacobian are probed only through approximate matrix-vector products required in the conjugate gradient-like iteration. The methodology behind the Jacobian-free Newton-Krylov method is given in detail. It is demonstrated that a simple, successive substitution, linearization produces an effective preconditioning matrix for the Krylov method. The efficiencies of different methods are compared and the benefits of converging the nonlinearities within a time step are demonstrated. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Div Appl Theoret & Computat Phys, Los Alamos, NM 87545 USA. RP Knoll, DA (reprint author), Univ Calif Los Alamos Natl Lab, Div Appl Theoret & Computat Phys, XHM MS D413, Los Alamos, NM 87545 USA. NR 15 TC 54 Z9 60 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD SEP PY 1999 VL 63 IS 1 BP 15 EP 29 DI 10.1016/S0022-4073(98)00132-0 PG 15 WC Optics; Spectroscopy SC Optics; Spectroscopy GA 205BW UT WOS:000080802300002 ER PT J AU Vo-Dinh, T Stokes, DL Griffin, GD Volkan, M Kim, UJ Simon, MI AF Vo-Dinh, T Stokes, DL Griffin, GD Volkan, M Kim, UJ Simon, MI TI Surface-enhanced Raman scattering (SERS) method and instrumentation for genomics and biomedical analysis SO JOURNAL OF RAMAN SPECTROSCOPY LA English DT Article ID ARTIFICIAL CHROMOSOME LIBRARY; DNA; SPECTROMETRY; PROBES AB The development of a surface-enhanced Raman scattering (SERS) method and instrument for use in biomedical and genomics analysis is described. The technology uses DNA gene probes based on SERS labels for gene detection and DNA mapping. The detection method uses nanostructured metallic substrates as SERS-active platforms. The surface-enhanced Raman gene (SERGen) probes can be used to detect DNA targets via hybridization to DNA sequences complementary to these probes. The probes do not require the use of radioactive labels and have great potential to provide both sensitivity and selectivity. Advanced instrumental systems designed for point-source spectral measurements and for multi-spectral imaging (MSI) are described. The MSI concept allows recoding the entire SERS spectrum for every pixel on the two-dimensional hybridization platform in the field of view with the use of a rapid-scanning solid-state device, such as the acousto-optic tunable filter (AOTF), The usefulness of the SERGen approach and its applications in biomedical diagnostics, high-throughput analysis and DNA mapping and sequencing are discussed, Copyright (C) 1999 John Wiley & Sons, Ltd. C1 Oak Ridge Natl Lab, Adv Monitoring Dev Grp, Oak Ridge, TN 37831 USA. CALTECH, Div Biol, Pasadena, CA 91125 USA. RP Vo-Dinh, T (reprint author), Oak Ridge Natl Lab, Adv Monitoring Dev Grp, Oak Ridge, TN 37831 USA. NR 20 TC 95 Z9 96 U1 0 U2 21 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0377-0486 J9 J RAMAN SPECTROSC JI J. Raman Spectrosc. PD SEP PY 1999 VL 30 IS 9 BP 785 EP 793 DI 10.1002/(SICI)1097-4555(199909)30:9<785::AID-JRS450>3.0.CO;2-6 PG 9 WC Spectroscopy SC Spectroscopy GA 241KE UT WOS:000082881500008 ER PT J AU Dabrowski, B Dybzinski, R Bukowski, Z Chmaissem, O Jorgensen, JD AF Dabrowski, B Dybzinski, R Bukowski, Z Chmaissem, O Jorgensen, JD TI Oxygen content and structures of La1-xCaxMnO3+d as a function of synthesis conditions SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article DE colossal magnetoresistance; cation nonstoichiometry; thermogravimetry; structural properties ID DEFECT CHEMISTRY; PHASE-DIAGRAM; GIANT MAGNETORESISTANCE; TRANSPORT-PROPERTIES; SINGLE-CRYSTALS; LAMNO3+DELTA; LAMNO3+/-DELTA; PEROVSKITES; STABILITY; NONSTOICHIOMETRY AB Using thermogravimetric analysis measurements, oxygen content was measured for La1-xCaxMnO3+d(0 less than or equal to x less than or equal to 0.38) samples prepared at high oxygen pressure. The oxygen content was found to decrease uniformly with increasing x for samples annealed at 12 and 140 atm O-2 at 800 degrees C, slowly tooled in 1, 20, and 100% O-2 as well as for samples in thermal equilibrium at high temperatures of similar to 1000-1400 degrees C, Annealing at a specific temperature and oxygen pressure leads to approximately constant hole doping over an extended range of Ca substitution x, The most favorable synthesis conditions for obtaining stoichiometric, d = 0, samples were determined, The data suggest that several studies reported in the literature were done on significantly nonstoichiometric materials. Structural results show that, in addition to the orthorhombic Pbnm O' (c/a500 ppmv), methane production and hydrogen utilization by the bed medium microbes appeared to be inhibited. CT removal by the biofilter decreased when the hydrogen supply was removed from the biofilter inlet, indicating that hydrogen acted as the electron donor for reductive dechlorination. The removal efficiency and relatively low empty bed residence times demonstrated by these laboratory-scale biofilters indicate that anaerobic biofiltration of CT may be a feasible full-scale process. C1 Lockheed Martin Idaho Technol Co, Dept Biotechnol, Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RP Lee, BD (reprint author), Lockheed Martin Idaho Technol Co, Dept Biotechnol, Idaho Natl Engn & Environm Lab, POB 1625, Idaho Falls, ID 83415 USA. NR 20 TC 5 Z9 5 U1 1 U2 3 PU AIR & WASTE MANAGEMENT ASSOC PI PITTSBURGH PA ONE GATEWAY CENTER, THIRD FL, PITTSBURGH, PA 15222 USA SN 1047-3289 J9 J AIR WASTE MANAGE JI J. Air Waste Manage. Assoc. PD SEP PY 1999 VL 49 IS 9 BP 1068 EP 1074 PG 7 WC Engineering, Environmental; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 240NW UT WOS:000082832900006 PM 10513482 ER PT J AU Huckaby, JL Evans, JC Sklarew, DS Jensen, L Wilmarth, SR AF Huckaby, JL Evans, JC Sklarew, DS Jensen, L Wilmarth, SR TI Representative sampling of high-level radioactive waste tank headspaces SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION LA English DT Article AB Headspaces of the underground high-level radioactive waste-storage tanks at the U.S. Department of Energy's Hanford Site have been sampled to resolve tank safety and industrial hygiene issues and to estimate regulated air pollutant emissions. Because sampling these tanks is difficult and expensive, samples have been collected from a single location of the headspaces, based on the supposition that this would provide representative samples. In most tanks, mixing of vapors occurs because of thermally driven convection from heat generated by radioactive decay of the waste. However, in some low-temperature tanks, the ground temperature above the tank may be warmer than the waste, minimizing thermally induced convection, and raising the concern that samples from a single location may not be representative. To resolve this issue, six samples at different vertical and horizontal locations were taken from each of three low-temperature tanks and analyzed for ammonia, water, permanent gases, total non-methane organic compound concentration, and selected organic vapors. Statistical analysis of the data indicated that the tanks did not exhibit significant horizontal or vertical concentration gradients. C1 Pacific NW Natl Lab, Environm Technol Dept, Richland, WA 99352 USA. Lockheed Martin Hanford Corp, Proc Engn Dept, Richland, WA 99352 USA. RP Huckaby, JL (reprint author), Pacific NW Natl Lab, Environm Technol Dept, POB 999, Richland, WA 99352 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU AIR & WASTE MANAGEMENT ASSOC PI PITTSBURGH PA ONE GATEWAY CENTER, THIRD FL, PITTSBURGH, PA 15222 USA SN 1047-3289 J9 J AIR WASTE MANAGE JI J. Air Waste Manage. Assoc. PD SEP PY 1999 VL 49 IS 9 BP 1075 EP 1081 PG 7 WC Engineering, Environmental; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 240NW UT WOS:000082832900007 ER PT J AU Littlejohn, D Lucas, D AF Littlejohn, D Lucas, D TI Vapor pressure measurement system for heavy crude oils SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION LA English DT Article AB We describe a new, simple apparatus that permits accurate measurement of reactive organic carbon vapor pressure from heavy crude oils when used with a gas chromatograph. The apparatus is analogous to the Reid vapor pressure apparatus that is used for vapor pressure measurement of light hydrocarbons. This system overcomes many of the shortcomings experienced when the Reid method is applied to heavy crudes. We explain the operation of the system and present results from measurement of heavy crudes from Southern California. Measurements on oil samples collected from storage tanks agreed well with analysis of headspace gases in the tanks. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Littlejohn, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 6 TC 1 Z9 1 U1 0 U2 1 PU AIR & WASTE MANAGEMENT ASSOC PI PITTSBURGH PA ONE GATEWAY CENTER, THIRD FL, PITTSBURGH, PA 15222 USA SN 1047-3289 J9 J AIR WASTE MANAGE JI J. Air Waste Manage. Assoc. PD SEP PY 1999 VL 49 IS 9 BP 1103 EP 1109 PG 7 WC Engineering, Environmental; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 240NW UT WOS:000082832900011 ER PT J AU Hu, MZC Hunt, RD Payzant, EA Hubbard, CR AF Hu, MZC Hunt, RD Payzant, EA Hubbard, CR TI Nanocrystallization and phase transformation in monodispersed ultrafine zirconia particles from various homogeneous precipitation methods SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID X-RAY-DIFFRACTION; HIGH-TEMPERATURE; CONTROLLED HYDROLYSIS; CRYSTALLIZATION; ZRO2; GROWTH; GELS; STABILIZATION; CATALYSTS; MECHANISM AB Monodispersed ultrafine (nano- to micrometer) zirconia precursor powders were synthesized by three different physicochemical methods: (I) forced hydrolysis, (II) homogeneous precipitation in inorganic salt solutions, and (III) hydrolysis/condensation of alkoxide, The forced hydrolysis method; produced monoclinic nanocrystalline particles (cube shaped) of nanometer scale, which depended largely on the initial salt concentration. Methods II and III, both involving the use of alcohol as a solvent, exhibited a faster particle formation rate and generated amorphous ultrafine (submicrometer) monodispersed microspheres, indicating that the presence of alcohol may have stimulated particle nucleation due to its low dielectric property (and, thus, the low solubility of nucleus species in mixed water-alcohol solutions). Nucleation and growth of the particles in solutions are discussed based on the measurements obtained by small-angle X-ray scattering (SAXS) and dynamic light scattering (DLS), High-temperature X-ray diffraction (HTXRD) and TGA/DTA studies elucidated the differences in phase transformation for different types of powders. The most interesting finding was the nonconventional monoclinic nanocrystal nucleation and growth that occurred prior to transformation to the tetragonal phase (at 1200 degrees C) during the heat treatment of the nanocrystalline powders produced by the forced hydrolysis. C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Ceram, Oak Ridge, TN 37831 USA. RP Hu, MZC (reprint author), Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. RI Payzant, Edward/B-5449-2009; OI Payzant, Edward/0000-0002-3447-2060; Hu, Michael/0000-0001-8461-9684 NR 43 TC 99 Z9 99 U1 1 U2 35 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 USA SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 1999 VL 82 IS 9 BP 2313 EP 2320 PG 8 WC Materials Science, Ceramics SC Materials Science GA 291XA UT WOS:000085763600004 ER PT J AU Schwartz, RW Clem, PG Voigt, JA Byhoff, ER Van Stry, M Headley, TJ Missert, NA AF Schwartz, RW Clem, PG Voigt, JA Byhoff, ER Van Stry, M Headley, TJ Missert, NA TI Control of microstructure and orientation in solution-deposited BaTiO3 and SrTiO3 thin films SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article; Proceedings Paper CT 100th Annual Meeting of the American-Ceramic-Society CY MAY 03-06, 1998 CL CINCINNATI, OHIO SP Amer Ceram Soc ID CHEMICAL-SOLUTION DEPOSITION; SOL-GEL METHOD; DIELECTRIC-PROPERTIES; EPITAXIAL-GROWTH; ELECTRICAL-PROPERTIES; LATTICE MISMATCH; PEROVSKITE FILMS; CRYSTALLIZATION; PRECURSORS; YBA2CU3O7 AB Columnar and highly oriented (100) BaTiO3 and SrTiO3 thin films were Prepared by a chelate-type chemical solution deposition (CSD) process by manipulation of film deposition-condition and seeded growth techniques. Randomly oriented columnar films were prepared on platinum-coated Si substrates by a multilayering process in which nucleation of the perovskite phase was restricted to the substrate or underlying layers by control of layer thickness. The columnar films displayed improvements in dielectric constant and dielectric loss compared to the fine-grain equiaxed films that typically result from CSD methods. Highly oriented BaTiO3 and SrTiO3 thin films were fabricated on LaAlO3 by a seeded growth process that appeared to follow a standard "two-step" growth mechanism that has been previously reported. The film transformation process involved the:bulk nucleation of BaTiO3 throughout the film; followed by the consumption of this matrix by an epitaxial overgrowth process originating at the seed layer. Both BaTiO3 and PbTiO3 seed layers were effective in promoting the growth of highly oriented (100) BaTiO3 films. Based on the various processing factors that can influence thin film microstructure, the decomposition pathway involving the formation of BaCO3 and TiO2 appeared to dictate thin film microstructural evolution. C1 Clemson Univ, Gilbert C Robinson Dept Ceram & Mat Engn, Clemson, SC 29634 USA. Sandia Natl Labs, Mat & Proc Sci Directorate, Albuquerque, NM 87185 USA. RP Schwartz, RW (reprint author), Clemson Univ, Gilbert C Robinson Dept Ceram & Mat Engn, Clemson, SC 29634 USA. NR 49 TC 118 Z9 118 U1 6 U2 66 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 USA SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 1999 VL 82 IS 9 BP 2359 EP 2367 PG 9 WC Materials Science, Ceramics SC Materials Science GA 291XA UT WOS:000085763600010 ER PT J AU Osborne, MC Hay, JC Snead, LL Steiner, D AF Osborne, MC Hay, JC Snead, LL Steiner, D TI Mechanical- and physical-property changes of neutron-irradiated chemical-vapor-deposited silicon carbide SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID INDENTATION TOUGHNESS EQUATIONS; RESOLUTION ELECTRON-MICROSCOPY; FRACTURE-TOUGHNESS; FUSION-REACTORS; CERAMICS; NANOINDENTATION; INDENTER; DENSITY; CRACKS AB Indentation and density measurements have revealed important changes in the mechanical and physical properties of silicon carbide (SiC) due to neutron irradiation. Specifically, the changes in the elastic modulus, hardness, fracture toughness, and density with irradiation have provided an understanding of the expected performance of SiC and SiC composites in nuclear applications. After the accumulated damage has saturated, these mechanical properties were affected primarily by the irradiation temperature, Chemical-vapor-deposited (CVD) SiC was irradiated above the saturation fluence and yielded volumetric swelling of 2.6% and 1.3% for irradiation temperatures of 100 degrees-150 degrees C and 500 degrees-550 degrees C, respectively. At the same respective temperatures, the elastic modulus decreased from an unirradiated value of 503 GPa to similar to 420 and 450 GPa. Conversely, the hardness increased from 36 GPa for the unirradiated CVD SiC to 38 and 40 GPa for the samples irradiated at 100 degrees-150 degrees C and 500 degrees-550 degrees C, respectively, Interestingly, these two independent properties approached almost-constant levels after exposure to a fluence of 0.5 x 10(25) n/m(2), E > 0.1 MeV, Indentation fracture toughness measurements, which were within the range of values in the literature for conventional fracture toughness procedures for SiC, increased from similar to 2.8 MPa.m(1/2) for the unirradiated samples to 3.7 and 4.2 MPa.m(1/2) for the samples that were irradiated at 100 degrees-150 degrees C and 500 degrees-550 degrees C, respectively. C1 Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Rensselaer Polytech Inst, Environm & Energy Engn Dept, Troy, NY 12180 USA. RP IBM Corp, Thomas J Watson Res Ctr, Res, Yorktown Hts, NY 10598 USA. NR 47 TC 33 Z9 33 U1 0 U2 11 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0002-7820 EI 1551-2916 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 1999 VL 82 IS 9 BP 2490 EP 2496 PG 7 WC Materials Science, Ceramics SC Materials Science GA 291XA UT WOS:000085763600027 ER PT J AU Pasa-Tolic, L Jensen, PK Anderson, GA Lipton, MS Peden, KK Martinovic, S Tolic, N Bruce, JE Smith, RD AF Pasa-Tolic, L Jensen, PK Anderson, GA Lipton, MS Peden, KK Martinovic, S Tolic, N Bruce, JE Smith, RD TI High throughput proteome-wide precision measurements of protein expression using mass spectrometry SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ESCHERICHIA-COLI PROTEINS; ELECTROSPRAY-IONIZATION; POLYACRYLAMIDE GELS; GENE-EXPRESSION; IDENTIFICATION C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Smith, RD (reprint author), Pacific NW Lab, Environm Mol Sci Lab, POB 999, Richland, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 26 TC 164 Z9 167 U1 2 U2 20 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 1 PY 1999 VL 121 IS 34 BP 7949 EP 7950 DI 10.1021/ja991063o PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 234EG UT WOS:000082471100032 ER PT J AU Berry, SM Reese, CS Larkey, PD AF Berry, SM Reese, CS Larkey, PD TI Bridging different eras in sports SO JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION LA English DT Article DE aging function; bridge model; hierarchical model; population dynamics; random curve ID STATISTICAL-ANALYSIS; HITTING STREAKS; BASEBALL AB This article addresses the problem of comparing abilities of players from different eras in professional sports. We study National Hockey League players, professional golfers, and Major League Baseball players from the perspectives of home run hitting and hitting for average. Within each sport, the careers of the players overlap to some extent. This network of overlaps, or bridges, is used to compare players whose careers took place in different eras. The goal is not to judge players relative to their contemporaries, but rather to compare all players directly. Hence the model that we use is a statistical time machine. We use additive models to estimate the innate ability of players, the effects of aging on performance, and the relative difficulty of each year within a sport. We measure each of these effects separated from the others. We use hierarchical models to model the distribution of players and specify separate distributions for each decade, thus allowing the "talent pool" within each sport to change. We study the changing talent pool in each sport and address Gould's conjecture about the way in which populations change. Nonparametric aging functions allow us to estimate the league-wide average aging function. Hierarchical random curves allow for individuals to age differently from the average of athletes in that sport. We characterize players by their career profile rather than a one-number summary of their career. C1 Texas A&M Univ, Dept Stat, College Stn, TX 77843 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Carnegie Mellon Univ, Sch Publ Policy & Management, Pittsburgh, PA 15213 USA. RP Berry, SM (reprint author), Texas A&M Univ, Dept Stat, College Stn, TX 77843 USA. NR 24 TC 23 Z9 23 U1 1 U2 2 PU AMER STATISTICAL ASSOC PI ALEXANDRIA PA 1429 DUKE ST, ALEXANDRIA, VA 22314 USA SN 0162-1459 J9 J AM STAT ASSOC JI J. Am. Stat. Assoc. PD SEP PY 1999 VL 94 IS 447 BP 661 EP 676 DI 10.2307/2669973 PG 16 WC Statistics & Probability SC Mathematics GA 239ET UT WOS:000082756400001 ER PT J AU Xu, S Melendres, CA Park, JH Kamrath, MA AF Xu, S Melendres, CA Park, JH Kamrath, MA TI Structure and morphology of electrodeposited CaCO3: X-ray diffraction and microscopy studies SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID TRACE-ELEMENT INCORPORATION; CALCIUM-CARBONATE; SURFACE-STRUCTURE; CRYSTAL-GROWTH; SEA-WATER; KINETICS; CRYSTALLIZATION; MAGNESIUM AB The structure and morphology of electrochemically deposited calcium carbonate have been investigated as a function of temperature, magnesium ion concentration, organic inhibitors, and deposition potential. At 25 degrees C, microcrystals of calcite grew with their [104] planes parallel to the electrode surface. In the presence of magnesium chloride, a mixed phase of calcite and magensium calcite, as well as aragonite, was formed. Organic inhibitors varied in their effectiveness in inhibiting calcite formation, e.g., 2-phosphonobutane, 1,2,4-tricarboxylic acid (PBTC) performed better than ethanediphosphonic acid (EDPA). (C) 1999 The Electrochemical Society. S0013-4651(98)02-054-0. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Nalco Chem Co, Naperville, IL 60563 USA. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. RP Xu, S (reprint author), Argonne Natl Lab, Div Chem Technol, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 26 TC 30 Z9 30 U1 0 U2 10 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD SEP PY 1999 VL 146 IS 9 BP 3315 EP 3323 DI 10.1149/1.1392473 PG 9 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 236PK UT WOS:000082607600028 ER PT J AU Dinh, HN Vanysek, P Birss, VI AF Dinh, HN Vanysek, P Birss, VI TI The effect of film thickness and growth method on polyaniline film properties SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID CONDUCTIVE POLYMERS; ELECTROCHEMICAL IMPEDANCE; AQUEOUS-ELECTROLYTES; COATED ELECTRODES; REDUCTION; ANILINE; NUCLEATION; OXIDATION; KINETICS; MODEL AB The properties of polyaniline (PANI) films, grown electrochemically on Au using the potential sweep method to two different upper potential limits (type I and II) to various thicknesses in sulfuric acid solution, were studied systematically using cyclic voltammetry. ne impedance, and for the first time, by tracking die rate of the hydrogen evolution reaction (HER). The HER results show that hath films follow the nucleation and growth mechanism initially and that continuing growth occurs primarily at the outer PANI surface. Because type II PANI films are formed at a much more rapid rate than type I films, a greater amount of anodic degradation products are incorporated into type I films. Impedance and HER measurements show that type II films, compared for the first time in this work with type I films, have a more open PANI film/Au interfacial structure. A new observation is that the cyclic voltammograms for type I films show a prepeak which is absent for type II films, Furthermore, constant PANI redox peak potentials are observed for type I films, whereas these shift with film thickness for type II films. This unique observation implies that type II films undergo structural changes during their growth, while type I films remain more uniform. (C) 1999 The Electrochemical Society. S0013-4651(98)12-003-7. All rights reserved. C1 Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada. RP Dinh, HN (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Vanysek, Petr/A-1949-2016 OI Vanysek, Petr/0000-0002-5458-393X NR 54 TC 41 Z9 43 U1 1 U2 8 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD SEP PY 1999 VL 146 IS 9 BP 3324 EP 3334 DI 10.1149/1.1392474 PG 11 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 236PK UT WOS:000082607600029 ER PT J AU Wendt, K Blaum, K Muller, P Nortershauser, W Schmitt, A Trautmann, N Bushaw, BA AF Wendt, K Blaum, K Muller, P Nortershauser, W Schmitt, A Trautmann, N Bushaw, BA TI Laser mass spectrometry for selective ultratrace determination SO JOURNAL OF THE KOREAN PHYSICAL SOCIETY LA English DT Article; Proceedings Paper CT 6th Symposium on Laser Spectroscopy CY NOV 03-04, 1998 CL KOREA ATOM ENERGY RES INST, TAEJON, SOUTH KOREA HO KOREA ATOM ENERGY RES INST ID IONIZATION SPECTROSCOPY; ENVIRONMENTAL-SAMPLES; CALCIUM; SR-90 AB Resonance ionization mass spectrometry has been explored in respect to its capabilities for isobaric suppression, isotopic selectivity, and overall efficiency. Theoretical calculations within the density matrix formalism on coherent multi-step excitation processes predict high specifications, which have been confirmed by spectroscopic measurements in Ca and which make the technique attractive for ultratrace detection. Analytical applications are found in the determination of the ultrarare isotope Ca-41 for cosmochemical, radiodating, and medical applications. C1 Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Univ Mainz, Inst Kernchem, D-55099 Mainz, Germany. Pacific NW Lab, Richland, WA 99352 USA. RP Wendt, K (reprint author), Univ Mainz, Inst Phys, D-55099 Mainz, Germany. RI Mueller, Peter/E-4408-2011; Wendt, Klaus/D-7306-2011; Nortershauser, Wilfried/A-6671-2013 OI Mueller, Peter/0000-0002-8544-8191; Wendt, Klaus/0000-0002-9033-9336; Nortershauser, Wilfried/0000-0001-7432-3687 NR 17 TC 2 Z9 2 U1 0 U2 0 PU KOREAN PHYSICAL SOC PI SEOUL PA 635-4, YUKSAM-DONG, KANGNAM-KU, SEOUL 135-703, SOUTH KOREA SN 0374-4884 J9 J KOREAN PHYS SOC JI J. Korean Phys. Soc. PD SEP PY 1999 VL 35 IS 3 BP 143 EP 147 PG 5 WC Physics, Multidisciplinary SC Physics GA 235XQ UT WOS:000082569500005 ER PT J AU Huang, Y Wang, W Liu, C Rosakis, AJ AF Huang, Y Wang, W Liu, C Rosakis, AJ TI Analysis of intersonic crack growth in unidirectional fiber-reinforced composites SO JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS LA English DT Article DE intersonic crack growth; unidirectional composites ID BIMATERIAL INTERFACE; DYNAMIC FRACTURE; PROPAGATION; MECHANICS; FIELDS AB Recent experiments on dynamic fracture of unidirectional fiber-reinforced graphite/epoxy composite materials showed that, in Mode I, the crack tip velocity could never exceed the shear wave speed, while the crack tip velocity in Mode II not only exceeded the shear wave speed but also approached a stable velocity at which the crack grew for a substantial period of time in experiments. The experimentally obtained fringe patterns also dearly showed the existence of shear shock waves when the crack tip velocity exceeded the shear wave speed. In the present study, we have obtained the asymptotic fields near an intersonically propagating crack tip. It is shown that Mode-I intersonic crack propagation is impossible because the crack tip energy release rate supplied by the elastic asymptotic field is negative and unbounded, which is physically unacceptable since a propagating crack tip cannot radiate out energy. For Mode II, however, it is established that there exists a single crack tip velocity (higher than the shear wave speed) that gives a finite and positive crack tip energy release rate. At all other intersonic crack tip speeds the energy release rate supplied by the elastic asymptotic field is identically zero. This critical crack tip velocity agrees well with the stable crack tip velocity observed in experiments. The synthetically obtained fringe patterns based on the asymptotic field also agree with experimentally obtained fringe patterns, particularly on the existence of the shock waves. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA. Michigan Technol Univ, Dept Mech Engn Engn Mech, Houghton, MI 49931 USA. Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA. RP Huang, Y (reprint author), Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA. RI Huang, Yonggang/B-6998-2009 NR 27 TC 39 Z9 40 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-5096 J9 J MECH PHYS SOLIDS JI J. Mech. Phys. Solids PD SEP PY 1999 VL 47 IS 9 BP 1893 EP 1916 DI 10.1016/S0022-5096(98)00124-0 PG 24 WC Materials Science, Multidisciplinary; Mechanics; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA 208ED UT WOS:000080976700004 ER PT J AU McNamara, AE Hill, WR AF McNamara, AE Hill, WR TI Effects of UV-B dose and irradiance: comparison among grazers SO JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY LA English DT Article DE UV-B; benthic; invertebrates; mayflies; chironomids; snails; ultraviolet radiation; reciprocity; grazers; body size; Elimia; Physella ID ULTRAVIOLET-RADIATION; MARINE-PHYTOPLANKTON; OZONE DEPLETION; ARCTIC DAPHNIA; SHORT-TERM; PHOTOSYNTHESIS; INHIBITION; COMMUNITY; GROWTH; INVERTEBRATES AB Short-term ultraviolet-B (UV-B) radiation was administered in the laboratory to mayfly nymphs (Diphetor hageni) midge larvae (Corynoneura taris) and snails (Elimia claveformis and Physella gyrina) to determine relative susceptibility to W-B stress. Invertebrate response was a function of the total amount of UV-B received (dose, kJ/m(2)), and the fluence rate at which UV-B was administered (irradiance, W/m(2)). Reciprocity did not hold for organisms tested in this study; effect of a given dose was dependent on irradiance. Invertebrates received a gradient of cumulative doses between 0 and 30 kJ/m(2) UV-B while simultaneously receiving UV-A and photosynthetically active radiation. UV-B wavelengths were weighted with the DNA action spectrum to obtain biologically effective doses between 0 and 0.214 kJ/m(2) UV-B-DNA. This dose gradient was repeated at 3 different UV-B irradiances (1.6, 2.0 and 2.7 W/m(2)). Total dose, irradiance, and organism size all contributed to W-B mortality. Mayfly nymphs and midge larvae had similar UV-B thresholds, and the lethal dose at which 50% of the organisms died (LD50) decreased with increased irradiance. For instance, LD(50)s for the midges were 17.2, 15.2 and 10 kJ/m(2) at 1.6, 2.0, and 2.7 W/m(2), respectively. Both snails were relatively resistant to W-B. The prosobranch snail Elimia showed no mortality at any of the UV-B doses administered in this study. A size-class experiment using the pulmonate snail Physella suggested that organism size also affects its ability to cope with UV-B stress: small snails (1.2 +/- 0.1 mm,(x) over bar +/- 1 SD) were 5 times more likely to die from W-B exposure than medium (5.1 +/- 0.3 mm) or large (7.8 +/- 0.6 mm) snails. Our experiments demonstrated that benthic invertebrates are differentially susceptible to acute UV-B stress, which could lead to alterations in invertebrate assemblages where UV-B levels are high. C1 Univ Louisville, Dept Biol, Louisville, KY 40292 USA. RP Hill, WR (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. NR 54 TC 17 Z9 18 U1 0 U2 7 PU NORTH AMER BENTHOLOGICAL SOC PI LAWRENCE PA 1041 NEW HAMSPHIRE STREET, LAWRENCE, KS 66044 USA SN 0887-3593 J9 J N AM BENTHOL SOC JI J. N. Am. Benthol. Soc. PD SEP PY 1999 VL 18 IS 3 BP 370 EP 380 DI 10.2307/1468450 PG 11 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA 258KG UT WOS:000083837900005 ER PT J AU Alford, WJ Gehr, RJ Schmitt, RL Smith, AV AF Alford, WJ Gehr, RJ Schmitt, RL Smith, AV TI Beam tilt and angular dispersion in broad-bandwidth, nanosecond optical parametric oscillators SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID FREQUENCY; GENERATION; PERFORMANCE AB We show that the signal and idler beams generated by certain types of unseeded, nanosecond optical paramet ric oscillators are tilted and angularly dispersed and have anomalously large bandwidths. This effect is demonstrated in both laboratory measurements and a numerical model. We show how the optical cavity design influences the tilts and how these tilts can be eliminated or minimized. We also determine the conditions necessary for injection seeding of these parametric oscillators. (C) 1999 Optical Society of America [S0740-3224(99)02409-1]. C1 Sandia Natl Labs, Dept Lasers Opt & Remote Sensing 1128, Albuquerque, NM 87185 USA. Norwegian Def Res Estab, N-2007 Kjeller, Norway. RP Alford, WJ (reprint author), Sandia Natl Labs, Dept Lasers Opt & Remote Sensing 1128, POB 5800, Albuquerque, NM 87185 USA. NR 15 TC 18 Z9 18 U1 1 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD SEP PY 1999 VL 16 IS 9 BP 1525 EP 1532 DI 10.1364/JOSAB.16.001525 PG 8 WC Optics SC Optics GA 234ZK UT WOS:000082514100024 ER PT J AU Kameda, J Bloomer, TE Sakural, S AF Kameda, J Bloomer, TE Sakural, S TI Oxidation/carbonization/nitridation and in-service mechanical property degradation of CoCrAlY coatings in land-based gas turbine blades SO JOURNAL OF THERMAL SPRAY TECHNOLOGY LA English DT Reprint DE carbonization; mechanical property degradation; nitridation; oxidation; scanning Auger microprobe; small punch testing method ID SMALL-PUNCH AB This article describes variations in the microstructure/composition and mechanical properties in plasma sprayed CoCrAlY coatings and a modified Rene 80 substrate of gas turbine blades operated for 21,000 h under liquefied natural gas fuels. Substantial oxidation/carbonization occurred in the near surface region of concave coatings, but not in the convex coatings. Aluminum and nickel/titanium-rich nitrides formed in near interface coatings and substrates of concave side of blades, respectively. Small punch (SP) specimens were prepared from the different blade location to examine the variation of the mechanical properties in the coatings. In SP tests, brittle cracks in the near surface and interface coatings of the concave side easily initiated up to 950 degrees C. The convex coatings exhibited higher ductility than the concave coatings and substrate and showed a rapid increase in the ductility above 800 degrees C, Thus it is apparent that the oxidation/carbonization and nitridation in the concave coatings produced a significant loss of the ductility. The in-service degradation mechanism of the CoCrAlY coatings is discussed in light of the operating temperature distribution and compared to that of CoNiCrAlY coatings induced by grain boundary sulfidation/oxidation. C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Ctr Adv Technol Dev, Ames, IA 50011 USA. Hitachi Ltd, Mech Engn Res Lab, Hitachi, Ibaraki 317, Japan. RP Kameda, J (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. NR 19 TC 6 Z9 6 U1 0 U2 5 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 USA SN 1059-9630 J9 J THERM SPRAY TECHN JI J. Therm. Spray Technol. PD SEP PY 1999 VL 8 IS 3 BP 440 EP 446 DI 10.1361/105996399770350403 PG 7 WC Materials Science, Coatings & Films SC Materials Science GA 233PB UT WOS:000082434300012 ER PT J AU Jeong, JY Babayan, SE Schutze, A Tu, VJ Park, J Henins, I Selwyn, GS Hicks, RF AF Jeong, JY Babayan, SE Schutze, A Tu, VJ Park, J Henins, I Selwyn, GS Hicks, RF TI Etching polyimide with a nonequilibrium atmospheric-pressure plasma jet SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID ORGANIC MATERIALS; MICROWAVE PLASMA AB An atmospheric-pressure plasma jet has been used to etch polyimide films at 1.0-8.0 +/- 0.2 mu m/min at 760 Torr and between 50 and 250 degrees C. The plasma was produced by flowing helium and oxygen between two concentric electrodes, with the inner one coupled to 13.56 MHz rf power and the outer one grounded. The etch rate increased with the O(2) partial pressure, the rf power and the substrate temperature. The apparent activation energy for etching was 0.16 eV. Langmuir-probe measurements revealed that the ion densities were between 1 x 10(10) and 1 x 10(11) cm(-3), 5 mm from the end of the powered electrode. Biasing the substrate had no effect on the rate. Ozone, singlet sigma metastable oxygen (b (1)Sigma(g)(+)), and singlet delta metastable oxygen (a (1)Delta(g)) were detected in the plasma by emission spectroscopy. More ozone was produced in the effluent through the recombination of O atoms with O(2). Based on the production rate. of O(3), the concentration of O atoms 6 mm from the powered electrode was estimated to be similar to 7 x 10(14) cm(-3) at 6.6 Torr O(2) and 200 W power. It is proposed that O atoms are the principal reactive species involved in etching polyimide. (C) 1999 American Vacuum Society. [S0734-2101(99)01705-4]. C1 Univ Calif Los Angeles, Dept Chem Engn, Los Angeles, CA 90095 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hicks, RF (reprint author), Univ Calif Los Angeles, Dept Chem Engn, Los Angeles, CA 90095 USA. EM rhicks@ucla.edu NR 31 TC 86 Z9 96 U1 6 U2 15 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 1999 VL 17 IS 5 BP 2581 EP 2585 DI 10.1116/1.581999 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600024 ER PT J AU Huang, S Soo, YL Bechmann, M Kao, YH Wu, X Coutts, TJ Dhere, R Moutinho, HR AF Huang, S Soo, YL Bechmann, M Kao, YH Wu, X Coutts, TJ Dhere, R Moutinho, HR TI Interface morphology of CdS thin films grown on cadmium stannate and glass substrates studied by grazing incidence x-ray scattering SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID TRANSPARENT CONDUCTING OXIDES; SURFACE-DIFFUSION; EPITAXIAL-GROWTH; REFLECTIVITY; CONTINUUM AB The semiconductor CdS is widely used as a window material in many photovoltaic applications. The interface between CdS and the front collector transparent conducting material plays a pivotal role in the solar cells; a physical understanding and control of the interface morphology are needed in order to improve the device performance. Cadmium stannate has recently been recognized as an important transparent conducting material in light of its superior physical properties over the conventional transparent conducting oxides. Physical understanding of the interface between CdS and cadmium stannate is therefore pf great practical interest. For this study, the grazing incidence x-ray scattering (GIXS) technique has been demonstrated very useful for the nondestructive characterization of the interface morphology in a variety of layered structures, thus, it is well suited for this task. In the present work, various thin films of CdS deposited on cadmium stannate are investigated by the GIXS technique using synchrotron radiation. Also, similar measurements were made with CdS films deposited on glass substrates for comparison. Variations of surface and interfacial roughness as well as lateral correlation lengths of interface height fluctuations as functions of film thickness and processing conditions are investigated. (C) 1999 American Vacuum Society. [S0734-2101(99)08005-7]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Huang, S (reprint author), SUNY Buffalo, Dept Phys, Amherst, NY 14260 USA. NR 22 TC 2 Z9 2 U1 1 U2 6 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 1999 VL 17 IS 5 BP 2685 EP 2691 DI 10.1116/1.581930 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600040 ER PT J AU Kaufman, DY DeLuca, PM Tsai, T Barnett, SA AF Kaufman, DY DeLuca, PM Tsai, T Barnett, SA TI High-rate deposition of biaxially textured yttria-stabilized zirconia by dual magnetron oblique sputtering SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID BEAM-ASSISTED DEPOSITION; TRANSMISSION ELECTRON-MICROSCOPY; THIN-FILM ORIENTATION; ION-BOMBARDMENT; INPLANE TEXTURE; BUFFER LAYERS; MO FILMS; ALIGNMENT; GROWTH; ANISOTROPY AB Biaxially textured yttria-stabilized zirconia thin films were deposited at high rates (approximate to 3 mu m/h) using a two-target reactive magnetron sputtering geometry. The two small-area magnetron targets were mounted at 45 degrees or 56 degrees with respect to, and on opposite sides of, the substrate normal. The films showed strong (001) out-of-plane texture. Azimuthal x-ray diffraction scans confirmed strong in-plane texture with a best (111)-peak full width at half maximum of 23 degrees. The alignment was presumably due to directed impingement of sputtered atoms and/or energetic Ar neutrals reflected from the Zr-Y target surfaces. The film texture was not as strong when only one sputter source was used. Sputtering geometries useful for large-scale deposition of textured films are described. (C) 1999 American Vacuum Society. [S0734-2101(99)01505-5]. C1 Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. RP Argonne Natl Lab, ET-212,9700 S Cass Ave, Argonne, IL 60439 USA. EM s-barnett@nwu.edu RI Barnett, Scott/B-7502-2009 NR 28 TC 5 Z9 5 U1 0 U2 1 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 EI 1520-8559 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 1999 VL 17 IS 5 BP 2826 EP 2829 DI 10.1116/1.581949 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600061 ER PT J AU Zhang, T Zeng, ZM Tian, XB Tang, BY Chu, PK Brown, IG Zhang, HX AF Zhang, T Zeng, ZM Tian, XB Tang, BY Chu, PK Brown, IG Zhang, HX TI Mechanism of enhanced plasma transport of vacuum arc plasma through curved magnetic ducts SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID CATHODIC ARC; DEPOSITION; FILMS AB The mechanism of the enhanced transport efficiency in a vacuum are plasma source equipped with a curved magnetic filter is investigated. The relationship between the transported ion current and the cathodic are current is determined, and our results suggest that the outer and inner walls of the duct interact with the plasma independently. The plasma flux is composed of two components: a diffusion flux in the transverse direction due to particle collisions, and a drift flux due to the ion inertia. The inner wall of the magnetic duct sees only the diffusion flux while the outer wall receives both fluxes. Thus, applying a positive potential to the outer duct wall reflects the ions and increases the output current. Our experimental data also show that biasing both sides of the duct is more effective than biasing the outer wall alone. (C) 1999 American Vacuum Society. [S0734-2101(99)03005-5]. C1 City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Peoples R China. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Beijing Normal Univ, Beijing Radiat Ctr, Inst Low Energy Nucl Phys, Beijing 100875, Peoples R China. RP City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Peoples R China. EM paul.chu@cityu.edu.hk RI Chu, Paul/B-5923-2013 OI Chu, Paul/0000-0002-5581-4883 NR 17 TC 13 Z9 13 U1 2 U2 2 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 EI 1520-8559 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 1999 VL 17 IS 5 BP 3074 EP 3076 DI 10.1116/1.582008 PG 3 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600099 ER PT J AU He, XM Bardeau, JF Walter, KC Nastasi, M AF He, XM Bardeau, JF Walter, KC Nastasi, M TI Characterization and enhanced properties of plasma immersion ion processed diamond-like carbon films SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; TRIBOLOGICAL PROPERTIES; COATINGS; HARD; BIAS AB The formation and properties of diamond-like carbon (DLC) films prepared on silicon substrates at room temperature, using C2H2-Ar plasma immersion ion processing, are investigated with respect to him deposition parameters. Decreases in the reactive gas-flow ratios of C2H2 to Ar(F-C2H2/F-Ar) or the gas pressure were found to decrease the hydrogen content, increase the density and hardness, and improve the surface finish of the DLC films, all of which led to enhanced tribological properties. Decreasing the friction coefficient requires increasing the hardness of the film and smoothing its surface, whereas increasing the wear resistance correlates with reducing both the hydrogen content and residual stress in DLC films. High hardness and optimum tribological properties were reached as the growth of DLC films was subjected to low-energy ion impingement, which was induced by a - 150 V pulsed bias from the C2H2-Ar plasma produced at low reactive gas pressures with low F-C2H2/F-Ar ratios. [S0734-2101(99)02305-2]. C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP He, XM (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. NR 20 TC 24 Z9 25 U1 1 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2525 EP 2530 DI 10.1116/1.581991 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600016 ER PT J AU Smentkowski, VS Krauss, AR Gruen, DM Holecek, JC Schultz, JA AF Smentkowski, VS Krauss, AR Gruen, DM Holecek, JC Schultz, JA TI Novel reflectron time of flight analyzer for surface analysis using secondary ion mass spectroscopy and mass spectroscopy of recoiled ions SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID THIN-FILM GROWTH; OF-FLIGHT; IN-SITU; BEAM ANALYSIS; REAL-TIME; SCATTERING; SPECTROMETER; DEPOSITION; PARTICLES; SPECTRA AB We have modeled, designed, built, and tested a novel reflectron time-of-flight (TOF) analyzer, which is capable of performing surface analysis using both secondary ion mass spectroscopy (SIMS) and mass spectroscopy of recoiled ions (MSRI). All elements (including H and He) can be identified, with isotopic resolution, using both MSRI and SIMS. For ions of a given mass, the higher energy ions penetrate further into the reflectron before being turned around while the lower energy ions do not penetrate as deeply. By properly adjusting both the experimental geometry and the reflectron voltages, all ions of a given mass arrive at the detector simultaneously-resulting in enhanced mass resolution compared with simple TOF detection. SIM spectra are complicated by molecular fragments in addition to elemental ions. In MSRI only elemental ions are detected. As a result, data analysis in MSRI is less complicated than in SIMS. Being able to use a single analyzer to selectively obtain SIMS or MSRI data provides complementary surface information. MSRI has a number of unique capabilities for surface studies. In situ, real-time surface analysis can be performed during film growth at pressures of similar to 2.5 mTorr at the substrate by differentially pumping both the ion source and the reflectron analyzer region. It has been demonstrated that the ratio of the positive to negative ion yield is phase specific; for example, one can clearly distinguish the different forms of carbon (diamond versus graphite versus amorphous carbon) during film growth. MSRI analysis of poorly conducting surfaces is possible. (C) 1999 American Vacuum Society. [S0734-2101(99)02005-9]. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Ionwerks, Houston, TX 77005 USA. RP Smentkowski, VS (reprint author), GE, Ctr Corp Res & Dev, Microstruct & Microanal Program, POB 8, Schenectady, NY 12301 USA. NR 30 TC 6 Z9 6 U1 2 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2634 EP 2641 DI 10.1116/1.581923 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600033 ER PT J AU Madden, HH Landers, R Kleiman, GG Zehner, DM AF Madden, HH Landers, R Kleiman, GG Zehner, DM TI Oxygen-induced changes in electron-energy-loss spectra for Al, Be and Ni SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID TRANSITION-METAL OXIDES; X-RAY ABSORPTION; LOSS SPECTROSCOPY; ALUMINUM; SURFACE; PHOTOEMISSION; SCATTERING; OXIDATION; PROFILES; AL(111) AB Electron-energy-loss spectroscopy (EELS) data are presented to illustrate line shape changes that occur as a result of oxygen interaction with metal surfaces. The metals were aluminum, beryllium and nickel. Core-level EELS data were taken for excitations from A1(2p), Be(1s), Ni(3p/3s) and O(1s) levels to the conduction band (CB) density of states (DOS) of the materials. The primary beam energies for the spectra were 300, 450, 300, and 1135 eV, respectively. The data are presented in both the (as measured) first-derivative and the integral forms. The integral spectra were corrected for coherent background losses and analyzed for CB DOS information. These spectra were found to be in qualitative agreement with published experimental and theoretical studies of these materials. One peak in the spectra for A1 oxide is analyzed for its correlation with excitonic screening of the A1(2p) core hole. Similar evidence for exciton formation is found in the Ni(3p) spectra for Ni oxide. Data are also presented showing oxygen-induced changes in the lower-loss-energy EELS curves that, in the pure metal, are dominated by plasmon-loss and interband-transition signals. Single-scattering loss profiles in the integral form of the data were calculated using a procedure of Tougaard and Chorkendorff [S. Tougaard and I. Chorkendorff, Phys. Rev. B. 35, 6570 (1987)]. For all three oxides these profiles are dominated by a feature with a loss energy of around 20-25 eV. Although this feature has been ascribed by other researchers as due to bulk plasmon losses in the oxide, an alternative explanation is that the feature is simply due to O(2s)-to-CB-level excitations. An even stronger feature is found at 7 eV loss energy for Ni oxide. Speculation is given as to its source. The line shapes in both the core-level and noncore-level spectra can also be used simply as "fingerprints" of the surface chemistry of the materials. Our data were taken using commercially available surface analysis equipment and serve to complement surface information provided by Auger electron and/or x-ray photoelectron spectroscopy. (C) 1999 American Vacuum Society. [S0734-2101(99)03205-4]. C1 Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13081970 Campinas, SP, Brazil. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37830 USA. Sandia Natl Labs, Livermore, CA 94550 USA. RP Kleiman, GG (reprint author), Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13081970 Campinas, SP, Brazil. RI LANDERS, Richard/C-7472-2013; Inst. of Physics, Gleb Wataghin/A-9780-2017 NR 56 TC 1 Z9 1 U1 2 U2 11 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2719 EP 2730 DI 10.1116/1.581936 PG 12 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600046 ER PT J AU Anders, S Stammler, T Fong, W Bogy, DB Bhatia, CS Stohr, J AF Anders, S Stammler, T Fong, W Bogy, DB Bhatia, CS Stohr, J TI Investigation of slider surfaces after wear using photoemission electron microscopy SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID X-RAY-ABSORPTION; NEXAFS AB The tribe-chemical interactions between the slider and the hard disk surface strongly influence the performance properties of a disk drive. To study these interactions, uncoated and carbon coated sliders were subjected to various wear tests using different disks. After the wear, the test slider surfaces were studied by photoemission electron microscopy (PEEM) using tunable x rays produced by a synchrotron. Using PEEM, one can identify the elemental and chemical state of the surfaces with a high spatial resolution. It was found that wear reduces the thickness of the carbon coating in some local areas of the slider surface. In particular, the coating was removed on elevated areas and in scratches. Scratches were found on the rails of the carbon coated and uncoated sliders after wear that showed the accumulation of a degraded (oxidized) lubricant which was transferred to the slider from the disk. It was also possible to analyze the chemical composition of the debris found on the slider surface. In the present case, the debris had the same chemical composition as the carbon coating of the slider. (C) 1999 American Vacuum Society. [S0734-2101(99)08505-X]. C1 Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mech Engn, Comp Mech Lab, Berkeley, CA 94720 USA. SSD IBM, San Jose, CA 95193 USA. IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA. RP Anders, S (reprint author), Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. RI Raoux, Simone/G-3920-2016 NR 14 TC 9 Z9 9 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2731 EP 2736 DI 10.1116/1.581937 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600047 ER PT J AU Diaz, J Anders, S Cossy-Favre, A Samant, M Stohr, J AF Diaz, J Anders, S Cossy-Favre, A Samant, M Stohr, J TI Enhanced secondary electron yield from oxidized regions on amorphous carbon films studied by x-ray spectromicroscopy SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID DIAMOND-LIKE CARBON; VAPOR-DEPOSITED DIAMOND; FIELD-EMISSION; ARC DEPOSITION; SURFACE; AFFINITY AB Photoemission electron spectromicroscopy with synchrotron radiation has been used to study the correlation between the chemical surface composition and secondary electron yield from the surface of amorphous carbon films. Regions of about 4 mu m diam were found which exhibited up to ten times higher secondary electron emission than the rest of the film. Near edge x-ray absorption fine structure spectroscopy of these regions showed that they contained highly oxidized carbon in the form of carboxylic and carbonate groups. These observations might be linked to the field emission properties of these films. (C) 1999 American Vacuum Society. [S0734-2101(99)02605-6]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA. RP Diaz, J (reprint author), Univ Oviedo, Fac Ciencias, Dept Fis, Area Mat Condensada, Avda Calvo Sotelo S-N, Oviedo 33007, Spain. RI Diaz, Javier/F-2381-2016; Raoux, Simone/G-3920-2016 NR 28 TC 13 Z9 13 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2737 EP 2740 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600048 ER PT J AU Liu, C Erdmann, J Maj, J Macrander, A AF Liu, C Erdmann, J Maj, J Macrander, A TI Thickness determination of metal thin films with spectroscopic ellipsometry for x-ray mirror and multilayer applications SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID MULTIPLE DETERMINATION; OPTICAL-PROPERTIES; COATING MATERIALS; CONSTANTS AB Sputtered thin film and multilayer x-ray mirrors are made at the Advanced Photon Source (APS) deposition lab for the APS users. Film thickness calibrations are carried out using in situ and ex situ spectroscopic ellipsometry, interferometry, and x-ray reflectometry. Here, we present a systematic study of thickness and optical constant determination of sputtered thin films of Au, Pt, Pd, Rh, Cr, Cu, as well as W and C, using in situ ellipsometry. Multiple data sets were obtained for each film material with incremental thicknesses and were analyzed with their correlation in mind. Results are compared with those obtained froth interferometry and x-ray reflectivity measurements. The applications and limitations of spectroscopic ellipsometry for metal thin films are discussed. Observations of a relaxation effect of a Rh/Si film and a difference in growth mode in the Cr/Si system compared with other metal/Si systems are presented. [S0734-2101(99)01605-X]. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Liu, C (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 16 TC 20 Z9 20 U1 1 U2 13 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2741 EP 2748 DI 10.1116/1.581939 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600049 ER PT J AU McCarty, KF AF McCarty, KF TI Preferred orientation in carbon and boron nitride: Does a thermodynamic theory of elastic strain energy get it right? SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID THIN-FILMS; TEXTURE; DEPENDENCE; BN AB We address whether the elastic strain-energy theory (minimizing the Gibbs energy of a stressed crystal) of McKenzie and co-workers [D. R. McKenzie and M. M. M. Bilek, J. Vac. Sci. Technol. A 16, 2733 (1998)] adequately explains the preferred orientation observed in carbon and BN films. In the formalism, the Gibbs energy of the cubic materials diamond and cubic boron includes the strain that occurs when the phases form, through specific structural transformations, from graphitic precursors. This treatment violates the requirement of thermodynamics that the Gibbs energy be a path-independent, state function. If the cubic phases are treated using the same (path-independent) formalism applied to the graphitic materials, the crystallographic orientation of lowest Gibbs energy is not that observed experimentally. For graphitic (hexagonal) carbon and BN, an elastic strain approach seems inappropriate because the compressive stresses in energetically deposited films are orders of magnitude higher than the elastic limit of the materials. Furthermore, using the known elastic constants of either ordered or disordered graphitic materials, the theory does not predict the orientation observed by experiment. (C) 1999 American Vacuum Society. [S0734-2101(99)00105-0]. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP McCarty, KF (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. RI McCarty, Kevin/F-9368-2012 OI McCarty, Kevin/0000-0002-8601-079X NR 16 TC 10 Z9 10 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2749 EP 2752 DI 10.1116/1.581940 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600050 ER PT J AU Kress, JD Hanson, DE Voter, AF Liu, CL Liu, XY Coronell, DG AF Kress, JD Hanson, DE Voter, AF Liu, CL Liu, XY Coronell, DG TI Molecular dynamics simulation of Cu and Ar ion sputtering of Cu (111) surfaces SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID DEPOSITION; BOMBARDMENT; FILMS; ATOMS AB In ionized physical vapor deposition, used in Cu interconnect technology, the interaction of energetic ions with the growing Cu film is sensitive to both the impact angle and the energy. Detailed information, such as the angle and energy dependence of the sputter yield and sticking probability, is required for realistic feature scale modeling of film coverage in the metallization of micron-sized features (vias and trenches) in integrated circuits. Here we describe the results of molecular dynamics (MD) simulations of sputtering of Cu (111) surfaces by Cu and Ar ions suitable for incorporation into feature scale simulations. For each impact angle and energy considered (10-100 eV for Cu ions and 50-250 eV for Ar ions), the following averaged properties were calculated: sputter yield (number of Cu atoms sputtered per impact), sticking probability, thermal accommodation coefficient, average reflection angle of the impact ion, and average emission angle of the sputter products. The calculated sputter yields and energy threshold at normal incidence for both Ar and Cu sputtering of Cu are in good agreement with experiment and other MD simulations. Detailed comparisons are also made with previously reported sputter yields calculated with binary collision theory. (C) 1999 American Vacuum Society. [S0734-2101(99)07705-2]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Motorola Inc, Predict Engn Lab, Los Alamos, NM 87545 USA. Motorola Inc, Predict Engn Lab, Austin, TX 78721 USA. RP Kress, JD (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 35 TC 60 Z9 60 U1 2 U2 12 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 2819 EP 2825 DI 10.1116/1.581948 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600060 ER PT J AU Keidar, M Aharonov, R Beilis, II AF Keidar, M Aharonov, R Beilis, II TI Influence of an electrical field on the macroparticle size distribution in a vacuum arc SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID CATHODIC-ARC; PLASMA-JET; TRANSPORT; COATINGS; DUCTS; PARAMETERS; GENERATION; DEPOSITION; DISCHARGE; GROWTH AB The results of experimental study of macroparticle distribution in a vacuum are presented for Cu, Ti, Zr, and Cr cathodes. We have studied the macroparticle contamination of the films deposited on the substrate having floating potential and biased up to -1000 V with respect to the anode. It has been found that the macroparticle number significantly decreases (by a factor of 3-4) with substrate biasing for all examined cathode materials. A model of macroparticle motion in the quasineutral plasma and near-substrate sheath was proposed. The model bases on analyses of the macroparticle charging and motion in the quasineutral plasma and near substrate sheath. The model can qualitatively explain the macroparticle reduction in the coating due to negatively charged macroparticle reflection in an electric field. (C) 1999 American Vacuum Society. [S0734-2101(99)04805-8]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Multi Arc Inc, Rockaway, NJ 07866 USA. Tel Aviv Univ, Elect Discharge & Plasma Lab, IL-69978 Tel Aviv, Israel. RP Keidar, M (reprint author), Cornell Univ, 287 Grumann Hall, Ithaca, NY 14853 USA. NR 30 TC 18 Z9 23 U1 0 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 3067 EP 3073 DI 10.1116/1.582007 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600098 ER PT J AU Hakovirta, M Walter, KC Wood, BP Nastasi, M AF Hakovirta, M Walter, KC Wood, BP Nastasi, M TI Graphite macroparticle filtering efficiency of three different magnetic filter designs used in the filtered cathodic vacuum arc deposition of tetrahedral amorphous carbon films SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID DIAMOND FILMS; COATINGS AB The graphite macroparticle filtering efficiency of three different magnetic filter designs (straight duct, toroidal duct, and 90 degrees free-standing solenoid) used in the filtered cathodic vacuum are deposition of tetrahedral amorphous carbon (ta-C) films was investigated. The particle contents in the coatings were measured using scanning electron microscopy (SEM) technique. In addition, during the ta-C deposition, long time exposure photographs were taken to see the graphite macroparticle trajectories and thus to qualitatively evaluate the filtering performance of different magnetic filters. The: particle density measurements from the SEM images show that the filtering efficiency of the 90 degrees free-standing solenoid design is 13 times better than the filtering efficiency of the straight duct design. However, the toroidal duct design had only 3 times higher. filtering efficiency compared to the straight duct design. (C) 1999 American Vacuum Society. [S0734-2101(99)07105-5]. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hakovirta, M (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 14 TC 3 Z9 3 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1999 VL 17 IS 5 BP 3077 EP 3080 DI 10.1116/1.582009 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 236JN UT WOS:000082596600100 ER PT J AU Felter, TE AF Felter, TE TI Cold cathode field emitter array on a quadrupole mass spectrometer: Route to miniaturization SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID EMISSION AB We have improved the quadrupole mass spectrometer by substituting the conventional hot filament electron source by a field emitter array (FEA). Elimination of the hot filament avoids a number of common problems, including thermal cracking of delicate molecules, outgassing of the filament itself and nearby components, high power requirements for the filament, large size, stray light, stray magnetic fields, contamination by thoria and tungsten, and a long warm-up time. The advantages are dearest for portable applications where power requirements dominate. Here, the power savings are not just in eliminating the filament supply, but more important in reducing the largest component of the system, the vacuum pump. This comes about because the filament is the primary gas load and because chemical reactions taking place on it require fast pumping to keep the products from interfering with the spectra. Comparison between hot filament and cold cathode FEA ionization is made using a quadrupole mass spectrometer fitted with both electron sources, independently controlled. The FEA advantage is strongest when the ultrahigh vacuum system is throttled to a low pumping speed, mimicking a portable system with a small pump. FEAs also enable miniaturization and a corresponding decrease in pump size. Moreover, with miniaturization, shorter mean free paths and consequently higher working pressures can be tolerated further decreasing pump requirements. (C) 1999 American Vacuum Society. [S0734-211X(99)01905-8]. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Felter, TE (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 15 TC 9 Z9 9 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1999 VL 17 IS 5 BP 1993 EP 1996 DI 10.1116/1.590859 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 245VY UT WOS:000083129900015 ER PT J AU Dang, G Cao, XA Ren, F Pearton, SJ Han, J Baca, AG Shul, RJ AF Dang, G Cao, XA Ren, F Pearton, SJ Han, J Baca, AG Shul, RJ TI Oxygen implant isolation of n-GaN field-effect transistor structures SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID ION-IMPLANTATION; NITROGEN; ALGAAS AB Multiple-energy (30-325 keV) O+ implantation into GaN field-effect transistor structures (n similar to 10(18) cm(-3), 3000 Angstrom thick) can produce as-implanted sheet resistances of 4 x 10(12) Omega/square, provided care is taken to ensure compensation of the region up to the projected range of the lowest energy implant. The sheet resistance remains above 10(7) Omega/square to annealing temperatures of similar to 650 degrees C and displays an activation energy of 0.29 eV. No diffusion of the implanted oxygen was observed for anneals up to 800 degrees C. (C) 1999 American Vacuum Society. [S0734-211X(99)00805-7]. C1 Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA. Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Dang, G (reprint author), Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA. NR 15 TC 11 Z9 11 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1999 VL 17 IS 5 BP 2015 EP 2018 DI 10.1116/1.590864 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 245VY UT WOS:000083129900020 ER PT J AU Chen, WJ Abraham-Shrauner, B Woodworth, JR AF Chen, WJ Abraham-Shrauner, B Woodworth, JR TI Model etch profiles for ion energy distribution functions in an inductively coupled plasma reactor SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID RADIO-FREQUENCY DISCHARGES; CYCLOTRON-RESONANCE PLASMA; ANGULAR-DISTRIBUTIONS; HELICON SOURCE; LOW-PRESSURE; ARGON; SIMULATION; TRANSPORT; CHLORINE; POLYSILICON AB Rectangular trench profiles are modeled with analytic etch rates determined from measured ion distribution functions. The pattern transfer step for this plasma etch is for trilayer lithography. Argon and chlorine angular ion energy distribution functions measured by a spherical collector ring analyzer are fit to a sum of drifting Maxwellian velocity distribution functions with anisotropic temperatures. The fit of the model ion distribution functions by a simulated annealing optimization procedure converges adequately for only two drifting Maxwellians, The etch rates are proportional to analytic expressions for the ion energy flux. Numerical computation of the etch profiles by integration of the characteristic equations for profile points and connection of the profiles points is efficient. (C) 1999 American Vacuum Society. C1 Washington Univ, Dept Elect Engn, St Louis, MO 63130 USA. Sandia Natl Labs, Laser Opt & Remote Sensing Dept, Albuquerque, NM 87185 USA. RP Chen, WJ (reprint author), Washington Univ, Dept Elect Engn, St Louis, MO 63130 USA. NR 36 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1999 VL 17 IS 5 BP 2061 EP 2069 DI 10.1116/1.590873 PG 9 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 245VY UT WOS:000083129900030 ER PT J AU Peake, GM Zhang, L Li, NY Sarangan, AM Willison, CG Shul, RJ Hersee, SD AF Peake, GM Zhang, L Li, NY Sarangan, AM Willison, CG Shul, RJ Hersee, SD TI Micromachined, reusable shadow mask for integrated optical elements grown by metalorganic chemical vapor deposition SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID LASER; MOVPE; GAAS AB Precise three-dimensional control of micro-optical elements has recently been achieved using shadow masked metalorganic chemical vapor deposition (MOCVD) with an epitaxial mask. However, the epitaxial shadow mask used to deposit these precision micro-optics limits the size and shape of the available structures. In this work, a reusable shadow mask was fabricated by deep-Si reactive ion etching and employed in the growth of circular microlenses. This novel, reusable mask makes the shadow masked MOCVD process more rapid and less expensive and also allows more flexibility in the shape and size of the micro-optical elements that can be deposited. The micromachined shadow mask is held in place during growth by fusion bonding, it can be released by rapid cooling and it is easily cleaned for reuse. Microlenses with apertures as large as 500 mu m, fabricated under the micromachined mask, did not flatten at the center and formed accurate quadric surfaces. (C) 1999 American Vacuum Society. C1 Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA. Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87106 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Peake, GM (reprint author), Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA. NR 17 TC 5 Z9 5 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1999 VL 17 IS 5 BP 2070 EP 2073 DI 10.1116/1.590874 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 245VY UT WOS:000083129900031 ER PT J AU Schenkel, T Wu, KJ Li, H Newman, N Barnes, AV McDonald, JW Hamza, AV AF Schenkel, T Wu, KJ Li, H Newman, N Barnes, AV McDonald, JW Hamza, AV TI Analysis of submicron Cu-Ta-SiO2 structures by highly charged ion secondary ion mass spectroscopy SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 1st International Conference on Advanced Materials and Processes for Microelectronics CY MAR 15-18, 1999 CL SAN JOSE, CALIFORNIA SP Amer Vacuum Soc ID SURFACES; EMISSION; SILICON AB We have analyzed wafers with submicron copper lines on Ta/SiO2/Si by time-of-flight secondary ion mass spectrometry with highly charged projectiles. The goal of the study was to diagnose the effectiveness of different cleaning solutions during brush scrubbing after chemical mechanical polishing. The advantage of projectiles like Xe44+ lies in the fact that they produce up to three orders of magnitude more secondary ions than singly charge projectiles. Detection of molecular ions (e.g., Cu oxide, Cu hydrocarbon, and alumina ions) enables a detailed assessment of surface conditions on wafers. Analysis of correlations in secondary ion emission from individual impacts gives insight into the chemical structure and homogeneity on a length scale of about 10 nm. (C) 1999 American Vacuum Society. [S0734-211X(99)04605-3]. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Charles Evans & Associates, Redwood City, CA 94063 USA. OnTrak Syst Inc, Milpitas, CA 95035 USA. RP Schenkel, T (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 18 TC 6 Z9 6 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1999 VL 17 IS 5 BP 2331 EP 2335 DI 10.1116/1.590913 PG 5 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 245VY UT WOS:000083129900073 ER PT J AU Ekechukwu, AA Dewberry, RA Bibler, NE Kinard, F AF Ekechukwu, AA Dewberry, RA Bibler, NE Kinard, F TI Ion chromatography separation of alkali, alkaline earth, transition, posttransition, lanthanide, and actinide metal cations in waste sludge SO LC GC NORTH AMERICA LA English DT Article ID LIQUID-CHROMATOGRAPHY AB Trace radionuclides are present in concentrations of only a few hundred disintegrations-per-minute-per-milliliter in high-level radioactive waste samples. These radionuclides can be separated and analyzed using liquid scintillation counting and inductively coupled plasma mass spectrometry. The authors developed an ion chromatography method to separate 31 cations in a single chromatographic run, Their method uses a linear gradient, a step gradient, and isocratic elution using four eluents in four separate eluent phases. The separation requires 45 min and has detection limits ranging from 0.1 to 5.0 ppm using spectro photometric detection for nonradioactive cations, This article presents the applications, limitations, interferences, precision, and accuracy of this method. C1 Westinghouse Savannah River Co, Savannah River Technol Ctr, Aiken, SC 29808 USA. Coll Charleston, Dept Chem & Biochem, Charleston, SC 29424 USA. RP Ekechukwu, AA (reprint author), Westinghouse Savannah River Co, Savannah River Technol Ctr, Bldg 7730A, Aiken, SC 29808 USA. NR 8 TC 5 Z9 5 U1 1 U2 4 PU ADVANSTAR COMMUNICATIONS PI DULUTH PA 131 W FIRST ST, DULUTH, MN 55802 USA SN 0888-9090 J9 LC GC N AM JI LC GC N. AM. PD SEP PY 1999 VL 17 IS 9 BP 842 EP + PG 6 WC Chemistry, Analytical SC Chemistry GA 236CY UT WOS:000082581700005 ER PT J AU Burton, H AF Burton, H TI Their day in the sun: Women of the Manhattan Project. SO LIBRARY JOURNAL LA English DT Book Review C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Burton, H (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD SEP 1 PY 1999 VL 124 IS 14 BP 230 EP 230 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 232DB UT WOS:000082349500233 ER PT J AU Salzmann, M Stocking, EM Silks, LA Senn, H AF Salzmann, M Stocking, EM Silks, LA Senn, H TI NMR characterization of I,I-selenocystine with 92% Se-77 enrichment SO MAGNETIC RESONANCE IN CHEMISTRY LA English DT Article DE NMR; Se-77 NMR; H-1 NMR; Se-77 enrichment; Se-77 labeling; (Se-77)(2)-cystine; biomolecules; strong coupling ID NUCLEAR-MAGNETIC-RESONANCE; SELENOCYSTEINE; PROTEINS AB Techniques for the biosynthetic incorporation of selenomethionine into biomolecules have recently been exploited to produce both heavy-atom derivatives and NMR probes for the elucidation of local and global structures of a variety of biological macromolecules. Since the work of Bock and co-workers in 1994, also chalcogen analogue replacement of cystine by selenocystine residues in proteins can be achieved to study structural, mechanistic and functional aspects of enzymes. This paper reports the H-1 and Se-77 NMR spectroscopic characterisation of 1,1-selenocystine with 77Se at natural abundance and 92% enriched: delta(H-1), delta(Se-77); (1)J(Se-77,Se-77'), (2)J((HBbeta 1,beta 2)-H-1,Se-77), (3)J((HBbeta 1,beta 2)-H-1, 77Se'), (3)J(H-1(alpha), Se-77); T-1(Se-77), T-2(Se-77), T-1p(Se-77). The linewidth of the 77Se resonance of selenocystine is dominated by chemical shift anisotropy relaxation, as shown by its dependence on the square of the magnetic field. The reported parameters will serve as reference data for the biomolecular NMR spectroscopy of Se-77-labeled proteins where the cysteine has been replaced by selenocysteines. Copyright (C) 1999 John Wiley & Sons, Ltd. C1 F Hoffmann La Roche AG, Pharma Res, CH-4070 Basel, Switzerland. Univ Calif Los Alamos Natl Lab, NIH Natl Stable Isotope Resource, Los Alamos, NM 87545 USA. RP Senn, H (reprint author), F Hoffmann La Roche AG, Pharma Res, PRPIS 65-512, CH-4070 Basel, Switzerland. NR 14 TC 14 Z9 14 U1 2 U2 6 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0749-1581 J9 MAGN RESON CHEM JI Magn. Reson. Chem. PD SEP PY 1999 VL 37 IS 9 BP 672 EP 675 DI 10.1002/(SICI)1097-458X(199909)37:9<672::AID-MRC514>3.0.CO;2-O PG 4 WC Chemistry, Multidisciplinary; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA 236AL UT WOS:000082576000010 ER PT J AU Landis, CS Li, X Telang, FW Molina, PE Palyka, I Vetek, G Springer, CS AF Landis, CS Li, X Telang, FW Molina, PE Palyka, I Vetek, G Springer, CS TI Equilibrium transcytolemmal water-exchange kinetics in skeletal muscle in vivo SO MAGNETIC RESONANCE IN MEDICINE LA English DT Article DE transcytolemmal; water; exchange; CR; concentration ID MAGNETIC-RESONANCE; CELL-MEMBRANES; RAT; DIFFUSION; RELAXATION; NMR; TISSUE; VOLUME; BLOOD; PERMEABILITY AB It is commonly assumed that equilibrium transcytolemmal water exchange in tissue is sufficiently frequent as to be fast on any NMR time scale achievable with an extracellular contrast agent (CR) in vivo. A survey of literature values for cell membrane diffusional permeability coefficients (P) and cell sizes suggests that this should not really be so. To evaluate this issue experimentally, we used a programmed intravenous CR infusion protocol for the rat with several rate plateaus, each of which achieved an increased steady-state concentration of GdDTPA(2-)in the blood plasma, interleaved rigorous measurements of (H2O)-H-1 inversion recoveries were made from arterial blood and from a region of homogeneous thigh muscle tissue throughout the CR infusion. We made careful relaxographic analyses for the blood and muscle (H2O)-H-1 longitudinal relaxation times. The combined data from several animals were evaluated with a two-site model for equilibrium transcytolemmal water exchange, An excellent fitting was achieved, with parameters that agreed very well with the relevant physiological properties available in the literature. The fraction of water in the extracellular space, 0.11, is quite consistent with published values, as well as with reported tissue CR concentrations when one accounts for the restriction of CR to this space. The derived average lifetime for a water molecule in the thigh muscle sarcoplasm, 1.1 +/- 0.4 sec, implies a sarcolemmal P of 13 x 10(-4) cm/sec, which is well within the range of literature values determined in vitro. Moreover, we find that because of the exchange, the (H2O)-H-1 longitudinal relaxation rate constant exhibits a decided nonlinear dependence on the tissue or thermodynamic (extracellular) concentration of Gd-DTPA(2-). The muscle system departs the fast-exchange limit at a [CR] value of <100 mu mol/L. This has significant implications for the quantitative use of CRs as MRI tracers. Published 1999 Wiley-Liss, Inc.(dagger) C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. N Shore Univ Hosp, Dept Surg, Manhasset, NY USA. RP Springer, CS (reprint author), Brookhaven Natl Lab, Dept Chem, Bldg 55A,POB 5000, Upton, NY 11973 USA. OI Springer, Charles/0000-0002-5966-2135 FU NIGMS NIH HHS [R01-GM32125] NR 43 TC 129 Z9 130 U1 1 U2 4 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0740-3194 J9 MAGNET RESON MED JI Magn. Reson. Med. PD SEP PY 1999 VL 42 IS 3 BP 467 EP 478 DI 10.1002/(SICI)1522-2594(199909)42:3<467::AID-MRM9>3.0.CO;2-0 PG 12 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 232BR UT WOS:000082346300009 PM 10467291 ER PT J AU Walkowicz, M Ji, YG Ren, XJ Horsthemke, B Russell, LB Johnson, D Rinchik, EM Nicholls, RD Stubbs, L AF Walkowicz, M Ji, YG Ren, XJ Horsthemke, B Russell, LB Johnson, D Rinchik, EM Nicholls, RD Stubbs, L TI Molecular characterization of radiation- and chemically induced mutations associated with neuromuscular tremors, runting, juvenile lethality, and sperm defects in jdf2 mice SO MAMMALIAN GENOME LA English DT Article ID DILUTION P LOCUS; ANGELMAN SYNDROMES; PRADER-WILLI; MOUSE; GENE AB The juvenile development and fertility-2 (jdf2) locus, also called runty-jerky-sterile (rjs), was originally identified through complementation studies of radiation-induced p-locus mutations. Studies with a series of ethylnitrosourea (ENU)-induced jdf2 alleles later indicated that the pleiotropic effects of these mutations were probably caused by disruption of a single gene. Recent work has demonstrated that the jdf2 phenotype is associated with deletions and point mutations in Herc2, a gene encoding an exceptionally large guanine nucleotide exchange factor protein thought to play a role in vesicular trafficking. Here we describe the molecular characterization of a collection of radiation- and chemically induced jdf2/Herc2 alleles. Ten of the 13 radiation-induced jdf2 alleles we studied are deletions that remove specific portions of the Herc2 coding sequence; DNA rearrangements were also detected in two additional mutations. Our studies also revealed that Herc2 transcripts are rearranged, not expressed, or are present in significantly altered quantities in animals carrying most of the jdf2 mutations we analyzed, including six independent ENU-induced alleles. These data provide new molecular clues regarding the wide range of jdf2 and p phenotypes that are expressed by this collection of recently generated and classical p-region mutations. C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. Case Western Reserve Univ, Sch Med, Dept Genet, Cleveland, OH 44106 USA. Case Western Reserve Univ, Sch Med, Ctr Human Genet, Cleveland, OH 44106 USA. Univ Hosp Cleveland, Cleveland, OH 44106 USA. Univ Clin Essen, Inst Human Genet, D-4300 Essen 1, Germany. RP Stubbs, L (reprint author), Univ Calif Lawrence Livermore Natl Lab, Ctr Human Genome, 7000 East Ave,L-452, Livermore, CA 94550 USA. OI Stubbs, Lisa/0000-0002-9556-1972 FU NHGRI NIH HHS [HG00370] NR 19 TC 23 Z9 24 U1 1 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0938-8990 J9 MAMM GENOME JI Mamm. Genome PD SEP PY 1999 VL 10 IS 9 BP 870 EP 878 DI 10.1007/s003359901106 PG 9 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA 226AF UT WOS:000081997600005 PM 10441737 ER PT J AU Kim, JC Auh, KH Schilling, CH AF Kim, JC Auh, KH Schilling, CH TI Effects of polysaccharides on the particle packing and green strength of alumina slurries SO MATERIALS LETTERS LA English DT Article DE polysaccharide; particle; packing; green; strength; alumina (Al2O3); slurry ID SUSPENSIONS AB The consolidation behaviors of alumina suspensions with polysaccharides having different concentrations and molecular weights were analyzed. The polysaccharide molecule absorbs to the surface of alumina powder in an aqueous suspension to give sorbate-mediated steric hindrance. Polysaccharides in aqueous suspension contributed to particle packing and green strength after drying, The tensile strength of alumina green body, and packing densities after slip casting changed in different style with the increase of polysaccharide molecular weight. Polysaccharide molecular weight played a major role in determining the green strength of alumina suspensions. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Hanyang Univ, Ceram Mat Res Inst, Seoul 133791, South Korea. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Kim, JC (reprint author), Hanyang Univ, Ceram Mat Res Inst, 17 HanengdangDong, Seoul 133791, South Korea. NR 6 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-577X J9 MATER LETT JI Mater. Lett. PD SEP PY 1999 VL 40 IS 5 BP 209 EP 212 DI 10.1016/S0167-577X(99)00077-4 PG 4 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 241MU UT WOS:000082887800002 ER PT J AU Robinson, ER Tassano, JB AF Robinson, ER Tassano, JB TI Torque elimination fittings prevent ultra-high purity gas corrosion site SO MATERIALS PERFORMANCE LA English DT Article AB The standard metal face seal fitting is used throughout the semiconductor industry on process lines that span the range from high pressure to high vacuum. Leakage of fluids out of a system may be catastrophic in those containing toxic, corrosive, or pyrophoric materials. Leakage of moisture and particles into a system has a negative impact on product yields and life expectancy of a gas system because of internal corrosion. This article addresses leakage both into and but of a gas system from fittings under normal and more challenging applications. Torque elimination enhances the reliable functioning of metal face seal fittings that are exposed to shock/vibration. C1 Omnisafe Co, Campbell, CA 95008 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Robinson, ER (reprint author), Omnisafe Co, 546 Div St, Campbell, CA 95008 USA. NR 3 TC 0 Z9 0 U1 0 U2 1 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 USA SN 0094-1492 J9 MATER PERFORMANCE JI Mater. Perform. PD SEP PY 1999 VL 38 IS 9 BP 64 EP 68 PG 5 WC Materials Science, Characterization & Testing SC Materials Science GA 232UC UT WOS:000082387500021 ER PT J AU Watanabe, Y Kang, SH Chan, JW Morris, JW AF Watanabe, Y Kang, SH Chan, JW Morris, JW TI Fabrication of magnetically graded material by rolling deformation of wedge-shaped 304 stainless steel SO MATERIALS TRANSACTIONS JIM LA English DT Article; Proceedings Paper CT Spring Meeting of the Japan-Institute-of-Metals CY MAR 29-31, 1999 CL TOKYO, JAPAN SP Japan Inst Met DE functionally graded material; martensitic transformation; stainless steel; inhomogeneous deformation; rolling; magnetic property; microstructure; microhardness ID TRANSFORMATION; MARTENSITE AB This paper reports a technique that fabricates a magnetically graded material in which the saturation magnetization varies linearly as a function of distance. An initially wedge-shaped 304 stainless steel was rolled into a rectangular cross section. The saturation magnetization curve as a function of rolling ratio has a positive curvature. Since the rolling ratio distribution showed a negative curvature, it was possible to achieve a nearly linear magnetic gradient along the specimen. Furthermore, it was found that the hardness also varied gradually in the deformed specimen, suggesting that the technique presented in this work can fabricate a functionally graded material not only in magnetic properties but also in mechanical properties. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Adv Mat, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Shinshu Univ, Dept Funct Machinery & Mech, Ueda, Nagano 3868567, Japan. RP Watanabe, Y (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Adv Mat, Berkeley, CA 94720 USA. NR 14 TC 7 Z9 7 U1 0 U2 0 PU JAPAN INST METALS PI SENDAI PA AOBA ARAMAKI, SENDAI, 980, JAPAN SN 0916-1821 J9 MATER T JIM JI Mater. Trans. JIM PD SEP PY 1999 VL 40 IS 9 BP 961 EP 966 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 252XH UT WOS:000083527200030 ER PT J AU Johnson, PA AF Johnson, PA TI The new wave in acoustic testing SO MATERIALS WORLD LA English DT Article C1 Univ Calif Los Alamos Natl Lab, Los Alamos Seism Res Lab, Los Alamos, NM USA. NR 5 TC 69 Z9 70 U1 0 U2 2 PU INST MATERIALS PI LONDON PA 1 CARLTON HOUSE TERRACE, LONDON SW1Y 5DB, ENGLAND SN 0967-8638 J9 MATER WORLD JI Mater. World PD SEP PY 1999 VL 7 IS 9 BP 544 EP 546 PG 3 WC Materials Science, Ceramics; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 236KK UT WOS:000082598600023 ER PT J AU Elahi, M Weitsman, YJ AF Elahi, M. Weitsman, Y. J. TI On the Mechanical Response of a Random Chopped Fiber Mat/Polymeric Resin Composite: Data and Model SO MECHANICS OF TIME-DEPENDENT MATERIALS LA English DT Article DE composite materials; creep; cyclic response; damage; failure; temperature effects AB This article presents data on the creep response of a polymeric composite that is a candidate material for automotive applications. The above data established the basis for the mechanical characterization of material's response over a wide range of stresses and temperatures, as well as under cyclic tensile loading. A constitutive model based upon fundamental principles of irreversible thermodynamics and continuum mechanics was employed to encompass the above mentioned database and to predict the response under more complex inputs. These latter tests verified the validity of the model. C1 [Weitsman, Y. J.] Oak Ridge Natl Lab, Engn Technol Dept, M-S 8051, Oak Ridge, TN 37830 USA. Univ Tennessee, MAES Dept, 307 Perkins Hall, Knoxville, TN 37996 USA. RP Weitsman, YJ (reprint author), Oak Ridge Natl Lab, Engn Technol Dept, M-S 8051, Oak Ridge, TN 37830 USA. EM weitsman@utk.edu NR 7 TC 8 Z9 8 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1385-2000 EI 1573-2738 J9 MECH TIME-DEPEND MAT JI Mech. Time-Depend. Mater. PD SEP PY 1999 VL 3 IS 3 BP 219 EP 244 DI 10.1023/A:1009826630617 PG 26 WC Mechanics; Materials Science, Characterization & Testing SC Mechanics; Materials Science GA V43IQ UT WOS:000209675500002 ER PT J AU Kaplan, GI Rosenfeld, AB Allen, BJ Coderre, JA Liu, HYB AF Kaplan, GI Rosenfeld, AB Allen, BJ Coderre, JA Liu, HYB TI Fission converter and metal-oxide-semiconductor field effect transistor study of thermal neutron flux distribution in an epithermal neutron therapy beam SO MEDICAL PHYSICS LA English DT Article DE BNCT; thermal neutrons; dosimetry; fission detector; MOSFET ID CAPTURE THERAPY AB The depth distribution of the thermal neutron flux is a major factor in boron neutron capture therapy (BNCT) in determining the efficiency of cell sterilization. In this paper the fission detector method is developed and applied to measure the in-phantom thermal neutron flux depth distribution. Advantages of the fission detector include small size, direct measurement of thermal neutron flux in a mixed radiation field of BNCT beam, self-calibration, and the possibility of on-line measurement. The measurements were performed at epithermal a BNCT facility. The experimental results were compared with the thermal neutron flux calculated by the Monte Carlo method and found to be in good agreement. (C) 1999 American Association of Physicists in Medicine. [S0094-2405(99)01609-0]. C1 Univ Wollongong, Dept Engn Phys, Wollongong, NSW 2522, Australia. Univ Sydney, Westmead Hosp, Westmead Inst Canc Res, Westmead, NSW 2145, Australia. St George Canc Care Ctr, Kogarah, NSW, Australia. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Calif Davis, Dept Neurol Surg, Sacramento, CA 95817 USA. RP Kaplan, GI (reprint author), Univ Wollongong, Dept Engn Phys, Wollongong, NSW 2522, Australia. RI Rosenfeld, Anatoly/D-1989-2014 NR 19 TC 8 Z9 8 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0094-2405 J9 MED PHYS JI Med. Phys. PD SEP PY 1999 VL 26 IS 9 BP 1989 EP 1994 DI 10.1118/1.598703 PG 6 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 237AV UT WOS:000082632200031 PM 10505889 ER PT J AU Wang, MS Wolf, SF Lipschutz, ME AF Wang, MS Wolf, SF Lipschutz, ME TI Chemical studies of H chondrites-10: Contents of thermally labile trace elements are unaffected by late heating SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID COMPLEX EXPOSURE HISTORIES; METEOROID STREAMS; PARENT BODY; NOBLE-GASES; METEORITES; CONFIRMATION; BREAKUP; EARTH; AGES AB We have used radiochemical neutron activation analysis (RNAA) to determine 15 trace elements, including 10 moderately to highly volatile ones-Rb, Ag, Se, Cs, Te, Zn, Cd, Bi, Tl, In (in increasing volatility order), in 6 H chondrite falls with low-He-3 contents. These (plus prior RNAA data) provide a compositional database of 92 H4-6 chondrite falls. Three suites of samples can be identified from their noble gas contents: 44 with "normal" contents and, therefore, "normal" orbits and cosmic-ray exposure histories; 8 that lost radiogenic gases, presumably by shock late in their histories; and 17 that lost cosmogenic gases by heating during close solar approach. We used the standard multivariate statistical techniques of linear discriminant analysis and logistic regression to compare contents of the 10 moderately and highly volatile trace elements, listed above, in these three suites. We found no significant differences. This contrasts sharply with similar comparisons involving random falls and H4-6 chondrites that landed on Earth at specific time intervals. Apparently, contents of volatile trace elements in H4-6 chondrites were established early in their histories, and they are so retentively sited that loss during later heating episodes did not occur. C1 Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Lipschutz, ME (reprint author), Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. NR 22 TC 7 Z9 7 U1 0 U2 2 PU METEORITICAL SOC PI FAYETTEVILLE PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 USA SN 0026-1114 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD SEP PY 1999 VL 34 IS 5 BP 713 EP 716 PG 4 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 240XG UT WOS:000082851900003 ER PT J AU Fiske, PS Schnetzler, CC McHone, J Chanthavaichith, KK Homsombath, I Phouthakayalat, T Khenthavong, B Xuan, PT AF Fiske, PS Schnetzler, CC McHone, J Chanthavaichith, KK Homsombath, I Phouthakayalat, T Khenthavong, B Xuan, PT TI Layered tektites of southeast Asia: Field studies in central Laos and Vietnam SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID AUSTRALASIAN TEKTITES; NORTHEAST THAILAND; IMPACT; EXCAVATION; SITE AB We have recovered 18 kg of layered tektites from 10 tektite-bearing localities in Laos and central Vietnam, including 5 localities around the town of Muong Nong (Laos). Several of these deposits originally contained several hundred kilograms of layered tektite fragments, and one fragmented mass may have been as large as 1000 kg. This is the largest single deposit of tektites yet reported. In this region, layered tektite fragments are found in isolated clusters usually associated with a pebbly laterite horizon that is 0-1 m below the surface. Near Khe Sanh, Vietnam, we estimate the abundance of layered tektite fragments to be similar to 100 g/m(2). This is greater than five times the abundance estimated for northeast Thailand (Fiske et al., 1996). In a region that extends from northeast Thailand, through central Laos, and into central Vietnam, we found only layered tektites, which confirmed the existence of a large (>50 000 km(2)) subfield of the Australasian strewn field with only layered tektites. The east-west extent of the "layered-only" subfield is well constrained, but little field data exist to constrain its north-south extent. C1 Univ Calif Lawrence Livermore Natl Lab, Phys & Space Technol Directorate, Livermore, CA 94550 USA. Univ Maryland, Dept Geog, College Pk, MD 20742 USA. Arizona State Univ, Dept Geol, Tempe, AZ 85287 USA. Natl Ctr Sci & Technol, Inst Geol Sci, Hanoi, Vietnam. RP Fiske, PS (reprint author), Univ Calif Lawrence Livermore Natl Lab, Phys & Space Technol Directorate, L-45, Livermore, CA 94550 USA. NR 17 TC 13 Z9 13 U1 1 U2 4 PU METEORITICAL SOC PI FAYETTEVILLE PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 USA SN 0026-1114 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD SEP PY 1999 VL 34 IS 5 BP 757 EP 761 PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 240XG UT WOS:000082851900009 ER PT J AU Reed, GW AF Reed, GW TI Don't drink the water SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID LUNAR ATMOSPHERE AB If water exists in permanently shadowed terrain on the Moon as suggested by a number of investigators (Watson et al., 1961; Arnold, 1979; Hedges, 1980; Nozette et al., 1996; Duke and Whittaker, 1997) and strongly supported by the Lunar Prospector neutron flux measurements (Feldman et al., 1998), the results of studies on another volatile, namely Hg, are quite relevant. Whereas water has not been positively found, a large number of studies have established the presence of Hg in lunar samples. Its presence and volatile behavior are important when considering water as probably the most important in situ lunar resource. Here we show that the amount of Hg in lunar cold traps may be comparable to the amounts of water. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Reed, GW (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 34 TC 7 Z9 7 U1 0 U2 2 PU METEORITICAL SOC PI FAYETTEVILLE PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 USA SN 0026-1114 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD SEP PY 1999 VL 34 IS 5 BP 809 EP 811 PG 3 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 240XG UT WOS:000082851900015 ER PT J AU Girault, V Devine, RAB Warren, WL Vanheusden, K AF Girault, V Devine, RAB Warren, WL Vanheusden, K TI A study of proton generation in Si/SiO2/Si structures SO MICROELECTRONIC ENGINEERING LA English DT Article; Proceedings Paper CT 11th Biennial Conference on Insulating Films on Semiconductors CY JUN 16-19, 1999 CL KLOSTER BANZ, GERMANY SP Stifterverband Deuts Wissenschaft, European Off Aerospace Res & Dev, Airforce Off Sci Res, U S Air Force Res Lab, Infineon Technol, Wacker Siltronic, IEEE Elect Device Soc AB The results of a study of the proton generation reaction in Si/SiO2/Si structures during forming gas (N-2, H-2) annealing are presented. The main objective of the experiment was to determine the type of the reaction, i.e. to ascertain whether the oxide surface or oxide volume is predominant. We conclude that the oxide surface related generation mechanism appears to be the most important. At the same time as protons are generated, we observed a change in the top Si layer resistance. This may be associated with the reaction with hydrogen during the forming gas anneal. C1 France Telecom, Ctr Natl Etud Telecommun, F-38243 Meylan, France. Sandia Natl Labs, Albuquerque, NM 87185 USA. USAF, Res Labs, Kirtland AFB, NM USA. RP Girault, V (reprint author), France Telecom, Ctr Natl Etud Telecommun, BP 98, F-38243 Meylan, France. NR 4 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9317 J9 MICROELECTRON ENG JI Microelectron. Eng. PD SEP PY 1999 VL 48 IS 1-4 BP 167 EP 170 DI 10.1016/S0167-9317(99)00363-9 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA 247ZF UT WOS:000083250300038 ER PT J AU Vanheusden, K Fleetwood, DM Devine, RAB Warren, WL AF Vanheusden, K Fleetwood, DM Devine, RAB Warren, WL TI Reactions and diffusion during annealing-induced H+ generation in SOI buried oxides SO MICROELECTRONIC ENGINEERING LA English DT Article; Proceedings Paper CT 11th Biennial Conference on Insulating Films on Semiconductors CY JUN 16-19, 1999 CL KLOSTER BANZ, GERMANY SP Stifterverband Deuts Wissenschaft, European Off Aerospace Res & Dev, Airforce Off Sci Res, U S Air Force Res Lab, Infineon Technol, Wacker Siltronic, IEEE Elect Device Soc ID SIO2 THIN-FILMS AB We report experimental results suggesting that mobile protons are generated at strained Si-O-Si bonds near the Si/SiO2 interface during annealing in forming gas. Our data further suggest that the presence of the top Si layer plays a crucial role in the mobile H+ generation process. Finally, we show that the diffusion of the reactive species (presumably H-2 or H-0) towards the H+ generation sites occurs laterally along the buried oxide layer, and can be impeded significantly due to the presence of trapping sites in the buried oxide. C1 USAF, Res Lab, Kirtland AFB, NM 87117 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. France Telecom, Ctr Natl Etud Telecommun, F-38243 Meylan, France. RP Vanheusden, K (reprint author), USAF, Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA. NR 6 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9317 J9 MICROELECTRON ENG JI Microelectron. Eng. PD SEP PY 1999 VL 48 IS 1-4 BP 363 EP 366 DI 10.1016/S0167-9317(99)00406-2 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA 247ZF UT WOS:000083250300080 ER PT J AU Fleetwood, DM Reber, RA Riewe, LC Winokur, PS AF Fleetwood, DM Reber, RA Riewe, LC Winokur, PS TI Thermally stimulated current in SiO2 SO MICROELECTRONICS RELIABILITY LA English DT Review DE thermally stimulated current; radiation effects; oxide reliability; MOS devices; high-field stress; oxide traps; interface traps; border traps; electron traps; trapped-hole energies; deposited oxides ID OXIDE-SEMICONDUCTOR DEVICES; RADIATION-INDUCED CHARGE; POSTIRRADIATION ANNEALING RESPONSE; TRIVALENT SILICON CENTERS; IRRADIATED MOS DEVICES; INTERFACE-TRAP BUILDUP; SIMOX BURIED OXIDES; BORDER TRAPS; CURRENT SPECTROSCOPY; THIN-FILMS AB Thermally stimulated current (TSC) techniques provide information about oxide-trap charge densities and energy distributions in MOS (metal-oxide-semiconductor) capacitors exposed to ionizing radiation or high-field stress that is difficult or impossible to obtain via standard capacitance-voltage or current-voltage techniques. The precision and reproducibility of measurements through repeated irradiation/TSC cycles on a single capacitor is demonstrated with a radiation-hardened oxide, and small sample-to-sample variations are observed. A small increase in E-delta(') center density may occur in some non-radiation-hardened oxides during repeated irradiation/TSC measurement cycles. The importance of choosing an appropriate bias to obtain accurate measurements of trapped charge densities and energy distributions is emphasized. A 10 nm deposited oxide with no subsequent annealing above 400 degrees C shows a different trapped-hole energy distribution than thermally grown oxides, but a similar distribution to thermal oxides is found for deposited oxides annealed at higher temperatures. Charge neutralization during switched-bias irradiation is found to occur both because of hole-electron annihilation and increased electron trapping in the near-interfacial SiO2. Limitations in applying TSC to oxides thinner than similar to 5 nm are discussed, (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fleetwood, DM (reprint author), Vanderbilt Univ, Dept EECS, POB 92,Stn B, Nashville, TN 37235 USA. NR 102 TC 12 Z9 12 U1 0 U2 11 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0026-2714 J9 MICROELECTRON RELIAB JI Microelectron. Reliab. PD SEP PY 1999 VL 39 IS 9 BP 1323 EP 1336 DI 10.1016/S0026-2714(99)00084-0 PG 14 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 255FU UT WOS:000083659500002 ER PT J AU Yan, YF Pennycook, SJ Terauchi, M Tanaka, M AF Yan, YF Pennycook, SJ Terauchi, M Tanaka, M TI Atomic structures of oxygen-associated defects in sintered aluminum nitride ceramics SO MICROSCOPY AND MICROANALYSIS LA English DT Article DE inversion domain boundary; aluminum nitride; convergent-beam electron diffraction; Z-contrast ID INVERSION DOMAIN BOUNDARIES; EXTENDED DEFECTS; ALN AB Convergent-beam electron diffraction and Z-contrast imaging are used to study oxygen-associated defects, flat inversion domain boundaries, dislocations, and interfaces in sintered AlN ceramics. The structures of these defects are directly derived from atomic-resolution Z-contrast images. The flat inversion domain boundaries contain a single Al-O octahedral layer and have a stacking sequence of ...bAaB-bAc-CaAc.., where -cAb- indicates the single octahedral layer. The expansion at the fiat inversion domain boundaries is measured to be 0.06 (+/-0.02) nm. The interfaces between 2H- and polytypoid-AlN are found to be also inversion domain boundaries but their stacking sequence differs from that of the flat inversion domain boundaries. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37830 USA. Tohoku Univ, Res Inst Sci Measurements, Sendai, Miyagi 980, Japan. RP Yan, YF (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 13 TC 2 Z9 2 U1 1 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 1431-9276 J9 MICROSC MICROANAL JI Microsc. microanal. PD SEP-OCT PY 1999 VL 5 IS 5 BP 352 EP 357 PG 6 WC Materials Science, Multidisciplinary; Microscopy SC Materials Science; Microscopy GA 233NJ UT WOS:000082432700003 ER PT J AU Kocks, UF Stout, MG AF Kocks, UF Stout, MG TI Torsion testing for general constitutive relations: Gilles Canova's master's thesis SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article; Proceedings Paper CT Gilles Canova Memorial Symposium on Multi-scale Modelling of Mechanical Propeties of Materials CY JUN 12-15, 1998 CL AUTRANS, FRANCE ID STRAIN; POLYCRYSTALS; STEELS AB Torsion testing is useful but cumbersome: useful as a technique to determine large strain plastic behaviour in a plane-strain mode; cumbersome because the testing of a solid rod provides reliable data in only the simplest of circumstances, for example, when there is no strain hardening or rate sensitivity. The testing of short thin-walled tubes is widely regarded as the best current technique to determine general constitutive behaviour; a drawback is the requirement for large specimen blanks (say, 3 cm cube) and the complex machining procedure. Gilles Canova proposed an alternative-the testing of a series of solid rods of differing diameters, proving the principle by using 10 such rods for one test. We have undertaken a similar series of tests on just four rods plus one short tube for comparison. We found the results from the two types of torsion test in excellent agreement; however, it was not a critical test, inasmuch as the rate sensitivity of the pure copper used was too small. Had it been greater (as, for example, in aluminium and at higher temperature), the evaluation of perhaps six rods would have provided the constitutive response with regard to both hardening and rate sensitivity at the same time-which would require two short-tube rests (plus duplications). The main drawback of the multiple-rod test is that it requires considerable numerical effort in the evaluation. A closer integration with modelling of the constitutive behaviour would be helpful. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kocks, UF (reprint author), Univ Calif Los Alamos Natl Lab, MS K765, Los Alamos, NM 87545 USA. RI Kocks, Fred/E-1159-2011 NR 19 TC 5 Z9 5 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD SEP PY 1999 VL 7 IS 5 BP 675 EP 681 DI 10.1088/0965-0393/7/5/302 PG 7 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 258CM UT WOS:000083820600003 ER PT J AU Tome, CN AF Tome, CN TI Self-consistent polycrystal models: a directional compliance criterion to describe grain interactions SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article; Proceedings Paper CT Gilles Canova Memorial Symposium on Multi-scale Modelling of Mechanical Propeties of Materials CY JUN 12-15, 1998 CL AUTRANS, FRANCE ID TEXTURE DEVELOPMENT; DEFORMATION; ALLOYS AB Viscoplastic self-consistent polycrystal models have been successful in addressing and explaining features of plastic deformation which cannot be treated with the Taylor condition of isostrain. In particular, these models have been applied to the simulation of plastic deformation and texture development in materials with hexagonal, trigonal, orthorhombic and triclinic symmetry. An important assumption required to solve the equilibrium equation within self-consistent formulations is that the strain-rate varies Linearly with the stress in the homogeneous effective medium surrounding the inclusion. The characteristic of such a linear relation has been a matter of debate and two extreme cases can be identified: the tangent and the secant approaches. The secant approach has associated with it a stiffer inclusion-matrix interaction than the tangent approach and is closer to the Taylor approach. In this work we perform a systematic study of the implications of both assumptions on the response of cubic and hexagonal materials (texture development, system activity, stress and strain-rate deviations). In addition, we argue that the strength of the matrix-inclusion interaction should not be constant but should depend on the capability of each orientation to accommodate the particular deformation mode imposed externally. As a consequence, we propose a relative directional compliance (RDC) criterion for defining a variable interaction between grain and matrix depending on their relative compliances and compare the predictions of the RDC approach with the predictions of the secant and the tangent schemes. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Tome, CN (reprint author), Univ Calif Los Alamos Natl Lab, MST-8,MS G755, Los Alamos, NM 87545 USA. RI Tome, Carlos/D-5058-2013 NR 13 TC 73 Z9 73 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD SEP PY 1999 VL 7 IS 5 BP 723 EP 738 DI 10.1088/0965-0393/7/5/305 PG 16 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 258CM UT WOS:000083820600006 ER PT J AU Fivel, MC Canova, GR AF Fivel, MC Canova, GR TI Developing rigorous boundary conditions to simulations of discrete dislocation dynamics SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article; Proceedings Paper CT Gilles Canova Memorial Symposium on Multi-scale Modelling of Mechanical Propeties of Materials CY JUN 12-15, 1998 CL AUTRANS, FRANCE ID STRESSES AB Mesoscale simulations have recently been developed in order to better understand the collective behaviour of dislocations and their effects on the mechanical response. Those simulations deal with dislocations discretized into segments which are allowed to move in a three-dimensional (3D) discrete network. This network is a sublattice of the original crystalline lattice network. The minimum distance between two points is defined by the annihilation distance for two edge dislocations, i.e. the minimum distance for which two edge dislocations can coexist without instantaneous collapse. The elastic theory can still be applied in the simulated volume, since the minimum distance is large compared to the dislocation core radius within which nonlinear expressions should be taken into account in the dislocation-dislocation interaction. This property allows us to use the superposition principle to enforce boundary conditions on the simulation box. This paper details the rigorous boundary conditions applied when the simulation box is supposed to be either a bulk crystal, a free standing film or a finite crystal submitted to a complex loading. C1 Inst Natl Polytech Grenoble, GPM2, CNRS, F-38402 St Martin Dheres, France. RP Canova, GR (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808 L-415, Livermore, CA 94551 USA. OI FIVEL, Marc/0000-0002-0393-2191 NR 18 TC 35 Z9 35 U1 0 U2 10 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD SEP PY 1999 VL 7 IS 5 BP 753 EP 768 DI 10.1088/0965-0393/7/5/308 PG 16 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 258CM UT WOS:000083820600009 ER PT J AU Tang, M Devincre, B Kubin, LP AF Tang, M Devincre, B Kubin, LP TI Simulation and modelling of forest hardening in body centre cubic crystals at low temperature SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article; Proceedings Paper CT Gilles Canova Memorial Symposium on Multi-scale Modelling of Mechanical Propeties of Materials CY JUN 12-15, 1998 CL AUTRANS, FRANCE ID DEFORMATION AB In body centred cubic (bcc) crystals at low temperatures, the thermally activated motion of screw dislocations by the kink-pair mechanism governs the yield properties and also affects the strain hardening properties. In this work, the average strength of dislocation junctions is derived and numerically estimated in the case of Mb and Ta crystals. This allows us to extend an existing simulation of dislocation dynamics in bcc crystals to the case of the motion of a screw dislocation line through a random distribution of forest obstacles. Numerical results are presented in the case of Ta crystals and at two temperatures, 160 K and 215 K. They are complemented by a simple model that applies quite generally to bce metals at low temperatures. It is shown that forest hardening is made up of two contributions, a free-length effect that depends on the length of the mobile screw segments and whose dependence on forest obstacle density is logarithmic and a Line tension effect linearly proportional to the obstacle density. As a result of the thermally activated character of screw dislocation mobility, the relative weight of the two contributions to forest hardening depends on the temperature and strain rate. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Off Natl Etud & Rech Aerosp, CNRS, LEM, F-92322 Chatillon, France. RP Tang, M (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-415, Livermore, CA 94550 USA. NR 26 TC 35 Z9 35 U1 0 U2 10 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD SEP PY 1999 VL 7 IS 5 BP 893 EP 908 DI 10.1088/0965-0393/7/5/319 PG 16 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 258CM UT WOS:000083820600020 ER PT J AU Muschler, J Lochter, A Roskelley, CD Yurchenco, P Bissell, MJ AF Muschler, J Lochter, A Roskelley, CD Yurchenco, P Bissell, MJ TI Division of labor among the alpha 6 beta 4 integrin, beta 1 integrins, and an E3 laminin receptor to signal morphogenesis and beta-casein expression in mammary epithelial cells SO MOLECULAR BIOLOGY OF THE CELL LA English DT Article ID BASEMENT-MEMBRANE; EXTRACELLULAR-MATRIX; GENE-EXPRESSION; ALPHA(6)BETA(4) INTEGRIN; TYROSINE PHOSPHORYLATION; A-CHAIN; MONOCLONAL-ANTIBODIES; SUBMANDIBULAR-GLAND; ALPHA-DYSTROGLYCAN; CYCLE PROGRESSION AB Contact of cultured mammary epithelial cells with the basement membrane protein laminin induces multiple responses, including cell shape changes, growth arrest, and, in the presence of prolactin, transcription of the milk protein beta-casein. We sought to identify the specific laminin receptor(s) mediating the multiple cell responses to laminin. Using assays with clonal mammary epithelial cells, we reveal distinct functions for the alpha 16 beta 4 integrin, beta 1 integrins, and an E3 laminin receptor. Signals from laminin for beta-casein expression were inhibited in the presence of function-blocking antibodies against both the alpha 6 and pi integrin subunits and by the laminin E3 fragment. The alpha 6-blocking antibody perturbed signals mediated by the alpha 6 beta 4 integrin, and the beta 1-blocking antibody perturbed signals mediated by another integrin, the a subunit(s) of which remains to be determined. Neither alpha 6- nor beta 1-blocking antibodies perturbed the cell shape changes resulting from cell exposure to laminin. However, the E3 laminin fragment and heparin both inhibited cell shape changes induced by laminin, thereby implicating an E3 laminin receptor in this function. These results elucidate the multiplicity of cell-extracellular matrix interactions required to integrate cell structure and signaling and ultimately permit normal cell function. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. Ctr Clin & Basic Res, Ballerup, Denmark. Univ British Columbia, Dept Anat, Vancouver, BC V6T 1W5, Canada. Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Dept Pathol, Piscataway, NJ 08854 USA. RP Muschler, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RI Roskelley, Calvin /F-4630-2011 FU NCI NIH HHS [CA57621, R01 CA057621]; NIDDK NIH HHS [R01 DK036425] NR 70 TC 88 Z9 91 U1 0 U2 2 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1999 VL 10 IS 9 BP 2817 EP 2828 PG 12 WC Cell Biology SC Cell Biology GA 236KJ UT WOS:000082598500003 PM 10473629 ER PT J AU Sindelar, L Wheeland, A Lindquist, K Cepeda, M Bercovitz, J Humpries, D AF Sindelar, L Wheeland, A Lindquist, K Cepeda, M Bercovitz, J Humpries, D TI Adapting the Tecan Genesis 2 meter Workstation for high density gel loading. SO MOLECULAR PSYCHIATRY LA English DT Meeting Abstract C1 Joint Genome Inst, Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, HAMPSHIRE, ENGLAND SN 1359-4184 J9 MOL PSYCHIATR JI Mol. Psychiatr. PD SEP PY 1999 VL 4 SU 1 MA 110 BP S61 EP S61 PG 1 WC Biochemistry & Molecular Biology; Neurosciences; Psychiatry SC Biochemistry & Molecular Biology; Neurosciences & Neurology; Psychiatry GA 254FG UT WOS:000083600800210 ER PT J AU Ghan, SJ Leung, LR McCaa, J AF Ghan, SJ Leung, LR McCaa, J TI A comparison of three different modeling strategies for evaluating cloud and radiation parameterizations SO MONTHLY WEATHER REVIEW LA English DT Article ID COMMUNITY CLIMATE MODEL; MICROPHYSICS; VALIDATION AB parallel simulations of clouds and radiation fields by a single-column model (SCM), a regional circulation model, and a global circulation model (GCM), each using the same treatment of all physical processes and approximately the same spatial resolution, are compared with observations at the Atmospheric Radiation Measurement Clouds and Radiation Testbed in the southern Great Plains. Significant differences between model simulations are evident for individual cloud systems, but these differences are not systematic, varying from cloud system to cloud system. Several systematic differences between model simulations and observations are identified. These biases are about the same for each model and are much larger than differences between model simulations, suggesting that for some purposes one model can serve as a testbed for parameterizations developed for another. The role of nudging in the simulations is explored by driving the SCM with large-scale forcing from a GCM simulation. The authors find that nudging of SCM temperature and humidity toward the GCM simulation, using the inverse of the advective timescale for the nudging coefficient, reduces errors in the SCM simulation when artificial errors in the forcing are introduced. The authors also find that nudging of temperature and humidity hides physics errors introduced in the SCM, but only if the physics errors involve processes that directly influence temperature or humidity. Thus, errors in the treatment of nucleation, collision-coalescence, collection, and gravitational settling would not be hidden by nudging, but errors in the treatment of radiative heating, condensation/vapor deposition, evaporation/sublimation, melting, cumulus convection, and subgrid or resolved transport of heat and moisture would be hidden by nudging. C1 Pacific NW Lab, Atmospher Sci Grp, Richland, WA 99352 USA. Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA. RP Ghan, SJ (reprint author), Pacific NW Lab, Atmospher Sci Grp, POB 999,Battelle Blvd, Richland, WA 99352 USA. RI Ghan, Steven/H-4301-2011 OI Ghan, Steven/0000-0001-8355-8699 NR 19 TC 24 Z9 24 U1 0 U2 5 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD SEP PY 1999 VL 127 IS 9 BP 1967 EP 1984 DI 10.1175/1520-0493(1999)127<1967:ACOTDM>2.0.CO;2 PG 18 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 240XD UT WOS:000082851600003 ER PT J AU Jones, PW AF Jones, PW TI First- and second-order conservative remapping schemes for grids in spherical coordinates SO MONTHLY WEATHER REVIEW LA English DT Article ID SHALLOW-WATER EQUATIONS AB Coupling atmosphere, ocean, sea ice, and land surface models requires a means for remapping fields between grids in an accurate and conservative manner. A method is described here for computing interpolation weights for first- and second-order conservative remappings. The method is completely general and call be used for any grid on a sphere. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Jones, PW (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, POB 1663,Mail Stop B216, Los Alamos, NM 87545 USA. NR 8 TC 160 Z9 165 U1 1 U2 12 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD SEP PY 1999 VL 127 IS 9 BP 2204 EP 2210 DI 10.1175/1520-0493(1999)127<2204:FASOCR>2.0.CO;2 PG 7 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 240XD UT WOS:000082851600017 ER PT J AU Wassom, JS AF Wassom, JS TI Frederick J. de Serres: the Oak Ridge years (1955-1972) SO MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH LA English DT Biographical-Item C1 ORNL Life Sci Div, Human Genome & Toxicol Grp, Oak Ridge, TN 37830 USA. RP Wassom, JS (reprint author), ORNL Life Sci Div, Human Genome & Toxicol Grp, 1060 Commerce Pk MS-6480, Oak Ridge, TN 37830 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1383-5742 J9 MUTAT RES-REV MUTAT JI Mutat. Res.-Rev. Mutat. Res. PD SEP PY 1999 VL 437 IS 2 BP 65 EP 67 PG 3 WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology GA 250VT UT WOS:000083410400002 PM 10610429 ER PT J AU Torres-Martinez, CL Nguyen, L Kho, R Bae, W Bozhilov, K Klimov, V Mehra, RK AF Torres-Martinez, CL Nguyen, L Kho, R Bae, W Bozhilov, K Klimov, V Mehra, RK TI Biomolecularly capped uniformly sized nanocrystalline materials: glutathione-capped ZnS nanocrystals SO NANOTECHNOLOGY LA English DT Article; Proceedings Paper CT 6th Foresight Conference CY NOV 12-15, 1998 CL SANTA CLARA, CALIFORNIA ID QUANTUM SEMICONDUCTOR CRYSTALLITES; CADMIUM-SULFIDE CRYSTALLITES; SCHIZOSACCHAROMYCES-POMBE; FISSION YEAST; PHOTOCATALYTIC DEGRADATION; COLLOIDAL SEMICONDUCTORS; PHOTOPHYSICAL PROPERTIES; CDS BIONANOCRYSTALLITES; PHYTOCHELATIN COMPLEXES; ELECTRONIC-STRUCTURE AB Micro-organisms such as bacteria and yeasts form CdS to detoxify toxic cadmium ions. Frequently, CdS particles formed in yeasts and bacteria were found to be associated with specific biomolecules. It was later determined that these biomolecules were present at the surface of CdS. This coating caused a restriction in the growth of CdS particles and resulted in the formation of nanometre-sized semiconductors (NCs) that exhibited typical quantum confinement properties. Glutathione and related phytochelatin peptides were shown to be the biomolecules that capped CdS nanocrystallites synthesized by yeasts Candida glabrata and Schizosacchromyces pombe. Although early studies showed the existence of specific biochemical pathways for the synthesis of biomolecularly capped CdS NCs, these NCs could be formed in vitro under appropriate conditions. We have recently shown that cysteine and cysteine-containing peptides such as glutathione and phytochelatins can be used in vitro, to dictate the formation of discrete sizes of CdS and ZnS nanocrystals. We have evolved protocols for the synthesis of ZnS or CdS nanocrystals within a narrow size distribution range. These procedures involve three steps: (1) formation of metallo-complexes of cysteine or cysteine-containing peptides, (2) introduction of stoichiometric amounts of inorganic sulfide into the metallo-complexes to initiate the formation of nanocrystallites and finally (3) size-selective precipitation of NCs with ethanol in the presence of Na+. The resulting NCs were characterized by optical spectroscopy, high-resolution transmission electron microscopy (HRTEM), x-ray diffraction and electron diffraction. HRTEM showed that the diameter of the ZnS-glutathione nanocrystals was 3.45 +/- 0.5 nm. X-ray diffraction and electron diffraction analyses indicated ZnS-glutathione to be hexagonal. Photocatalytic studies suggest that glutathione-capped ZnS nanocrystals prepared by our procedure are highly efficient in degrading a test model compound. C1 Univ Calif Riverside, Environm Toxicol Grad Program, Riverside, CA 92521 USA. Univ Calif Riverside, Analyt Electron Microscopy Facil, Riverside, CA 92521 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Mehra, RK (reprint author), Univ Calif Riverside, Environm Toxicol Grad Program, Riverside, CA 92521 USA. NR 93 TC 48 Z9 48 U1 0 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD SEP PY 1999 VL 10 IS 3 BP 340 EP 354 DI 10.1088/0957-4484/10/3/319 PG 15 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 236RW UT WOS:000082613200020 ER PT J AU Sattelberger, AP Atcher, RW AF Sattelberger, AP Atcher, RW TI Nuclear medicine finds the right chemistry SO NATURE BIOTECHNOLOGY LA English DT News Item C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. RP Sattelberger, AP (reprint author), Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, POB 1663, Los Alamos, NM 87545 USA. OI Atcher, Robert/0000-0003-4656-2247 NR 6 TC 10 Z9 10 U1 0 U2 1 PU NATURE AMERICA INC PI NEW YORK PA 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD SEP PY 1999 VL 17 IS 9 BP 849 EP 850 DI 10.1038/12832 PG 2 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 232HU UT WOS:000082365800019 PM 10471919 ER PT J AU Goldman, MV Oppenheim, MM Newman, DL AF Goldman, MV Oppenheim, MM Newman, DL TI Theory of localized bipolar wave-structures and nonthermal particle distributions in the auroral ionosphere SO NONLINEAR PROCESSES IN GEOPHYSICS LA English DT Article ID ELECTROSTATIC SOLITARY WAVES AB Bipolar wave structures and nonthermal particle distributions measured by the FAST satellite in regions of downward current are interpreted in terms of the nonlinear evolution of a two-stream instability. The instability results in holes, both in the electron distribution in phase space and in the electron density in real space. The wave potential energy, which traps the electrons, has a single minimum, and the associated electric field is bipolar. The early bipolar structures are coherent over hundreds of Debye lengths in the direction perpendicular to the magnetic field. After thousands of plasma periods the perpendicular coherence is lost, the structures break up, and electrostatic whistlers begin to dominate. Simulations and preliminary analysis of this breakup and emission process are presented. C1 Univ Colorado, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA. Boston Univ, Dept Astron, Boston, MA 02215 USA. Univ Calif Los Alamos Natl Lab, Adv Comp Lab, Los Alamos, NM 87545 USA. RP Goldman, MV (reprint author), Univ Colorado, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA. OI Oppenheim, Meers/0000-0002-8581-6177 NR 14 TC 27 Z9 27 U1 0 U2 0 PU EUROPEAN GEOPHYSICAL SOCIETY PI KATLENBURG-LINDAU PA MAX-PLANCK-STR 13, 37191 KATLENBURG-LINDAU, GERMANY SN 1023-5809 J9 NONLINEAR PROC GEOPH JI Nonlinear Process Geophys. PD SEP-DEC PY 1999 VL 6 IS 3-4 BP 221 EP 228 PG 8 WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences GA 306FR UT WOS:000086587100011 ER PT J AU Unal, C Bohl, WR Pasamehmetoglu, KO AF Unal, C Bohl, WR Pasamehmetoglu, KO TI Modeling of radiation heat transport in complex ladder-like structures placed in rectangular enclosures SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB Complex ladder-like structures recently have been considered as the target design for accelerator applications. The decay heat, during a postulated beyond design-basis loss-of-coolant accident in the target where all normal and emergency cooling fails, is removed mainly by radiation heat transfer. Modeling of the radiation transport in complex ladder-like structures has several challenges and limitations when the standard net-radiation model is used. This paper proposes a simplified lumped, or 'hot-rung' model, that considers the worst elements and utilizes the standard net-radiation method. The net-radiation model would under-predict structure temperatures if surfaces were subject to non-uniform radiosity. The proposed model was assessed to suggest corrections to account for the non-uniform radiosity. The non-uniform radiosity effect causes the proposed hot-rung model to under-predict the center-rung temperatures by approximate to 4-74 degrees C when all parametrics, including temperatures up to 1500 degrees C, were considered. These temperatures are small. The proposed model predicted that an important effect of decreasing the emissivity was smoothing of non-isothermal effects. The radiosity effects are more pronounced when there are strong temperature gradients. Uniform rung temperatures tend to decrease the radiosity effects. We concluded that a relatively simple model that is conservative with respect to radiosity effects could be developed. (C) 1999 Published by Elsevier Science S.A. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Technol & Safety Assessment Div, Nucl Syst Design & Anal Grp, Los Alamos, NM 87545 USA. RP Unal, C (reprint author), Univ Calif Los Alamos Natl Lab, Technol & Safety Assessment Div, Nucl Syst Design & Anal Grp, TSA-10,MS K575, Los Alamos, NM 87545 USA. NR 5 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD SEP PY 1999 VL 193 IS 1-2 BP 173 EP 183 DI 10.1016/S0029-5493(99)00152-1 PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 256EY UT WOS:000083714000014 ER PT J AU Paniagua, J Rohatgi, US Prasad, V AF Paniagua, J Rohatgi, US Prasad, V TI Modeling of thermal hydraulic instabilities in single heated channel loop during startup transients SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB A thermal hydraulics computer code was developed to simulate the geysering instability in a natural circulation system starting from subcooled conditions and to assess the impact of the system pressure and channel inlet subcooling on the inception of instability. The formulation of thermal hydraulics is inherently general and accounts for both single-phase liquid flow and nonhomogeneous, nonequilibrium two-phase flow. The computer code is based on momentum integral method where the current practice of basing fluid properties on the system averaged pressure has been relaxed and the local properties are based on local pressures estimated using the shape of steady-state pressure distribution, thereby, improving the predictions while preserving the computation speed, one of the important strength of the integral methods. This is an important modeling feature since the local vapor generation rate depends on local saturation temperature The methodology has been validated with the experiments conducted to investigate the instabilities in a low pressure natural circulation loop at low powers and high inlet subcoolings. The numerical simulations predicted periodic channel flow reversal, which is one of the feature of condensation-induced geysering. Basing local properties on local pressures instead of system. average pressure led to decrease in the discrepancy in the prediction of the positive side amplitude from 40% to 6% and in the frequency from - 15% to 5%. In addition, it was observed that the start-up instability can be avoided by increasing system pressure or by decreasing channel inlet subcooling. This study showed that the integral method coupled with local pressure variation for the vapor generation model is suitable to predict startup or geysering transients. (C) 1999 Published by Elsevier Science S.A. All rights reserved. C1 SUNY Stony Brook, Dept Mech Engn, Stony Brook, NY 11794 USA. RP Rohatgi, US (reprint author), Brookhaven Natl Lab, Dept Adv Technol, POB 5000,Bldg 475B, Upton, NY 11973 USA. NR 35 TC 23 Z9 24 U1 1 U2 4 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD SEP PY 1999 VL 193 IS 1-2 BP 207 EP 226 DI 10.1016/S0029-5493(99)00156-9 PG 20 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 256EY UT WOS:000083714000017 ER PT J AU Fischer, LE Howe, A AF Fischer, LE Howe, A TI Qualification of independent spent fuel storage installation SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article; Proceedings Paper CT 7th International Symposium on Current Issues Related to Nuclear Power Plant Structures, Equipment and Piping CY DEC 01-04, 1998 CL RALEIGH, NORTH CAROLINA SP North Carolina State Univ, US Nuclear Regulatory Commiss & Elect Power Res Inst AB This paper describes the qualification process of a typical independent spent fuel storage installation (ISFSI). It provides background information regarding the licensing and history of ISFSIs. It discusses the process for obtaining a general ISFSI license. A typical ISFSI with its dry cask storage system (DCSS) is described. A description is presented of a typical confirmatory action taken on a DCSS to assure adequate qualification and full compliance of the system with Federal regulations. (C) 1999 Published by Elsevier Science S.A. All rights reserved. C1 Univ Calif Lawrence Livermore Natl Lab, Appl Res Div, Livermore, CA 94551 USA. US Nucl Regulatory Commiss, Spent Fuel Projects, Washington, DC 20555 USA. RP Fischer, LE (reprint author), Univ Calif Lawrence Livermore Natl Lab, Appl Res Div, POB 808,L-641, Livermore, CA 94551 USA. NR 1 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD SEP PY 1999 VL 192 IS 2-3 BP 217 EP 228 DI 10.1016/S0029-5493(99)00110-7 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 255EE UT WOS:000083655900010 ER PT J AU Norris, WE Naus, DJ Graves, HL AF Norris, WE Naus, DJ Graves, HL TI Inspection of nuclear power plant containment structures SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article; Proceedings Paper CT 7th International Symposium on Current Issues Related to Nuclear Power Plant Structures, Equipment and Piping CY DEC 01-04, 1998 CL RALEIGH, NORTH CAROLINA SP North Carolina State Univ, US Nuclear Regulatory Commiss & Elect Power Res Inst AB Safety-related nuclear power plant (NPP) structures are designed to withstand loadings from a number of low-probability external and interval events, such as earthquakes, tornadoes, and loss-of-coolant accidents. Loadings incurred during normal plant operation, therefore, generally are not significant enough to cause appreciable degradation. However, these structures are susceptible to aging by various processes depending on the operating environment and service conditions. The effects of these processes may accumulate within these structures over time to cause failure under design conditions, or lead to repair. Steel and concrete containment structures in nuclear power plants are described and their potential degradation factors identified. Reported incidences of containment degradation are summarized. Current regulatory in-service inspection requirements are reviewed. Nondestructive examination techniques commonly used to inspect NPP steel and concrete structures to identify and quantify the amount of damage present are described, and their capabilities and limitations identified. Finally, areas where nondestructive evaluation techniques require development (i.e. inaccessible portions of the containment pressure boundary, and thick heavily reinforced concrete sections) are identified and prior research addressing these needed developments summarized. (C) 1999 Elsevier Science S.A. All rights reserved. C1 US Nucl Regulatory Commiss, Off Nucl Regulatory Res, Div Engn, Washington, DC 20555 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Norris, WE (reprint author), US Nucl Regulatory Commiss, Off Nucl Regulatory Res, Div Engn, Mail Stop T1OL1, Washington, DC 20555 USA. NR 22 TC 6 Z9 6 U1 1 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD SEP PY 1999 VL 192 IS 2-3 BP 303 EP 329 DI 10.1016/S0029-5493(99)00125-9 PG 27 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 255EE UT WOS:000083655900017 ER PT J AU Skinner, CH Gentile, CA Menon, MM Barry, RE AF Skinner, CH Gentile, CA Menon, MM Barry, RE TI Flaking of co-deposited hydrogenated carbon layers on the TFTR limiter SO NUCLEAR FUSION LA English DT Letter ID FUSION TEST REACTOR; TRITIUM RETENTION; BUMPER LIMITER; WALL AB Flaking of co-deposited layers on the inner limiter tiles was recently observed in TFTR. This phenomenon was unexpected and has occurred since the termination of plasma operations on 4 April 1997. Flaking affects approximately 15% of the observable tiles and appears on isotropic graphite but not on carbon fibre composite tiles. Photographic images of the flakes and precise measurements of the limiter geometry are reported. The mobilizability of tritium retained in co-deposited layers is an important factor in safety analyses of future DT reactors. A programme to analyse the flakes and tiles is underway. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Skinner, CH (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. EM cskinner@pppl.gov NR 27 TC 35 Z9 35 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0029-5515 EI 1741-4326 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9 BP 1081 EP 1085 DI 10.1088/0029-5515/39/9/301 PG 5 WC Physics, Fluids & Plasmas SC Physics GA 245FQ UT WOS:000083095900001 ER PT J AU Strachan, JD AF Strachan, JD TI TFTR L mode energy confinement related to deuterium influx SO NUCLEAR FUSION LA English DT Letter ID FUSION TEST REACTOR; BEAM FUELING PROFILE; TOKAMAK; PLASMAS; PERFORMANCE; DISCHARGES AB Tokamak energy confinement scaling in TFTR L mode and supershot regimes is discussed. The main result is that TFTR L mode plasmas fit the supershot scaling law for energy confinement. In both regimes, plasma transport coefficients increased with increased edge deuterium influx. The common L mode confinement scaling law on TFTR is also inversely proportional to the volume of wall material that is heated to a high temperature, possibly the temperature at which the deuterium sorbed in the material becomes detrapped and highly mobile. The deuterium influx is increased by: (a) increased beam power due to a deeper heated depth in the edge components and (b) decreased plasma current due to an increased wetted area as governed by the empirically observed dependence of the SOL width upon plasma current. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Strachan, JD (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 24 TC 5 Z9 5 U1 1 U2 3 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9 BP 1093 EP 1096 DI 10.1088/0029-5515/39/9/303 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 245FQ UT WOS:000083095900003 ER PT J AU Zweben, SJ Darrow, DS Fredrickson, ED Taylor, G von Goeler, S White, RB AF Zweben, SJ Darrow, DS Fredrickson, ED Taylor, G von Goeler, S White, RB TI MHD induced alpha particle loss in TFTR SO NUCLEAR FUSION LA English DT Article ID FUSION TEST REACTOR; ALFVEN EIGENMODES; TEARING MODES; MEV IONS; TOKAMAK; CONFINEMENT; REDISTRIBUTION; DEUTERIUM; PRODUCTS AB Increases in alpha particle loss due to MHD activity in TFTR were observed for both coherent modes and transient reconnection events using an array of scintillator detectors near the wall. The magnitude of the coherent MHD induced alpha loss was normally comparable to the MHD quiescent first orbit or TF ripple loss, but the magnitude of the alpha loss during reconnection events was up to 1000 times higher than this for a short time. Modelling suggests that the coherent MHD loss mechanism will be less significant for future reactor scale DT tokamaks due to the smaller ratio of the alpha gyroradius to the minor radius. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Zweben, SJ (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI White, Roscoe/D-1773-2013 OI White, Roscoe/0000-0002-4239-2685 NR 31 TC 31 Z9 31 U1 0 U2 8 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9 BP 1097 EP 1109 DI 10.1088/0029-5515/39/9/304 PG 13 WC Physics, Fluids & Plasmas SC Physics GA 245FQ UT WOS:000083095900004 ER PT J AU Krasilnikov, AV Medley, SS Gorelenkov, NN Budny, RV Darrow, DS Roquemore, AL AF Krasilnikov, AV Medley, SS Gorelenkov, NN Budny, RV Darrow, DS Roquemore, AL TI Study of acceleration, confinement and sawtooth induced redistribution of fast resonant protons during ICRH in TFTR SO NUCLEAR FUSION LA English DT Article ID ALPHA-PARTICLES; PLASMAS; TOKAMAK; IONS; JET; BEHAVIOR; TRITONS; BEAM AB A natural diamond detector (NDD), developed in the Russian Federation, has been used for the first time for fast charge exchange H-0 atom spectrometry and flux evolution measurements during H+ minority ICRH experiments in deuterium plasmas in TFTR. The behaviour of deeply trapped RF driven H+ ions was studied in quiescent plasmas and under the influence of sawtooth oscillations during central and off-axis ICRH. Hf ion energy spectra measured by the NDD yielded data on the efficiency of Hf minority ion acceleration by ICRF waves and the H+ ion confinement at different ICRH powers and resonance layer positions. The evolution of the hydrogen charge exchange atom flux measured by the NDD was compared with fast proton losses measured by escaping charged particle detectors to demonstrate that fast H+ ions are redistributed from the plasma core to well beyond the q = 1 surface. The redistribution is sufficiently far from the plasma centre for fast ions to leave the plasma due to stochastic ripple diffusion. In contrast with non-deeply-trapped fast ions, Alfven eigenmode (AE) activity does not significantly affect the spatial and energy distributions of deeply trapped fast ions. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Krasilnikov, AV (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 27 TC 16 Z9 16 U1 0 U2 3 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9 BP 1111 EP 1121 DI 10.1088/0029-5515/39/9/305 PG 11 WC Physics, Fluids & Plasmas SC Physics GA 245FQ UT WOS:000083095900005 ER PT J AU Maingi, R Watkins, JG Mahdavi, MA Owen, LW AF Maingi, R Watkins, JG Mahdavi, MA Owen, LW TI Pump plenum pressure dependence on divertor plasma parameters and magnetic geometry in the DIII-D tokamak SO NUCLEAR FUSION LA English DT Article ID CRYOCONDENSATION PUMP AB A first-fight neutral transport model to describe the dependence of pump plenum neutral pressure on plasma parameters and magnetic geometry is presented. It is shown that the model is in excellent agreement with neutral pressure data from a low recycling DIII-D tokamak discharge. It is also shown that the main contribution to plenum pressure arises from the part of the ion particle flux profile which is closest to the plenum entrance. This work illustrates the sufficiency of a simple model in divertor plenum hardware design studies to maximize particle exhaust for density control. C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Maingi, R (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. EM rmaingi@pppl.gov NR 21 TC 18 Z9 18 U1 0 U2 3 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9 BP 1187 EP 1192 DI 10.1088/0029-5515/39/9/311 PG 6 WC Physics, Fluids & Plasmas SC Physics GA 245FQ UT WOS:000083095900011 ER PT J AU Ishida, S AF Ishida, S CA JT-60 Team TI JT-60U high performance regimes SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 17th IAEA Fusion Energy Conference CY OCT 19-24, 1998 CL YOKOHAMA, JAPAN ID INTERNAL TRANSPORT BARRIER; REVERSED SHEAR DISCHARGES AB High performance regimes of JT-60U plasmas are presented with an emphasis upon the results from the use of a semiclosed pumped divertor with a W shaped geometry. Plasma performance in transient and quasi-steady states has been significantly improved in reversed shear and high beta(p) regimes. The reversed shear regime elevated an equivalent Q(DT)(eq) transiently up to 1.25 (n(D)(0) T-TE(i)(0) = 8.6 x 10(20) m(-3) . s . KeV) in a reactor relevant thermonuclear dominant regime. Long sustainment of enhanced confinement with internal transport barriers (ITBs) with fully non-inductive current drive in a reversed shear discharge was successfully demonstrated with LH wave injection. Performance sustainment has been extended in the high beta(p) regime with high triangularity, achieving a long sustainment of plasma conditions equivalent to Q(DT)(eq) approximate to 0.16 (n(D)(0) T-TE i(0) approximate to 1.4 x 10(20) m(-3) . s . keV) for similar to 4.5 s with a large non-inductive current drive fraction of 60-70% of the plasma current. Thermal and particle transport analyses show significant reduction of thermal and particle diffusivities around the ITB, resulting in a strong E-r shear in the ITB region. The W shaped divertor is effective for helium ash exhaust, demonstrating a steady exhaust capability of tau(*He)/(TE) approximate to 3-10, which is favourable for ITER. Suppression of neutral backflow and chemical sputtering effects has been observed, while MARFE onset density is rather decreased. Negative ion based neutral beam injection (N-NBI) experiments have created a clear H mode transition. An enhanced ionization cross-section due to multistep ionization processes was confirmed as theoretically predicted. A current density profile driven by N-NBI is measured in good agreement with the theoretical prediction. N-NBI induced TAEs characterized as persistent and bursting oscillations have been observed from a low hot beta of [beta(h)] approximate to 0.1-0.2% terized as persistent and bursting oscillations have been observed from a low hot beta of [beta(h)] approximate to 0.1-0.2% without a significant loss of fast ions. C1 Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 31101, Japan. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Australian Natl Univ, Canberra, ACT, Australia. Univ Wisconsin, Madison, WI 53706 USA. Acad Sinica, Beijing, Peoples R China. Univ Tsukuba, JAERI, Doctoral Course, Tsukuba, Ibaraki 305, Japan. Ioffe Inst, St Petersburg, Russia. Gen Atom Co, San Diego, CA 92138 USA. DV Efremov Sci Res Inst, St Petersburg, Russia. Kurchatov Inst, Moscow, Russia. SW Inst Phys, Chengdu, Peoples R China. RP Ishida, S (reprint author), Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 31101, Japan. RI Kikuchi, Mitsuru/O-1036-2015; ISHIDA, SHINICHI/E-7046-2017 OI Kikuchi, Mitsuru/0000-0002-5485-8737; NR 32 TC 33 Z9 33 U1 4 U2 8 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9Y SI 1 BP 1211 EP 1226 DI 10.1088/0029-5515/39/9Y/301 PG 16 WC Physics, Fluids & Plasmas SC Physics GA 245FU UT WOS:000083096200002 ER PT J AU Watkins, ML AF Watkins, ML CA JET Team TI Physics of high performance JET plasmas in DT SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 17th IAEA Fusion Energy Conference CY OCT 19-24, 1998 CL YOKOHAMA, JAPAN ID DEUTERIUM-TRITIUM PLASMAS; MAGNETIC SHEAR; DIII-D; CONFINEMENT; TOKAMAKS; TRANSPORT AB The Joint European Torus (JET) has recently operated with deuterium-tritium (DT) mixtures, carried out an International Thermonuclear Experimental Reactor (ITER) physics campaign in hydrogen, deuterium, DT and tritium, installed the Mark IIGB 'Gas Box' divertor fully by remote handling and started physics experiments with this more closed divertor. The DT experiments set records for fusion power (16.1 MW), ratio of fusion power to plasma input power (0.62, and 0.95 +/- 0.17 if a similar plasma could be obtained in steady state) and fusion duration (4 MW for 4 s). A large scale tritium supply and processing plant, the first of its kind, allowed the repeated use of the 20 g of tritium on-site to supply 99.3 g of tritium to the machine. The H mode threshold power is significantly lower in DT, but the global energy confinement time is practically unchanged (no isotope effect). Dimensionless scaling 'wind tunnel' experiments in DT extrapolate to ignition with ITER parameters. The scaling is close to gyro-Bohm, but the mass dependence is not correct. Separating the thermal plasma energy into core and pedestal contributions could resolve this discrepancy (leading to proper gyro-Bohm scaling for the core) and also account for confinement degradation at high density and at high radiated power. Several radiofrequency heating schemes have been tested successfully in DT, shearing good agreement with calculations. Alpha particle heating has been clearly observed and is consistent with classical expectations. Internal transport barriers have been established in optimized magnetic shear discharges in DT and steady state conditions have been approached with simultaneous internal and edge transport barriers. First results with the newly installed Mark IIGB divertor show that the in-out symmetry of the divertor plasma can be modified using differential gas fuelling, that optimized shear discharges can be produced and that krypton gas puffing is effective in restoring L mode edge conditions and establishing an internal transport barrier in such discharges. C1 Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England. UKAEA, Didcot, Oxon, England. Univ London, Imperial Coll, London, England. AF Ioffe Inst, St Petersburg, Russia. Univ Leicester, Leicester, Leics, England. IST, Ctr Fuseo Nucl, Lisbon, Portugal. KFA, Julich, Germany. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. UKAEA, Culham Lab, Abingdon OX14 3DB, Oxon, England. Uppsala Univ, Dept Neutron Res, Uppsala, Sweden. Royal Inst Technol, S-10044 Stockholm, Sweden. MIT, Cambridge, England. CEA, St Paul Durance, France. Univ Manchester, Inst Sci & Technol, Manchester M60 1QD, Lancs, England. FOM, Inst Plasmafys, Nieuwegein, Netherlands. Univ Lund, Lund, Sweden. Gen Atom Co, San Diego, CA USA. Helsinki Univ Technol, FIN-02150 Espoo, Finland. EPFL, CRPP, CH-1015 Lausanne, Switzerland. Univ Toronto, Inst Aerosp Studies, Toronto, ON, Canada. VTT Energy, Helsinki, Finland. RP Watkins, ML (reprint author), Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England. RI Nave, Maria/A-5581-2013 OI Nave, Maria/0000-0003-2078-6584 NR 34 TC 15 Z9 15 U1 0 U2 2 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9Y SI 1 BP 1227 EP 1244 PG 18 WC Physics, Fluids & Plasmas SC Physics GA 245FU UT WOS:000083096200003 ER PT J AU Leaper, RJ Alberts, TE Asay, JR Baca, PM Baker, KL Breeze, SP Chandler, GA Cook, DL Cooper, GW Deeney, C Derzon, MS Douglas, MR Fehl, DL Gilliland, T Hebron, DE Hurst, MJ Jobe, DO Kellogg, JW Lash, JS Lazier, SE Matzen, MK McDaniel, DH McGurn, JS Mehlhorn, TA Moats, AR Mock, RC Muron, DJ Nash, TJ Olson, RE Porter, JL Quintenz, JP Reyes, PV Ruggles, LE Ruiz, CL Sanford, TWL Schmidlapp, FA Seamen, JF Spielman, RB Stark, MA Struve, KW Stygar, WA Tibbetts-Russell, DR Torres, JA Vargas, T Wagoner, TC Wakefield, C Hammer, JH Ryutov, DD Tabak, M Wilks, SC Bowers, RL McLenithan, KD Peterson, DL AF Leaper, RJ Alberts, TE Asay, JR Baca, PM Baker, KL Breeze, SP Chandler, GA Cook, DL Cooper, GW Deeney, C Derzon, MS Douglas, MR Fehl, DL Gilliland, T Hebron, DE Hurst, MJ Jobe, DO Kellogg, JW Lash, JS Lazier, SE Matzen, MK McDaniel, DH McGurn, JS Mehlhorn, TA Moats, AR Mock, RC Muron, DJ Nash, TJ Olson, RE Porter, JL Quintenz, JP Reyes, PV Ruggles, LE Ruiz, CL Sanford, TWL Schmidlapp, FA Seamen, JF Spielman, RB Stark, MA Struve, KW Stygar, WA Tibbetts-Russell, DR Torres, JA Vargas, T Wagoner, TC Wakefield, C Hammer, JH Ryutov, DD Tabak, M Wilks, SC Bowers, RL McLenithan, KD Peterson, DL TI Z pinch driven inertial confinement fusion target physics research at Sandia National Laboratories SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 17th IAEA Fusion Energy Conference CY OCT 19-24, 1998 CL YOKOHAMA, JAPAN AB Three hohlraum concepts are being pursued at Sandia National Laboratories (SNL) to investigate the possibility of using pulsed power driven magnetic implosions (Z pinches) to drive targets capable of fusion yields in the range 200-1000 MJ. This research is being conducted on SNL's Z facility, which is capable of driving peak currents of 20 MA in various Z pinch load configurations that produce implosion velocities as high as 7.5 x 10(7) cm/s, X ray energies of 1-2 MJ and X ray powers of 100-250 TW. The first concept, denoted dynamic hohlraum, has achieved a temperature of 180 +/- 14 eV in a configuration suitable for driving capsules. In addition, this concept has also achieved a temperature of 230 +/- 18 eV in an arrangement suitable for driving an external hohlraum. The second concept, denoted static walled hohlraum, has achieved temperatures of similar to 80-100 eV. Experimental investigation of the third concept, denoted Z pinch driven hohlraum, has recently begun. The article discusses each of these hohlraum concepts and provides an overview of the experiments that have been conducted on these systems to date. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM USA. RP Leaper, RJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 21 TC 9 Z9 9 U1 2 U2 10 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9Y SI 1 BP 1283 EP 1294 PG 12 WC Physics, Fluids & Plasmas SC Physics GA 245FU UT WOS:000083096200007 ER PT J AU Stratton, BC Budny, RV Darrow, DS Fisher, RK Fredrickson, ED Fu, GY Medley, SS Nazikian, R Petrov, MP Redi, MH Ruskov, E Taylor, G White, RB Zweben, SJ AF Stratton, BC Budny, RV Darrow, DS Fisher, RK Fredrickson, ED Fu, GY Medley, SS Nazikian, R Petrov, MP Redi, MH Ruskov, E Taylor, G White, RB Zweben, SJ CA TFTR Grp TI Energetic particle transport and alpha driven instabilities in advanced confinement DT plasmas on TFTR SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 17th IAEA Fusion Energy Conference CY OCT 19-24, 1998 CL YOKOHAMA, JAPAN ID TOROIDAL ALFVEN EIGENMODES; DEUTERIUM-TRITIUM PLASMAS; REVERSED MAGNETIC SHEAR; FUSION TEST REACTOR; TOKAMAK; DISCHARGES; EXCITATION; BEHAVIOR AB The article reviews the physics of fusion alpha particles and energetic neutral beam ions studied in the final phase of TFTR operation, with an emphasis on observations in reversed magnetic shear (RS) and enhanced reversed shear (ERS) DT plasmas. Energy resolved measurements of the radial profiles of confined, trapped alphas in RS plasmas exhibit reduced core alpha density with increasing alpha energy, in contrast to plasmas with normal monotonic shear. The measured profiles are consistent with predictions of increased alpha loss due to stochastic ripple diffusion and increased first orbit loss in RS plasmas. In experiments in which a short tritium beam pulse is injected into a deuterium RS plasma, the measured DT neutron emission is lower than standard predictions assuming first orbit loss and stochastic ripple diffusion of the beam ions. A microwave reflectometer measured the spatial localization of low toroidal mode number (n), alpha driven toroidal Alfven eigenmodes (TAEs) in DT RS discharges. Although the observed ballooning character of the n = 4 mode is consistent with predictions of a kinetic MHD stability code, the observed antiballooning nature of the n = 2 mode is not. Furthermore, the modelling does not show the observed strong dependence of mode frequency on n. These alpha driven TAEs do not cause measurable alpha loss in TFTR. Other Alfven frequency modes with n = 2-4 seen in both DT and DD ERS and RS discharges are localized to the weak magnetic shear region near q(min). In 10-20% of DT discharges, normal low n MHD activity causes alpha loss at levels above the first orbit loss rate. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Gen Atom Co, San Diego, CA USA. AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. RP Stratton, BC (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI White, Roscoe/D-1773-2013 OI White, Roscoe/0000-0002-4239-2685 NR 30 TC 9 Z9 10 U1 0 U2 2 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9Y SI 1 BP 1309 EP 1319 DI 10.1088/0029-5515/39/9Y/308 PG 11 WC Physics, Fluids & Plasmas SC Physics GA 245FU UT WOS:000083096200009 ER PT J AU Okamura, S Matsuoka, K Akiyama, R Darrow, DS Ejiri, A Fujisawa, A Fujiwara, M Goto, M Ida, K Idei, H Iguchi, H Inoue, N Isobe, M Itoh, K Kado, S Khlopenkov, K Kondo, T Kubo, S Lazaros, A Lee, S Matsunaga, G Minami, T Morita, S Murakami, S Nakajima, N Nikai, N Nishimura, S Nomura, I Ohdachi, S Ohkuni, K Osakabe, M Pavlichenko, R Peterson, BJ Sakamoto, R Sanuki, H Sasao, M Shimizu, A Shirai, Y Sudo, S Takagi, S Takahashi, C Takayama, S Takechi, M Tanaka, K Toi, K Watari, T Yamazaki, K Yokoyama, M Yoshimura, Y AF Okamura, S Matsuoka, K Akiyama, R Darrow, DS Ejiri, A Fujisawa, A Fujiwara, M Goto, M Ida, K Idei, H Iguchi, H Inoue, N Isobe, M Itoh, K Kado, S Khlopenkov, K Kondo, T Kubo, S Lazaros, A Lee, S Matsunaga, G Minami, T Morita, S Murakami, S Nakajima, N Nikai, N Nishimura, S Nomura, I Ohdachi, S Ohkuni, K Osakabe, M Pavlichenko, R Peterson, BJ Sakamoto, R Sanuki, H Sasao, M Shimizu, A Shirai, Y Sudo, S Takagi, S Takahashi, C Takayama, S Takechi, M Tanaka, K Toi, K Watari, T Yamazaki, K Yokoyama, M Yoshimura, Y TI Confinement physics study in a small low aspect ratio helical device: CHS SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 17th IAEA Fusion Energy Conference CY OCT 19-24, 1998 CL YOKOHAMA, JAPAN SP IAEA ID NEUTRAL BEAM INJECTION; HELIOTRON TORSATRON; ELECTRIC-FIELD; STELLARATOR; SYSTEM; PROBE AB Variation of the plasma position relative to the centre of the helical coil winding is a very effective means of controlling the MHD stability and the trapped particle confinement in heliotron/torsatron systems, but improving one of these two characteristics with this parameter simultaneously has a detrimental effect on the other. The inward shifted configuration is favourable for drift orbit optimization but is predicted to be unstable according to the Mercier criterion. Various physics problems, such as electric field structure, plasma rotation and MHD phenomena, have been studied in the Compact Helical System (CHS) with a compromise intermediate position. With this standard configuration, CHS has yielded experimental results that contribute to the understanding of general toroidal, confinement physics and low aspect ratio helical systems. In the recent experiments; it was found that a wide range of inward shifted configurations give stable plasma discharges without any restriction to the special pressure profile. Such an enhanced range of operation made it possible to study experimentally the drift orbit optimized configuration in heliotron/torsatron systems. The effect of configuration improvement was studied with plasmas in a low collisionality regime. C1 Natl Inst Fus Sci, Toki, Japan. Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Univ Tokyo, Grad Sch Sci, Tokyo 113, Japan. Grad Univ Adv Studies, Toki, Japan. Natl Tech Univ Athens, Athens, Greece. Nagoya Univ, Dept Energy Engn & Sci, Nagoya, Aichi, Japan. RP Okamura, S (reprint author), Natl Inst Fus Sci, Toki, Japan. EM okamura@nifs.ac.jp RI Sakamoto, Ryuichi/E-7557-2013; Murakami, Sadayoshi/A-2191-2016; Ida, Katsumi/E-4731-2016 OI Sakamoto, Ryuichi/0000-0002-4453-953X; Murakami, Sadayoshi/0000-0002-2526-7137; Ida, Katsumi/0000-0002-0585-4561 NR 30 TC 42 Z9 42 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0029-5515 EI 1741-4326 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 1999 VL 39 IS 9Y SI 1 BP 1337 EP 1350 DI 10.1088/0029-5515/39/9Y/310 PG 14 WC Physics, Fluids & Plasmas SC Physics GA 245FU UT WOS:000083096200011 ER PT J AU Lee, Y Gough, RA Leung, KN Vujic, J Williams, MD Zahir, N AF Lee, Y Gough, RA Leung, KN Vujic, J Williams, MD Zahir, N TI Co-axial multicusp source for low axial energy spread ion beam production SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE multicusp ion source; energy spread; ion beam AB A co-axial multicusp ion source has been designed and tested. This source uses a new magnetic filter configuration. This magnetic filter is efficient in modifying the plasma potential distribution which can reduce the axial energy spread of the extracted ion beam. Energy spreads as low as 0.6 eV have been obtained. The electron temperature in this source has also been found to be about 0.1 eV. Furthermore, the new source configuration is capable of adjusting the radial plasma potential distribution which can improve the transverse ion energy, which results in a low beam emittance. The co-axial source can be used for a number of different applications such as ion projection lithography and radioactive ion beam projets. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM yylee@lbl.gov NR 9 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 1 PY 1999 VL 433 IS 3 BP 579 EP 586 DI 10.1016/S0168-9002(99)00274-0 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 232XH UT WOS:000082394900001 ER PT J AU Seestrom, SJ Frankle, CM Bowman, JD Crawford, BC Haseyama, T Masaike, A Matsuda, A Penttila, SI Roberson, RN Sharapov, EI Stephenson, SL AF Seestrom, SJ Frankle, CM Bowman, JD Crawford, BC Haseyama, T Masaike, A Matsuda, A Penttila, SI Roberson, RN Sharapov, EI Stephenson, SL TI Apparatus for parity-violation study via capture gamma-ray measurements SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE CsI-pure detector array; polarized neutrons; parity violation ID LONGITUDINAL ASYMMETRY; NEUTRON-CAPTURE; NONCONSERVATION; SYSTEM; LA-139 AB The Time Reversal and Parity at Low Energy (TRIPLE) Collaboration uses a short-pulsed longitudinally polarized epithermal neutron beam at the Los Alamos Neutron Science Center to study spatial parity violation (PV) in the compound nucleus. The typical PV experiment measures the longitudinal cross-section asymmetry by the neutron transmission method through thick samples. Neutron capture gamma-ray measurement provides an alternative method for the study of PV, which enables the use of smaller amounts of isotopically pure target material. In 1995 TRIPLE commissioned a new neutron-capture detector consisting of 24 pure CsI scintillators arranged in a cylindrical geometry around the neutron beam. The characteristics and the performance of the detector and spin transport are described. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Duke Univ, Durham, NC 27708 USA. Triangle Univ Nucl Lab, Durham, NC 27708 USA. Kyoto Univ, Dept Phys, Kyoto 60601, Japan. Joint Inst Nucl Res, Dubna 141980, Russia. N Carolina State Univ, Raleigh, NC 27695 USA. RP Seestrom, SJ (reprint author), Los Alamos Natl Lab, POB 1663,MS H803, Los Alamos, NM 87545 USA. EM seestrom@lanl.gov NR 23 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 1 PY 1999 VL 433 IS 3 BP 603 EP 613 DI 10.1016/S0168-9002(99)00481-7 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 232XH UT WOS:000082394900004 ER PT J AU Lamoreaux, SK Golub, R AF Lamoreaux, SK Golub, R TI Comment on "A proposed method for measuring the electric dipole moment of the neutron using acceleration in an electric field gradient and ultracold neutron interferometry" SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material AB We discuss the proposal of Freedman, Ringo and Dombeck (Nucl. Instr. and Meth. A 396 (1997) 181) to search for the neutron electric dipole moment using the acceleration of ultracold neutrons in an inhomogeneous electric field followed by amplification of the resulting displacement by several methods involving spin independent interactions (gravity) or reflection from curved (spin independent) mirrors. We show that the proposed technique is inferior to the usual methods based on magnetic resonance. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. Hahn Meitner Inst Kernforsch Berlin GmbH, D-14103 Berlin, Germany. RP Lamoreaux, SK (reprint author), Univ Calif Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 1 PY 1999 VL 433 IS 3 BP 690 EP 695 DI 10.1016/S0168-9002(99)00373-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 232XH UT WOS:000082394900015 ER PT J AU Dombeck, TW Ringe, GR AF Dombeck, TW Ringe, GR TI Reply to: Comment on "A proposed method for measuring the electric dipole moment of the neutron using acceleration in an electric field gradient and ultracold neutron interferometry" SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material C1 Fermilab, Batavia, IL 60510 USA. RP Dombeck, TW (reprint author), Fermilab, MS 316 ICB 2W,POB 500, Batavia, IL 60510 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 1 PY 1999 VL 433 IS 3 BP 696 EP 696 DI 10.1016/S0168-9002(99)00529-X PG 1 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 232XH UT WOS:000082394900016 ER PT J AU Lamoreaux, SK Golub, R AF Lamoreaux, SK Golub, R TI Additional comments on "A proposed method for measuring the electric dipole moment of the neutron using acceleration in an electric field gradient and ultracold neutron interferometry" SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material AB We have previously (Lamoreaux and Golub, Los Alamos archive (xxx) nucl-ex/9901007vs, Nucl. Instr. and Meth., A 433 (1999)) presented an analysis, using classical, semi-classical and quantum mechanical tehniques, of the proposal of Freedman et al., (Nucl. Instr. and Meth., A 396 (1997) 181) to search for the neutron electric dipole moment by the use of acceleration of ultracold neutrons in an inhomogeneous electric field followed by amplification of the resulting displacement by several methods involving spin independent interactions (gravity) or reflection from curved (spin independent) mirrors. Following the appearance of some more recent comments (Peshkin, Los Alamos archive (xxx) nucl-ex/9903012 v2; Dombeck and Ringo, Nucl. Instr. and Meth., A 433 (1999)) it now seems reasonable to publish a revised version of our quantum mechanical treatment (Section 2 B of Ref. [1]) with a more detailed exposition. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. Hahn Meitner Inst Kernforsch Berlin GmbH, D-14109 Berlin, Germany. RP Lamoreaux, SK (reprint author), Univ Calif Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 1 PY 1999 VL 433 IS 3 BP 697 EP 701 DI 10.1016/S0168-9002(99)00528-8 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 232XH UT WOS:000082394900017 ER PT J AU Doyle, BL Vizkelethy, G Walsh, DS Senftinger, B Mellon, M AF Doyle, BL Vizkelethy, G Walsh, DS Senftinger, B Mellon, M TI A new approach to nuclear microscopy: the ion-electron emission microscope SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, ID ACQUISITION; SYSTEM AB A new multidimensional high lateral resolution ion beam analysis technique, ion-electron emission microscopy (IEEM) is described. Using MeV energy ions, IEEM is shown to be capable of ion beam induced charge collection (IBICC) measurements in semiconductors. IEEM should also capable of microscopically and multidimensionally mapping the surface and bulk composition of solids. As such, TEEM has nearly identical capabilities as traditional nuclear microprobe analysis, with the advantage that the ion beam does not have to be focused. The technique is based on determining the position where an individual ion enters the surface of the sample by projection secondary electron emission microscopy. The x-y origination point of a secondary electron, and hence the impact coordinates of the corresponding incident ion, is recorded with a position sensitive detector connected to a standard photoemission electron microscope (PEEM). These signals are then used to establish coincidence with IBICC, atomic, or nuclear reaction induced ion beam analysis signals simultaneously caused by the incident ion. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Radiat Solid Interact & Proc Dept 1111, Albuquerque, NM 87185 USA. Staib Instrumente GMBH, Langenbach, Germany. Quantar Technol Inc, Santa Cruz, CA USA. RP Doyle, BL (reprint author), Sandia Natl Labs, Radiat Solid Interact & Proc Dept 1111, POB 5800,MS1056, Albuquerque, NM 87185 USA. NR 13 TC 37 Z9 37 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 6 EP 17 DI 10.1016/S0168-583X(99)00312-2 PG 12 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700003 ER PT J AU Roberts, ML Grant, PG Bench, GS Brown, TA Frantz, BR Morse, DH Antolak, AJ AF Roberts, ML Grant, PG Bench, GS Brown, TA Frantz, BR Morse, DH Antolak, AJ TI The stand-alone microprobe at Livermore SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, DE ion microprobe; PIXE; STIM ID MICROSCOPY; SPERM; DNA AB Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories/California have jointly constructed a new stand-alone microprobe facility. Although the facility was built to develop a method to rapidly locate and determine elemental concentrations of micron scale particulates on various media using PIXE, the facility has found numerous applications in biology and materials science. The facility is located at LLNL and uses a General loner Corporation Model 358 duoplasmatron negative ion source, a National Electrostatics Corporation 5SDH-2 tandem accelerator, and an Oxford triplet lens. Features of the system include complete computer control of the beam transport using LabVIEW(TM) for Macintosh, computer controlled beam collimating and divergence limiting slits, automated sample positioning to micron resolution, and video optics for beam positioning and sample observation. Data collection is accomplished with the simultaneous use of as many as four EG&G Ortec IGLET-X(TM) X-Ray detectors,digital amplifiers made by X-Ray Instruments and Associates (XIA), and LabVIEW(TM) For Macintosh acquisition software. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. Sandia Natl Labs, Livermore, CA 94551 USA. RP Roberts, ML (reprint author), Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, POB 808,L-397, Livermore, CA 94551 USA. NR 8 TC 13 Z9 13 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 24 EP 30 DI 10.1016/S0168-583X(99)00362-6 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700005 ER PT J AU Morse, DH Antolak, AJ Bench, GS Roberts, ML AF Morse, DH Antolak, AJ Bench, GS Roberts, ML TI A flexible LabVIEW (TM)-based data acquisition and analysis system for scanning microscopy SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, DE acquisition; scan; microprobe; microscopy ID NUCLEAR MICROPROBE; PACKAGE AB A new data analysis system has been developed with computer-controlled beam and sample positioning, video sample imaging, multiple large solid angle detectors for X-rays and gamma-rays, and surface barrier detectors for charged particles. The system uses the LabVIEW(TM) programming language allowing it to be easily ported between different computer operating systems. In the present configuration, digital signal processors are directly interfaced to a SCSI CAMAC controller. However, the modular software design permits the substitution of other hardware with LabVIEW-supported drivers. On-line displays of histogram and two-dimensional elemental map images provide a user-friendly data acquisition interface. Subregions of the two-dimensional maps may be selected interactively for detailed analysis or for subsequent scanning. Off-line data processing of archived data currently yields elemental maps, analyzed spectra and reconstructions of tomographic data. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Livermore, CA 94551 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Morse, DH (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. NR 9 TC 6 Z9 7 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 146 EP 152 DI 10.1016/S0168-583X(99)00507-8 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700025 ER PT J AU McDaniel, FD Guo, BN Renfrow, SN El Bouanani, M Duggan, JL Doyle, BL Walsh, DS Aton, TJ AF McDaniel, FD Guo, BN Renfrow, SN El Bouanani, M Duggan, JL Doyle, BL Walsh, DS Aton, TJ TI Ion beam Induced charge collection (IBICC) of integrated circuits using a 10 MeV carbon microbeam SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, DE diode junction; microbeam; charge collection; soft error; single event upset; ion beam induced charge collection ID INDUCED SOFT ERRORS; MEMORIES AB This paper presents ion beam induced charge collection (IBICC) data that simulates cosmic neutron-induced Si recoil effects in TC test structures. The experiments, conducted at Sandia National Laboratories, employed a 10 MeV Carbon microbeam with 1 mu m diameter spot to scan test: structure on specifically designed ICs. The test structure contains junctions typical of SRAMs and DRAMs. With the aid of IC layout information, an analysis of the charge collection efficiency from different: test areas is given. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ N Texas, Ion Beam Modificat & Anal Lab, Dept Phys, Denton, TX 76203 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Texas Instruments Inc, Silicon Technol Dev, Dallas, TX 75265 USA. RP McDaniel, FD (reprint author), Univ N Texas, Ion Beam Modificat & Anal Lab, Dept Phys, Denton, TX 76203 USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 264 EP 269 DI 10.1016/S0168-583X(99)00313-4 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700045 ER PT J AU Schone, N Walsh, DS Sexton, FW Doyle, BL Dodd, PE Aurand, JF Wing, N AF Schone, N Walsh, DS Sexton, FW Doyle, BL Dodd, PE Aurand, JF Wing, N TI Time-resolved ion beam induced charge collection (TRIBICC) in micro-electronics SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, ID TRANSIENTS; DAMAGE AB A focused 12-MeV carbon ion micro-beam was used to acquire multiple single ion transients at various locations of a single CMOS transistor. Complete current transients induced by single ions were measured at a 5 GPIz analog bandwidth, The current transients reveal clear and discernible contributions of drift and diffusive charge collection. Estimates are presented for the drift assisted, funneling charge collection depth. Radiation damage effects on drift and diffusive charge collection are reported. Transients measured for drain and off-drain ion strikes compare well to 3D DAVINCI calculations, (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 USAF, Res Lab, VSSE, Kirtland AFB, NM 87117 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Schone, N (reprint author), USAF, Res Lab, VSSE, 3550 Aberdeen Ave, Kirtland AFB, NM 87117 USA. NR 12 TC 24 Z9 24 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 424 EP 431 DI 10.1016/S0168-583X(99)00355-9 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700071 ER PT J AU Vizkelethy, G Brunett, BA Walsh, DS James, RB Olsen, RW Doyle, BL AF Vizkelethy, G Brunett, BA Walsh, DS James, RB Olsen, RW Doyle, BL TI Ion microbeam studies of cadmium zinc telluride radiation detectors by IBICC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 6th International Conference on Nuclear Microprobe Technology and Applications CY OCT 11-16, 1998 CL CAPE TOWN, SOUTH AFRICA SP Natl Accelerator Ctr, Nucl Microprobe Unit, Schonland Res Ctr Nucl Sci, ID BEAM-INDUCED CHARGE; NUCLEAR MICROPROBE AB Ion beam induced charge collection (IBICC) and time resolved IBICC (TRIBICC) techniques were used for imaging electronic properties of cadmium zinc telluride (CZT) room temperature radiation detectors. The detectors were bombarded with a scanned 5.4 MeV He microbeam and the detector response was analyzed at each point. The electron mobility (mu(e)) and lifetime (tau(e)), and charge collection efficiency maps were calculated from the data. In order to determine the radiation damage to the detectors, the signal deterioration was measured as the function of dose. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Idaho State Univ, Dept Phys, Pocatello, ID 83209 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Carnegie Mellon Univ, ECE Dept, Pittsburgh, PA 15213 USA. RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM gvizkel@sandia.gov NR 15 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X EI 1872-9584 J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 1999 VL 158 IS 1-4 BP 437 EP 444 DI 10.1016/S0168-583X(99)00381-X PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 255JX UT WOS:000083666700073 ER PT J AU Huston, MA AF Huston, MA TI Local processes and regional patterns: appropriate scales for understanding variation in the diversity of plants and animals SO OIKOS LA English DT Review ID TREE SPECIES RICHNESS; LATITUDINAL GRADIENTS; GLOBAL PATTERNS; ASSEMBLY RULES; MOIST FORESTS; NEW-WORLD; COMMUNITIES; AREA; COMPETITION; ENERGY AB Determining the causes of variation in species diversity requires linking the scales at which variation in diversity is measured to the scales at which the processes hypothesized to affect diversity actually operate. Published analyses of the relative effects of local versus regional processes on species diversity have failed to measure diversity at spatial scales relevant to local processes. The effects of local processes, such as competition, can only be detected at appropriately small local scales, and are obscured by large samples that aggregate environmental heterogeneity. Relatively few ecological and evolutionary processes can be identified as uniquely regional in scale, and local processes are expected to produce regional-scale differences between regions that differ consistently in environmental conditions that affect local processes. The relative contributions of regional properties and local processes are hypothesized to vary predictably along certain environmental gradients, and to produce locally regulated patterns of species diversity at scales ranging from a few millimeters to the entire globe. C1 Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Huston, MA (reprint author), Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA. RI Huston, Michael/B-1434-2009 OI Huston, Michael/0000-0001-9513-1166 NR 53 TC 439 Z9 455 U1 14 U2 147 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0030-1299 J9 OIKOS JI Oikos PD SEP PY 1999 VL 86 IS 3 BP 393 EP 401 DI 10.2307/3546645 PG 9 WC Ecology SC Environmental Sciences & Ecology GA 230JN UT WOS:000082248200001 ER PT J AU Nostrand, MC Page, RH Payne, SA Krupke, WF Schunemann, PG AF Nostrand, MC Page, RH Payne, SA Krupke, WF Schunemann, PG TI Room-temperature laser action at 4.3-4.4 mu m in CaGa2S4 : Dy3+ SO OPTICS LETTERS LA English DT Article ID SPECTROSCOPY; EMISSION; DY3+; YLF AB We report room-temperature mid-IR laser operation in a new low-phonon-frequency nonhygroscopic host crystal, calcium thiogallate (CaGa2S4). Laser action at 4.31-4.38 mu m on the Dy3+ H-6(11/2) --> H-6(13/2) transition occurred with a maximum slope efficiency of 1.6%. (C) 1999 Optical Society of America. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Sanders, Nashua, NH 03061 USA. RP Nostrand, MC (reprint author), Univ Calif Lawrence Livermore Natl Lab, L-482, Livermore, CA 94550 USA. NR 27 TC 57 Z9 58 U1 0 U2 6 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 1 PY 1999 VL 24 IS 17 BP 1215 EP 1217 DI 10.1364/OL.24.001215 PG 3 WC Optics SC Optics GA 231XZ UT WOS:000082337800011 PM 18073988 ER PT J AU Knickelbein, MB AF Knickelbein, MB TI The spectroscopy and photophysics of isolated transition-metal clusters SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Review ID ENERGY PHOTOELECTRON-SPECTROSCOPY; ELECTRONIC SHELL STRUCTURE; SMALL VANADIUM CLUSTERS; INFRARED MULTIPHOTON EXCITATION; DENSITY-FUNCTIONAL CALCULATIONS; RESOLVED THERMIONIC EMISSION; SURFACE PLASMA RESONANCES; SMALL CHROMIUM CLUSTERS; SMALL SILVER CLUSTERS; COOLED COPPER TRIMER AB Transition-metal clusters are large heavy molecules possessing many low-lying electronic states, and can be produced under isolated conditions (i.e. in molecular or ion beams) only at very low number densities. As a result, many of the traditional methods of molecular spectroscopy cannot be used to study these species. However, newer techniques, developed within the last 15 years, have proven successful in probing neutral and charged transition-metal clusters. In this (selective) review, the strengths and weaknesses of these techniques are discussed, with recent examples provided. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Knickelbein, MB (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 124 TC 19 Z9 19 U1 0 U2 2 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1999 VL 79 IS 9 BP 1379 EP 1400 PG 22 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA 237PH UT WOS:000082664900017 ER PT J AU Pomerantz, M Akbari, H Berdahl, P Konopacki, SJ Taha, H Rosenfeld, AH AF Pomerantz, M Akbari, H Berdahl, P Konopacki, SJ Taha, H Rosenfeld, AH TI Reflective surfaces for cooler buildings and cities SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID SKY RADIATION AB Many roofs and pavements are dark coloured. In warm and sunny climates these surfaces become hot by absorbing sunlight. This can have the undesirable consequences of increasing the heat how into the building beneath the hot roofs, which then increases the demand for air conditioning. The hot surfaces also heat the outside air, again increasing air conditioning demand but also increasing the concentration of ozone (smog). We estimate the benefits of replacing (as part of routine maintenance) the present dark surfaces with more reflective surfaces. We conclude that it is a practical way to save energy and to reduce smog in warm climates. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. US DOE, Washington, DC 20585 USA. RP Pomerantz, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 25 TC 10 Z9 10 U1 2 U2 6 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNPOWDER SQUARE, LONDON EC4A 3DE, ENGLAND SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1999 VL 79 IS 9 BP 1457 EP 1476 DI 10.1080/13642819908216984 PG 20 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA 237PH UT WOS:000082664900023 ER PT J AU Mikulla, R Schaaf, G Trebin, HR AF Mikulla, R Schaaf, G Trebin, HR TI Gamma-surfaces in quasicrystals SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID ICOSAHEDRAL QUASI-CRYSTALS; SHEAR-STRESS; DISLOCATIONS; SIMULATION AB The concept of generalized stacking faults and the associated gamma-surfaces provides a useful tool for the analysis of dislocation core structures in crystalline materials. Applied to quasicrystals, suitable Burgers vectors for a given slip plane can be identified by calculating the minima of the gamma-surface. Instead of using a specific interaction model, we motivate a relation between structural properties and a subset of the minima of the gamma-surface. The results agree with calculations based on pair potentials. As a consequence the continuum of possible Burgers vectors in physical space is reduced to a quasiperiodic set, described in terms of a strip-projection method. Further conclusions for the plasticity of quasicrystals are discussed. C1 Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, Los Alamos, NM 87544 USA. Univ Stuttgart, Inst Theoret & Angew Phys, D-70550 Stuttgart, Germany. RP Mikulla, R (reprint author), Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, POB 1663, Los Alamos, NM 87544 USA. NR 13 TC 5 Z9 5 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNPOWDER SQUARE, LONDON EC4A 3DE, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD SEP PY 1999 VL 79 IS 9 BP 721 EP 727 DI 10.1080/095008399176779 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 238LD UT WOS:000082711000010 ER PT J AU Seibert, M Thurnauer, M AF Seibert, M Thurnauer, M TI Therese Marie Cotton-Uphaus (1939-1998) - Obituary SO PHOTOSYNTHESIS RESEARCH LA English DT Biographical-Item C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Seibert, M (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0166-8595 J9 PHOTOSYNTH RES JI Photosynth. Res. PD SEP PY 1999 VL 61 IS 3 BP 193 EP 196 PG 4 WC Plant Sciences SC Plant Sciences GA 268EQ UT WOS:000084401700001 ER PT J AU Zheng, H Jiang, M Nikolova, R Welp, U Paulikas, AP Huang, Y Crabtree, GW Veal, BW Claus, H AF Zheng, H Jiang, M Nikolova, R Welp, U Paulikas, AP Huang, Y Crabtree, GW Veal, BW Claus, H TI High critical current "weld'' joints in textured YBa2Cu3Ox SO PHYSICA C LA English DT Article DE welding; T-c superconductors; YBa2Cu3Ox ID GRAIN-BOUNDARIES; BULK; MAGNETIZATION; BICRYSTALS; GROWTH; FILMS AB A technique has been developed to "weld" parts made from textured high T-c superconductors of the type RBa2Cu3Ox (R = Y or rare earth element). The weld joint supports a supercurrent comparable to that carried by the joined parts. Welding is accomplished by using the textured parts to seed a spacer material which has a lower decomposition temperature than the material comprising the parts. In this paper, we demonstrate the technique by welding YBa2Cu3Ox parts with a TmBa2Cu3Ox spacer layer. The weld joints were evaluated with SEM, optical and magneto-optical imaging techniques. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Illinois, Dept Phys, Chicago, IL 60607 USA. RP Veal, BW (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 18 TC 44 Z9 45 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD SEP 1 PY 1999 VL 322 IS 1-2 BP 1 EP 8 DI 10.1016/S0921-4534(99)00395-0 PG 8 WC Physics, Applied SC Physics GA 243NQ UT WOS:000083004500001 ER PT J AU Fournier, KB Goldstein, WH Stutman, D Finkenthal, M Soukhanovskii, V May, MJ AF Fournier, KB Goldstein, WH Stutman, D Finkenthal, M Soukhanovskii, V May, MJ TI Population inversion and gain calculations for 4p(5)4d-4p(5)5p and 4p(5)5s-4p(5)5p Kr-like transitions in YIV, ZrV, NbVI and MoVII SO PHYSICA SCRIPTA LA English DT Article ID X-RAY LASERS; FEMTOSECOND-PULSE-DRIVEN; ENERGY-LEVELS; MO-VII; AMPLIFICATION; SPECTRUM; ULTRAVIOLET; IONIZATION; AMPLIFIER; TARGET AB We present calculations of the quasi-steady state gain coefficient for the 4p(5)4d P-1-4p(5)5p 1/2[1/2](0) transition in Kr-like Y IV, Zr V, Nh VI and Mo VII ions. Gain coefficients which can lead to FUV-VUV (similar to 260 to 60 nm) lasing are found in all ions. Large gain coefficients are found for each ion at temperatures in excess of the ion's equilibrium temperature; realizing lasing in these systems will require a transient excitation mechanism. The density at which the maximal gain coefficient obtains increases for increasing ionization state. The 4p(5)5s 1/2[1/2](1)-4p(5)5p 1/2[1/2](0) and 4p(5)5s 3/2[3/2](1)-4p(5)5p 1/2[1/2](0) transitions also show population inversion and modest gain coefficients Attractive features of these ions as potential lasents are the large ratio between the energy of the lasing transition and the excitation energy of the upper level of the lasing transition as well as the ease with which they are produced in a low temperature, table-top scale plasma source. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Johns Hopkins Univ, Plasma Spect Grp, Baltimore, MD 21218 USA. Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. RP Fournier, KB (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-41, Livermore, CA 94550 USA. RI Stutman, Dan/P-4048-2015 NR 41 TC 2 Z9 2 U1 0 U2 2 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0281-1847 J9 PHYS SCRIPTA JI Phys. Scr. PD SEP PY 1999 VL 60 IS 3 BP 236 EP 241 DI 10.1238/Physica.Regular.060a00236 PG 6 WC Physics, Multidisciplinary SC Physics GA 236GQ UT WOS:000082592200010 ER PT J AU Choi, IH Eom, SH Yu, PY AF Choi, IH Eom, SH Yu, PY TI Soft phonon mode and the anomalous temperature dependence of band gap in AgGaS2 SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID CUGAS2 AB We report the first observation of a low energy phonon mode in the low-temperature and resonantly-enhanced Raman spectra of AgGaS2. This mode appears as sidebands of one-phonon Raman modes at T < 100 K. Its frequency is 8.0 cm(-1) at T = 3.4 K and decreases to 5.7 cm(-1) at 90 K. The mode becomes overdamped and difficult to resolve as Tis increased to 100 K. We tentatively attribute this "soft mode" with a zone-edge phonon which is observable in two-phonon combination Raman scattering. When alloyed with Cu both the soft mode and the anomalous blueshift of the band gap in AgGaS2 are suppressed. We propose that this soft mode is responsible for the anomalous blue-shift of the band gap in AgGaS2 at low temperature. C1 Chung Ang Univ, Dept Phys, Seoul 156756, South Korea. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Choi, IH (reprint author), Chung Ang Univ, Dept Phys, Seoul 156756, South Korea. NR 14 TC 5 Z9 5 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 99 EP 104 DI 10.1002/(SICI)1521-3951(199909)215:1<99::AID-PSSB99>3.0.CO;2-# PG 6 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800016 ER PT J AU Kim, HJ Vogelgesang, R Ramdas, AK Rodriguez, S Grimsditch, M Anthony, TR AF Kim, HJ Vogelgesang, R Ramdas, AK Rodriguez, S Grimsditch, M Anthony, TR TI Zeeman effect of Lyman transitions: Electronic Raman spectrum of boron accepters in diamond SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID ISOTOPICALLY CONTROLLED DIAMONDS; INFRARED-SPECTRA AB Substitutional boron impurities in diamond exhibit characteristic Lyman transitions, originating in the lower 1s(p(3/2)): Gamma(8) ground state and terminating in its spin-orbit split 1s(p(1/2)): Gamma(7) counterpart. In addition to the Lyman spectrum observed in the infrared having p-like final states, the 1S(P-3/2) --> 1S(p(1/2)) transition (Delta') appears as an electronic Raman line. We have investigated the Zeeman effect bf the Delta' Raman line for magnetic field B along different crystallographic directions, for a variety of scattering geometries. The Zeeman components for B parallel to [001], corresponding to pseudo-angular momentum change of 0, +/-2 (+/-1), with incident light polarized perpendicular (parallel) to B, occur with relative intensities proportional to the squares of the Luttinger parameters, taking account of thermal depopulation effects. In addition, Raman transitions within the 1s(p(3/2)) Zeeman multiplet, i.e. Raman electron-paramagnetic-resonance (EPR) lines, are observed. Measurements yield g-factors for the orbital and spin contributions to the Zeeman energy and are g(1) = -0.39 +/- 0.04 and g(2) = -2.04 +/- 0.10, respectively, which characterize the Gamma(8) and Gamma(7) multiplets. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. GE, Corp Res & Dev, Schenectady, NY 12309 USA. RP Kim, HJ (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RI Vogelgesang, Ralf/B-4460-2009 OI Vogelgesang, Ralf/0000-0002-1026-3205 NR 14 TC 0 Z9 0 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 109 EP 114 DI 10.1002/(SICI)1521-3951(199909)215:1<109::AID-PSSB109>3.0.CO;2-S PG 6 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800018 ER PT J AU Schwoerer-Bohning, M Macrander, AT Pabst, M Pavone, P AF Schwoerer-Bohning, M Macrander, AT Pabst, M Pavone, P TI Phonons in wurtzite aluminum nitride SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID LATTICE-DYNAMICS; SINGLE-CRYSTALS; GAN; SCATTERING; ALN AB We present data obtained with inelastic X-ray scattering measurements of the phonon dispersions in hexagonal aluminum nitride along all three high-symmetry directions. These are the first such data for AIN. Presently available single crystals are large enough to perform an inelastic X-ray scattering experiment. The results are compared with first-principles calculations. We find excellent agreement between the data and the calculations. C1 Argonne Natl Lab, Adv Photon Source, Carnegie Inst Washington, Argonne, IL 60439 USA. Argonne Natl Lab, Adv Photon Source, Expt Facil Div, Argonne, IL 60439 USA. Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany. RP Schwoerer-Bohning, M (reprint author), Argonne Natl Lab, Adv Photon Source, Carnegie Inst Washington, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 14 TC 31 Z9 31 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 177 EP 180 DI 10.1002/(SICI)1521-3951(199909)215:1<177::AID-PSSB177>3.0.CO;2-8 PG 4 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800029 ER PT J AU Aeppli, G Hayden, SM Dai, P Mook, HA Hunt, RD Perring, TG Dogan, F AF Aeppli, G Hayden, SM Dai, P Mook, HA Hunt, RD Perring, TG Dogan, F TI The weights of various features in the magnetic spectra of cuprates SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID NEUTRON-SCATTERING; FLUCTUATIONS; YBA2CU3O6+X AB We review briefly the magnetic fluctuation spectra, obtained by neutron scattering, of the high temperature superconductor YBa2Cu3O6.6 (T-c = 62.7 K). The resonance at 34 meV is the most prominent spectral feature in the superconducting state. Even so, its net weight accounts for a mere 1% of the total squared moment expected for planar Cu2+ ions. For context, we also provide a discussion of the spectral weights associated with the magnetic order and spin waves in two-dimensional S = 1/2 Heisenberg antiferromagnets. C1 NEC, Princeton, NJ 08540 USA. Univ Bristol, Bristol BS8 1TL, Avon, England. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Rutherford Appleton Lab, Didcot QX11 0QX, Oxon, England. Univ Washington, Seattle, WA 98195 USA. RP Aeppli, G (reprint author), NEC, 4 Independence Way, Princeton, NJ 08540 USA. RI Hayden, Stephen/F-4162-2011; Dai, Pengcheng /C-9171-2012 OI Hayden, Stephen/0000-0002-3209-027X; Dai, Pengcheng /0000-0002-6088-3170 NR 9 TC 11 Z9 11 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 519 EP 522 DI 10.1002/(SICI)1521-3951(199909)215:1<519::AID-PSSB519>3.0.CO;2-8 PG 4 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800085 ER PT J AU Shen, ZX Sawatzky, GA AF Shen, ZX Sawatzky, GA TI Novel electronic structure of cuprate superconductors revealed by the anomalous spectral lineshape in ARPES experiments SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID T-C SUPERCONDUCTORS; HIGH-TEMPERATURE SUPERCONDUCTORS; NORMAL-STATE; MODEL AB The fundamental questions raised by the anomalous spectral function seen in angle-resolved photoemission experiments (ARPES) have fascinated the community for ten years. The renormalization of energy scale from 8t (3 eV) to 2-3J (0.3 eV) appears to be understandable using the t-J model and its extensions and this success underscores the importance of the strong magnetic interaction and provides the basic Hamiltonian that can appropriately account for the local interactions. However, the path from the J scale local physics to the T-c (10 to 20 meV) scale long-range physics of superconductivity remains unclear. A revisit of the progress of the last decade and the unusual spectral lineshape that defy the understanding thus far suggest that the superconducting transition is not merely the opening of a gap due to an effective attractive interaction between well defined quasiparticles in the normal state but that these quasiparticles themselves are only formed upon lowering the temperature below T-c. C1 Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Univ Groningen, Ctr Mat Sci, Dept Solid State & Appl Phys, NL-9747 AG Groningen, Netherlands. RP Shen, ZX (reprint author), Stanford Univ, Dept Phys, Stanford, CA 94305 USA. RI Sawatzky, George/D-2997-2012 NR 24 TC 8 Z9 8 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 523 EP 529 DI 10.1002/(SICI)1521-3951(199909)215:1<523::AID-PSSB523>3.0.CO;2-S PG 7 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800086 ER PT J AU Tallon, JL Loram, JW Williams, GVM Cooper, JR Fisher, IR Johnson, JD Staines, MP Bernhard, C AF Tallon, JL Loram, JW Williams, GVM Cooper, JR Fisher, IR Johnson, JD Staines, MP Bernhard, C TI Critical doping in overdoped high-T-c superconductors: a quantum critical point? SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID D-WAVE SUPERCONDUCTIVITY; ELECTRONIC SPECIFIC-HEAT; NORMAL-STATE PSEUDOGAP; IMPURITY SCATTERING; LA2-XSRXCUO4; RESISTIVITY; YBA2CU3O7-DELTA; ANISOTROPY; CRYSTALS; OXIDES AB Evidence is presented from the scaling of the Knight shift, entropy and transport properties together with the sharp peaking of condensation energy, critical currents, superfluid density and a variety of other physical properties for the occurrence of a common critical doping point in lightly overdoped high-T-c, superconductors (HTS). This critical doping lies at the point where the doping-dependent normal-state pseudogap energy, E-g resemblance to a quantum critical point (QCP). A QCP scenario could lead directly to an explanation of the non-Fermi liquid behaviour of the normal-state metallic phase and the overall generic behaviour of the HTSC. C1 Ind Res Ltd, Lower Hutt, New Zealand. Univ Cambridge, Irc Superconduct, Cambridge CB3 0HE, England. Iowa State Univ, Dept Phys & Astron, Ames Lab, Ames, IA 50011 USA. Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany. RP Tallon, JL (reprint author), Ind Res Ltd, POB 31310, Lower Hutt, New Zealand. OI Staines, Mike/0000-0002-4529-0596; williams, grant/0000-0001-9853-5203 NR 28 TC 113 Z9 115 U1 0 U2 13 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 531 EP 540 DI 10.1002/(SICI)1521-3951(199909)215:1<531::AID-PSSB531>3.3.CO;2-N PG 10 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800087 ER PT J AU Gibbs, D Hill, JP Vettier, C AF Gibbs, D Hill, JP Vettier, C TI Recent advances in X-ray magnetic scattering SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID RESONANCE EXCHANGE SCATTERING; STRIPE ORDER; K-EDGE; DIFFRACTION; SURFACE; CHARGE; POLARIZATION; MOMENT; NIO AB We briefly review some recent advances in the use of X-ray scattering techniques to study magnetism, concentrating, in particular, on surface magnetism and on transition metal compounds. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. European Synchrotron Radiat Facil, F-38043 Grenoble, France. RP Gibbs, D (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RI Hill, John/F-6549-2011 NR 47 TC 9 Z9 9 U1 1 U2 5 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 667 EP 678 DI 10.1002/(SICI)1521-3951(199909)215:1<667::AID-PSSB667>3.0.CO;2-T PG 12 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800109 ER PT J AU Beck, U Chang, CH Metzger, TH Griffin, PB Patel, JR AF Beck, U Chang, CH Metzger, TH Griffin, PB Patel, JR TI Diffuse X-ray streaks from defects and surface features in boron implanted silicon SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT International Conference on Solid State Spectroscopy - (ICSSS) CY SEP 05-07, 1999 CL SCHWABISCH-GMUND, GERMANY SP Max Planck Gesellschaft, Munchen, Max Planck Inst Festkorper Forschung, Stuttgart ID POINT-DEFECTS AB In a grazing incidence X-ray diffuse scattering investigation of boron implanted silicon we have discovered narrow intensity rods along [111] directions. From a detailed analysis of three dimensional reciprocal space maps clear evidence is found that the rod-like scattering is due to extrinsic stacking faults with an average diameter of 71 nm, formed in the implanted layer after rapid thermal annealing. At the same time nanometer sized structures appear at the Si surface which are characterized by atomic force microscopy and specular reflectivity measurements. C1 Stanford Univ, Stanford Linear Accelerator Ctr, SSRL, Stanford, CA 94309 USA. Univ Munich, Sekt Phys, D-80539 Munich, Germany. Univ Munich, CENS, D-80539 Munich, Germany. LBL, ALS, Berkeley, CA 94720 USA. Stanford Univ, Integrated Circuit Lab, Stanford, CA 94305 USA. RP Patel, JR (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, SSRL, Stanford, CA 94309 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD SEP PY 1999 VL 215 IS 1 BP 779 EP 783 DI 10.1002/(SICI)1521-3951(199909)215:1<779::AID-PSSB779>3.0.CO;2-D PG 5 WC Physics, Condensed Matter SC Physics GA 234ME UT WOS:000082487800124 ER PT J AU Sornborger, AT Stewart, ED AF Sornborger, AT Stewart, ED TI Higher-order methods for simulations on quantum computers SO PHYSICAL REVIEW A LA English DT Article ID MANY-BODY THEORIES; MECHANICS; PHYSICS; SYSTEMS AB To implement many-qubit gates for use in quantum simulations on quantum computers efficiently, we develop and present methods reexpressing exp[-i(H-1+H-2+...)Delta t] as a product of factors exp[-iH(1)Delta t], exp[-iH(2)Delta t],..., which is accurate to third or fourth order in Delta t. The methods we derive are an extended form of the symplectic method, and can also be used for an integration of classical Hamiltonians on classical computers. We derive both integral and irrational methods, and find the most efficient methods in both cases. [S1050-2947(99)07209-1]. C1 Fermi Natl Accelerator Lab, Fermilab Astrophys Grp, NASA, Batavia, IL 60510 USA. RP Sornborger, AT (reprint author), Fermi Natl Accelerator Lab, Fermilab Astrophys Grp, NASA, Box 500, Batavia, IL 60510 USA. RI Stewart, Ewan/C-1565-2011 NR 20 TC 36 Z9 36 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 1956 EP 1965 DI 10.1103/PhysRevA.60.1956 PG 10 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900033 ER PT J AU Jacobs, VL Filuk, AB AF Jacobs, VL Filuk, AB TI Angular distribution and polarization of atomic radiative emission in electric and magnetic fields SO PHYSICAL REVIEW A LA English DT Article ID ENHANCED DIELECTRONIC RECOMBINATION; RAY-LINE EMISSION; CIRCULAR-POLARIZATION; TOKAMAK PLASMAS; DENSITY-MATRIX; ION DIODE; TRANSITIONS; EXCITATION; STATES; BEAM AB A density-matrix approach has been developed for the angular distribution and polarization of radiative emission during single-photon atomic transitions for a general set of steady-state excitation processes in an arbitrary arrangement of static (or quasistatic) electric and magnetic fields. Particular attention has been directed at spectroscopic observations in the intense fields of the high-power ion diodes: on the Particle Beam Fusion Accelerator II. (PBFA II) and SABRE devices at Sandia National Laboratories and at magnetic-field measurements in tokamak plasmas. The field-dependent atomic eigenstates are represented as expansions in a complete basis set of field-free bound and continuum eigenstates. Particular emphasis has been given to directed-electron collisional excitations, which may be produced by an anisotropic incident-electron velocity distribution. We have allowed for the possibility of the coherent excitation of the nearly degenerate field-dependent atomic substates, which can give rise to a complex spectral pattern of overlapping Stark-Zeeman components. Coherent excitations may be produced by a beam of electrons that are spin-polarized at an angle with respect to the propagation direction or by nonparallel electric and magnetic fields. Our main result is a general expression for the matrix elements of the photon-polarization density operator representing the total intensity, angular distribution, and polarization of the atomic radiative emission. For the observation of radiative emission in the direction of the magnetic field, the detection of linearly polarized emission, in addition to the usual circularly polarized radiation, can reveal the presence of a perpendicular electric field or a coherent excitation mechanism. [S1050-2947(99)07108-5]. C1 USN, Res Lab, Div Mat Sci & Technol, Ctr Computat Mat Sci, Washington, DC 20375 USA. Univ Maryland, Inst Plasma Res, College Pk, MD 20742 USA. Sandia Natl Labs, Ion Beam Generat Dept, Albuquerque, NM 87185 USA. RP Jacobs, VL (reprint author), USN, Res Lab, Div Mat Sci & Technol, Ctr Computat Mat Sci, Code 6390-2, Washington, DC 20375 USA. NR 63 TC 8 Z9 8 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 1975 EP 1987 DI 10.1103/PhysRevA.60.1975 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900035 ER PT J AU Trabert, E Beiersdorfer, P Brown, GV Smith, AJ Utter, SB Gu, MF Savin, DW AF Trabert, E Beiersdorfer, P Brown, GV Smith, AJ Utter, SB Gu, MF Savin, DW TI Improved electron-beam ion-trap lifetime measurement of the Ne8+ 1s2s S-3(1) level SO PHYSICAL REVIEW A LA English DT Article ID PRECISION-MEASUREMENT; RADIATIVE LIFETIME; TRANSITION; ENERGY; STATE AB An earlier electron-beam ion-trap (EBIT) lifetime measurement of the Ne8+ 1s2s S-3(1) level has been improved upon, reducing the uncertainties to less than the scatter in the existing theoretical calculations. The new result, 91.7+/-0.4 mu s, agrees with the previous value, but is more precise by a factor of 4. The new value distinguishes among theoretical values, as agreement is obtained only with those calculations that employ ''exact'' nonrelativistic or relativistic wave functions. Routes to measurements with even higher accuracy are discussed. [S1050-2947(99)06009-6]. C1 Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, Livermore, CA 94551 USA. Columbia Univ, Dept Phys, New York, NY 10027 USA. Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. Ruhr Univ Bochum, D-44780 Bochum, Germany. Morehouse Coll, Dept Phys, Atlanta, GA 30314 USA. RP Trabert, E (reprint author), Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, Livermore, CA 94551 USA. RI Savin, Daniel/B-9576-2012 OI Savin, Daniel/0000-0002-1111-6610 NR 20 TC 36 Z9 36 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 2034 EP 2038 DI 10.1103/PhysRevA.60.2034 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900041 ER PT J AU Krstic, PS Schultz, DR AF Krstic, PS Schultz, DR TI Consistent definitions for, and relationships among, cross sections for elastic scattering of hydrogen ions, atoms, and molecules SO PHYSICAL REVIEW A LA English DT Article ID NEUTRAL ATOMS; COLLISIONS; H+; DIVERTOR; MOMENTUM; PLASMAS AB Owing to the crucial role played by elastic scattering in various gas/plasma environments and to its fundamental nature, we consider in the present work low-energy collisions among isotopic variants of H+ + H, H + H, and H+ + H-2. In particular, we present consistent definitions of the elastic-scattering cross section and its common transport relevant moments regarding the quantum indistinguishability or classical distinguishability of particles, correcting some inappropriate definitions found in the literature. Further, we utilize a large collection of fully quantal calculated results for these systems to display the scaling relationships that exist among them. [S1050-2947(99)01309-8]. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Krstic, PS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 44 TC 42 Z9 42 U1 0 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 2118 EP 2130 DI 10.1103/PhysRevA.60.2118 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900050 ER PT J AU Rescigno, TN Byrum, DA Isaacs, WA McCurdy, CW AF Rescigno, TN Byrum, DA Isaacs, WA McCurdy, CW TI Theoretical studies of low-energy electron-CO2 scattering: Total, elastic, and differential cross sections SO PHYSICAL REVIEW A LA English DT Article ID ACCURATE ABINITIO TREATMENT; VIBRATIONAL-EXCITATION; MOLECULE COLLISIONS; CO2 AB We report the results of a theoretical study of electron scattering by CO2 at incident electron energies ranging from 0.25 to 10 eV using the complex Kohn variational method. These are the first fully ab initio calculations to accurately reproduce the two dominant features observed in experiment, namely, the dramatic rise in the integral cross sections below 2.0 eV and the resonance enhancement near 3.8 eV. Both of these effects are sensitive to the inclusion of electronic correlation effects involving long-range target polarization and short-range distortion. We have also carried out a preliminary study of effects of target vibrational motion in (IIu)-I-2 symmetry with an adiabatic nuclei treatment of the symmetric stretch mode. We find that this has a substantial effect on the width of the 3.8 eV resonance feature and gives results for both the integral elastic and total cross sections in excellent agreement with experiment. Our calculated differential elastic cross sections are also in good accord with recent experimental results. [S1050-2947 (99)09409-3]. C1 Univ Calif Lawrence Livermore Natl Lab, Phys & Space Technol Directorate, Livermore, CA 94551 USA. Univ Calif Davis, Dept Appl Sci, Livermore, CA 94551 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Comp Sci Directorate, Berkeley, CA 94720 USA. RP Rescigno, TN (reprint author), Univ Calif Lawrence Livermore Natl Lab, Phys & Space Technol Directorate, Livermore, CA 94551 USA. NR 24 TC 49 Z9 49 U1 0 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 2186 EP 2193 DI 10.1103/PhysRevA.60.2186 PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900058 ER PT J AU Stapp, HP AF Stapp, HP TI Comment on "Nonlocality, counterfactuals, and quantum mechanics" SO PHYSICAL REVIEW A LA English DT Letter AB A recent proof [H. P. Stapp, Am. J. Phys. 65, 300 (1997)], formulated in the symbolic language of modal logic, claims to show that contemporary quantum theory, viewed as a set of rules that allow us to calculate statistical predictions among certain kinds of observations, cannot be imbedded in any rational framework that conforms to the principles that (1) the experimenters' choices of which experiments they will perform can be considered to be free choices, (2) outcomes of measurements are unique, and (3) the free choices just mentioned have no backward-in-time effects of any kind. This claim is similar to Bell's theorem, but much stronger, because no reality assumption alien to quantum philosophy is used. The paper being commented on [W. Unruh, Phys. Rev. A 59, 126 (1999)] argues that some such reality assumption has been "smuggled" in. That argument is examined here and shown, I believe, to be defective. [S1050-2947(99)05308-1]. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Stapp, HP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 7 TC 4 Z9 4 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP 2595 EP 2598 DI 10.1103/PhysRevA.60.2595 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900110 ER PT J AU Whitfield, SB Hallman, S Krause, MO Caldwell, CD Cowan, RD AF Whitfield, SB Hallman, S Krause, MO Caldwell, CD Cowan, RD TI Determination of the fine-structure properties of the 2p subshell of atomic chlorine SO PHYSICAL REVIEW A LA English DT Article ID RESOLVED PHOTOELECTRON SPECTROMETRY; SYNCHROTRON RADIATION; PHOTOIONIZATION; SPECTROSCOPY; RESONANCES; RESOLUTION; FLUORINE; BROMINE; REGION; STATES AB A measurement of the fine-structure properties of the atomic chlorine 2p subshell has been carried out using electron spectrometry in conjunction with synchrotron radiation. We observe eight of the ten photopeaks predicted for this open-shell atom. Binding energies, relative intensities, and angular distribution parameters are reported for an incident photon energy of 245 eV. Experimental binding energies and intensities are in reasonable agreement with our calculations using a Slater-Condon superposition-of-configuration method. [S1050-2947(99)50309-0]. C1 Univ Wisconsin, Dept Phys & Astron, Eau Claire, WI 54702 USA. Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA. Natl Sci Fdn, Arlington, VA 22230 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Whitfield, SB (reprint author), Univ Wisconsin, Dept Phys & Astron, Eau Claire, WI 54702 USA. NR 25 TC 6 Z9 6 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1999 VL 60 IS 3 BP R1747 EP R1750 DI 10.1103/PhysRevA.60.R1747 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 235YF UT WOS:000082570900004 ER PT J AU Argyriou, DN Bordallo, HN Mitchell, JF Jorgensen, JD Strouse, GF AF Argyriou, DN Bordallo, HN Mitchell, JF Jorgensen, JD Strouse, GF TI Lattice displacements above T-C in the layered manganite La1.2Sr1.8Mn2O7 SO PHYSICAL REVIEW B LA English DT Article ID MAGNETORESISTANCE; LA1-XCAXMNO3; INSTABILITY; DISTORTIONS; BAZNF4 AB Neutron-diffraction data presented in this paper demonstrate the relevance of lattice displacement above Tc, in our understanding of the evolution of the crystal structure with temperature in the layered colossal magnetoresistance manganite La1.2Sr1.8Mn2Mn2O7. The anomalous temperature behavior of thermal diffuse scattering in (La1.2Sr1.8MnO7)-O-2 strongly suggests that it arises from lattice displacements and correlates directly with anomalies in the displacement parameters of the O and Mn atoms and the Mn-O bond lengths. From our measurements, the insulator-metal transition can be described as a transition from a high-temperature state with disordered Mn-O bond lengths to a low-temperature stare with a more uniform distribution on Mn-O bonds. These observations are in agreement with polaronic charge transport above T-C in the perovskite manganites; as electron hopping is responsible for bond disorder above T-C, below the transition where e(g) carriers are delocalized, any lattice displacements are uniformly averaged. [S0163-1829(99)04429-X]. C1 Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA. Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA. Univ Calif Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Strouse, GF (reprint author), Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA. EM strouse@ultra.chem.ucsb.edu RI Bordallo, Heloisa/I-6836-2012 OI Bordallo, Heloisa/0000-0003-0750-0553 NR 20 TC 22 Z9 22 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6200 EP 6203 DI 10.1103/PhysRevB.60.6200 PG 4 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400009 ER PT J AU Dimitrov, DA Louca, D Roder, H AF Dimitrov, DA Louca, D Roder, H TI Phonons from neutron powder diffraction SO PHYSICAL REVIEW B LA English DT Article ID LATTICE-DYNAMICS; CALCIUM-FLUORIDE; SCATTERING AB The spherically averaged structure function S(\q\)obtained from pulsed neutron powder diffraction contains both elastic and inelastic scattering via an integral over energy. The Fourier transformation of S(\q\) to real space, as is done in the pair density function (PDF) analysis, regularizes the data, i.e., it accentuates the diffuse scattering. We present a technique which enables the extraction of off-center (\q\not equal 0) phonon information from powder diffraction experiments by comparing the experimental PDF with theoretical calculations based on standard interatomic potentials and the crystal symmetry. This procedure [dynamics from powder diffraction] has been successfully implemented as demonstrated here for two systems, a simple metal fee Ni and an ionic crystal CaF2. Although computationally intensive, this data analysis allows for a phonon based modeling of the PDF, and additionally provides off-center phonon information from neutron powder diffraction, [S0163-1829(99)05733-1]. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Dimitrov, DA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 21 TC 24 Z9 24 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6204 EP 6207 DI 10.1103/PhysRevB.60.6204 PG 4 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400010 ER PT J AU Song, C Islam, Z Lottermoser, L Goldman, AI Canfield, PC Detlefs, C AF Song, C Islam, Z Lottermoser, L Goldman, AI Canfield, PC Detlefs, C TI Magnetostriction-induced tetragonal-to-orthorhombic phase transition in TbNi2B2C SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-SCATTERING; MAGNETIC-STRUCTURE; SUPERCONDUCTING LUNI2B2C; CRYSTAL-STRUCTURE; BORIDE CARBIDE; ERNI2B2C; STATE; HONI2B2C; ORDER; MAGNETORESISTANCE AB A magnetostriction-induced structural phase transition in a single crystal of TbNi2B2C has been studied by high resolution x-ray diffraction. On cooling, we have observed a tetragonal-to-orthorhombic distortion below the Neel temperature, 14.3 K, similar to what has been seen in ErNi2B2C. The mismatch between the a and b lattice parameters increases continuously with decreasing temperature up to a value of a/b - 1 approximate to 0.55% at the lowest temperature measured, T = 8.6 K. [S0163-1829(99)08433-7]. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. European Synchrotron Radiat Facil, F-38043 Grenoble, France. RP Song, C (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RI Detlefs, Carsten/B-6244-2008; Canfield, Paul/H-2698-2014 OI Detlefs, Carsten/0000-0003-2573-2286; NR 29 TC 24 Z9 24 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6223 EP 6225 DI 10.1103/PhysRevB.60.6223 PG 3 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400015 ER PT J AU Gordon, JE Bader, SD Mitchell, JF Osborn, R Rosenkranz, S AF Gordon, JE Bader, SD Mitchell, JF Osborn, R Rosenkranz, S TI Specific heat of La1.2Sr1.8Mn2O7 SO PHYSICAL REVIEW B LA English DT Article ID LAYERED LA1.2SR1.8MN2O7; T-C; CHARGE AB The specific heat of a single crystal of the layered perovskite La1.2Sr1.8Mn2O7 has been measured for 83 BR; OSCILLATIONS; CONDUCTOR; BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE; BEHAVIOR AB We report direct observations of anomalous magnetic-field and temperature dependences of the Shubnikov-de Haas oscillations in the organic superconductor beta "-(BEDT-TTF)(2)SF5CH2CF2SO3. Unlike other BEDT-TTF based organic superconductors, a nonmetallic temperature dependence of the background magnetoresistance is clearly observed. It is speculated that the nonmetallic behavior may arise from a partial nesting of the open orbits, similar to the field-induced density wave in the quasi-one-dimensional systems or a charge localization. The analysis of the magnetoresistance oscillations are found to deviate from the conventional Lifshitz-Kosevich description at high field and low temperatures. [S0163-1829(99)05433-8]. C1 Univ Miami, Dept Phys, Coral Gables, FL 33124 USA. Natl High Magnet Field Lab, Tallahassee, FL 32306 USA. Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany. Argonne Natl Lab, Div Chem & Mat Sci, Argonne, IL 60439 USA. Portland State Univ, Dept Chem, Portland, OR 97207 USA. RP Zuo, F (reprint author), Univ Miami, Dept Phys, Coral Gables, FL 33124 USA. NR 22 TC 23 Z9 24 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6296 EP 6299 DI 10.1103/PhysRevB.60.6296 PG 4 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400034 ER PT J AU Benedek, R Thackeray, MM Yang, LH AF Benedek, R Thackeray, MM Yang, LH TI Atomic structure and electrochemical potential of Li1+xV3O8 SO PHYSICAL REVIEW B LA English DT Article ID FIRST-PRINCIPLES; AB-INITIO; LITHIUM INTERCALATION; ELECTRONIC-STRUCTURE; BATTERIES; TRANSITION; INSERTION; LIXCOO2; MANGANESE; BEHAVIOR AB The atomic configurations and total energies of both monoclinic phases of Li1+xV3O8, a candidate electrode material in rechargeable Li batteries, are calculated as a function of x within local-density-functional theory, using the plane-wave pseudopotential method. The predicted structures at the most standard compositions, 1 + x = 1.2 and 1 + x = 4, agree closely with x-ray-diffraction measurements of atomic structure. As Li is inserted into the low-Li compound, Li(2) is half filled and then S-t(3) is half filled, where the Li sites are labeled as in de Picciotto et nl. This is followed by the onset of a two-phase region. Calculations of the electrochemical potential as a function of lithiation are in excellent overall agreement with experiment. [S0163-1829(99)00330-6]. C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Univ Calif Lawrence Livermore Natl Lab, Dept Condensed Matter Phys, Livermore, CA 94551 USA. RP Benedek, R (reprint author), Argonne Natl Lab, Div Chem Technol, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 39 TC 24 Z9 24 U1 0 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6335 EP 6342 DI 10.1103/PhysRevB.60.6335 PG 8 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400043 ER PT J AU Grossman, JC Mizel, A Cote, M Cohen, ML Louie, SG AF Grossman, JC Mizel, A Cote, M Cohen, ML Louie, SG TI Transition metals and their carbides and nitrides: Trends in electronic and structural properties SO PHYSICAL REVIEW B LA English DT Article ID NACL-TYPE STRUCTURE; COHESIVE PROPERTIES; BULK MODULI; SOLIDS; ENERGY; GAS AB A study of the structural and electronic properties of selected transition metals and their carbides and nitrides is presented. We focus on assessing trends of possible importance for understanding their hardness. Lattice constants, bulk moduli (B-o), and charge densities are calculated using the local density approximation with a pseudopotential plane wave approach. An fee lattice is employed for the transition metal elements in order to make comparisons and study trends relateable to their carbides and nitrides. Our results show that both increasing the number of valence d electrons and the presence off electrons in the core lead to larger (B-o). Charge density plots and histograms enable us to explain the nature of the charge distribution in the interstitial region for the different compounds considered. In addition, we include the heavier elements seaborgium, bohrium, and hasnium in order to test further trends. Surprisingly, the calculated B-o for Hs is comparable to that of diamond. [S0163-1829(99)03630-9]. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Cote, Michel/H-3942-2012 OI Cote, Michel/0000-0001-9046-9491 NR 22 TC 190 Z9 197 U1 5 U2 45 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6343 EP 6347 DI 10.1103/PhysRevB.60.6343 PG 5 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400044 ER PT J AU FitzGerald, SA Yildirim, T Santodonato, LJ Neumann, DA Copley, JRD Rush, JJ Trouw, F AF FitzGerald, SA Yildirim, T Santodonato, LJ Neumann, DA Copley, JRD Rush, JJ Trouw, F TI Quantum dynamics of interstitial H-2 in solid C-60 SO PHYSICAL REVIEW B LA English DT Article ID INTERCALATION; CO; NE AB We present a neutron-scattering study of the quantum dynamics of molecular hydrogen trapped inside solid C-60 The loading isotherm is shown to deviate significantly from a standard Langmuir response and follows instead an exponential form, increasing from 40% filling at 130 atm to 90% at 700 atm. Diffraction data confirm that the adsorbed molecules are randomly oriented and sit exclusively at the octahedral site. Inelastic neutron scattering clearly shows the ortho to para conversion of the interstitial hydrogen, which occurs via a transition from the J = 1 to J = 0 rotational levels. The level scheme shows relatively minor deviations (on the order of a few percent) from the free rotor model with the splitting in the excited level being the same, 0.7 meV, for both H-2 and D-2. In contrast the shift in the overall level, which is shown to depend critically upon zero-point motion is almost three times greater for H-2 than D-2. We also identify the translational modes of the trapped molecules which occur at a much higher energy than would be classically predicted and have an isotopic shift on the order of root 2.2. Quantum-mechanical model calculations within the self-consistent harmonic approximation indicate that zero-point motion of H-2 molecules in the ground state play the central role in understanding the experimental results, and in particular the high energy of the translational modes and the magnitude of their isotopic shift. [S0163-1829(99)03133-1]. C1 Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. Oberlin Coll, Dept Phys, Oberlin, OH 44074 USA. Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP FitzGerald, SA (reprint author), Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RI yildirim, taner/A-1290-2009; OI Santodonato, Louis/0000-0002-4600-685X NR 18 TC 70 Z9 71 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6439 EP 6451 DI 10.1103/PhysRevB.60.6439 PG 13 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400056 ER PT J AU Sandvik, AW Hamer, CJ AF Sandvik, AW Hamer, CJ TI Ground-state parameters, finite-size sealing, and low-temperature properties of the two-dimensional S=1/2 XY model SO PHYSICAL REVIEW B LA English DT Article ID QUANTUM HEISENBERG-ANTIFERROMAGNET; MONTE-CARLO SIMULATION; LONG-RANGE ORDER; 2 DIMENSIONS; SQUARE LATTICE; BEHAVIOR; SYSTEMS AB We present high-precision quantum Monte Carlo results for the S=1/2 XY model on a two-dimensional square lattice, in the ground stare as well as at finite temperature. The energy, the spin stiffness, the magnetization, and the susceptibility are calculated and extrapolated to the thermodynamic limit. For the ground state, we test a variety of finite-size scaling predictions of effective Lagrangian theory and find good agreement and consistency between the finite-size corrections for different quantities. The low-temperature behavior of the susceptibility and the internal energy is also in good agreement with theoretical predictions. [S0163-1829(99)06733-8]. C1 Univ Illinois, Dept Phys, Urbana, IL 61801 USA. Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia. RP Sandvik, AW (reprint author), Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA. OI Sandvik, Anders/0000-0002-5638-4619 NR 30 TC 48 Z9 48 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6588 EP 6593 DI 10.1103/PhysRevB.60.6588 PG 6 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400076 ER PT J AU Tsukada, I Sasago, Y Uchinokura, K Zheludev, A Maslov, S Shirane, G Kakurai, K Ressouche, E AF Tsukada, I Sasago, Y Uchinokura, K Zheludev, A Maslov, S Shirane, G Kakurai, K Ressouche, E TI BaCu2Si2O7: A quasi-one-dimensional S=1/2 antiferromagnetic chain system SO PHYSICAL REVIEW B LA English DT Article ID SINGLET GROUND-STATE; MAGNETIC-SUSCEPTIBILITY; SPIN DYNAMICS; LINEAR-CHAIN; EXCITATIONS; TEMPERATURE; SR2CUO3; CUGEO3; KCUF3; GAP AB The antiferromagnetic (AF) compound BaCu2Si2O7 is studied by magnetic susceptibility and neutron-scattering techniques. The observed behavior is dominated by the presence of loosely coupled S=1/2 chains with the intrachain AF exchange constant J(parallel to)approximate to 24.1 meV. Long-range Neel ordering is observed below T-N=9.2 K. The results are discussed within the framework of the mean-field RPA model for weakly interacting quantum spin chains. [S0163-1829(99)03433-5]. C1 Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Tokyo, Neutron Scattering Lab, Inst Solid State Phys, Tokai, Ibaraki 3191106, Japan. CEN, MDN, SPSM, DRFMC, F-38054 Grenoble, France. RP Tsukada, I (reprint author), Univ Tokyo, Dept Appl Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan. RI Maslov, Sergei/C-2397-2009 OI Maslov, Sergei/0000-0002-3701-492X NR 23 TC 62 Z9 62 U1 2 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6601 EP 6607 DI 10.1103/PhysRevB.60.6601 PG 7 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400078 ER PT J AU Kerchner, HR Norton, DP Goyal, A Budai, JD Christen, DK Kroeger, DM Paranthaman, M Lee, DF List, FA Feenstra, R Brandt, EH AF Kerchner, HR Norton, DP Goyal, A Budai, JD Christen, DK Kroeger, DM Paranthaman, M Lee, DF List, FA Feenstra, R Brandt, EH TI Alternating transport-current flow in superconductive films: The role of a geometrical barrier to vortex motion SO PHYSICAL REVIEW B LA English DT Article ID YBA2CU3O7-DELTA GRAIN-BOUNDARIES; CRITICAL-CURRENT DENSITY; SURFACE BARRIERS; TAPES; BI2SR2CACU2O8; LOSSES; FIELD AB YBa2Cu3O7-delta films grown on both SrTiO3 single-crystal and rolling-assisted biaxially textured (Ni) substrates (RABiTS) carry high critical current densities J(c). A geometrical barrier to vortex motion raises the apparent J(c), but also increases power loss associated with ac transport current through such tape above that expected from Norris's 1970 theory of hysteretic energy loss. Present theoretical estimates of the geometrical barrier have insufficient magnitude to account for our observations at low nc current levels. Evidence is reported that the ferromagnetic Ni substrate makes no significant contribution to the tape self-field loss. Loss is enhanced, and J(c) modestly reduced by the presence of low-angle grain boundaries. Application of de magnetic field further lowers J(c) and raises loss in films. [S0163-1829(99)01833-0]. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Max Planck Inst Met Forsch, D-70506 Stuttgart, Germany. RP Kerchner, HR (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Paranthaman, Mariappan/N-3866-2015; Budai, John/R-9276-2016 OI Paranthaman, Mariappan/0000-0003-3009-8531; Budai, John/0000-0002-7444-1306 NR 37 TC 14 Z9 14 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6878 EP 6883 DI 10.1103/PhysRevB.60.6878 PG 6 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400110 ER PT J AU Nandor, VA Martindale, JA Groves, RW Vyaselev, OM Pennington, CH Hults, L Smith, JL AF Nandor, VA Martindale, JA Groves, RW Vyaselev, OM Pennington, CH Hults, L Smith, JL TI High-temperature O-17 and Y-89 NMR of YBa2CU3O7-delta SO PHYSICAL REVIEW B LA English DT Article ID LATTICE RELAXATION-RATE; NORMAL-STATE; CUPRATE SUPERCONDUCTORS; SPIN SUSCEPTIBILITY; PLANAR OXYGEN; NUCLEAR; YBA2CU3O6+X; YBA2CU4O8; MODEL; ANISOTROPY AB We report measurements of O-17 and Y-89 NMR Knight shift and (T1T)(-1) for temperatures ranging from T-c up to 700 K. The contrasting behaviors of O-17, Y-89, and Cu-63 are compared with theoretical predictions based on the "single component" description of electronic structure. We find that while the O-17 behavior is as predicted, the Y-89 is quite surprising, displaying (89)(T1T)(-1)=constant behavior (within experimental precision of +/-4%) over the full range, despite a 13+/-2% drop (from 300 to 700 K) in the static susceptibility and a 14+/-2% drop in (17)(T1T)(-1). [S0163-1829(99)00733-X]. C1 Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia. RP Nandor, VA (reprint author), Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA. NR 32 TC 14 Z9 14 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 9 BP 6907 EP 6915 DI 10.1103/PhysRevB.60.6907 PG 9 WC Physics, Condensed Matter SC Physics GA 235YA UT WOS:000082570400115 ER PT J AU Dabrowski, B Xiong, X Bukowski, Z Dybzinski, R Klamut, PW Siewenie, JE Chmaissem, O Shaffer, J Kimball, CW Jorgensen, JD Short, S AF Dabrowski, B Xiong, X Bukowski, Z Dybzinski, R Klamut, PW Siewenie, JE Chmaissem, O Shaffer, J Kimball, CW Jorgensen, JD Short, S TI Structure-properties phase diagram for La1-xSrxMnO3 (0.1 <= x <= 0.2) SO PHYSICAL REVIEW B LA English DT Article ID NEUTRON-DIFFRACTION; DEFECT CHEMISTRY; COLOSSAL-MAGNETORESISTANCE; TRANSPORT-PROPERTIES; MAGNETIC-FIELD; TRANSITION; LAMNO3+/-DELTA; LAMNO3+DELTA; MANGANITES; BEHAVIOR AB By combining the results of magnetization, resistivity, and neutron powder-diffraction data for stoichiometric La1-xSrxMnO3, we have constructed a phase diagram that describes the magnetic, transport, and structural properties and the relationships among them as a function of composition (0.1 less than or equal to x less than or equal to 0.2) and temperature (10 - 340 K). We show that, with increasing Sr content, the Curie temperature increases linearly, while the temperature of an orbital ordering transition to a state with a large coherent Jahn-Teller (JT) distortion decreases. These two phase-transition lines cross at x = 0.145 and T = 210 K. When the transition to the ferromagnetic state occurs in a phase that has a large coherent JT distortion (x < 0.145), a strong magnetolattice coupling is observed; the coherent JT distortion is dramatically reduced and the incoherent distortion is enhanced in the ferromagnetic phase. For x > 0.145, where the coherent JT distortion is small above Curie temperature, magnetolattice coupling reduces the incoherent distortion at T-C and strongly suppresses the transition to a phase with a large coherent JT distortion. These observations are consistent with a competition between ferromagnetism and JT distortion that is mediated by a colossal spin-charge-lattice coupling. A metallic state occurs below the Curie temperature when both coherent and incoherent JT distortions are suppressed. [S0163-1829(99)14933-6]. C1 No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Dabrowski, B (reprint author), No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. NR 40 TC 170 Z9 172 U1 2 U2 38 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7006 EP 7017 DI 10.1103/PhysRevB.60.7006 PG 12 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800018 ER PT J AU Brown, FC Heald, SM Jiang, D Brewe, DL Kim, KH Stern, EA AF Brown, FC Heald, SM Jiang, D Brewe, DL Kim, KH Stern, EA TI Spectral dependence of point defect production by x rays in RbBr SO PHYSICAL REVIEW B LA English DT Article ID AB-INITIO CALCULATION; F-CENTER PRODUCTION; ULTRAVIOLET-RADIATION; ALKALI-HALIDES; KBR; CRYSTALS; ABSORPTION; EXCITATION; EDGE AB F-center formation by monochromatic x rays has been studied above and below the bromine and rubidium K-absorption edges in crystals of RbBr. The x-ray beam from a double silicon crystal monochromator on an undulator at the Advanced Photon Source was used to produce these point defects, which were detected by a sensitive laser-induced luminescence method. Experiments were carried out over a wide range of monochromatic x-ray intensity, with emphasis on the nearly linear initial slope of defect formation with exposure. No significant increase in F-center formation efficiency was found upon crossing the bromine K edge, which indicates that additional Auger-cascade mechanisms do not appreciably add to the usual multiple ionization electron-hole recombination processes known to generate point defects. [S0163-1829(99)14733-7]. C1 Univ Washington, Dept Phys, Seattle, WA 98195 USA. Argonne Natl Lab, APS, Pacific NW Lab, Argonne, IL 60439 USA. Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. RP Brown, FC (reprint author), Univ Washington, Dept Phys, Box 351560, Seattle, WA 98195 USA. NR 24 TC 1 Z9 1 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7037 EP 7042 DI 10.1103/PhysRevB.60.7037 PG 6 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800021 ER PT J AU Shenderova, OA Brenner, DW Yang, LH AF Shenderova, OA Brenner, DW Yang, LH TI Atomistic simulations of structures and mechanical properties of polycrystalline diamond: Symmetrical < 001 > tilt grain boundaries SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; TIGHT-BINDING; SILICON; FILMS; GERMANIUM; MICROSCOPY; SI; DISLOCATIONS; ENERGIES; DEFECTS AB Atomic structures and energies of symmetrical [001] tilt grain boundaries (GB's) in diamond have been calculated over a wide range of misorientation angle using a many-body analytic potential, and for some selected short-period grain boundaries with tight-binding and first-principles density-functional methods. The grain boundary energies from the tight-binding and first-principles methods are about 75% of those calculated with the analytic bond-order potential. The energy rankings of the GB's calculated with the empirical potential, however, are similar to that calculated from the tight-binding and the density functional approaches. Atomic-level energy and stress distributions calculated with the bond-order potential reveal relations between local interface reconstruction and the extent and value of hydrostatic and shear stresses. From the calculated local volume strain and hydrostatic stress fields, the atomic bulk moduli are evaluated, and zones of different elastic behavior in the vicinity of the interface are defined. [S0163-1829(99)08733-0]. C1 N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA. Univ Calif Lawrence Livermore Natl Lab, Phys Div H, Livermore, CA 94551 USA. RP Shenderova, OA (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA. RI Brenner, Donald/D-1741-2009 NR 57 TC 33 Z9 33 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7043 EP 7052 DI 10.1103/PhysRevB.60.7043 PG 10 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800022 ER PT J AU Martin, JE Tigges, CP Anderson, RA Odinek, J AF Martin, JE Tigges, CP Anderson, RA Odinek, J TI Enhanced dielectric standoff and mechanical failure in field-structured composites SO PHYSICAL REVIEW B LA English DT Article ID SIMULATION AB We report dielectric breakdown experiments on electric-field-structured composites of high-dielectric-constant BaTiO3 particles in an epoxy resin. These experiments show a significant increase in the dielectric standoff strength perpendicular to the field structuring direction, relative to control samples consisting of randomly dispersed particles. To understand the relation of this observation to microstructure, we apply a simple resistor-short breakdown model to three-dimensional composite structures generated from a dynamical simulation. In this breakdown model the composite material is assumed to conduct primarily through particle contacts, so the simulated structures are mapped onto a resistor network where the center of mass of each particle is a node that is connected to neighboring nodes by resistors of fixed resistance that irreversibly short to perfect conductors when the current reaches a threshold value. This model gives relative breakdown voltages that are in good agreement with experimental results. Finally, we consider a primitive model of the mechanical strength of a field-structured composite material, which is a current-driven, conductor-insulator fuse model. This model leads to a macroscopic fusing behavior and can be related to mechanical failure of the composite. [S0163-1829(99)14433-3]. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Martin, JE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 8 TC 9 Z9 9 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7127 EP 7139 DI 10.1103/PhysRevB.60.7127 PG 13 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800030 ER PT J AU Sasik, R AF Sasik, R TI Replica theory of the random spherical interface SO PHYSICAL REVIEW B LA English DT Article ID FIELD ISING-MODEL; LOWER CRITICAL DIMENSION; SPIN-GLASS; RENORMALIZATION-GROUP; RANDOM-MEDIA; HELICITY MODULUS; RANDOM MANIFOLDS; DOMAIN-WALLS; IMPURITIES; SYSTEMS AB We investigate the thermodynamics of a spherical interface with quenched disorder in D spatial dimensions, using the variational replica approach of Mezard and Parisi. While the disorder-free system exhibits a continuous phase transition analogous to Bose condensation for D greater than or equal to 3, arbitrarily weak disorder removes this transition in three and four dimensions. For D less than or equal to 4 there is a critical value of the mean square wandering of the interface, below which there is no breaking of replica symmetry, and above which the replica symmetry is spontaneously broken at a finite temperature. Replica symmetry breaking is discontinuous, hut the one step solution is found to be unstable. We also calculate the helicity modulus of the interface and show that for any D it is equal to that of the pure system at the same temperature and chemical potential. [S0163-1829(99)11933-7]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Sasik, R (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. NR 37 TC 1 Z9 1 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7196 EP 7207 DI 10.1103/PhysRevB.60.7196 PG 12 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800037 ER PT J AU Pryadko, LP Kivelson, SA Emery, VJ Bazaliy, YB Demler, EA AF Pryadko, LP Kivelson, SA Emery, VJ Bazaliy, YB Demler, EA TI Topological doping and the stability of stripe phases SO PHYSICAL REVIEW B LA English DT Article ID T-J MODEL; X-RAY-DIFFRACTION; 3 SPACE-DIMENSIONS; DOMAIN-WALLS; SUPERCONDUCTING-TRANSITION; SOLITON SOLUTIONS; CHARGE STRIPES; MAGNETIC ORDER; SEPARATION; TEMPERATURE AB We analyze the properties of a general Ginzburg-Landau free energy with competing order parameters, long-range interactions, and global constraints (e.g;, a fixed value of a total ''charge'') to address the physics of stripe phases in underdoped high-T-c and related materials. For a local free energy limited to quadratic terms of the gradient expansion, only uniform or phase-separated configurations are thermodynamically stable. ''Stripe'' or other nonuniform phases can be stabilized by long-range forces, but can only have nontopological tin-phase) domain walls where the components of the antiferromagnetic order parameter never change sign, and the periods of charge and spin-density waves coincide. The antiphase domain walls observed experimentally require physics on an intermediate length scale, and they are absent from a model that involves only long-distance physics. Dense stripe phases can be stable even in the absence of long-range forces, but domain walls always attract at large distances; i.e., there is a ubiquitous tendency to phase separation at small doping. The implications for the phase diagram of underdoped cuprates are discussed. [S0163-1829(99)03734-0]. C1 Inst Adv Study, Princeton, NJ 08540 USA. Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA. RP Pryadko, LP (reprint author), Inst Adv Study, Olden Lane, Princeton, NJ 08540 USA. NR 85 TC 37 Z9 37 U1 2 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7541 EP 7557 DI 10.1103/PhysRevB.60.7541 PG 17 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800082 ER PT J AU Louca, D Kwei, GH Dabrowski, B Bukowski, Z AF Louca, D Kwei, GH Dabrowski, B Bukowski, Z TI Lattice effects observed by the isotope-difference pair density function of the (YBa2Cu3O6.92)-Cu-63/65 superconductor SO PHYSICAL REVIEW B LA English DT Article ID PULSED-NEUTRON-SCATTERING; LOCAL-STRUCTURE; SINGLE-CRYSTAL; TEMPERATURE; TRANSITION; YBA2CU3O7-DELTA; DISPLACEMENTS; DIFFRACTION; PHASE; TC AB The local lattice effects in the YBa2Cu3O6.92 superconductor were characterized by the neutron differential pair density function (DPDF) analysis. The DPDF provides an atom specific PDF, enabling the distinction between overlapping atom pair correlations in complicated systems. It utilizes the contrast in the scattering amplitude enhanced by the different neutron scattering lengths for Cu-63 and Cu-65 in two isotopically pure samples with identical compositions. Significant structural distortions are observed in the superconducting planes, in association with the plane copper (Cu2). A bifurcation of the Cu2 to apical oxygen (O4) pair correlations is evident which is temperature dependent. This effect originates from distortions along the c axis of the crystal of the Cu2 ions and not of the O4, as no distortions are observed in association with the connecting pair, the Cu1 (chain)-O4. Secondary lattice anharmonicities in the chains are also seen, arising mostly from defects in the vicinity of oxygen vacancies. [S0163-1829(99)12833-9]. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. RP Louca, D (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 32 TC 14 Z9 15 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7558 EP 7564 DI 10.1103/PhysRevB.60.7558 PG 7 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800083 ER PT J AU Norman, MR Ding, H Fretwell, H Randeria, M Campuzano, JC AF Norman, MR Ding, H Fretwell, H Randeria, M Campuzano, JC TI Extraction of the electron self-energy from angle-resolved photoemission data: Application to Bi2Sr2CaCu2O8+x SO PHYSICAL REVIEW B LA English DT Article ID T-C SUPERCONDUCTORS; NORMAL-STATE; FERMI-SURFACE; SPECTRAL-FUNCTION; GAP; PHENOMENOLOGY; SPECTROSCOPY; DISPERSION; PSEUDOGAP AB The self-energy Sigma(k, omega), the fundamental function that describes the effects of many-body interactions on an electron in a solid, is usually difficult to obtain directly from experimental data. In this paper we show that by making certain reasonable assumptions, the self-energy can be directly determined from angle-resolved photoemission data. We demonstrate this method on data for the high-temperature superconductor Bi2Sr2CaCu2O8+x in the normal, superconducting, and pseudogap phases. [S0163-1829(99)13433-7]. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. RP Norman, MR (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Norman, Michael/C-3644-2013; OI Ding, Hong/0000-0003-4422-9248 NR 26 TC 39 Z9 40 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7585 EP 7590 DI 10.1103/PhysRevB.60.7585 PG 6 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800088 ER PT J AU Park, JH AF Park, JH TI Reply to "Comment on 'Double-exchange ferromagnetism in La(Mn1-xCox)O-3'" SO PHYSICAL REVIEW B LA English DT Article AB In response to the comment by van Elp, the x-ray-absorption spectroscopy (XAS) result at Co L edge in LaMn1-xCoxO3 is examined. As reported previously [Park et al, Phys. Rev. B 55, 11072 (1997)] the valence state must be understood as Co2+, not the Co2+-Co3+ mixed valence. An early XAS study of the induced Co3+ state in Li-doped CoO [van Elp ef al., Phys. Rev. B 44, 6090 (1991)], which is deeply related to the comment, is also examined. It is found that the XAS results obviously represent the (1)A(1) low spin state for the Co3+ State as in LiCoO2, not the intermediate spin T-3(1) state claimed in the study. [S0163-1829(99)11633-3]. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Park, JH (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. NR 6 TC 4 Z9 4 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP 7651 EP 7653 DI 10.1103/PhysRevB.60.7651 PG 3 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800098 ER PT J AU Dodge, JS Kulatov, E Klein, L Ahn, CH Reiner, JW Mieville, L Geballe, TH Beasley, MR Kapitulnik, A Ohta, H Uspenskii, Y Halilov, S AF Dodge, JS Kulatov, E Klein, L Ahn, CH Reiner, JW Mieville, L Geballe, TH Beasley, MR Kapitulnik, A Ohta, H Uspenskii, Y Halilov, S TI Temperature-dependent local exchange splitting in SrRuO3 SO PHYSICAL REVIEW B LA English DT Article ID ITINERANT FERROMAGNET SRRUO3; MAGNETOOPTICAL PROPERTIES; ELECTRONIC-STRUCTURE; SPIN-WAVES; SR2RUO4; STATE; TC; NI AB Optical and magneto-optical data from the perovskite itinerant ferromagnet SrRuO3 are presented and compared to fully relativistic, local spin-density approximation band-structure calculations. We find that the basic features of the optical data are well described by the ferromagnetic band calculation. To test recent predictions that the ferromagnetic transition in SrRuO3 is driven by long-wavelength longitudinal spin fluctuations, we track the temperature dependence of the O(2p) --> Ru(4d) interband transition which we observe in the magneto-optic conductivity. The absence of significant changes in the energy of this transition suggests that the ferromagnetic order is destroyed largely through transverse, not longitudinal, fluctuations of the ferromagnetic moment. We discuss the implications of these observations for the electronic structure of the ruthenium perovskites. [S0163-1829(99)51134-X]. C1 Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Kobe Univ, Venture Business Lab, Kobe, Hyogo 657, Japan. Kobe Univ, Fac Sci, Dept Phys, Kobe, Hyogo 657, Japan. PN Lebedev Phys Inst, Tamm Theory Dept, Moscow 117924, Russia. Tech Univ Dresden, Max Planck Arbeitsgrp Elektronensyst, D-01062 Dresden, Germany. RP Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA. RI Klein, Lior/B-1061-2008; Uspenskii, Yurii/L-6205-2015; Kulatov, Erkin/M-4740-2015 OI Klein, Lior/0000-0002-1233-9453; NR 27 TC 23 Z9 23 U1 2 U2 17 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP R6987 EP R6990 DI 10.1103/PhysRevB.60.R6987 PG 4 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800013 ER PT J AU Grossman, JC Louie, SG Cohen, ML AF Grossman, JC Louie, SG Cohen, ML TI Solid C-36: Crystal structures, formation, and effects of doping SO PHYSICAL REVIEW B LA English DT Article ID C-60 DIMERS AB We employ plane-wave pseudopotential density functional calculations to show that the lowest energy D-6h C-36 crystal is a highly bonded network of hexagonal planes of C-36 units with AB stacking. This crystal is significantly more dense and lower in energy than previously proposed structures. We demonstrate that Na is the largest alkali atom that can be intercalated into the crystal structure without causing severe structural distortion. Further, we predict the reaction pathway to form a neutral C-36 dimer to be barrierless, while negatively charged C-36 molecules are less likely to bond due to a substantial barrier of formation. [S0163-1839(99)50234-8]. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 10 TC 18 Z9 18 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1999 VL 60 IS 10 BP R6941 EP R6944 DI 10.1103/PhysRevB.60.R6941 PG 4 WC Physics, Condensed Matter SC Physics GA 239PD UT WOS:000082777800001 ER PT J AU Bender, M Rutz, K Reinhard, PG Maruhn, JA Greiner, W AF Bender, M Rutz, K Reinhard, PG Maruhn, JA Greiner, W TI Shell structure of superheavy nuclei in self-consistent mean-field models SO PHYSICAL REVIEW C LA English DT Article ID GROUND-STATE PROPERTIES; FISSION-BARRIERS; EFFECTIVE FORCES; HEAVIEST NUCLEI; FINITE NUCLEI; MASS FORMULA; HALF-LIVES; ODD NUCLEI; PARAMETRIZATION; ELEMENTS AB We study the extrapolation of nuclear shell structure to the region of superheavy nuclei in self-consistent mean-field models-the Skyrme-Hartree-Fock approach and the relativistic mean-held model-using a large number of parametrizations which give similar results for stable nuclei but differ in detail. Results obtained with the folded-Yukawa potential which is widely used in macroscopic-macroscopic models are shown for comparison. We focus on differences in the isospin dependence of the spin-orbit interaction and the effective mass between the models and their influence on single-particle spectra. The predictive power of the mean-held models concerning single-particle spectra is discussed for the examples of Pb-208 and the spin-orbit splittings of selected neutron and proton levels in O-16, Sn-132, and Pb-208. While all relativistic models give a reasonable description of spin-orbit splittings, all Skyrme interactions shaw a wrong trend with mass number. The spinorbit splitting of heavy nuclei might be overestimated by 40%-80%, which exposes a fundamental deficiency of the current nonrelativistic models. In most cases the occurrence of spherical shell closures is found to be nucleon-number dependent. Spherical doubly magic superheavy nuclei are found at (298)(184)114, (292)(172)120, .or (310)(184)126 depending on the parametrization. The Z = 114 proton shell closure, which is related to a large spin-orbit splitting of proton 2f states, is predicted only by forces which by far overestimate the proton spin-orbit splitting in Pb-208. The Z = 120 and N = 172 shell closures predicted by the relativistic models and some Skyrme interactions are found to be related to a central depression of the nuclear density distribution. This effect cannot appear in macroscopic-microscopic models or semiclassical approaches like the extended Thomas-Fermi-Strutinski integral approach which have a limited freedom for the density distribution only. In summary, our findings give a strong argument for (292)(172)120 to be the next spherical doubly magic superheavy nucleus. [S0556-2813(99)02708-9]. C1 Goethe Univ Frankfurt, Inst Theoret Phys, D-60325 Frankfurt, Germany. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ Erlangen Nurnberg, Inst Theoret Phys 2, D-91058 Erlangen, Germany. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. RP Goethe Univ Frankfurt, Inst Theoret Phys, Robert Mayer Str 10, D-60325 Frankfurt, Germany. RI Bender, Michael/B-9004-2009 NR 83 TC 309 Z9 321 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 034304 DI 10.1103/PhysRevC.60.034304 PG 20 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100021 ER PT J AU Friar, JL van Kolck, U AF Friar, JL van Kolck, U TI Charge-independence breaking in the two-pion-exchange nucleon-nucleon force SO PHYSICAL REVIEW C LA English DT Article ID CHIRAL LAGRANGIANS; SYMMETRY; QUARKS AB Charge-independence breaking due to the pion-mass difference in the (chiral) two-pion-exchange nucleon-nucleon force is investigated. A general argument based on symmetries is presented that relates the charge-symmetric part of that force to the proton-proton case. The static potential linear in that mass difference is worked out as an explicit example by means of Feynman diagrams, and this confirms the general argument. [S0556-2813(99)00909-7]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA. RP Friar, JL (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 40 TC 36 Z9 36 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 034006 DI 10.1103/PhysRevC.60.034006 PG 4 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100016 ER PT J AU Friar, JL AF Friar, JL TI Equivalence of nonstatic two-pion-exchange nucleon-nucleon potentials SO PHYSICAL REVIEW C LA English DT Article ID CHIRAL LAGRANGIANS; RELATIVISTIC CORRECTIONS; FORCES; EQUATIONS; DEUTERON; RETARDATION; SCATTERING; DYNAMICS; CHARGE; MODEL AB Off-shell aspects of the one-pion-exchange potential and their relationship to different forms of the nonstatic (subleading-order) chiral two-pion-exchange nucleon-nucleon potential are discussed. Various types of off-shell behavior are categorized and numerous examples are given. Recently derived potentials based on chiral approaches are supplemented by a rather general form of the two-pion-exchange potential that is derived using old-fashioned methods and exhibits off-shell dependence. The latter potential is closely related to a general form of one-pion-exchange relativistic corrections and nonstatic two-pion-exchange three-nucleon forces developed long ago. [S0556-2813(99)07508-1]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Friar, JL (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 46 TC 52 Z9 52 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 034002 DI 10.1103/PhysRevC.60.034002 PG 7 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100012 ER PT J AU Hsi, WC Kwiatkowski, K Wang, G Bracken, DS Cornell, E Ginger, DS Viola, VE Korteling, RG Morley, KB Huang, R Lynch, WG Tsang, MB Xi, H Gimeno-Nogues, F Ramakrishnan, E Rowland, D Yennello, SJ Breuer, H Gushue, S Remsberg, LP Botvina, A Friedman, WA AF Hsi, WC Kwiatkowski, K Wang, G Bracken, DS Cornell, E Ginger, DS Viola, VE Korteling, RG Morley, KB Huang, R Lynch, WG Tsang, MB Xi, H Gimeno-Nogues, F Ramakrishnan, E Rowland, D Yennello, SJ Breuer, H Gushue, S Remsberg, LP Botvina, A Friedman, WA TI Exclusive studies of angular distributions in GeV hadron-induced reactions with Au-197 SO PHYSICAL REVIEW C LA English DT Article ID INTERMEDIATE ENERGIES; FRAGMENT PRODUCTION; COLLISIONS; MULTIFRAGMENTATION; PROTONS; NUCLEI; SPECTRA; BUBBLE; 4-PI; AU AB Exclusive studies of angular distributions for intermediate-mass fragments (IMFs) produced in GeV hadron-induced reactions have been performed with the Indiana Silicon Sphere (ISiS) 4 pi detector array. Special emphasis has been given to understanding the origin of sideways peaking, which becomes prominent in the angular distributions for beam momenta above about 10 GeV/c. Both the magnitude of the effect and the peak angle increase as a function of fragment multiplicity and charge. When gated on IMF kinetic energy, the angular distributions evolve from forward-peaked to near isotropy as the fragment kinetic energy decreases. Fragment-fragment angular-correlation analyses show no obvious evidence for a dynamic mechanism that might signal shock wave effects or the breakup of exotic geometric shapes such as bubbles or toroids. Moving-source and intranuclear cascade simulations suggest that the observed sideways peaking is of kinematic origin, arising from significant transverse momentum imparted to the heavy recoil nucleus during the fast cascade stage of the collision. A hyo-step cascade and statistical multifragmentation calculation is consistent with this assumption. [S0556-2813(99)02909-X]. C1 Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. Indiana Univ, IUCF, Bloomington, IN 47405 USA. Simon Fraser Univ, Dept Chem, Burnaby, BC V5A I56, Canada. Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. Michigan State Univ, Dept Phys, E Lansing, MI 48824 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA. Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA. Univ Maryland, Dept Phys, College Pk, MD 20740 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Univ Bologna, Dept Phys, I-40126 Bologna, Italy. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. RP Hsi, WC (reprint author), Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. RI Ginger, David/C-4866-2011; Lynch, William/I-1447-2013; Rowland, Douglas/F-3104-2014; Yennello, Sherry/B-5803-2015 OI Ginger, David/0000-0002-9759-5447; Lynch, William/0000-0003-4503-176X; Rowland, Douglas/0000-0001-8059-6905; Yennello, Sherry/0000-0003-3963-5217 NR 36 TC 11 Z9 11 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 034609 DI 10.1103/PhysRevC.60.034609 PG 10 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100038 ER PT J AU Krucken, R Asztalos, SJ Clark, RM Deleplanque, MA Diamond, RM Fallon, P Lee, IY Macchiavelli, AO Schmid, GJ Stephens, FS Vetter, K Zhang, JY AF Krucken, R Asztalos, SJ Clark, RM Deleplanque, MA Diamond, RM Fallon, P Lee, IY Macchiavelli, AO Schmid, GJ Stephens, FS Vetter, K Zhang, JY TI vh(1/2) bands in Pd-113 and Pd-115 SO PHYSICAL REVIEW C LA English DT Article ID SPONTANEOUS FISSION; ISOTOPES; NUCLEI; MODEL AB Two cascades of gamma rays were discovered in Pd-113 and Pd-115 in prompt gamma-ray spectroscopy with Gamma-sphere following heavy-ion induced fission in the reaction O-18+Pb-208 at 91 MeV. Comparison with recently observed band structures in Pd-109 and Pd-111 as well as blacking arguments lead to an interpretation of these bands as nu h(11/2) bands. This discovery, together with cranked Woods-Saxon and total Routhian surface calculations, indicates that increased rotational frequency stabilizes a prolate but still gamma-soft shape in the neutron-rich, even-even Pd isotopes up to Pd-116, which exhibit very gamma-soft nuclear potentials in their respective ground states. [S0556-2813(99)50209-4]. C1 Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Tennessee, Knoxville, TN 37996 USA. RP Krucken, R (reprint author), Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA. RI Kruecken, Reiner/A-1640-2013 OI Kruecken, Reiner/0000-0002-2755-8042 NR 11 TC 21 Z9 21 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 031302 PG 4 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100003 ER PT J AU Lee, FX Bennhold, C Kamalov, SS Wright, LE AF Lee, FX Bennhold, C Kamalov, SS Wright, LE TI Higher nucleon resonances in exclusive (gamma,pi N) reactions on nuclei SO PHYSICAL REVIEW C LA English DT Article ID PHOTOABSORPTION CROSS-SECTION; PION-PHOTOPRODUCTION; ELASTIC-SCATTERING; REGION; MODEL; ELECTROPRODUCTION; THRESHOLD; EXCHANGE AB We report calculations for exclusive pion photoproduction on nuclei beyond the first resonance region in the distorted wave impulse approximation. The elementary operator contains contributions from the resonances P-33(1232), P-11(1440), D-13(1520), D-33(1700), S-11(1535), S11(1650), and F-15(1680), in addition to the usual Born plus vector meson contributions. It gives a good description of single pion photoproduction data up to about 1.1 GeV. Final state interactions are incorporated via optical potentials and are found to be substantial in the coincidence cross sections, but insensitive to the photon asymmetry. Clear signatures of possible medium modifications of the D-13 and F-15 resonances are predicted under selected kinematics. [S0556-2813(99)01209-1]. C1 George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA. Jefferson Lab, Newport News, VA 23606 USA. Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany. Ohio Univ, Dept Phys & Astron, Inst Nucl & Particle Phys, Athens, OH 45701 USA. RP Lee, FX (reprint author), George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA. NR 33 TC 6 Z9 6 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 034605 DI 10.1103/PhysRevC.60.034605 PG 11 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100034 ER PT J AU Liou, MK Timmermans, R Gibson, BF Li, K AF Liou, MK Timmermans, R Gibson, BF Li, K TI Comment on "Validity of certain soft photon amplitudes" SO PHYSICAL REVIEW C LA English DT Letter ID BREMSSTRAHLUNG AB The criteria suggested by Welsh and Fearing to judge the validity of certain soft-photon amplitudes are examined. Some aspects of their analysis lead to incorrect conclusions. [S0556-2813(99)07808-5]. C1 CUNY Brooklyn Coll, Dept Phys, Brooklyn, NY 11210 USA. CUNY Brooklyn Coll, Inst Nucl Theory, Brooklyn, NY 11210 USA. Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands. Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Liou, MK (reprint author), CUNY Brooklyn Coll, Dept Phys, Brooklyn, NY 11210 USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 039801 PG 2 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100070 ER PT J AU Monreal, B Bass, SA Bleicher, M Esumi, S Greiner, W Li, Q Liu, H Llope, WJ Mattiello, R Panitkin, S Sakrejda, I Snellings, R Sorge, H Spieles, C Stocker, H Thomas, J Voloshin, S Wang, F Xu, N AF Monreal, B Bass, SA Bleicher, M Esumi, S Greiner, W Li, Q Liu, H Llope, WJ Mattiello, R Panitkin, S Sakrejda, I Snellings, R Sorge, H Spieles, C Stocker, H Thomas, J Voloshin, S Wang, F Xu, N TI Deuterons and space-momentum correlations in high energy nuclear collisions SO PHYSICAL REVIEW C LA English DT Article ID HEAVY-ION COLLISIONS; BOUND-STATE PRODUCTION; QUARK-GLUON-PLASMA; COALESCENCE MODEL; FLOW; PARAMETERS; EXPANSION; SIZE AB Using a microscopic transport model together with a coalescence afterburner, we study the formation of deuterons in Au+Au central collisions at root s = 200A GeV. It is found that the deuteron transverse momentum distributions are strongly affected by the nucleon space-momentum correlations, at the moment of freeze-out, which are mostly determined by the number of rescatterings. This feature is useful for studying collision dynamics at ultrarelativistic energies. [S0556-2813(99)50309-9]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Duke Univ, Dept Phys, Durham, NC 27708 USA. Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany. Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany. Kent State Univ, Dept Phys, Kent, OH 44242 USA. Rice Univ, TW Bonner Nucl Lab, Houston, TX 77005 USA. Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA. Yale Univ, New Haven, CT 06520 USA. RP Monreal, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Bleicher, Marcus/A-2758-2010; Voloshin, Sergei/I-4122-2013; Stoecker, Horst/D-6173-2013 OI Stoecker, Horst/0000-0002-3282-3664 NR 36 TC 7 Z9 7 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 031901 PG 4 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100010 ER PT J AU Moretto, LG Phair, L Wozniak, GJ AF Moretto, LG Phair, L Wozniak, GJ TI Resilient reducibility in nuclear multifragmentation SO PHYSICAL REVIEW C LA English DT Article ID ELEMENTARY BINARY EMISSION AB The resilience to averaging over an initial energy distribution of reducibility and thermal scaling observed in nuclear multifragmentation is studied. Poissonian reducibility and the associated thermal scaling of the mean are shown to be robust. Binomial reducibility and thermal scaling of the elementary probability are robust under a broad range of conditions. The experimental data do not show any indication of deviation due to averaging. [S0556-2813(99)04608-7]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Moretto, LG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 9 TC 7 Z9 7 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 031601 PG 5 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100007 ER PT J AU Seweryniak, D Uusitalo, J Carpenter, MP Nisius, D Davids, CN Bingham, CR Brown, LT Conticchio, L Henderson, DJ Janssens, RVF Walters, WB Wauters, J Woods, PJ AF Seweryniak, D Uusitalo, J Carpenter, MP Nisius, D Davids, CN Bingham, CR Brown, LT Conticchio, L Henderson, DJ Janssens, RVF Walters, WB Wauters, J Woods, PJ TI Decay properties of the new isotopes Hg-172 and Hg-173 SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON-DEFICIENT ISOTOPES AB The alpha decays of the two neutron-deficient nuclei Hg-172 and Hg-173 were observed for the first time using the Kr-78(Ru-96,2n) and Kr-80(Ru-96,3n) reactions, respectively. The reaction products were dispersed according to their mass-to-charge state ratios in the Argonne Fragment Mass Analyzer and implanted in a double-sided silicon strip detector, where their subsequent decays were studied using spatial and time correlations between implants and decays. A half-life of 250((+350)(-90)) mu s and an energy of 7350(12) keV were deduced for the alpha decay of Hg-172. In Hg-173 the half-life was measured to be 0.93((+0.57)(-0.26)) ms and the corresponding energy is 7211(11) keV. In addition, the half-life and energy of the alpha decay of Hg-174 were measured more precisely. The reduced widths deduced for these Hg isotopes indicate that the observed decays correspond to unhindered Delta l=0 transitions. The alpha-decay Q values are compared with the values calculated using mass tables by Moller and Nix, and by Liran and Zeldes. The latter mass tables show better agreement with the data. [S0556-2813(99)50409-3]. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Maryland, College Pk, MD 20742 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Edinburgh, Edinburgh, Midlothian, Scotland. RP Seweryniak, D (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 17 TC 11 Z9 11 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 031304 DI 10.1103/PhysRevC.60.031304 PG 4 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100005 ER PT J AU Titov, AI Lee, TSH Toki, H Streltsova, O AF Titov, AI Lee, TSH Toki, H Streltsova, O TI Structure of the phi photoproduction amplitude at a few GeV SO PHYSICAL REVIEW C LA English DT Article ID DEEP INELASTIC-SCATTERING; VECTOR-MESON PRODUCTION; NEAR-THRESHOLD; POLARIZATION OBSERVABLES; MOMENTUM-TRANSFER; MATRIX-ELEMENTS; SCALAR MESONS; OZI-RULE; PROTON; NUCLEON AB The structure of the phi photoproduction amplitude in the root s similar to 2-5 GeV region is analyzed based on Pomeron-exchange and meson-exchange mechanisms. The SU(3) symmetry and the phi decay widths are exploited to determine the parameters that are needed to predict the amplitudes due to pseudoscalar mesons (pi(0), eta) exchange, scalar mesons (sigma a(0),f(0)) exchange, and the phi radiation from the nucleon. In addition to the universally accepted Pomeron exchange with an intercept alpha(0) similar to 1.08, we investigate the role of a second Pomeron with alpha(0) < 0, as inspired by the glueball (J(pi) = 0(+), M-b(2) similar to 3 GeV2) predicted by the lattice QCD calculation and dual Ginsburg-Landau model. It is found that the existing limited data at low energies near threshold can accommodate either the second Pomeron or the scalar mesons exchange. The differences between these two competing mechanisms are shown to have profound effects on various density matrices which can be used to calculate the cross sections as well as various single and double polarization observables. We predict a definite isotopic effect: polarization observables of phi photoproduction on the proton and neutron targets can have differences of a factor 2 and more. [S0556-2813(99)04908-0]. C1 Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan. Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan. EM atitov@thsunl.jinr.ru; lee@anph09.phy.anl.gov; toki@rcnp.osaka-u.ac.jp NR 69 TC 79 Z9 79 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 035205 DI 10.1103/PhysRevC.60.035205 PG 20 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100054 ER PT J AU Yu, CH Baktash, C Dobaczewski, J Cameron, JA Chitu, C Devlin, M Eberth, J Galindo-Uribarri, A Haslip, DS LaFosse, DR Lampman, TJ Lee, IY Lerma, F Macchiavelli, AO Paul, SD Radford, DC Rudolph, D Sarantites, DG Svensson, CE Waddington, JC Wilson, JN AF Yu, CH Baktash, C Dobaczewski, J Cameron, JA Chitu, C Devlin, M Eberth, J Galindo-Uribarri, A Haslip, DS LaFosse, DR Lampman, TJ Lee, IY Lerma, F Macchiavelli, AO Paul, SD Radford, DC Rudolph, D Sarantites, DG Svensson, CE Waddington, JC Wilson, JN TI Comparison of superdeformed bands in Zn-61 and Zn-60: Possible evidence for T=0 pairing SO PHYSICAL REVIEW C LA English DT Article ID HIGH-SPIN STATES; HARMONIC-OSCILLATOR BASIS; HARTREE-FOCK EQUATIONS; CR-48; TERMINATION; MN-49 AB The yrast superdeformed band in Zn-61 has been established using Si-28(Ar-36, 2pn)Zn-61 and Ca-40(Si-29, 2 alpha)Zn-61 fusion-evaporation reactions. The excitation energy of this band was determined via two transitions that link this band to the normally deformed states. Lifetime analysis of this band resulted in a quadrupole moment of Q(t) = 3.0 +/- (0.5)(0.4)e b, which corresponds to a deformation of beta(2) = 0.50+/-(0.07)(0.06). A comparison of the J((2)) dynamical moments of inertia of the yrast superdeformed band in Zn-61 with those in Zn-60 shows a nearly complete blocking of the observed alignment in Zn-60, indicating that T=0 proton-neutron pair correlations may be present in Zn-60. [S0556-2813(99)51109-6]. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. Washington Univ, Dept Chem, St Louis, MO 63130 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA. Univ Lund, Dept Phys, S-22100 Lund, Sweden. RP Yu, CH (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI Rudolph, Dirk/D-4259-2009; radford, David/A-3928-2015; Devlin, Matthew/B-5089-2013 OI Rudolph, Dirk/0000-0003-1199-3055; Devlin, Matthew/0000-0002-6948-2154 NR 26 TC 35 Z9 36 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1999 VL 60 IS 3 AR 031305 DI 10.1103/PhysRevC.60.031305 PG 5 WC Physics, Nuclear SC Physics GA 238VM UT WOS:000082735100006 ER PT J AU Abbott, B Abolins, M Abramov, V Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Aihara, H Alves, GA Amos, N Anderson, EW Astur, R Baarmand, MM Babintsev, VV Babukhadia, L Baden, A Balamurali, V Baldin, B Banerjee, S Bantly, J Barberis, E Baringer, P Bartlett, JF Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Breedon, R Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chang, SM Chekulaev, SV Chen, LP Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, MAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Finocchiaro, G Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Gavrilov, V Geld, TL Genik, RJ Genser, K Gerber, CE Gershtein, Y Gibbard, B Gobbi, B Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grinstein, S Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Hu, T Huehn, T Ito, AS James, E Jaques, J Jerger, SA Jesik, R Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Karmanov, D Karmgard, D Kehoe, R Kelly, ML Kim, SK Klima, B Klopfenstein, C Ko, W Kohli, JH Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kuleshov, S Kunori, S Landry, F Landsberg, G Lauer, B Leflat, A Li, J Li-Demarteau, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lobkowicz, F Loken, SC Lucotte, A Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Mooney, P Mostafa, M da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shupe, M Singh, H Singh, JB Sirotenko, V Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sosebee, M Sotnikova, N Souza, M Spadafora, AL Steinbruck, G Stephens, RW Stevenson, ML Stewart, D Stichelbaut, F Stoker, D Stolin, V Stoyanova, DA Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Vaniev, V Varelas, N Varnes, EW Vititoe, D Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Wu, Z Xu, H Yamada, R Yamin, P Yasuda, T Yepes, P Yip, K Yoshikawa, C Youssef, S Yu, J Yu, Y Zhang, B Zhou, Y Zhou, Z Zhu, ZH Zielinski, M Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A AF Abbott, B Abolins, M Abramov, V Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Aihara, H Alves, GA Amos, N Anderson, EW Astur, R Baarmand, MM Babintsev, VV Babukhadia, L Baden, A Balamurali, V Baldin, B Banerjee, S Bantly, J Barberis, E Baringer, P Bartlett, JF Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Breedon, R Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chang, SM Chekulaev, SV Chen, LP Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, MAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Finocchiaro, G Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Gavrilov, V Geld, TL Genik, RJ Genser, K Gerber, CE Gershtein, Y Gibbard, B Gobbi, B Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grinstein, S Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Hu, T Huehn, T Ito, AS James, E Jaques, J Jerger, SA Jesik, R Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Karmanov, D Karmgard, D Kehoe, R Kelly, ML Kim, SK Klima, B Klopfenstein, C Ko, W Kohli, JH Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kuleshov, S Kunori, S Landry, F Landsberg, G Lauer, B Leflat, A Li, J Li-Demarteau, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lobkowicz, F Loken, SC Lucotte, A Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Mooney, P Mostafa, M da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shupe, M Singh, H Singh, JB Sirotenko, V Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sosebee, M Sotnikova, N Souza, M Spadafora, AL Steinbruck, G Stephens, RW Stevenson, ML Stewart, D Stichelbaut, F Stoker, D Stolin, V Stoyanova, DA Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Vaniev, V Varelas, N Varnes, EW Vititoe, D Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Wu, Z Xu, H Yamada, R Yamin, P Yasuda, T Yepes, P Yip, K Yoshikawa, C Youssef, S Yu, J Yu, Y Zhang, B Zhou, Y Zhou, Z Zhu, ZH Zielinski, M Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A CA DO Collaboration TI Measurement of the top quark mass in the dilepton channel SO PHYSICAL REVIEW D LA English DT Article ID PRODUCTION CROSS-SECTION; W-BOSON MASS; PARTON DISTRIBUTIONS; P(P)OVER-BAR COLLISIONS; COLLIDER DETECTOR; LIKELIHOOD METHOD; MISSING MOMENTUM; EVENTS; FERMILAB; RECONSTRUCTION AB We report a measurement of the top quark mass using six candidate events for the process -->+X -->l(+) nu bl(-) <(nu b)over bar> + X, observed in the D0 experiment at the Fermilab collider. Using maximum likelihood fits to the dynamics of the decays, we measure a mass for the top quark of m(t) = 168.4+/-12.3(stat) +/-3.6(syst) Gev. We combine this result with our previous measurement in the -->l+ jets channel to obtain m(t) = 172.1+/-7.1 GeV as the best value of the mass of the top quark measured by D0. [S0556-2821(99)04913-9]. C1 NYU, New York, NY 10003 USA. Univ Buenos Aires, Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Los Andes, Bogota, Colombia. CEA, Serv Phys Particules, DAPNIA, Saclay, France. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Mumbai, India. Kyungsung Univ, Pusan 608736, South Korea. Seoul Natl Univ, Seoul, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. Inst Nucl Phys, Krakow, Poland. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Univ Hawaii, Honolulu, HI 96822 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Purdue Univ, W Lafayette, IN 47907 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Nebraska, Lincoln, NE 68588 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Oklahoma, Norman, OK 73019 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. Texas A&M Univ, College Stn, TX 77843 USA. Rice Univ, Houston, TX 77005 USA. RP Abbott, B (reprint author), NYU, New York, NY 10003 USA. RI Belyaev, Alexander/F-6637-2015; Kim, Sun Kee/G-2042-2015; Chekulaev, Sergey/O-1145-2015; Sznajder, Andre/L-1621-2016; Aihara, Hiroaki/F-3854-2010; Shivpuri, R K/A-5848-2010; Wang, Chi/G-9004-2011; Gutierrez, Phillip/C-1161-2011; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Yip, Kin/D-6860-2013; Kuleshov, Sergey/D-9940-2013; De, Kaushik/N-1953-2013; Oguri, Vitor/B-5403-2013; Alves, Gilvan/C-4007-2013 OI Belyaev, Alexander/0000-0002-1733-4408; Kim, Sun Kee/0000-0002-0013-0775; Sznajder, Andre/0000-0001-6998-1108; Aihara, Hiroaki/0000-0002-1907-5964; Dudko, Lev/0000-0002-4462-3192; Yip, Kin/0000-0002-8576-4311; Kuleshov, Sergey/0000-0002-3065-326X; De, Kaushik/0000-0002-5647-4489; NR 33 TC 91 Z9 91 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 052001 DI 10.1103/PhysRevD.60.052001 PG 21 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200005 ER PT J AU Abbott, B Abolins, M Abramov, V Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Alves, GA Amos, N Anderson, EM Baarmand, MM Babintsev, VV Babukhadia, L Baden, A Baldin, B Banerjee, S Bantly, J Barberis, E Baringer, P Bartlett, JF Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Breedon, R Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chekulaev, SV Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, HAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Gavrilov, V Geld, TL Genik, RJ Genser, K Gerber, CE Gershtein, Y Gibbard, B Gobbi, B Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grinstein, S Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Ito, AS Jacques, J Jerger, SA Jesik, R Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Karmanov, D Karmgard, D Kehoe, R Kim, SK Klima, B Klopfenstein, C Ko, W Kohli, JM Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kuleshov, S Kulik, Y Kunori, S Landry, F Landsberg, G Lauer, B Leflat, A Li, J Li, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lobkowicz, F Loken, SC Lucotte, A Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, HK Montgomery, HE Mooney, P Mostafa, M da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Parashar, N Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shpakov, D Shupe, M Singh, H Singh, JB Sirotenko, V Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sosebee, M Sotnikova, N Souza, M Steinbruck, G Stephens, RW Stevenson, ML Stichelbaut, F Stoker, D Stolin, V Stoyanova, DA Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Vaniev, V Varelas, N Varnes, EW Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Wu, Z Yamada, R Yamin, P Yasuda, T Yepes, P Yip, K Yoshikawa, C Youssef, S Yu, J Yu, Y Zhang, B Zhou, Y Zhou, Z Zhu, ZH Zielinski, M Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A AF Abbott, B Abolins, M Abramov, V Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Alves, GA Amos, N Anderson, EM Baarmand, MM Babintsev, VV Babukhadia, L Baden, A Baldin, B Banerjee, S Bantly, J Barberis, E Baringer, P Bartlett, JF Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Breedon, R Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chekulaev, SV Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, HAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Gavrilov, V Geld, TL Genik, RJ Genser, K Gerber, CE Gershtein, Y Gibbard, B Gobbi, B Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grinstein, S Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Ito, AS Jacques, J Jerger, SA Jesik, R Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Karmanov, D Karmgard, D Kehoe, R Kim, SK Klima, B Klopfenstein, C Ko, W Kohli, JM Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kuleshov, S Kulik, Y Kunori, S Landry, F Landsberg, G Lauer, B Leflat, A Li, J Li, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lobkowicz, F Loken, SC Lucotte, A Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, HK Montgomery, HE Mooney, P Mostafa, M da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Parashar, N Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shpakov, D Shupe, M Singh, H Singh, JB Sirotenko, V Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sosebee, M Sotnikova, N Souza, M Steinbruck, G Stephens, RW Stevenson, ML Stichelbaut, F Stoker, D Stolin, V Stoyanova, DA Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Vaniev, V Varelas, N Varnes, EW Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Wu, Z Yamada, R Yamin, P Yasuda, T Yepes, P Yip, K Yoshikawa, C Youssef, S Yu, J Yu, Y Zhang, B Zhou, Y Zhou, Z Zhu, ZH Zielinski, M Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A CA DO Collaboration TI Measurement of W and Z boson production cross sections in p(p)over-bar collisions at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID YAN K-FACTOR; PBARP COLLISIONS; D0 DETECTOR; CALORIMETER; COLLIDER; PARTICLE; PHYSICS; WIDTH; DECAY; QCD AB D0 has measured the inclusive production cross section of W and Z bosons in a sample of 13 pb(-1) of data collected at the Fermilab Tevatron. The cross sections, multiplied by their leptonic branching fractions, for production in collisions at root s = 1.8 TeV are sigma(W)B(W-->e nu) = 2.36+/-0.02+/-0.08+/-0.13 nb, sigma(W)B(W-->mu nu) = 2.09+/-0.06+/-0.22+/-0.11 nb, sigma(Z)B(Z-->e(+)e(-)) = 0.218+/-0.008+/-0.008+/-0.012 nb, and sigma(Z)B(Z -->mu(+)mu(-)) = 0.178+/-0.022+/-0.021+/-0.009 nb, where the first uncertainty is statistical and the second systematic; the third reflects the uncertainty in the integrated luminosity. For the combined electron and muon analyses, we find sigma(W)B(W-->l nu)/sigma(Z)B(Z-->l(+)l(-)) = 10.90+/-0.52. Assuming standard model couplings, we use this result to determine the width of the W boson, and obtain Gamma(W) = 2.044+/-0.097 GeV. [S0556-2821(99)02715-0]. C1 NYU, New York, NY 10003 USA. Univ Buenos Aires, Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Los Andes, Bogota, Colombia. CEA, Serv Phys Particules, DAPNIA, Saclay, France. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Mumbai, India. Kyungsung Univ, Pusan 608736, South Korea. Seoul Natl Univ, Seoul, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. Inst Nucl Phys, Krakow, Poland. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Univ Hawaii, Honolulu, HI 96822 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Purdue Univ, W Lafayette, IN 47907 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Nebraska, Lincoln, NE 68588 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Langston, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. Texas A&M Univ, College Stn, TX 77843 USA. Rice Univ, Houston, TX 77005 USA. RP Abbott, B (reprint author), NYU, New York, NY 10003 USA. RI Belyaev, Alexander/F-6637-2015; Kim, Sun Kee/G-2042-2015; Chekulaev, Sergey/O-1145-2015; Sznajder, Andre/L-1621-2016; Santoro, Alberto/E-7932-2014; Peters, Michael/B-4973-2009; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Yip, Kin/D-6860-2013; Kuleshov, Sergey/D-9940-2013; De, Kaushik/N-1953-2013; Oguri, Vitor/B-5403-2013; Alves, Gilvan/C-4007-2013 OI Belyaev, Alexander/0000-0002-1733-4408; Kim, Sun Kee/0000-0002-0013-0775; Sznajder, Andre/0000-0001-6998-1108; Dudko, Lev/0000-0002-4462-3192; Yip, Kin/0000-0002-8576-4311; Kuleshov, Sergey/0000-0002-3065-326X; De, Kaushik/0000-0002-5647-4489; NR 45 TC 17 Z9 17 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 052003 DI 10.1103/PhysRevD.60.052003 PG 21 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200007 ER PT J AU Abe, F Akimoto, H Akopian, A Albrow, MG Amendolia, SR Amidei, D Antos, J Aota, S Apollinari, G Arisawa, T Asakawa, T Ashmanskas, W Atac, M Azzi-Bacchetta, P Bacchetta, N Bagdasarov, S Bailey, MW de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Barone, M Bauer, G Baumann, T Bedeschi, F Behrends, S Belforte, S Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bertolucci, S Bettelli, S Bevensee, B Bhatti, A Biery, K Bigongiari, C Binkley, M Bisello, D Blair, RE Blocker, C Bloom, K Blusk, S Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A Breccia, L Bromberg, C Bruner, N Brunetti, R Buckley-Geer, E Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Campbell, M Caner, A Carithers, W Carlsmith, D Cassada, J Castro, A Cauz, D Cerri, A Chang, PS Chang, PT Chao, HY Chapman, J Cheng, MT Chertok, M Chiarelli, G Chiou, CN Chlebana, F Christofek, L Chu, ML Cihangir, S Clark, AG Cobal, M Cocca, E Contreras, M Conway, J Cooper, J Cordelli, M Costanzo, D Couyoumtzelis, C Cronin-Hennessy, D Cropp, R Culbertson, R Dagenhart, D Daniels, T DeJongh, F Dell'Agnello, S Dell'Orso, M Demina, R Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dolce, G Donati, S Done, J Dorigo, T Eddy, N Einsweiler, K Elias, JE Ely, R Engels, E Erdmann, W Errede, D Errede, S Fan, Q Feild, RG Feng, Z Ferretti, C Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, H Fukui, Y Gadomski, S Galeotti, S Gallinaro, M Ganel, O Garcia-Sciveres, M Garfinkel, AF Gay, C Geer, S Gerdes, DW Giannetti, P Giokaris, N Giromini, P Giusti, G Gold, M Gordon, A Goshaw, AT Gotra, Y Goulianos, K Grassmann, H Green, C Groer, L Grosso-Pilcher, C Guillian, G da Costa, JG Guo, RS Haber, C Hafen, E Hahn, SR Hamilton, R Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hauser, J Hayashi, E Heinrich, J Heiss, A Hinrichsen, B Hoffman, KD Holck, C Hollebeek, R Holloway, L Huang, Z Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incagli, M Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jensen, H Joshi, U Kajfasz, E Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Kestenbaum, D Khazins, D Kikuchi, T Kirk, M Kim, BJ Kim, HS Kim, SH Kim, YK Kirsch, L Klimenko, S Knoblauch, D Koehn, P Kongeter, A Kondo, K Konigsberg, J Kordas, K Korytov, A Kovacs, E Kowald, W Kroll, J Kruse, M Kuhlmann, SE Kuns, E Kurino, K Kuwabara, T Laasanen, AT Lami, S Lammel, S Lamoureux, JI Lancaster, M Lanzoni, M Latino, G LeCompte, T Lee, AM Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Lockyer, N Long, O Loreti, M Lucchesi, D Lukens, P Lusin, S Lys, J Maeshima, K Maksimovic, P Mangano, M Mariotti, M Marriner, JP Martignon, G Martin, A Matthews, JAJ Mazzanti, P McFarland, K McIntyre, P Melese, P Menguzzato, M Menzione, A Meschi, E Metzler, S Miao, C Miao, T Michail, G Miller, R Minato, H Miscetti, S Mishina, M Miyashita, S Moggi, N Moore, E Morita, Y Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Musy, M Nakada, H Nakaya, T Nakano, I Nelson, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Ohmoto, T Ohsugi, T Oishi, R Okabe, M Okusawa, T Olsen, J Pagliarone, C Paoletti, R Papadimitriou, V Pappas, SP Parashar, N Parri, A Partos, D Patrick, J Pauletta, G Paulini, M Perazzo, A Pescara, L Peters, MD Phillips, TJ Piacentino, G Pillai, M Pitts, KT Plunkett, R Pompos, A Pondrom, L Proudfoot, J Ptohos, F Punzi, G Ragan, K Reher, D Ribon, A Rimondi, F Ristori, L Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Saab, T Sakumoto, WK Saltzberg, D Sansoni, A Santi, L Sato, H Schlabach, P Schmidt, EE Schmidt, MP Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semeria, F Shah, T Shapiro, MD Shaw, NM Shepard, PF Shibayama, T Shimojima, M Shochet, M Siegrist, J Sill, A Sinervo, P Singh, P Sliwa, K Smith, C Snider, FD Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Stanco, L Steele, J Stefanini, A Strohmer, R Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, J Suzuki, T Takahashi, T Takano, T Takashima, R Takikawa, K Tanaka, M Tannenbaum, B Tartarelli, F Taylor, W Tecchio, M Teng, PK Teramoto, Y Terashi, K Tether, S Theriot, D Thomas, TL Thurman-Keup, R Timko, M Tipton, P Titov, A Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Toyoda, H Trischuk, W de Troconiz, JF Truitt, S Tseng, J Turini, N Uchida, T Ukegawa, F Valls, J van den Brink, SC Vejcik, S Velev, G Vidal, R Vilar, R Vologouev, I Vucinic, D Wagner, RG Wagner, RL Wahl, J Wallace, NB Walsh, AM Wang, C Wang, CH Wang, MJ Warburton, A Watanabe, T Watts, T Webb, R Wei, C Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkinson, R Williams, HH Wilson, P Winer, BL Winn, D Wolinski, D Wolinski, J Worm, S Wu, X Wyss, J Yagil, A Yao, W Yasuoka, K Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Zanetti, A Zetti, F Zucchelli, S AF Abe, F Akimoto, H Akopian, A Albrow, MG Amendolia, SR Amidei, D Antos, J Aota, S Apollinari, G Arisawa, T Asakawa, T Ashmanskas, W Atac, M Azzi-Bacchetta, P Bacchetta, N Bagdasarov, S Bailey, MW de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Barone, M Bauer, G Baumann, T Bedeschi, F Behrends, S Belforte, S Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bertolucci, S Bettelli, S Bevensee, B Bhatti, A Biery, K Bigongiari, C Binkley, M Bisello, D Blair, RE Blocker, C Bloom, K Blusk, S Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A Breccia, L Bromberg, C Bruner, N Brunetti, R Buckley-Geer, E Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Campbell, M Caner, A Carithers, W Carlsmith, D Cassada, J Castro, A Cauz, D Cerri, A Chang, PS Chang, PT Chao, HY Chapman, J Cheng, MT Chertok, M Chiarelli, G Chiou, CN Chlebana, F Christofek, L Chu, ML Cihangir, S Clark, AG Cobal, M Cocca, E Contreras, M Conway, J Cooper, J Cordelli, M Costanzo, D Couyoumtzelis, C Cronin-Hennessy, D Cropp, R Culbertson, R Dagenhart, D Daniels, T DeJongh, F Dell'Agnello, S Dell'Orso, M Demina, R Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dolce, G Donati, S Done, J Dorigo, T Eddy, N Einsweiler, K Elias, JE Ely, R Engels, E Erdmann, W Errede, D Errede, S Fan, Q Feild, RG Feng, Z Ferretti, C Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, H Fukui, Y Gadomski, S Galeotti, S Gallinaro, M Ganel, O Garcia-Sciveres, M Garfinkel, AF Gay, C Geer, S Gerdes, DW Giannetti, P Giokaris, N Giromini, P Giusti, G Gold, M Gordon, A Goshaw, AT Gotra, Y Goulianos, K Grassmann, H Green, C Groer, L Grosso-Pilcher, C Guillian, G da Costa, JG Guo, RS Haber, C Hafen, E Hahn, SR Hamilton, R Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hauser, J Hayashi, E Heinrich, J Heiss, A Hinrichsen, B Hoffman, KD Holck, C Hollebeek, R Holloway, L Huang, Z Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incagli, M Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jensen, H Joshi, U Kajfasz, E Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Kestenbaum, D Khazins, D Kikuchi, T Kirk, M Kim, BJ Kim, HS Kim, SH Kim, YK Kirsch, L Klimenko, S Knoblauch, D Koehn, P Kongeter, A Kondo, K Konigsberg, J Kordas, K Korytov, A Kovacs, E Kowald, W Kroll, J Kruse, M Kuhlmann, SE Kuns, E Kurino, K Kuwabara, T Laasanen, AT Lami, S Lammel, S Lamoureux, JI Lancaster, M Lanzoni, M Latino, G LeCompte, T Lee, AM Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Lockyer, N Long, O Loreti, M Lucchesi, D Lukens, P Lusin, S Lys, J Maeshima, K Maksimovic, P Mangano, M Mariotti, M Marriner, JP Martignon, G Martin, A Matthews, JAJ Mazzanti, P McFarland, K McIntyre, P Melese, P Menguzzato, M Menzione, A Meschi, E Metzler, S Miao, C Miao, T Michail, G Miller, R Minato, H Miscetti, S Mishina, M Miyashita, S Moggi, N Moore, E Morita, Y Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Musy, M Nakada, H Nakaya, T Nakano, I Nelson, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Ohmoto, T Ohsugi, T Oishi, R Okabe, M Okusawa, T Olsen, J Pagliarone, C Paoletti, R Papadimitriou, V Pappas, SP Parashar, N Parri, A Partos, D Patrick, J Pauletta, G Paulini, M Perazzo, A Pescara, L Peters, MD Phillips, TJ Piacentino, G Pillai, M Pitts, KT Plunkett, R Pompos, A Pondrom, L Proudfoot, J Ptohos, F Punzi, G Ragan, K Reher, D Ribon, A Rimondi, F Ristori, L Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Saab, T Sakumoto, WK Saltzberg, D Sansoni, A Santi, L Sato, H Schlabach, P Schmidt, EE Schmidt, MP Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semeria, F Shah, T Shapiro, MD Shaw, NM Shepard, PF Shibayama, T Shimojima, M Shochet, M Siegrist, J Sill, A Sinervo, P Singh, P Sliwa, K Smith, C Snider, FD Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Stanco, L Steele, J Stefanini, A Strohmer, R Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, J Suzuki, T Takahashi, T Takano, T Takashima, R Takikawa, K Tanaka, M Tannenbaum, B Tartarelli, F Taylor, W Tecchio, M Teng, PK Teramoto, Y Terashi, K Tether, S Theriot, D Thomas, TL Thurman-Keup, R Timko, M Tipton, P Titov, A Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Toyoda, H Trischuk, W de Troconiz, JF Truitt, S Tseng, J Turini, N Uchida, T Ukegawa, F Valls, J van den Brink, SC Vejcik, S Velev, G Vidal, R Vilar, R Vologouev, I Vucinic, D Wagner, RG Wagner, RL Wahl, J Wallace, NB Walsh, AM Wang, C Wang, CH Wang, MJ Warburton, A Watanabe, T Watts, T Webb, R Wei, C Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkinson, R Williams, HH Wilson, P Winer, BL Winn, D Wolinski, D Wolinski, J Worm, S Wu, X Wyss, J Yagil, A Yao, W Yasuoka, K Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Measurement of the B-d(0)(B)over-bar(d)(0) oscillation frequency using dimuon data in (p)over-bar collisions at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID PARTICLE PHYSICS; CP-VIOLATION; DETECTOR; CDF AB We present a measurement of the mass difference Delta m(d) of the two B-d(0) mass eigenstates. We use a flavor tagging method based on the lepton charge, in a sample of events with two muons at low transverse momentum. The sample corresponds to an integrated luminosity of 90 pb(-1) collected by the Collider Detector at Fermilab. The result obtained is Delta m(d)=0.503+/-0.064(stat)+/-0.071(syst) ps(-1). [S0556-2821(99)50215-4]. C1 Natl Lab High Energy Phys, Ibaraki, Osaka 305, Japan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Chicago, Chicago, IL 60637 USA. Duke Univ, Durham, NC 27708 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Florida, Gainesville, FL 32611 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva 4, Switzerland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada. Univ Toronto, Toronto, ON M5S 1A7, Canada. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Ohio State Univ, Columbus, OH 43210 USA. Osaka City Univ, Osaka 588, Japan. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Univ Pisa, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. Acad Sinica, Taipei 11530, Taiwan. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Trieste Udine, Ist Nazl Fis Nucl, Udine, Italy. Univ Tsukuba, Ibaraki, Osaka 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Abe, F (reprint author), Natl Lab High Energy Phys, Ibaraki, Osaka 305, Japan. RI Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Warburton, Andreas/N-8028-2013; Paulini, Manfred/N-7794-2014; Introzzi, Gianluca/K-2497-2015; vilar, rocio/D-7454-2014; Lancaster, Mark/C-1693-2008 OI Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Warburton, Andreas/0000-0002-2298-7315; Paulini, Manfred/0000-0002-6714-5787; Introzzi, Gianluca/0000-0002-1314-2580; NR 13 TC 23 Z9 23 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 051101 DI 10.1103/PhysRevD.60.051101 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200001 ER PT J AU Armstrong, CS Stoler, P Adams, GS Ahmidouch, A Assamagan, K Avery, S Baker, OK Bosted, P Burkert, V Carlini, R Dunne, J Eden, T Ent, R Frolov, VV Gaskell, D Gueye, P Hinton, W Keppel, C Kim, W Klusman, M Koltenuk, D Mack, D Madey, R Meekins, D Minehart, R Mitchell, J Mkrtchyan, H Napolitano, J Niculescu, G Niculescu, I Nozar, M Price, JW Tadevosyan, V Tang, L Witkowski, M Wood, S AF Armstrong, CS Stoler, P Adams, GS Ahmidouch, A Assamagan, K Avery, S Baker, OK Bosted, P Burkert, V Carlini, R Dunne, J Eden, T Ent, R Frolov, VV Gaskell, D Gueye, P Hinton, W Keppel, C Kim, W Klusman, M Koltenuk, D Mack, D Madey, R Meekins, D Minehart, R Mitchell, J Mkrtchyan, H Napolitano, J Niculescu, G Niculescu, I Nozar, M Price, JW Tadevosyan, V Tang, L Witkowski, M Wood, S TI Electroproduction of the S-11(1535) resonance at high momentum transfer SO PHYSICAL REVIEW D LA English DT Article ID NUCLEON RESONANCES; PERTURBATIVE QCD; FORM-FACTORS; EXCLUSIVE PROCESSES; CHIRAL DYNAMICS; EXCITED BARYONS; QUARK-MODEL; ETA-MESONS; TRANSITION; PHOTOPRODUCTION AB The differential cross section for the process p(e,e' p) eta has been measured at Q(2) = 2.4 and 3.6 (GeV/c)(2) at center-of-mass energies encompassing the S-11(1535) resonance. The latter point is the highest-Q(2) exclusive measurement of this process to date. The resonance width and the helicity-1/2 transition amplitude are extracted from the data, and evidence for the possible onset of scaling in this reaction is shown. A lower bound of approximate to 0.45 is placed on the S-11(1535)-->p eta branching fraction. [S0556-2821(99)00417-8]. C1 American Univ, Dept Phys, Washington, DC 20016 USA. Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. Hampton Univ, Dept Phys, Hampton, VA 23668 USA. Kent State Univ, Dept Phys, Kent, OH 44242 USA. Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea. Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Univ Penn, Dept Phys, Philadelphia, PA 19104 USA. Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA. Yerevan Phys Inst, Yerevan 375036, Armenia. RP Armstrong, CS (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 36 TC 95 Z9 95 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 052004 DI 10.1103/PhysRevD.60.052004 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200008 ER PT J AU Bodwin, GT Chen, YQ AF Bodwin, GT Chen, YQ TI Renormalon ambiguities in NRQCD operator matrix elements SO PHYSICAL REVIEW D LA English DT Article ID QUARK EFFECTIVE THEORY; HEAVY-QUARK; PERTURBATION-THEORY; POLE MASS; FIELD-THEORIES; QCD ANALYSIS; ANNIHILATION; EXPANSION; DECAYS AB We analyze the renormalon ambiguities that appear in factorization formulas in PCD. Our analysis contains a simple argument that the ambiguities in the short-distance coefficients and operator matrix elements are artifacts of dimensional-regularization factorization schemes and are absent in cutoff schemes. We also present a method for computing the renormalon ambiguities in operator matrix elements and apply it to a computation of the ambiguities in the matrix elements that appear in the NRQCD factorization formulas for the annihilation decays of S-wave quarkonia. Our results, combined with those of Braaten and Chen for the short-distance coefficients, provide an explicit demonstration that the ambiguities cancel in the physical decay rates. In addition, we analyze the renormalon ambiguities in the Gremm-Kapustin relation and in various definitions of the heavy-quark mass. [S0556-2821(99)03813-8]. C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. RP Bodwin, GT (reprint author), Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. NR 22 TC 22 Z9 22 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054008 DI 10.1103/PhysRevD.60.054008 PG 16 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200026 ER PT J AU Brodsky, SJ Hiller, JR McCartor, G AF Brodsky, SJ Hiller, JR McCartor, G TI Application of Pauli-Villars regularization and discretized light-cone quantization to a (3+1)-dimensional model SO PHYSICAL REVIEW D LA English DT Article ID SINE-GORDON MODEL; FIELD-THEORY; FRONT QUANTIZATION; 3+1 DIMENSIONS; QCD; RENORMALIZATION; POSITRONIUM; HAMILTONIANS; HYPERFINE; QUARKONIA AB We apply Pauli-Villars regularization and discrete Light-cone quantization to the nonperturbative solution of a (3 + 1)-dimensional model field theory. The matrix eigenvalue problem is solved for the lowest-mass state with use of the complex symmetric Lanczos algorithm. This permits the calculation of each Fock-sector wave function, and from these we obtain values for various quantities, such as average multiplicities and average momenta of constituents, structure functions, and a form factor slope. [S0556-2821(99)02417-0]. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Minnesota, Dept Phys, Duluth, MN 55812 USA. So Methodist Univ, Dept Phys, Dallas, TX 75275 USA. RP Brodsky, SJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 66 TC 38 Z9 38 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054506 DI 10.1103/PhysRevD.60.054506 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200056 ER PT J AU Duncan, A Eichten, E Roskies, R Thacker, H AF Duncan, A Eichten, E Roskies, R Thacker, H TI Loop representations of the quark determinant in lattice QCD SO PHYSICAL REVIEW D LA English DT Article AB The modeling of the ultraviolet contributions to the quark determinant in lattice QCD in terms of a small number of Wilson loops is examined. Complete Dirac spectra are obtained for sizable ensembles of SU(3) gauge fields at beta=5.7 on 6(4), 8(4) and 10(4) lattices allowing for the first time a detailed study of the volume dependence of the effective loop action generating the quark determinant. The connection to the hopping parameter expansion is examined in the heavy quark Limit. We compare the efficiency and accuracy of Various methods-specifically, Lanczos versus stochastic approaches-for extracting the quark determinant on an ensemble of configurations. [S0556-2821(99)06515-7]. C1 Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. Fermilab, Batavia, IL 60510 USA. Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA. RP Duncan, A (reprint author), Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. NR 15 TC 13 Z9 13 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054505 DI 10.1103/PhysRevD.60.054505 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200055 ER PT J AU Isgur, N AF Isgur, N TI Beyond the adiabatic approximation: The impact of thresholds on the hadronic spectrum SO PHYSICAL REVIEW D LA English DT Article ID ZWEIG-IIZUKA RULE; RELATIVIZED QUARK-MODEL; DECAY; BARYONS; CHROMODYNAMICS; CHARMONIUM; MESONS; LOOPS AB In the adiabatic approximation, most of the effects of q (q) over bar loops on spectroscopy can be absorbed into a static interquark potential. I develop a formalism which can be used to treat the residual nonadiabatic effects associated with the presence of nearby hadronic thresholds for heavy quarks. I then define a potential which includes additional high energy corrections to the adiabatic limit which would be present for finite quark masses. This "improved" potential allows a systematic low energy expansion of the impact of thresholds on hadronic spectra. [S0556-2821(99)06315-8]. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 37 TC 126 Z9 127 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054013 DI 10.1103/PhysRevD.59.034013 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200031 ER PT J AU Jalilian-Marian, J Wang, XN AF Jalilian-Marian, J Wang, XN TI Small x gluons in nuclei and hadrons SO PHYSICAL REVIEW D LA English DT Article ID DISTRIBUTIONS; RECOMBINATION; SCATTERING; QCD AB We numerically study the effects of a high gluon density at small x on the evolution of the gluon distribution function in both hadrons and nuclei. Using a newly derived, Wilson renormalization group-based evolution equation which includes n to 1 gluon ladder fusion, we find a significant reduction in the nuclear gluon distribution function for large nuclei at zero impact parameter at energies relevant for BNL RHIC and CERN LHC experiments. [S0556-2821(99)05615-5]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Jalilian-Marian, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 35 TC 19 Z9 19 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054016 DI 10.1103/PhysRevD.60.054016 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200034 ER PT J AU Page, PR AF Page, PR TI Interpretation of D(2637) from heavy quark symmetry SO PHYSICAL REVIEW D LA English DT Article ID MESONS; SPECTROSCOPY; DECAYS; MODEL AB We demonstrate from heavy quark symmetry that the width of D(2637) claimed by the DELPHI Collaboration is inconsistent with any bound state with one charm quark predicted in the D(2637) mass region, except possibly D-3*, D-2jq (=) (5/2) or D'. The former two possibilities are favored by heavy quark mass relations. [S0556-2821(99)06117-2]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Page, PR (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM prp@lanl.gov RI Page, Philip/L-1885-2015 OI Page, Philip/0000-0002-2201-6703 NR 22 TC 13 Z9 13 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 057501 DI 10.1103/PhysRevD.60.057501 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200072 ER PT J AU Soffer, A AF Soffer, A TI Discrete ambiguities in the measurement of the weak phase gamma SO PHYSICAL REVIEW D LA English DT Article ID CP-VIOLATION; B-DECAYS; ASYMMETRIES; PHYSICS; MODES AB Several methods have been devised for measuring the weak phase gamma using decays of the type B-->DK. It is shown that these and other direct CP-violation measurements suffer from discrete ambiguity which is at least 8-fold. Combining two measurement methods helps reduce-the ambiguity and the experimental error. The measurement sensitivity and new physics discovery potential are estimated using a full Monte Carlo detector simulation with realistic background estimates, giving particular consideration to ambiguities. [S0556-2821(99)03117-3]. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA. RP Soffer, A (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 22 TC 22 Z9 22 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 054032 DI 10.1103/PhysRevD.60.054032 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200050 ER PT J AU Suzuki, M AF Suzuki, M TI Large final-state interaction in the 0(-)0(-) decays of J/psi SO PHYSICAL REVIEW D LA English DT Article ID PION FORM-FACTOR; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES AB In view of important implications in B decay, the 0(-)0(-) decay modes of J/psi are analyzed with broken flavor SU(3) symmetry in search of long-distance final-state interactions. If we impose one mild theoretical constraint on the electromagnetic form factors, we find that a large phase difference of final-state interactions is strongly favored between the one-photon and the gluon decay amplitudes. The measurement of e(+)e(-)-->y-->pi(+)pi(-) and e(+)e(-)-->gamma-->K+K- off the J/psi peak can settle the issue without recourse to theory. [S0556-2821(99)50615-2]. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Suzuki, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 11 TC 38 Z9 40 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1999 VL 60 IS 5 AR 051501 DI 10.1103/PhysRevD.60.051501 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 234DX UT WOS:000082470200003 ER PT J AU Vorobieff, P Ecke, RE AF Vorobieff, P Ecke, RE TI Cylinder wakes in flowing soap films SO PHYSICAL REVIEW E LA English DT Article ID VORTICITY; LAMINAR AB We present an experimental characterization of cylinder wakes in flowing soap films. From instantaneous velocity and thickness fields, we find the vortex-shedding frequency, mean-flow velocity, and mean-film thickness. Using the empirical relationship between the Reynolds and Strouhal numbers obtained for cylinder wakes in three dimensions, we estimate the effective soap-film viscosity and its dependence on film thickness. We also compare the decay of vorticity with that in a simple Rankine vortex model with a dissipative term to account for air drag. [S1063-651X(99)05509-9]. C1 Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Dynam Experimentat Grp, Los Alamos, NM 87545 USA. RP Vorobieff, P (reprint author), Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA. RI Vorobieff, Peter/B-3376-2011; OI Vorobieff, Peter/0000-0003-0631-7263; Ecke, Robert/0000-0001-7772-5876 NR 20 TC 27 Z9 27 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1999 VL 60 IS 3 BP 2953 EP 2956 DI 10.1103/PhysRevE.60.2953 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 239PH UT WOS:000082778200069 PM 11970100 ER PT J AU Donati, C Glotzer, SC Poole, PH Kob, W Plimpton, SJ AF Donati, C Glotzer, SC Poole, PH Kob, W Plimpton, SJ TI Spatial correlations of mobility and immobility in a glass-forming Lennard-Jones liquid SO PHYSICAL REVIEW E LA English DT Article ID MOLECULAR-DYNAMICS SIMULATION; HIGHLY SUPERCOOLED LIQUIDS; LONG-LIVED STRUCTURES; TRANSITION TEMPERATURE; COOPERATIVE MOTION; BETA-RELAXATION; POLYMER SURFACE; O-TERPHENYL; T-G; DIFFUSION AB Using extensive molecular dynamics simulations of an equilibrium, glass-forming Lennard-Jones mixture, we characterize in detail the local atomic motions. We show that spatial correlations exist among particles undergoing extremely large ("mobile") or extremely small:("immobile") displacements over a suitably chosen time interval. The immobile particles form the cores of relatively compact clusters, while the mobile particles move cooperatively and form quasi-one-dimensional stringlike clusters. The strength and length scale of the correlations between mobile particles are found to grow strongly with decreasing temperature, and the mean cluster size appears to diverge near the mode-coupling critical; temperature. We show that these correlations in the particle displacements are related to equilibrium fluctuations in the local potential energy and local composition. [S1063-651X(99)06309-6]. C1 NIST, Div Polymers, Gaithersburg, MD 20899 USA. NIST, Ctr Theoret & Computat Mat Sci, Gaithersburg, MD 20899 USA. Univ Western Ontario, Dept Appl Math, London, ON N6A 5B7, Canada. Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Sandia Natl Labs, Parallel Computat Sci Dept, Albuquerque, NM 87185 USA. RP Glotzer, SC (reprint author), NIST, Div Polymers, Gaithersburg, MD 20899 USA. RI Poole, Peter/C-7943-2009; Donati, Claudio/J-5180-2012; Kob, Walter/L-7010-2013; OI Poole, Peter/0000-0001-5985-0585; Kob, Walter/0000-0001-7405-2178; Donati, Claudio/0000-0001-8688-1651 NR 70 TC 359 Z9 361 U1 1 U2 48 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1999 VL 60 IS 3 BP 3107 EP 3119 DI 10.1103/PhysRevE.60.3107 PG 13 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 239PH UT WOS:000082778200087 PM 11970118 ER PT J AU Zhidkov, AG Sasaki, A Tajima, T Auguste, T D'Olivera, P Hulin, S Monot, P Faenov, AY Pikuz, TA Skobelev, IY AF Zhidkov, AG Sasaki, A Tajima, T Auguste, T D'Olivera, P Hulin, S Monot, P Faenov, AY Pikuz, TA Skobelev, IY TI Direct spectroscopic observation of multiple-charged-ion acceleration by an intense femtosecond-pulse laser SO PHYSICAL REVIEW E LA English DT Article ID SOLID-DENSITY TARGETS; SIMULATIONS; ABSORPTION; PLASMAS AB We have observed evidence of the emission of energetic He-and H-like ions of fluorine more than 1 MeV produced via the optical field ionization (OFI) from a solid target irradiated by an intense I = (2-4) x 10(18) W/cm(2) (60 fs, lambda = 800 nm), obliquely incident p-polarized pulse laser. The measured blue wing of He-alpha, He-beta, and Ly(alpha) lines of fluorine shows a feature of the Doppler-shifted spectrum due to the self-similar ion expansion dominated by superthermal electrons with the temperature T(h)similar to 100 keV. Using a collisional particle-in-cell simulation, which incorporates the nonlocal-thermodynamic-equilibrium ionization including, OFI, we have obtained the plasma temperature, line shape, and maximal energy of accelerated ions, which agree well with those determined from the experimental spectra. The red wing of ion spectra gives the temperature of bulk plasma electrons. [S1063-651X(99)05009-6]. C1 JAERI, Adv Photon Res Ctr, Neyagawa, Osaka 572, Japan. CENS, CEA, DRECAM, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France. VNIIFTRI, Multicharged Ions Spectra Data Ctr, Mendeleyevsk 141570, Moscow Region, Russia. RP Lawrence Livermore Natl Lab, L-441, Livermore, CA 94551 USA. RI Sasaki, Akira/J-8158-2016 NR 24 TC 60 Z9 61 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1999 VL 60 IS 3 BP 3273 EP 3278 DI 10.1103/PhysRevE.60.3273 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 239PH UT WOS:000082778200108 PM 11970139 ER PT J AU Zhang, DS Wei, GW Kouri, DJ Hoffman, DK Gorman, M Palacios, A Gunaratne, GH AF Zhang, DS Wei, GW Kouri, DJ Hoffman, DK Gorman, M Palacios, A Gunaratne, GH TI Integrating the Kuramoto-Sivashinsky equation in polar coordinates: Application of the distributed approximating functional approach SO PHYSICAL REVIEW E LA English DT Article ID FOKKER-PLANCK EQUATION; CELLULAR FLAMES; PATTERN-FORMATION; BURGERS-EQUATION; PROPAGATION; TRANSITION; DERIVATION; DYNAMICS; LAMINAR; STATES AB An algorithm is presented to integrate nonlinear partial differential equations, which is particularly useful when accurate estimation of spatial derivatives is required. It is based on an analytic approximation method, referred to as distributed approximating functionals (DAF's), which can be used to estimate a function and a finite number,of derivatives with a specified accuracy. As an application, the Kuramoto-Sivashinsky (KS) equation is integrated in polar coordinates. Its integration requires accurate estimation of spatial derivatives, particularly close to the origin. Several stationary and nonstationary solutions of the KS equation are presented, and compared with analogous states observed in the combustion front of a circular burner. A two-ring, nonuniform counter-rotating state has been obtained in a KS model simulation of such a burner. [S1063-651X(99)02409-5]. C1 Univ Houston, Dept Chem, Houston, TX 77204 USA. Univ Houston, Dept Phys, Houston, TX 77204 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Inst Fundamental Studies, Kandy, Sri Lanka. RP Zhang, DS (reprint author), Univ Houston, Dept Chem, Univ Pk, Houston, TX 77204 USA. RI Wei, Guowei /E-1852-2011 NR 40 TC 8 Z9 8 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1999 VL 60 IS 3 BP 3353 EP 3360 DI 10.1103/PhysRevE.60.3353 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 239PH UT WOS:000082778200118 PM 11970149 ER PT J AU Chitanvis, SM AF Chitanvis, SM TI Mesoscopic theory of the viscoelasticity of polymers SO PHYSICAL REVIEW E LA English DT Article AB We have advanced our previous static theory of polymer entanglement involving an extended Cahn-Hilliard functional, to include time-dependent dynamics. We go beyond the Gaussian approximation, to the one-loop level, to compute the frequency dependent storage and loss moduli of the system. The four parameters in our theory are obtained by fitting to available experimental data on polystyrene melts of various chain lengths. This provides a physical representation of the parameters in terms of the chain length of the system. It is shown that the parameters chosen describe the crossover from an unentangled to an entangled state. The crossover is characterized by a dramatic increase in a time scale appearing in the theory, analogous to critical slowing down in phase transition theory. This result should stimulate more detailed experiments in this regime to test this concept. [S1063-651X(99)07809-5]. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Chitanvis, SM (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 11 TC 2 Z9 2 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1999 VL 60 IS 3 BP 3432 EP 3435 DI 10.1103/PhysRevE.60.3432 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 239PH UT WOS:000082778200135 PM 11970166 ER PT J AU Beach, RJ AF Beach, RJ TI A representation of the electromagnetic field in the presence of curvature SO PHYSICS ESSAYS LA English DT Article DE electromagnetism; gravity AB Classical treatments of electromagnetism in the presence of a gravitational field generally consist of embedding Maxwell's equations into the metrical continuum by writing them in a covariant form. Except for the coupling through the energy-momentum tensor, this treatment gives the electromagnetic field equations an existence that is distinct from and independent of that of the gravitational field equations of general relativity. Here an alternative formulation is presented in which electromagnetic fields along with their sources are described in terms of the metric tensor g(mu nu) and a continuous four-component vector field u(lambda). In the presence of ponderable mass, the continuous four-component vector field u(lambda) is interpreted as the ordinary 4-velocity describing the mass's motion. Because the proposed equations describing the electromagnetic field differ from the classical Maxwell equations, their ability to describe classical physics is shown by direct calculation. This is done using Einstein's classical gravitational field equations along with an energy momentum tensor constructed using the proposed electromagnetic field equations. As an example, the asymptotic behavior of the presented equations is investigated under the restriction of axial symmetry. In this case, the equations lead naturally to the expected asymptotic descriptions of the gravitational and electromagnetic fields of a point charge superimposed on a magnetic dipole. Finally, the description of an electromagnetic plane wave in terms of the dynamical variables (g(mu nu), u(lambda)) in the weak field limit is presented. C1 Lawrence Livermore Natl Labs, Livermore, CA 94551 USA. RP Beach, RJ (reprint author), Lawrence Livermore Natl Labs, L-482,POB 808, Livermore, CA 94551 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU PHYSICS ESSAYS PUBLICATION PI HULL PA C/O ALFT INC, 189 DEVEAULT ST, UNIT NO. 7, HULL, PQ J8Z1S7, CANADA SN 0836-1398 J9 PHYS ESSAYS JI Phys. Essays PD SEP PY 1999 VL 12 IS 3 BP 457 EP 467 PG 11 WC Physics, Multidisciplinary SC Physics GA 348LR UT WOS:000088986700008 ER PT J AU Atsavapranee, P AF Atsavapranee, P TI Gallery of fluid motion - Abstracts SO PHYSICS OF FLUIDS LA English DT Article ID GRANULAR LAYERS; TRANSITION; PATTERNS; GASES C1 Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA. Univ Nacl Autonoma Mexico, Fac Ciencias, Mexico City 04510, DF, Mexico. Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Mexico City 04510, DF, Mexico. Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA. Georgetown Univ, Washington, DC 20057 USA. So Methodist Univ, Dallas, TX 75275 USA. USAF, Res Lab, Wright Patterson AFB, OH 45433 USA. Innovat Sci Solut Inc, Dayton, OH USA. Univ Maryland, College Pk, MD 20742 USA. Hebrew Univ Jerusalem, Jerusalem, Israel. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. ETH Zurich, Zurich, Switzerland. CSCS Manno, Manno, Switzerland. Univ Bristol, Sch Math, Bristol BS8 1TW, Avon, England. Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 9EW, England. Univ Aix Marseille, CNRS, IRPHE, Aix En Provence, France. CUNY City Coll, Levich Inst, New York, NY 10031 USA. RP Atsavapranee, P (reprint author), Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA. NR 18 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD SEP PY 1999 VL 11 IS 9 BP S2 EP S14 PG 13 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 224NW UT WOS:000081906000001 ER PT J AU Redi, MH Mynick, HE Suewattana, M White, RB Zarnstorff, MC AF Redi, MH Mynick, HE Suewattana, M White, RB Zarnstorff, MC TI Energetic particle transport in compact quasi-axisymmetric stellarators SO PHYSICS OF PLASMAS LA English DT Article ID THERMONUCLEAR EXPERIMENTAL REACTOR; N MAGNETIC PERTURBATIONS; RIPPLE LOSS; ALPHA-PARTICLES; TOKAMAK; CONFINEMENT; IONS; TFTR; PLASMAS; SIMULATIONS AB Hamiltonian coordinate, guiding center code calculations of the confinement of suprathermal ions in quasi-axisymmetric stellarator (QAS) designs have been carried out to evaluate the attractiveness of compact configurations which are optimized for ballooning stability. A new stellarator particle following code is used to predict the confinement of thermal and neutral beam ions in a small experiment with R=145 cm, B=1-2 T and for alpha particles in a reactor size device. As for tokamaks, collisional pitch angle scattering drives ions into ripple wells and stochastic field regions, where they are quickly lost. In contrast, however, such losses are enhanced in QAS so that high edge poloidal flux has limited value in improving ion confinement. The necessity for reduced stellarator ripple fields is emphasized. (C) 1999 American Institute of Physics. [S1070-664X(99)00409-7]. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08540 USA. RP Redi, MH (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08540 USA. RI White, Roscoe/D-1773-2013 OI White, Roscoe/0000-0002-4239-2685 NR 47 TC 4 Z9 4 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1999 VL 6 IS 9 BP 3509 EP 3520 DI 10.1063/1.873611 PG 12 WC Physics, Fluids & Plasmas SC Physics GA 228CC UT WOS:000082117800013 ER PT J AU Deeney, C Coverdale, CA Douglas, MR Struve, KW Spielman, RB Stygar, WA Peterson, DL Roderick, NF Haines, MG Beg, FN Ruiz-Camacho, J AF Deeney, C Coverdale, CA Douglas, MR Struve, KW Spielman, RB Stygar, WA Peterson, DL Roderick, NF Haines, MG Beg, FN Ruiz-Camacho, J TI Radiative properties of high wire number tungsten arrays with implosion times up to 250 ns SO PHYSICS OF PLASMAS LA English DT Article ID RAYLEIGH-TAYLOR INSTABILITY; Z-PINCH IMPLOSIONS; HEURISTIC MODEL; POWER; GENERATOR; SYMMETRY; DENSITY; RADIUS; LOADS AB High wire number, 25-mm-diameter tungsten wire arrays have been imploded on the 8-MA Saturn generator [R. B. Spielman , AIP Conference Proceeding 195, 3 (American Institute of Physics, Woodbury, NY 1989)], operating in a long-pulse mode. By varying the mass of the arrays from 710 to 6140 mu g/cm, implosion times of 130-250 ns have been obtained with implosion velocities of 50-25 cm/mu s, respectively. These Z-pinch implosions produced plasmas with millimeter diameters that radiated 600-800 kJ of x-rays, with powers of 20-49 TW; the corresponding pulsewidths were 19-7.5 ns, with risetimes ranging from 6.5 to 4.0 ns. These powers and pulsewidths are similar to those achieved with 50-ns implosion times on Saturn. Two-dimensional, radiation-magnetohydrodynamic calculations indicate that the imploding shells in these long implosion time experiments are comparable in width to those in the short-pulse cases. This can be due to lower initial perturbations. A heuristic wire array model suggests that the reduced perturbations, in the long-pulse cases, may be due to the individual wire merger occurring well before the acceleration of the shell. The experiments and modeling suggest that 150-200 ns implosion time Z-pinches could be employed for high-power, x-ray source applications. (C) 1999 American Institute of Physics. [S1070-664X(99)01808-X]. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ London Imperial Coll Sci Technol & Med, Plasma Phys Grp, London SW7 2BZ, England. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ New Mexico, Albuquerque, NM 87131 USA. RP Deeney, C (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 32 TC 46 Z9 51 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1999 VL 6 IS 9 BP 3576 EP 3586 DI 10.1063/1.873617 PG 11 WC Physics, Fluids & Plasmas SC Physics GA 228CC UT WOS:000082117800021 ER PT J AU Carlsten, BE AF Carlsten, BE TI Long-term, correlated emittance decrease in intense, high-brightness induction linacs SO PHYSICS OF PLASMAS LA English DT Article ID ELECTRON-BEAMS; PHOTOINJECTORS; COMPENSATION; GROWTH AB Simulations of high-brightness induction linacs often show a slow, long-term emittance decrease as the beam is matched from the electron gun into the linac. Superimposed on this long-term decrease are rapid emittance oscillations. These effects can be described in terms of correlations in the beam's radial phase space. The rapid emittance oscillations are due to transverse plasma oscillations, which stay nearly in phase for different radial positions within the beam. The initial emittance, just after the electron gun, is dominated by nonlinear focusing within the gun introduced by the anode exit hole. Due to the large space-charge force of an intense electron beam, the focusing of the beam through the matching section introduces an effective nonlinear force (from the change in the particles' potential energies) which counteracts the nonlinearities from the electron gun, leading to an average, long-term emittance decrease. Not all of the initial nonlinearity is removed by the matching procedure, and there are important consequences both for emittance measurements using solenoid focal length scans and for focusing the electron beam to a target. (C) 1999 American Institute of Physics. [S1070-664X(99)02909-2]. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Carlsten, BE (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 20 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1999 VL 6 IS 9 BP 3615 EP 3632 DI 10.1063/1.873621 PG 18 WC Physics, Fluids & Plasmas SC Physics GA 228CC UT WOS:000082117800025 ER PT J AU Chen, CP Pakter, R Davidson, RC AF Chen, CP Pakter, R Davidson, RC TI Phase space structure for matched intense charged-particle beams in periodic focusing transport systems SO PHYSICS OF PLASMAS LA English DT Article ID HALO FORMATION; FIELD; SIMULATION; NONUNIFORMITIES; EQUILIBRIUM; CHANNEL AB Test particle motion is analyzed analytically and numerically in the field configuration consisting of the equilibrium self-electric and self-magnetic fields of a well-matched, thin, continuous, intense charged-particle beam and an applied periodic focusing solenoidal magnetic field. The self fields are determined self-consistently, assuming the beam to have a uniform-density, rigid-rotor Vlasov equilibrium distribution. Using the Hamilton-Jacobi method, the betatron oscillations of test particles in the average self fields and applied focusing field are analyzed, and the nonlinear resonances induced by periodic modulations in the self fields and applied field are determined. The Poincare surface-of-section method is used to analyze numerically the phase-space structure for test particle motion outside the outermost envelope of the beam over a wide range of system parameters. For vacuum phase advance sigma(v)=80 degrees, it is found that the phase-space structure is almost entirely regular at low beam intensity (phase advance sigma greater than or similar to 70 degrees, say), whereas at moderate beam intensity (30 degrees less than or similar to sigma less than or similar to 70 degrees), nonlinear resonances appear, the most pronounced of which is the third-order primary nonlinear resonance. As the beam intensity is further increased (sigma less than or similar to 30 degrees), the widths of the higher-order nonlinear resonances increase, and the chaotic region of phase space increases in size. Furthermore, the many chaotic layers associated with the separatrices of the primary and secondary nonlinear resonances are still divided by the remaining invariant Kolmogorov-Arnold-Moser surfaces, even at very high beam intensities. The implications of the rich nonlinear resonance structure and chaotic particle motion found in the present test-particle studies are discussed in the context of halo formation. (C) 1999 American Institute of Physics. [S1070-664X(99)03409-6]. C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Chen, CP (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. NR 30 TC 7 Z9 7 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1999 VL 6 IS 9 BP 3647 EP 3657 DI 10.1063/1.873220 PG 11 WC Physics, Fluids & Plasmas SC Physics GA 228CC UT WOS:000082117800027 ER PT J AU Renk, TJ Tisone, GC Adams, RG Johnson, DJ Ruiz, CL Cooper, GW AF Renk, TJ Tisone, GC Adams, RG Johnson, DJ Ruiz, CL Cooper, GW TI Development of the laser evaporation ion source for lithium beam generation on the Particle Beam Fusion Accelerator (PBFA-II) SO PHYSICS OF PLASMAS LA English DT Article ID MAGNETICALLY INSULATED DIODES; INERTIAL CONFINEMENT FUSION; ANODE PLASMA SOURCE; PROTON-BEAMS; ELECTRON; VAPOR; TW; SPECTROSCOPY; IONIZATION AB The Laser Evaporation Ion Source (LEVIS) active lithium ion source has been developed for use on the focusing ion diode operated on the 10 TW Particle Beam Fusion Accelerator-II (PBFA-II) [J. P. VanDevender and D. L. Cook, Science 232, 831 (1986)] at Sandia National Laboratories. The source configuration consists of two laser pulses impinging on a heated (200 degrees C) thin-film LiAg layer on the anode surface. A short-pulse Nd:YAG laser creates a high-density vapor, which is then ionized by a long-pulse dye laser using the LIBORS (laser ionization based on resonant saturation) ionization method. Small-scale experiments determined that this dual laser-based approach can produce a source plasma of adequate density and confinement for acceleration and transport. Hardware modifications were undertaken to correct problems of premature impedance collapse and lack of beam lithium seen on previous PBFA-II experiments. As much as 85 kJ of Li is measured at the beam focus, but the source may not have been operating in a fully active (i.e., preformed) manner. Focusing performance appears superior to a passive LiF ion source operated on PBFA-II with the same magnetic field topology. (C) 1999 American Institute of Physics. [S1070-664X(99)02409-X]. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ New Mexico, Albuquerque, NM 87131 USA. RP Renk, TJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 51 TC 3 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1999 VL 6 IS 9 BP 3697 EP 3716 DI 10.1063/1.873629 PG 20 WC Physics, Fluids & Plasmas SC Physics GA 228CC UT WOS:000082117800034 ER PT J AU Michel, FC Li, H AF Michel, FC Li, H TI Electrodynamics of neutron stars SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID PARTICLE DYNAMICS; MAGNETIC-FIELD; CRAB-NEBULA; ION PLASMA; ACCELERATION; PULSARS; WINDS; WAVE AB Although the standard model for radio pulsars is a rotating magnetized neutron star and the vast majority (if not all) of pulsars are thought to have appreciable inclination angles between the spin and magnetization axes, most theoretical papers use simplified field models (e.g., aligned spin axis and magnetic dipole axis). Deutsch long ago gave exact tin vacuo) closed expressions for these inclined fields (modulo some typos and oversights), but these expressions were rather clumsy and required extensive hand processing to convert into ordinary functions of radius and angle for the electromagnetic fields. Moreover, these expressions were effectively written down by inspection (no details of the derivations given), which leaves the reader with little physical understanding of where the various electric and magnetic field components come from, particularly near the neutron star surface where many models assume the radio emission is generated. Finally, rather little analysis of what these fields implied was given beyond speculation that they could accelerate cosmic rays. As pulsar models become more sophisticated, it seems important that all researchers use a consistent set of underlying fields, which we hope to present here, as well as understand why these fields are present. It is also interesting to know what happens to charged particles from the star that move in these fields. Close to the star, ambient particles tend to simply E x B drift around the star with the same rotational velocity as the star itself. But far from the star, charged particles are accelerated away in the wave zone, as was first pointed out by Ostriker and Gunn. We expand their calculations using more general fields and elucidate the particle's dynamics accordingly. Very efficient acceleration is observed even for particles starting at > 10(3) light-cylinder distances. We also stress the effects of a non-zero radial magnetic field. Electrons are accelerated to much higher energies than, say, protons (not to the same energy as when the two cross a fixed potential drop). We pay particular attention to particles accelerated along the spin axis (particles that might be involved in jet formation). An important limitation to the present work is the neglect of collective radiation reaction. Single particle radiation reaction (e.g., Compton scattering of the wave flux) is not an accurate estimate of the forces on a plasma. We are working on remedying this limitation. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Rice Univ, Dept Space Phys & Astron, Houston, TX 77251 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Michel, FC (reprint author), Rice Univ, Dept Space Phys & Astron, POB 1892, Houston, TX 77251 USA. NR 37 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD SEP PY 1999 VL 318 IS 6 BP 228 EP 297 PG 70 WC Physics, Multidisciplinary SC Physics GA 238EB UT WOS:000082697000001 ER PT J AU Toki, W Panofsky, WKH AF Toki, W Panofsky, WKH TI Robert Fred Mozley - Obituary SO PHYSICS TODAY LA English DT Biographical-Item C1 Colorado State Univ, Ft Collins, CO 80523 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA USA. RP Toki, W (reprint author), Colorado State Univ, Ft Collins, CO 80523 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1999 VL 52 IS 9 BP 71 EP 72 DI 10.1063/1.2802822 PG 2 WC Physics, Multidisciplinary SC Physics GA 231PX UT WOS:000082319900020 ER PT J AU Baker, DA Gribble, RF AF Baker, DA Gribble, RF TI James Albert Phillips - Obituary SO PHYSICS TODAY LA English DT Biographical-Item C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Baker, DA (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1999 VL 52 IS 9 BP 72 EP 72 DI 10.1063/1.882829 PG 1 WC Physics, Multidisciplinary SC Physics GA 231PX UT WOS:000082319900021 ER PT J AU Edwards, NT Norby, RJ AF Edwards, NT Norby, RJ TI Below-ground respiratory responses of sugar maple and red maple saplings to atmospheric CO(2) enrichment and elevated air temperature SO PLANT AND SOIL LA English DT Article DE Acer rubrum; Acer saccharum; CO(2) x temperature interactions; open-top chamber; root respiration ID DECIDUOUS FOREST FLOOR; ROOT RESPIRATION; CARBON-DIOXIDE; PONDEROSA PINE; SOIL RESPIRATION; GROWTH; SEEDLINGS; NITROGEN; EVOLUTION; DROUGHT AB The research described in this paper represents a part of a much broader research project with the general objective of describing the effects of elevated [CO(2)] and temperature on tree growth, physiological processes, and ecosystem-level processes. The specific objective of this research was to examine the below-ground respiratory responses of sugar maple (Acer saccharum Marsh.) and red maple (Acer rubrum L.) seedlings to elevated atmospheric [CO(2)] and temperature. Red maple and sugar maple seedlings were planted in the ground in each of 12 open-top chambers and exposed from 1994 through 1997 to ambient air or air enriched with 30 Pa CO(2), in combination with ambient or elevated (+4 degrees C) air temperatures. Carbon dioxide efflux was measured around the base of the seedlings and from root-exclusion zones at intervals during 1995 and 1996 and early 1997. The CO(2) efflux rates averaged 0.4 mu mol CO(2) m(-2) s(-1) in the root-exclusion zones and 0.75 mu mol CO2 m(-2) s-1 around the base of the seedlings. Mineral soil respiration in root-exclusion zones averaged 12% higher in the high temperature treatments than at ambient temperature, but was not affected by CO(2) treatments. The fraction of total efflux attributable to root + rhizosphere respiration ranged from 14 to 61% in measurements made around red maple plants, and from 35 to 62% around sugar maple plants. Root respiration rates ranged from 0 to 0.94 mu mol CO(2) s(-1) m(-2) of soil surface in red maple and from 0 to 1.02 in sugar maple. In both 1995 and 1996 root respiration rates of red maple were highest in high-CO(2) treatments and lowest in high temperature treatments. Specific red maple root respiration rates of excised roots from near the soil surface in 1996 were also highest under CO(2) enrichment and lowest in high temperature treatments. In sugar maple the highest rates of CO2 efflux were from around the base of plants exposed to both high temperature and high-CO(2), even though specific respiration rates were lowest for this species under the high temperature and CO(2) enrichment regime. In both species, patterns of response to treatments were similar in root respiration and root mass, indicating that the root respiration responses were due in part to differences in root mass. The results underscore the need for separating the processes occurring in the roots from those in the forest floor and mineral soil in order to increase our understanding of the effects of global climate change on carbon sequestration and cycling in the below-ground systems of forests. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Edwards, NT (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM nte@ornl.gov RI Norby, Richard/C-1773-2012 OI Norby, Richard/0000-0002-0238-9828 NR 27 TC 56 Z9 61 U1 4 U2 20 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0032-079X J9 PLANT SOIL JI Plant Soil PD SEP PY 1999 VL 206 IS 1 BP 85 EP 97 PG 13 WC Agronomy; Plant Sciences; Soil Science SC Agriculture; Plant Sciences GA 194DK UT WOS:000080176700009 ER PT J AU Peterson, AG Ball, JT Luo, Y Field, CB Curtis, PS Griffin, KL Gunderson, CA Norby, RJ Tissue, DT Forstreuter, M Rey, A Vogel, CS AF Peterson, AG Ball, JT Luo, Y Field, CB Curtis, PS Griffin, KL Gunderson, CA Norby, RJ Tissue, DT Forstreuter, M Rey, A Vogel, CS TI Quantifying the response of photosynthesis to changes in leaf nitrogen content and leaf mass per area in plants grown under atmospheric CO2 enrichment SO PLANT CELL AND ENVIRONMENT LA English DT Article DE carbon dioxide; leaf nitrogen; photosynthesis; structural equation model ID ELEVATED CARBON-DIOXIDE; OPEN-TOP CHAMBERS; GAS-EXCHANGE; C-3 PLANTS; LEAVES; ACCLIMATION; TREES; TEMPERATURE; MODEL; FIELD AB Previous modelling exercises and conceptual arguments have predicted that a reduction in biochemical capacity for photosynthesis (A(area)) at elevated CO2 may be compensated by an increase in mesophyll tissue growth if the total amount of photosynthetic machinery per unit leaf area is maintained (i.e. morphological upregulation). The model prediction was based on modelling photosynthesis as a function of leaf N per unit leaf area (N-area), where N-area = N-mass x LMA. Here, N-mass is percentage leaf N and is used to estimate biochemical capacity and LMA is leaf mass per unit leaf area and is an index of leaf morphology. To assess the relative importance of changes in biochemical capacity versus leaf morphology we need to control for multiple correlations that are known, or that are likely to exist between CO2 concentration, N-area, N-mass, LMA and A(area). Although this is impractical experimentally, we can control for these correlations statistically using systems of linear multiple-regression equations. We developed a linear model to partition the response of A(area), to elevated CO2 into components representing the independent and interactive effects of changes in indexes of biochemical capacity, leaf morphology and CO2 limitation of photosynthesis. The model was fitted to data from three pine and seven deciduous tree species grown in separate chamber-based field experiments. Photosynthetic enhancement at elevated CO2 due to morphological upregulation was negligible for most species. The response of A(area), in these species was dominated by the reduction in CO2 limitation occurring at higher CO2 concentration. However, some species displayed a significant reduction in potential photosynthesis at elevated CO2 due to an increase in LMA that was independent of any changes in N-area. This morphologically based inhibition of A(area) combined additively with a reduction in biochemical capacity to significantly offset the direct enhancement of A(area) caused by reduced CO2 limitation in two species. This offset was 100% for Acer rubrum, resulting in no met effect of elevated CO2 on A(area) for this species, and 44% for Betula pendula. This analysis shows that interactions between biochemical and morphological responses to elevated CO2 can have important effects on photosynthesis. C1 Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA. Univ Nevada, Desert Res Inst, Ctr Biol Sci, Reno, NV 89506 USA. Carnegie Inst Washington, Dept Plant Biol, Stanford, CA 94305 USA. Ohio State Univ, Dept Plant Biol, Columbus, OH 43210 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Texas Tech Univ, Dept Biol, Lubbock, TX 79409 USA. Tech Univ Berlin, Inst Ecol, D-14195 Berlin, Germany. Univ Edinburgh, IERM, Edinburgh EH9 3JU, Midlothian, Scotland. Univ Michigan, Biol Stn, Pellston, MI 49769 USA. RP Peterson, AG (reprint author), Columbia Univ, Lamont Doherty Earth Observ, 61 Route 9 W, Palisades, NY 10964 USA. RI Norby, Richard/C-1773-2012; Griffin, Kevin/B-2629-2013; Rey, Ana/F-5791-2016; Tissue, David/H-6596-2015 OI Norby, Richard/0000-0002-0238-9828; Griffin, Kevin/0000-0003-4124-3757; Rey, Ana/0000-0003-0394-101X; Tissue, David/0000-0002-8497-2047 NR 50 TC 25 Z9 26 U1 1 U2 24 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND SN 0140-7791 J9 PLANT CELL ENVIRON JI Plant Cell Environ. PD SEP PY 1999 VL 22 IS 9 BP 1109 EP 1119 DI 10.1046/j.1365-3040.1999.00489.x PG 11 WC Plant Sciences SC Plant Sciences GA 235HR UT WOS:000082536700006 ER PT J AU Kusama, Y Fu, GY Kramer, GJ Saigusa, M Oikawa, T Ozeki, T Moriyama, S Tchernychev, FV Nemoto, M Kondoh, T Hatae, T Tobita, K Kuriyama, M Cheng, CZ Kimura, H AF Kusama, Y Fu, GY Kramer, GJ Saigusa, M Oikawa, T Ozeki, T Moriyama, S Tchernychev, FV Nemoto, M Kondoh, T Hatae, T Tobita, K Kuriyama, M Cheng, CZ Kimura, H TI Destabilization of ellipticity-induced Alfven eigenmodes during ICRF heating and Stabilization by negative-ion-based neutral beam injection-in JT-60U SO PLASMA PHYSICS AND CONTROLLED FUSION LA English DT Article ID FUSION TEST REACTOR; MEV ENERGY-RANGE; TOROIDAL PLASMAS; TOKAMAK; INSTABILITIES; EXCITATION; BEHAVIOR; MODES; TFTR AB High-frequency modes in the 525-550 KHz range with toroidal mode numbers n = 3-7 were excited after the sawtooth crash during ion cyclotron range of frequency (ICRF) heating. Based on the stability analysis using the NOVA-K code, these modes were found to be consistent with ellipticity-induced Alfven eigenmodes (EAEs) excited in the EAE gap located at the q = 1 surface. A change in the safety factor after the sawtooth crash was essential for the excitation of EAEs in the core region of the plasma. The high-frequency modes were stabilized by the neutral beam injection at 350 keV using negative-ion-based neutral beam (NNB) injectors. Stability analysis using the NOVA-K code has shown that NNB-injected ions enhance the damping of the EAEs and tend to stabilize them. C1 Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 3110193, Japan. Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Ibaraki Univ, Hitachi, Ibaraki 3160033, Japan. AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. RP Kusama, Y (reprint author), Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 3110193, Japan. RI Cheng, Chio/K-1005-2014 NR 28 TC 4 Z9 4 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0741-3335 J9 PLASMA PHYS CONTR F JI Plasma Phys. Control. Fusion PD SEP PY 1999 VL 41 IS 9 BP 1167 EP 1177 DI 10.1088/0741-3335/41/9/308 PG 11 WC Physics, Fluids & Plasmas SC Physics GA 241WX UT WOS:000082907800009 ER PT J AU Pople, JA Hamley, IW Fairclough, JPA Ryan, AJ Hill, G Price, C AF Pople, JA Hamley, IW Fairclough, JPA Ryan, AJ Hill, G Price, C TI A shear induced transition of lamellar alignment in a concentrated diblock copolymer solution SO POLYMER LA English DT Article DE diblock copolymer solution; ordered phase; SAXS ID AMPLITUDE OSCILLATORY SHEAR; BLOCK-COPOLYMER; POLYSTYRENE-POLYISOPRENE; ORIENTATION; FLOW; MICROSTRUCTURE; EVOLUTION; RHEOLOGY AB The effect of shear on the alignment of the lamellar phase in a concentrated aqueous salt solution of a poly(oxyethylene) and poly(oxybutylene) diblock copolymer is investigated in situ using small-angle X-ray scattering (SAXS). The alignment of the lamellae is deduced from the anisotropy of the scattering patterns. It is found that the orientation of the lamellae with respect to the shear direction alters with an increase in the shear rate: the lamellae are oriented transverse to the shear direction at low shear rates, and perpendicular to the vorticity direction at high shear rates. The transition between the two lamellar alignments occurs at a critical shear rate in the range: 10 s(-1) < gamma(c) < 100 s(-1). (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England. Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England. SERC, Daresbury Lab, CLRC, Warrington WA4 4AD, Cheshire, England. Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England. RP Pople, JA (reprint author), Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, MS 99,POB 4349, Stanford, CA 94309 USA. RI Hamley, Ian/D-1643-2009; Fairclough, Patrick/B-1419-2012; Ryan, Anthony/D-9294-2016 OI Hamley, Ian/0000-0002-4549-0926; Fairclough, Patrick/0000-0002-1675-5219; Ryan, Anthony/0000-0001-7737-0526 NR 23 TC 22 Z9 22 U1 1 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0032-3861 J9 POLYMER JI Polymer PD SEP PY 1999 VL 40 IS 20 BP 5709 EP 5714 DI 10.1016/S0032-3861(98)00805-2 PG 6 WC Polymer Science SC Polymer Science GA 208ZW UT WOS:000081023400026 ER PT J AU Narasimhan, TN AF Narasimhan, TN TI Fourier's heat conduction equation: History, influence, and connections (Reprinted from Reviews of Geophysics vol 37, pg 151-172, 1999) SO PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES LA English DT Reprint DE Fourier; diffusion; history AB The equation describing the conduction of heat in solids has, over the past two centuries, proved to be a powerful tool for analyzing the dynamic motion of heat as: well as for solving an enormous array of diffusion-type problems in physical sciences, biological sciences, earth sciences, and social sciences. This equation was formulated at the beginning of the nineteenth century by one of the most gifted scholars of modern science, Joseph Fourier of France. A study of the historical context in which Fourier made his remarkable contribution and the subsequent impact his work:has had on the development of modern science is as fascinating as it is educational. This paper is an attempt to present a picture of how certain ideas initially led to Fourier's development of the heat equation and how, subsequently, Fourier's work directly influenced and inspired others to use the heat diffusion model to describe other dynamic physical systems. Conversely, others concerned with the study of random processes found that the equations governing such random processes reduced, in the limit, to Fourier's equation of heat diffusion. In the process of developing the flow of ideas, the paper also presents, to the extent possible, an account of the history and personalities involved. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Mat Sci & Mineral Engn, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. RP Narasimhan, TN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Mat Sci & Mineral Engn, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. NR 61 TC 4 Z9 4 U1 1 U2 2 PU INDIAN ACADEMY SCIENCES PI BANGALORE PA P B 8005 C V RAMAN AVENUE, BANGALORE 560 080, INDIA SN 0253-4126 J9 P INDIAN AS-EARTH JI Proc. Indian Acad. Sci.-Earth Planet. Sci PD SEP PY 1999 VL 108 IS 3 BP 117 EP 148 PG 32 WC Geosciences, Multidisciplinary SC Geology GA 251YG UT WOS:000083473500001 ER PT J AU Rose, DH Hasoon, FS Dhere, RG Albin, DS Ribelin, RM Li, XS Mahathongdy, Y Gessert, TA Sheldon, P AF Rose, DH Hasoon, FS Dhere, RG Albin, DS Ribelin, RM Li, XS Mahathongdy, Y Gessert, TA Sheldon, P TI Fabrication procedures and process sensitivities for CdS/CdTe solar cells SO PROGRESS IN PHOTOVOLTAICS LA English DT Article ID DEPOSITION TECHNIQUES; CDTE; FILMS; INTERFACE; CONTACT AB This paper details the laboratory processes used to fabricate CdS/CdTe solar cells at the National Renewable Energy Laboratory. The basic fabrication technique includes low-pressure chemical vapor deposited SnO2, chemical-bath deposited CdS, close-spaced sublimated CdTe, solution-CdCl2 treatment, and an acid-contact etch, followed by application of a doped-graphite paste. This paper also describes the results of a reproducibility study in which cells were produced by multiple operators with an aver age AM1-5 efficiency of 12.6%. And finally, this paper discusses process sensitivities and alternative cell fabrication procedures and reports fabrication of a cell with an AM1-5 efficiency of 15.4%. Copyright (C) 1999 John Wiley & Sons, Ltd. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Rose, DH (reprint author), Solar Cells Inc, 1702 N Westwood Ave, Toledo, OH 43607 USA. NR 30 TC 152 Z9 153 U1 5 U2 45 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 1062-7995 J9 PROG PHOTOVOLTAICS JI Prog. Photovoltaics PD SEP-OCT PY 1999 VL 7 IS 5 BP 331 EP 340 DI 10.1002/(SICI)1099-159X(199909/10)7:5<331::AID-PIP257>3.0.CO;2-P PG 10 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 255JW UT WOS:000083666600001 ER PT J AU Gatley, SJ Volkow, ND Gifford, AN Fowler, JS Dewey, SL Ding, YS Logan, J AF Gatley, SJ Volkow, ND Gifford, AN Fowler, JS Dewey, SL Ding, YS Logan, J TI Dopamine transporter occupancy after intravenous doses of cocaine and methylphenidate in mice and humans SO PSYCHOPHARMACOLOGY LA English DT Article DE cocaine; methylphenidate; dopamine transporter ID DISCRIMINATIVE STIMULUS PROPERTIES; LOCOMOTOR-ACTIVITY; NONHUMAN-PRIMATES; SYNAPTIC VESICLES; NUCLEUS-ACCUMBENS; PLACE PREFERENCE; CROSS-TOLERANCE; BINDING-SITES; RHESUS-MONKEY; C57BL/6J MICE AB Objectives: Recent studies using positron emission tomography (PET) have established the relationship between an intravenous dose of cocaine and the percentage occupancy of the dopamine transporter in humans, and have documented the requirement of more than 50% occupancy for perception of the "high". The present experiments were conducted to examine dose-occupancy and dose-effect relationships in mice for cocaine and also for methylphenidate, a dopamine uptake blocker used in pediatric psychiatry, Methods: Percentage occupancies of the dopamine transporter by cocaine and methylphenidate were estimated after intravenous injection in mice from the displacement of in vivo binding of [H-3]cocaine from the striatum. Locomotor activity was measured in a photocell apparatus. Results. The relationship between drug doses (milligrams of hydrochloride salt per kilogram body weight) and percentage occupancy of the dopamine transporter was indistinguishable for cocaine and methylphenidate, and corresponded to about 50% occupancy at 0.25 mg/kg and about 80% at 1 mg/kg. This was similar to the relationship between drug dose and transporter occupancy, previously measured in human and baboons using [C-11]cocaine or [C-11]D-threo-methylphenidate and PET. Methylphenidate increased locomotor activity in the mice substantially more than cocaine at the same dose and the same degree of dopamine-transporter receptor occupancy. Conclusions: The range of dopamine-transporter occupancy required for behavioral activation in the mice was thus similar to that previously reported for experience of a cocaine- or methylphenidate-induced "high" in human subjects. Our results are consistent with other studies in which both cocaine and methylphenidate were evaluated in animal behavioral assays and were found to have Very similar psychopharmacological properties. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. SUNY Stony Brook, Dept Psychiat, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Gatley, SJ (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. FU NIDA NIH HHS [DA 09490-01] NR 81 TC 89 Z9 92 U1 3 U2 4 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0033-3158 J9 PSYCHOPHARMACOLOGY JI Psychopharmacology PD SEP PY 1999 VL 146 IS 1 BP 93 EP 100 DI 10.1007/s002130051093 PG 8 WC Neurosciences; Pharmacology & Pharmacy; Psychiatry SC Neurosciences & Neurology; Pharmacology & Pharmacy; Psychiatry GA 236WL UT WOS:000082622200013 PM 10485970 ER PT J AU Radivoyevitch, T Ramsey, MJ Tucker, JD AF Radivoyevitch, T Ramsey, MJ Tucker, JD TI Estimation of the target stem-cell population size in chronic myeloid leukemogenesis SO RADIATION AND ENVIRONMENTAL BIOPHYSICS LA English DT Article DE cancer risk modelling; chronic myeloid leukemia (CML) incidence CML target stem cells; genome translocation; low-dose exposure; radiation-induced CML ID TRANSGENIC MICE; LEUKEMIA; CHROMOSOME; GENE AB Estimation of the number of hematopoietic stem cells capable of causing chronic myeloid leukemia (CML) is relevant to the development of biologically based risk models of radiation-induced CML. Through a comparison of the age structure of CML incidence data from the Surveillance, Epidemiology, and End Results (SEER) Program and the age structure of chromosomal translocations found in healthy subjects, the number of CML target stem cells is estimated for individuals above 20 years of age. The estimation involves three steps. First, CML incidence among adults is fit to an exponentially increasing function of age. Next, assuming a relatively short waiting time distribution between BCR-ABL induction and the appearance of CML, an exponential age function with rate constants fixed to the values found for CML is fitted to the translocation data. Finally, assuming that translocations are equally likely to occur between any two points in the genome, the parameter estimates found in the first two steps are used to estimate the number of target stem cells for CML. The population-averaged estimates of this number are found to be 1.86x10(8) for men and 1.21x10(8) for women; the 95% confidence intervals of these estimates are (1.34x10(8), 2.50x10(8)) and (0.84x10(8), 1.83x10(8)), respectively. C1 Med Univ S Carolina, Dept Biometry & Epidemiol, Charleston, SC 29425 USA. Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. RP Radivoyevitch, T (reprint author), Med Univ S Carolina, Dept Biometry & Epidemiol, Charleston, SC 29425 USA. NR 19 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0301-634X J9 RADIAT ENVIRON BIOPH JI Radiat. Environ. Biophys. PD SEP PY 1999 VL 38 IS 3 BP 201 EP 206 DI 10.1007/s004110050156 PG 6 WC Biology; Biophysics; Environmental Sciences; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Environmental Sciences & Ecology; Radiology, Nuclear Medicine & Medical Imaging GA 245HG UT WOS:000083100300006 PM 10525957 ER PT J AU Yun, W Lai, B Krasnoperova, AA Di Fabrizio, E Cai, Z Cerrina, F Chen, Z Gentili, M Gluskin, E AF Yun, W Lai, B Krasnoperova, AA Di Fabrizio, E Cai, Z Cerrina, F Chen, Z Gentili, M Gluskin, E TI Development of zone plates with a blazed profile for hard x-ray applications SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID FABRICATION; LITHOGRAPHY; GERMANIUM; SPECKLE AB A linear and a circular zone plate with a blazed zone profile (ZPBP) have been fabricated and characterized using synchrotron x rays. The ZPBPs have significantly improved performances in terms of focusing efficiency and the background near the focus compared to those of a zone plate with a square profile, of which the transmission function can be characterized by a binary square wave. In many respects and practical cases, an x-ray ZPBP may be used in a way analogous to an optical lens in the visible light region. In this article, the experimental characterization of the ZPBPs is presented and some special applications are discussed. (C) 1999 American Institute of Physics. [S0034-6748(99)01309-X]. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Univ Wisconsin, Dept Elect & Comp Engn, Ctr NanoTechnol, Madison, WI 53706 USA. CNR, Ist Elettron Stato Solido, I-00156 Rome, Italy. RP Yun, W (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 21 TC 41 Z9 41 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3537 EP 3541 DI 10.1063/1.1149956 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200005 ER PT J AU Cremer, JT Piestrup, MA Beguiristain, HR Gary, CK Pantell, RH Tatchyn, R AF Cremer, JT Piestrup, MA Beguiristain, HR Gary, CK Pantell, RH Tatchyn, R TI Cylindrical compound refractive x-ray lenses using plastic substrates SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB We have measured the intensity profile of x rays focused by compound refractive lenses (CRLs) fabricated using acrylic (Lucite) and polyethylene plastics. A linear array of closely spaced holes acts as multiple cylindrical lenses. The important parameters for this type of focusing are the focal length and absorption, and, for wavelengths shorter than 3 Angstrom, low atomic number plastics are suitable. We have experimentally demonstrated that we can achieve one-dimensional focusing for photon energies between 9 and 19.5 keV with focal lengths between 20 and 100 cm. For example, using 12 keV x rays we have achieved focal full width at half maximum linewidths down to 21 mu m at a distance of only 20 cm from the CRL. The x-ray source was a synchrotron emitter whose source size in the vertical dimension was 445 mu m. (C) 1999 American Institute of Physics. [S0034-6748(99)03209-8]. C1 Adelphi Technol Inc, Palo Alto, CA 94306 USA. Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. RP Cremer, JT (reprint author), Adelphi Technol Inc, Palo Alto, CA 94306 USA. NR 6 TC 31 Z9 32 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3545 EP 3548 DI 10.1063/1.1149957 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200007 ER PT J AU Margulies, L Kramer, MJ McCallum, RW Kycia, S Haeffner, DR Lang, JC Goldman, AI AF Margulies, L Kramer, MJ McCallum, RW Kycia, S Haeffner, DR Lang, JC Goldman, AI TI New high temperature furnace for structure refinement by powder diffraction in controlled atmospheres using synchrotron radiation SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID X-RAY; RIETVELD REFINEMENT; ACQUISITION AB A low thermal gradient furnace design is described which utilizes Debye-Scherrer geometry for performing high temperature x-ray powder diffraction with synchrotron radiation at medium and high energies (35-100 keV). The furnace has a maximum operating temperature of 1800 K with a variety of atmospheres including oxidizing, inert, and reducing. The capability for sample rotation, to ensure powder averaging, has been built into the design without compromising thermal stability or atmosphere control. The ability to perform high-resolution Rietveld refinement on data obtained at high temperatures has been demonstrated, and data collected on standard Al2O3 powder is presented. Time-resolved data on the orthorhombic to rhombohedral solid state phase transformation of SrCO3 is demonstrated using image plates. Rietveld refinable spectra, collected in as little as 8 s, opens the possibility of performing time-resolved structural refinements of phase transformations. (C) 1999 American Institute of Physics. [S0034-6748(99)00309-3]. C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Margulies, L (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. NR 16 TC 41 Z9 41 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3554 EP 3561 DI 10.1063/1.1149948 PG 8 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200009 ER PT J AU Wang, SG Brown, IG AF Wang, SG Brown, IG TI Unipolar arc simulation device SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID VACUUM AB We describe a simple laboratory device for establishing a vacuum arc plasma discharge that can serve to simulate a unipolar arc. The technique makes use of a triggered vacuum arc plasma gun to generate a plasma plume that in turn causes breakdown of a secondary discharge. The device is in fact a secondary vacuum arc discharge that is triggered by a primary vacuum arc discharge, with some of the features of the secondary plasma discharge having similarities with a unipolar arc configuration. Here we describe the experimental setup and outline how the device can be used for some areas of unipolar arc materials research. (C) 1999 American Institute of Physics. [S0034-6748(99)01409-4]. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Wang, SG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 16 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3583 EP 3585 DI 10.1063/1.1149963 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200014 ER PT J AU Grigull, S Foltyn, S Hollander, MG Evans, CR Nastasi, M AF Grigull, S Foltyn, S Hollander, MG Evans, CR Nastasi, M TI Setup for in situ x-ray diffraction and ion-channeling studies of ion-implantation effects in thin films SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID YTTRIA-STABILIZED ZIRCONIA; EVAPORATION; STRAIN; IRRADIATION; RADIATION; CRYSTAL; BEAM AB A novel setup is introduced that combines energy-dispersive x-ray diffraction and ion-channeling capabilities for damage studies on single-crystalline thin films irradiated with 100-720 keV heavy ions. Channeling measurements using 2 MeV He ions provide depth-resolved information on the damage buildup. The x-ray diffraction tool is used to measure damage-related lattice strain, and can provide information on bombardment-induced disorder complementary to the channeling technique. Data obtained during the implantation of 360 keV Ar2+ ions into a zirconia thin film illustrate the potential of the instrument. (C) 1999 American Institute of Physics. [S0034-6748(99)04209-4]. C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Grigull, S (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. NR 33 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3656 EP 3660 DI 10.1063/1.1149973 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200025 ER PT J AU Brown, S Milanovich, FP Kyle, K Myrick, ML AF Brown, S Milanovich, FP Kyle, K Myrick, ML TI Design of a cone-penetrometer-compatible probe and housing: The LLNL Raman probe SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB An integrated infinity-focused fiber optic probe designed for cone penetrometer and hand-held use and constructed at Lawrence Livermore National Laboratories is described and evaluated for performance. Throughput efficiency is calculated, distance dependence, background levels, and sensitivity to heterogeneity in samples is evaluated. Representative spectra are presented that make use of the major performance advantages of this probe, which are (a) background rejection, (b) low sample light fluences, (c) distant viewing, (d) sample penetration, and (e) sample averaging capability. (C) 1999 American Institute of Physics. [S0034-6748(99)00409-8]. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ S Carolina, Dept Biochem & Chem, Columbia, SC 29208 USA. Special Technol Lab, Santa Barbara, CA 93111 USA. RP Brown, S (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. OI Myrick, Michael/0000-0002-6905-0925 NR 13 TC 7 Z9 7 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1999 VL 70 IS 9 BP 3735 EP 3743 DI 10.1063/1.1149985 PG 9 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 231CK UT WOS:000082289200039 ER PT J AU Macosko, JC Pio, MS Tinoco, I Shin, YK AF Macosko, JC Pio, MS Tinoco, I Shin, YK TI A novel 5 ' displacement spin-labeling technique for electron paramagnetic resonance spectroscopy of RNA SO RNA-A PUBLICATION OF THE RNA SOCIETY LA English DT Article DE circular permutation; dipolar method; GMPS; long range distance; nucleic acids ID CONFORMATIONAL-CHANGES; TERTIARY STRUCTURE; ALPHA-HELIX; EPR; RECOGNITION; BACTERIORHODOPSIN; PROTEIN; COMPLEX; TOPOLOGY; SEQUENCE AB An RNA spin-labeling technique was developed using the well-characterized interaction between the HIV Rev peptide and the Rev response element (RRE) RNA as a model System. Spin-labeled RNA molecules were prepared by incorporating guanosine monophosphorothioate (GMPS) at the 5' end using T7 RNA polymerase and then covalently attaching a thiol-specific nitroxide spin label. Three different constructs of the RRE RNA were made by strategically displacing the 5' end within the native three-dimensional structure. Nitroxide-to-nitroxide distance measurements were made between the specifically bound RNA and peptide using electron paramagnetic resonance (EPR) spectroscopy. The dipolar EPR method can reliably measure distances up to 25 Angstrom, the calculation of which is derived from the 1/r(3) dependence of the broadening of EPR lines in motionally frozen samples. This RNA-labeling technique, dubbed 5' displacement spin labeling, extends the usefulness of the dipolar EPR method developed for analysis of protein structure. The advantage of this technique is that it is applicable to large RNA systems such as the ribosome, which are difficult to study by other structural methods. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Biol Struct, Phys Biosci Div, Berkeley, CA 94720 USA. RP Shin, YK (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. FU NIGMS NIH HHS [GM-10840, GM-51290] NR 29 TC 42 Z9 42 U1 2 U2 8 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 USA SN 1355-8382 J9 RNA JI RNA-Publ. RNA Soc. PD SEP PY 1999 VL 5 IS 9 BP 1158 EP 1166 DI 10.1017/S1355838299990830 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 233HP UT WOS:000082421700005 PM 10496217 ER PT J AU Kao, C Zheng, M Rudisser, S AF Kao, C Zheng, M Rudisser, S TI A simple and efficient method to reduce nontemplated nucleotide addition at the 3 ' terminus of RNAs transcribed by T7 RNA polymerase SO RNA-A PUBLICATION OF THE RNA SOCIETY LA English DT Article DE nontemplated nucleotide addition; nucleotide analog; T7 RNA polymerase; transcription ID IN-VITRO; INITIATION; TEMPLATES; OLIGONUCLEOTIDES; PROCESSIVITY AB DNA templates modified with C2'-methoxyls at the last two nucleotides of the 5' termini dramatically reduced nontemplated nucleotide addition by the T7 RNA polymerase from both single- and double-stranded DNA templates. This strategy was used to generate several different transcripts. Two of the transcripts were demonstrated by nuclear magnetic resonance spectroscopy to be unaffected in their sequence; Transcripts produced from the modified templates can be purified with greater ease and should,be useful in a number of applications. C1 Indiana Univ, Dept Biol, Bloomington, IN 47405 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA USA. RP Kao, C (reprint author), Indiana Univ, Dept Biol, 1001 E 3rd St, Bloomington, IN 47405 USA. FU NIGMS NIH HHS [GM10840] NR 24 TC 152 Z9 154 U1 2 U2 11 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 USA SN 1355-8382 J9 RNA JI RNA-Publ. RNA Soc. PD SEP PY 1999 VL 5 IS 9 BP 1268 EP 1272 DI 10.1017/S1355838299991033 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 233HP UT WOS:000082421700015 PM 10496227 ER PT J AU Borisov, YA Garrett, BC Feller, D AF Borisov, YA Garrett, BC Feller, D TI Ab initio study of the Wolff rearrangement of C6H4O intermediate in the gas phase SO RUSSIAN CHEMICAL BULLETIN LA English DT Article DE ab initio quantum-chemical calculations; Moller-Plesset perturbation theory; 1,2-ketocarbene C6H4O; intermediates in organic reactions; oxirene-like structure; ketene-like structure; molecular and electronic structure; frequencies of normal vibrations; Wolff rearrangement; activation energy ID OXIRENE; KETENE AB Ab initio calculations of the geometry and re-activity of 1,2-ketocarbene C6H4O as an intermediate in organic reactions were performed using the second-order Moller-Plesset (MP2) perturbation theory in the 6-311G* basis set. Only the singlet state of the intermediate was considered. An oxirene-like structure (6) with a six-membered ring and a ketene-like structure (5) with a five-membered ring were localized on the potential energy surface. Attempts to locate a quinone type structure characteristic of aliphatic ketocarbenes failed. The energy of structure 5 is similar to 70 kcal mol(-1) lower than that of structure 6. Harmonic frequencies and intensities of normal vibrations in the IR spectra of 6 and 5 were calculated. The activation energy of the Wolff rearrangement 6 --> 5 was estimated at 12.5 kcal mol(-1). The geometry of the transition state of this reaction resembles the quinone-like structure. C1 Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 117813, Russia. Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Borisov, YA (reprint author), Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, 28 Ul Vavilova, Moscow 117813, Russia. RI Garrett, Bruce/F-8516-2011 NR 22 TC 2 Z9 2 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA CONSULTANTS BUREAU, 233 SPRING ST, NEW YORK, NY 10013 USA SN 1066-5285 J9 RUSS CHEM B+ JI Russ. Chem. Bull. PD SEP PY 1999 VL 48 IS 9 BP 1642 EP 1646 DI 10.1007/BF02494806 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA 264DH UT WOS:000084164700006 ER PT J AU Volkow, ND Fowler, JS AF Volkow, ND Fowler, JS TI Mind and body II SO SCIENCES-NEW YORK LA English DT Letter C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Volkow, ND (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 USA SN 0036-861X J9 SCIENCES JI Sci.-New York PD SEP-OCT PY 1999 VL 39 IS 5 BP 46 EP 47 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 231KM UT WOS:000082307600019 ER PT J AU Kupferman, R Chorin, AJ AF Kupferman, R Chorin, AJ TI One-sided polarization and renormalization flow in the Kosterlitz-Thouless phase transition SO SIAM JOURNAL ON APPLIED MATHEMATICS LA English DT Article DE Kosterlitz-Thouless phase transition; Coulomb gas; renormalization; finite-size scaling ID DIMENSIONAL COULOMB GAS; 2-DIMENSIONAL XY-MODEL; CONSISTENT BOUNDARY-CONDITIONS; MONTE-CARLO ANALYSIS; PLANAR SPIN MODEL; EQUATIONS AB The renormalization group (RNG) analysis of the Kosterlitz-Thouless (KT) phase transition is a basic paradigm in statistical physics and a well-known success of the RNG approach. It was recently shown that the derivation of the RNG parameter flow for the KT problem rests on the assumption of one-sided polarization, which is implausible and cannot be derived from first principles. We extend this analysis by exhibiting simple self-consistent alternate assumptions that lead to different parameter flows. We then study the KT transition numerically and show that the properties of the transition are well described by the standard RNG analysis (up to some minor paradoxes). The reason for the success of the assumption of one-sided polarization remains unknown; the problem exemplifies the difficulties in the mathematical analysis of the RNG. Related issues in turbulence theory are pointed out. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Math, Berkeley, CA 94720 USA. RP Kupferman, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Math, 1 Cyclotron Rd,50A-2152, Berkeley, CA 94720 USA. NR 28 TC 1 Z9 1 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1399 J9 SIAM J APPL MATH JI SIAM J. Appl. Math. PD SEP 1 PY 1999 VL 59 IS 5 BP 1843 EP 1866 DI 10.1137/S0036139998339631 PG 24 WC Mathematics, Applied SC Mathematics GA 231LH UT WOS:000082310100017 ER PT J AU Olson, GL Cassel, DK AF Olson, GL Cassel, DK TI Bromide leaching on a Piedmont toposequence SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID HYDRODYNAMIC DISPERSION; LANDSCAPE POSITION; CLAY SOIL; TRANSPORT; WATER; ABSORPTION; EROSION AB Solute leaching on the field-scale is a poorly understood, complex process affected by local soil variation and landscape position. We hypothesized that Br ion leaching is a function of landscape position in a well-structured, clayey soil on a Piedmont toposequence that had been in pasture for the previous 30 yr, Dry KBr, mixed with sand at a ratio of 12 g sand to 1 g KBr, was surface-applied at a rate of 314 kg Br ha(-1) on 24 May 1994 along two transects and allowed to move into the-soil under natural rainfall conditions. Soil cores 0.90- and 2.00-m-long were taken 13 June and 20 Dec. 1994, respectively (corresponding to 20 and 210 d after Pr application and 15 and 63 cm rain, respectively). The cores were subdivided into increments 10 or 15 cm, oven dried, and analyzed for Pr, Centers of Br mass at both sampling times were significantly deeper in the footslope position (31 and 82 cm for June and December, respectively) compared with the shoulder and linear slope positions combined (25 and 70 cm for June and December, respectively), which was possibly due to lower clay contents (44 vs. 50% clay) and lower water retention (37 vs. 43 cm in the:top meter in December) for the footslope vs. the linear and shoulder slopes combined, respectively. Predicted leaching depths were calculated from measured soil water content profiles and were positively correlated with observed depths to the center of Pr mass for the Dec. 20 sampling (r(2) = 0.35, P < 0.007). Anion leaching may be partially controlled by landscape position, and soils susceptible to initial rapid leaching may not necessarily be susceptible to sustained rapid leaching throughout the year. C1 N Carolina State Univ, Dept Soil Sci, Raleigh, NC 27695 USA. Lockheed Martin Idaho Technol Co, Idaho Falls, ID 83415 USA. RP Cassel, DK (reprint author), N Carolina State Univ, Dept Soil Sci, Raleigh, NC 27695 USA. NR 17 TC 12 Z9 12 U1 2 U2 2 PU SOIL SCI SOC AMER PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 USA SN 0361-5995 J9 SOIL SCI SOC AM J JI Soil Sci. Soc. Am. J. PD SEP-OCT PY 1999 VL 63 IS 5 BP 1319 EP 1326 PG 8 WC Soil Science SC Agriculture GA 258LC UT WOS:000083839800034 ER PT J AU Trettin, CC Johnson, DW Todd, DE AF Trettin, CC Johnson, DW Todd, DE TI Forest nutrient and carbon pools at Walker Branch Watershed: Changes during a 21-year period SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID MIXED OAK FOREST; LOBLOLLY-PINE; ACID-RAIN; 3 DECADES; SOIL; BUDGETS; CALCIUM; ACIDIFICATION; PHOSPHORUS; SOUTHWEST AB A 21-yr perspective on changes in nutrient and C pools on undisturbed upland forest sites is provided. Plots originally representing four col er types have been sampled three times. On each plot, forest biomass, forest floor, and soil, to a depth of 60 cm, were measured, sampled, and analyzed for Ca, Mg, C, N, and P. Exchangeable soil Ca and Mg hale declined in most soils. Despite the low exchangeable Ca, cumulative sequestration in the biomass has exceeded the soil pool, suggesting that soil supplies below 60 cm are satisfying the biomass demand. Extractable soil P also declined, with means ranging from 4.2 to 18.2 kg ha(-1), as a result of reductions in the mineral soil and Oi horizon, The loss of extractable soil P exceeded biomass sequestration in all but one plot, suggesting abiotic soil processes as the removal mechanism. Soil C and N were either stable, although highly variable, or declined, which was unexpected in these undisturbed sites. The net C balance of these sites was controlled by aboveground sequestration, which offset changes in the soil and forest floor, Soil parent material and geomorphic setting strongly influenced the changes in soil properties during the 21-yr period, reflecting the importance of those factors in assessing soil nutrient and C cycles over that of forest cover type. The variability encountered in the periodic soil measurements highlights the difficulty in detecting temporal changes in soil chemical properties. C1 US Forest Serv, USDA, Charleston, SC 29414 USA. Univ Nevada, Desert Res Inst, Reno, NV 89506 USA. Oak Ridge Natl Lab, Environm & Resource Sci Div, Oak Ridge, TN 37831 USA. RP US Forest Serv, USDA, 2730 Savannah Hwy, Charleston, SC 29414 USA. EM trettinc@cofc.edu NR 37 TC 41 Z9 42 U1 1 U2 13 PU SOIL SCI SOC AMER PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 USA SN 0361-5995 EI 1435-0661 J9 SOIL SCI SOC AM J JI Soil Sci. Soc. Am. J. PD SEP-OCT PY 1999 VL 63 IS 5 BP 1436 EP 1448 PG 13 WC Soil Science SC Agriculture GA 258LC UT WOS:000083839800048 ER PT J AU Zweibel, K AF Zweibel, K TI Issues in thin film PV manufacturing cost reduction SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 2nd International Symposium on New Materials for Solar, Hydrogen, Fuel Cell and Batteries - CANCUN 98 CY 1998 CL CANCUN, MEXICO DE photovoltaics; thin films; copper indium diselenide; cadmium telluride; amorphous silicon; thin film silicon; manufacturing costs AB Thin film PV technologies face a number of hurdles as they advance towards low-cost goals that are competitive with traditional sources of electricity. The US Department of Energy cost goal for thin films is about $0.33/W-p, which is based on a module efficiency goal of about 15% and module manufacturing costs of about $50/m(2). This paper investigates the issues associated with achieving the &50/m(2) goal based on opportunities for manufacturing cost reductions. Key areas such as capital costs, deposition rates, layer thickness, materials costs, yields, substrates, and front and back end costs will be examined. Several prior studies support the potential of thin films to reach $50/m(2). This paper will examine the necessary process research improvements needed in amorphous silicon, copper indium diselenide, cadmium telluride, and experimental thin film silicon PV technologies to reach this ambitious goal. One major conclusion is that materials costs must be reduced because they will dominate in mature technologies. Another is that module efficiency could be the overriding parameter if different thin films each optimize their manufacturing to a similar level. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 Natl Renewable Energy Lab, Thin Film PV Partnership, Golden, CO 80401 USA. RP Zweibel, K (reprint author), Natl Renewable Energy Lab, Thin Film PV Partnership, 1617 Cole Blvd, Golden, CO 80401 USA. NR 14 TC 69 Z9 71 U1 1 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD SEP PY 1999 VL 59 IS 1-2 BP 1 EP 18 DI 10.1016/S0927-0248(99)00019-7 PG 18 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 233YV UT WOS:000082455500002 ER PT J AU Gillespie, TJ Marshall, CH Contreras, M Keane, J AF Gillespie, TJ Marshall, CH Contreras, M Keane, J TI Copper indium diselenide (CIS) process, control and manufacturing SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 2nd International Symposium on New Materials for Solar, Hydrogen, Fuel Cell and Batteries - CANCUN 98 CY 1998 CL CANCUN, MEXICO DE CIS; photovoltaics; Ga AB Lockheed Martin Astronautics (LMA) has developed a large-area (30 x 30 cm) in-line, sequential CIS manufacturing approach amenable to low-cost photovoltaics (PV) production. A prototype CIS manufacturing system has been designed and built with compositional uniformity (Cu/ln ratio) verified within +/- 4 atomic percent over a 30 x 30 cm area. CIS (non Ga containing) device efficiencies have been measured by the National Renewable Energy Laboratory (NREL) at 7% on a flexible non-sodium-containing substrate and 10% on a soda-lime-silica glass substrate. Recent CIS effort has included Ga incorporation, with a goal of increasing the cell-level efficiency and modifying the bandgap to reduce module integration losses. Critical elements of the manufacturing capability include the sequential process selection, uniform large-area material deposition, and in situ process control. Details of the process and large-area manufacturing approach are discussed and results presented. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 Lockheed Martin Astronaut, Denver, CO 80201 USA. Natl Renewable Energy Lab, Golden, CO USA. RP Gillespie, TJ (reprint author), Lockheed Martin Astronaut, Denver, CO 80201 USA. NR 2 TC 13 Z9 13 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD SEP PY 1999 VL 59 IS 1-2 BP 27 EP 34 DI 10.1016/S0927-0248(99)00028-8 PG 8 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 233YV UT WOS:000082455500004 ER PT J AU Calixto, ME Sebastian, PJ Bhattacharya, RN Noufi, R AF Calixto, ME Sebastian, PJ Bhattacharya, RN Noufi, R TI Compositional and optoelectronic properties of CIS and CIGS thin films formed by electrodeposition SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 2nd International Symposium on New Materials for Solar, Hydrogen, Fuel Cell and Batteries - CANCUN 98 CY AUG 30-SEP 04, 1998 CL CANCUN, MEXICO SP Natl Autonomous Univ Mexico DE CIS; CIGS; thin films; film deposition ID CUINSE2 AB CuInSe(2) (CIS) and Cu(In,Ga)Se(2) (CIGS) thin films were prepared by electrodeposition and processing. The influence of film deposition parameters such as bath composition, pH, deposition potential and material purity on film properties was studied. The structural, morphological, compositional and opto-electronic properties of electrodeposited and selenized CIS and CIGS thin films were characterized using various techniques. As-deposited as well as selenized films exhibited a compact or a granular morphology depending on the composition. The film stoichiometry was improved after selenization at 550 degrees C in a tubular furnace. The films are formed with a mixed phase composition of CuInSe(2) and CuIn(2)Se(3.5) ternary phases. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, Ctr Invest Energia, Solar H2 Fuel Cell Area, Temixco 62580, Morelos, Mexico. NREL, Golden, CO USA. RP Calixto, ME (reprint author), Univ Nacl Autonoma Mexico, Ctr Invest Energia, Solar H2 Fuel Cell Area, Temixco 62580, Morelos, Mexico. OI Calixto, Ma. Estela/0000-0002-9611-3346 NR 12 TC 54 Z9 63 U1 1 U2 20 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD SEP PY 1999 VL 59 IS 1-2 BP 75 EP 84 DI 10.1016/S0927-0248(99)00033-1 PG 10 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 233YV UT WOS:000082455500009 ER PT J AU Sebastian, PJ Calixto, ME Bhattacharya, RN Noufi, R AF Sebastian, PJ Calixto, ME Bhattacharya, RN Noufi, R TI CIS and CIGS based photovoltaic structures developed from electrodeposited precursors SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 2nd International Symposium on New Materials for Solar, Hydrogen, Fuel Cell and Batteries - CANCUN 98 CY AUG 30-SEP 04, 1998 CL CANCUN, MEXICO SP Natl Autonomous Univ Mexico DE CIS; CIGS; thin films; electrodeposition ID CUINSE2 THIN-FILMS AB In the present study we report the electrodeposition and characterization of CIS and CIGS thin films and a post-deposition thermal processing in vacuum to improve the film stoichiometry by incorporating additional In, Ga and Se. Different kinds of analyses showed that CIS as well as CIGS possess a very thin In-rich surface n-layer. The formation and characterization of solar cell structures from the electrodeposited precursor with the configuratio n glass/Cr/Mo/CIS(CIGS)/CdS/ZnO/MgF(2) is also reported. The optoelectronic properties such as Voc, Isc, FF, eta etc, of the cells are presented. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, CIE, Photovoltaic Syst Grp, Solar Energy Lab, Temixco 62580, Morelos, Mexico. NREL, Golden, CO USA. RP Sebastian, PJ (reprint author), Univ Nacl Autonoma Mexico, CIE, Photovoltaic Syst Grp, Solar Energy Lab, Apartado Postal 34, Temixco 62580, Morelos, Mexico. EM sjp@mazatliimtemix.unam.mx OI Calixto, Ma. Estela/0000-0002-9611-3346 NR 13 TC 40 Z9 44 U1 0 U2 20 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD SEP PY 1999 VL 59 IS 1-2 BP 125 EP 135 DI 10.1016/S0927-0248(99)00037-9 PG 11 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 233YV UT WOS:000082455500013 ER PT J AU Peterson, JJ Hunt, CE Robinson, M AF Peterson, JJ Hunt, CE Robinson, M TI Schottky and ohmic contacts to doped Si1-x-yGexCy layers SO SOLID-STATE ELECTRONICS LA English DT Article ID SYSTEM; HETEROJUNCTIONS; CARBON; ALLOYS AB We report on titanium contacts to n-type and p-type Si1-x-yGexCy strained heteroepitaxial layers on (100)Si and material and electrical characterization of n-type and p-type platinum-silicide-germanide contacts to Si1-x-yGexCy strained heteroepitaxial layers on (100)Si. Ti contacts to n-type Si1-x-yGexCy show rectifying behavior at low doping levels but become ohmic as layers reach 10(18) cm(-3). Ti contacts to p-type Si1-x-yGexCy/Si are ohmic at doping levels as low as 10(15) cm(-3), Contact resistances for Ti/Si1-x-yGexCy contacts had values ranging from 10(-1) to 10(-2) Omega cm(2). X-ray diffraction (XRD) studies of rapid thermal anneal (RTA) silicidation of Pr on SiGeC indicate the reaction proceeds from elemental Pt to Pt-2(SiGeC) and ends in the Pt(SiGeC) phase, analogous to Pt/Si silicides. However, the Pt-silicide-germanide reaction with SiGeC requires higher temperatures than the counterpart Pt reaction with Si. Pt(SiGeC) contacts to n-type SiGeC layers show rectifying behavior with nonideality factors (n) of 1.02 to 1.05 and constant barrier heights of 0.67 eV independent of composition, indicating that Fermi level pinning relative to the SiGeC conduction band is occurring. For contact doping levels of 10(18) cm(-3) and above, Pt(SiGeC) contacts to n-type SiGeC layers are ohmic with constant contact resistance values of 10(-2) Omega cm(2) Pt(SiGeC) contacts to p-type Si1-x-yGexCy/Si were ohmic over the entire doping range studied, with resistances from the 1 Omega cm(2) range at intrinsic alloy doping levels, to the 10(-2) Omega cm(2) range for doping levels of 10(18) cm(-3). Using Pt(SiGeC) ohmic contacts to p-type SiGeC, current-voltage measurements of Si1-x-yGexCy to (100)Si heterojunctions are also presented. Heterojunction barrier heights track the variation of the SiGeC energy bandgap to a factor of 0.84 x. The Si1-x-yGexCy/Si heterojunction valence band discontinuity, Delta E-v, decreases 15 meV per %C incorporated into the strained alloy layer for 0 < y < 0.01 and increases Delta E-v by 2.8 meV per %Ge for 0 < x < 0.11. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA. Lawrence Semicond Res Lab Inc, Tempe, AZ 85282 USA. RP Hunt, CE (reprint author), Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA. NR 21 TC 7 Z9 7 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1999 VL 43 IS 9 BP 1725 EP 1734 DI 10.1016/S0038-1101(99)00059-3 PG 10 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA 248GX UT WOS:000083267700009 ER PT J AU Ren, F Pearton, SJ Abernathy, CR Baca, A Cheng, P Shul, RJ Chu, SNG Hong, M Schurman, MJ Lothian, JR AF Ren, F Pearton, SJ Abernathy, CR Baca, A Cheng, P Shul, RJ Chu, SNG Hong, M Schurman, MJ Lothian, JR TI GaN metal oxide semiconductor field effect transistors SO SOLID-STATE ELECTRONICS LA English DT Letter ID HFETS AB A GaN based depletion mode metal oxide semiconductor field effect transistor (MOSFET) was demonstrated using Ga2O3(Gd2O3) as the gate dielectric. The MOS gate reverse breakdown voltage was >35 V which was significantly improved from 17 V of Pt Schottky gate on the same material. A maximum extrinsic transconductance of 15 mS/mm was obtained at V-ds = 30 V and device performance was limited by the contact resistance. A unity current gain cut-off frequency, f(T), and maximum frequency of oscillation: f(max) of 3.1 and 10.3 GHz, respectively, were measured at V-ds = 25 V and V-gs = -20 V. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Florida, Gainesville, FL 32606 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA. EMCORE Inc, Somerset, NJ 07061 USA. Multiplex Inc, S Plainfield, NJ USA. RP Ren, F (reprint author), Univ Florida, Gainesville, FL 32606 USA. RI Hong, Minghwei/C-1433-2010 NR 13 TC 7 Z9 8 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1999 VL 43 IS 9 BP 1817 EP 1820 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA 248GX UT WOS:000083267700023 ER PT J AU Warpinski, NR Wright, TB Uhl, JE Engler, BP Drozda, PM Peterson, RE Branagan, PT AF Warpinski, N. R. Wright, T. B. Uhl, J. E. Engler, B. P. Drozda, P. M. Peterson, R. E. Branagan, P. T. TI Microseismic Monitoring of the B-Sand Hydraulic-Fracture Experiment at the DOE/GRI Multisite Project SO SPE JOURNAL LA English DT Article AB Six hydraulic-fracture injections into a fluvial sandstone at a depth of 4,500 ft were monitored with multilevel, triaxial, seismic receivers in two wells, resulting in maps of the growth and final geometry of each fracture based upon microseismic activity. These diagnostic images show that the hydraulic fractures are highly contained for smaller-volume KCl-water injections, but height growth is significant for the larger-volume, higher-rate, higher-viscosity treatments. Fracture lengths for most injections are similar regardless of volume and fluid type. C1 [Warpinski, N. R.] Sandia Natl Labs Albuquerque, Albuquerque, NM 87123 USA. [Wright, T. B.] Pinnacle Technol Inc Houston, Houston, TX USA. [Uhl, J. E.] Gas Res Inst, Sandia Natl Labs & Branagan & Assocs, Chicago, IL 60631 USA. [Drozda, P. M.] Sandia Natl Labs, Albuquerque, NM 87123 USA. [Peterson, R. E.; Branagan, P. T.] Branagan & Assocs Inc Vegas, Las Vegas, NV USA. RP Warpinski, NR (reprint author), Sandia Natl Labs Albuquerque, Albuquerque, NM 87123 USA. EM nwrarpi@sandia.gov; peterson@intermind.net; banda@intermind.net FU Gas Research Institute; Department of Energy FX The authors would like to acknowledge the Gas Research Institute, with funding for this project managed by Steve Wolhart, and the Department of Energy, with funding managed by Karl-H. Frohne, for their continued support of this project. Special thanks are in order for many contributors to this work at Sandia National Labs, Branagan & Associates, Resource Engineering Systems, CER Corporation, Jim Fix & Associates, Bolt Technology Corporation, and many others. NR 24 TC 4 Z9 4 U1 0 U2 1 PU SOC PETROLEUM ENG PI RICHARDSON PA 222 PALISADES CREEK DR,, RICHARDSON, TX 75080 USA SN 1086-055X EI 1930-0220 J9 SPE J JI SPE J. PD SEP PY 1999 VL 4 IS 3 BP 242 EP 250 PG 9 WC Engineering, Petroleum SC Engineering GA V33KE UT WOS:000209016900008 ER PT J AU Hodge, EM AF Hodge, EM TI Flow injection analyses as applied to wastewater SO SPECTROSCOPY LA English DT Article AB This article explains same of the analytical capabilities of the Inorganic Analysis Team at Los Alamos National Laboratory (LANL) as related to wastewater analysis with a focus on flow injection analysis. With traditional and state-of-the-art art analytical techniques, we focus on the trace determination of contaminants in many types of materials. Cyanides, total phosphorus,and orthophosphates are analyzed by segmented Row analysis, in which the analytical stream is divided into discrete segments by the periodic injection of bubbles of air. Inductively coupled plasma coupled with optical emission and mass spectrometry and atomic absorption have proven to be a successful technique for multielement analysis. Trace metals are analyzed in a number of complex matrices. C1 Univ Calif Los Alamos Natl Lab, Inorgan Trace Anal Dept, Los Alamos, NM 87545 USA. NR 10 TC 0 Z9 0 U1 0 U2 2 PU ADVANSTAR COMMUNICATIONS PI DULUTH PA 131 W FIRST ST, DULUTH, MN 55802 USA SN 0887-6703 J9 SPECTROSCOPY JI Spectroscopy PD SEP PY 1999 VL 14 IS 9 BP 25 EP + PG 4 WC Spectroscopy SC Spectroscopy GA 235BQ UT WOS:000082519500004 ER PT J AU Zhu, YT Baldonado, PS Bingert, JF Holesinger, TG Willis, JO Peterson, DE AF Zhu, YT Baldonado, PS Bingert, JF Holesinger, TG Willis, JO Peterson, DE TI Compressive anneal processing (CAP) of Bi2223 superconducting tapes SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID CRITICAL-CURRENT-DENSITY; SILVER-SHEATHED TAPES; CU-O SUPERCONDUCTORS; TRANSPORT CRITICAL-CURRENT; HOT-PRESS METHOD; 2223 PHASE; AG; DEFORMATION; TEXTURE; BI1.6PB0.4SR2CA2CU3OX AB The conventional processing of oxide powder-in-tube Bi2223 superconductor tapes involves iterative, cycles of mechanical deformation to develop texture and reduce porosity, followed by thermal annealing to react components, relieve stress and heal cracks. However, texture and deformation hardening and cracking may limit the ability to obtain the desired grain texture through deformation alone. In addition, desintering of the oxide core occurs during annealing. We have developed a compressive anneal processing (CAP) technique in which a continuous uniaxial pressure is applied during the annealing. The new process is found to promote texture formation, enhance reaction kinetics and prevent desintering and bloating. Our initial results show that the CAP technique significantly improves the critical current density. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. RP Zhu, YT (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, MS K763, Los Alamos, NM 87545 USA. RI Zhu, Yuntian/B-3021-2008 OI Zhu, Yuntian/0000-0002-5961-7422 NR 39 TC 2 Z9 2 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 1999 VL 12 IS 9 BP 640 EP 644 DI 10.1088/0953-2048/12/9/311 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 234WQ UT WOS:000082507700013 ER PT J AU Macek, J AF Macek, J TI Physics of atomic collisions in retrospect SO TECHNICAL PHYSICS LA English DT Article ID SPECTRA; IONIZATION; ELECTRONS AB The classic work by Mott and Massey, in which the scope of the physics of atomic collisions was defined, was published about 65 years ago. Since then, this field has undergone considerable development. In fact, all the theoretical methods named by Mott and Massey have been implemented to some extent. As for experiment, the measurements performed, which are differential with respect to several parameters, have provided for reliable testing of the mechanisms proposed. The physics of atomic collisions has been developed to the point that we can look back on the road taken and discover many achievements which have promoted its development. Progress in science is usually associated with highly concentrated efforts on the part of a critical number of investigators to solve a specific problem, which is widely regarded as being of great importance. Such a "breakthrough" is usually followed by rapid development of the field. In this respect, the physics of atomic collisions is no exception. It has known periods of highly concentrated efforts aimed at solving specific problems and breakthroughs followed by rapid development and subsequent periods of stagnation. The cycles have repeated: a new area for concentrated efforts is discovered, a breakthrough occurs, and a new concept is established. Some of these cycles are analyzed from the standpoint of their significance to atomic physics as a whole. (C) 1999 American Institute of Physics. [S1063- 7842(99)00609-1]. C1 Univ Tennessee, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Macek, J (reprint author), Univ Tennessee, Knoxville, TN 37996 USA. NR 31 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 1063-7842 J9 TECH PHYS+ JI Tech. Phys. PD SEP PY 1999 VL 44 IS 9 BP 1021 EP 1024 DI 10.1134/1.1259462 PG 4 WC Physics, Applied SC Physics GA 235ZR UT WOS:000082574200006 ER PT J AU Andres, RJ Fielding, DJ Marland, G Boden, TA Kumar, N Kearney, AT AF Andres, RJ Fielding, DJ Marland, G Boden, TA Kumar, N Kearney, AT TI Carbon dioxide emissions from fossil-fuel use, 1751-1950 SO TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY LA English DT Article ID PAST 2 CENTURIES; ATMOSPHERIC CO2 AB Newly compiled energy statistics allow for an estimation of the complete time series of carbon dioxide (CO2) emissions from fossil-fuel use for the years 1751 to the present. The lime series begins with 3 x 10(6) metric tonnes carbon (C). This:initial Aux represents the early stages of the fossil-fuel era. The CO2 flux increased exponentially until World War I. The time series derived here seamlessly joins the modern 1950 to present time series. Total cumulative CO2 emissions through 1949 were 61.0 x 10(9) tonnes C from fossil-fuel use, virtually all since the beginning of the Industrial Revolution around 1860. The rate of growth continues to grow during present times, generating debate on the probability of enhanced greenhouse warming. In addition to global totals, national totals and 1 degrees global distributions of the data have been calculated. C1 Univ Alaska Fairbanks, Inst No Engn, Fairbanks, AK 99775 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Andres, RJ (reprint author), Univ Alaska Fairbanks, Inst No Engn, Fairbanks, AK 99775 USA. RI ANDRES, ROBERT/B-9786-2012; OI ANDRES, ROBERT/0000-0001-8781-4979 NR 18 TC 65 Z9 65 U1 2 U2 28 PU CO-ACTION PUBLISHING PI JARFALLA PA RIPVAGEN 7, JARFALLA, SE-175 64, SWEDEN SN 0280-6509 EI 1600-0889 J9 TELLUS B JI Tellus Ser. B-Chem. Phys. Meteorol. PD SEP PY 1999 VL 51 IS 4 BP 759 EP 765 DI 10.1034/j.1600-0889.1999.t01-3-00002.x PG 7 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 242WN UT WOS:000082964800002 ER PT J AU Mani, C Freeman, S Nelson, DO Vogel, JS Turteltaub, KW AF Mani, C Freeman, S Nelson, DO Vogel, JS Turteltaub, KW TI Species and strain comparisons in the macromolecular binding of extremely low doses of [C-14]benzene in rodents, using accelerator mass spectrometry SO TOXICOLOGY AND APPLIED PHARMACOLOGY LA English DT Article DE benzene; accelerator mass spectrometry; DNA adduct; protein adduct; radiocarbon; mice; rat ID DNA ADDUCT FORMATION; B6C3F1 MICE; RISK ASSESSMENT; BENZENE METABOLISM; PROTEIN ADDUCTS; C-14 BENZENE; BONE-MARROW; RATS; TOXICITY; EXPOSURE AB The kinetics of macromolecular binding of a 5 mu g/kg body wt dose of [C-14]benzene was studied over 48 h in B6C3F(1), DBA/2, and C57BL/6 mice and Fischer rats to determine if adduct levels reflect known differences in metabolic capacity, genotoxicity, and carcinogenic potency. Previous studies have suggested that differences in benzene toxicity among strains result from differences in metabolism. Rats and mice were administered [C-14]benzene (i.p.), followed by removal of liver and bone marrow at time intervals up to 48 h postexposure. Protein and DNA were isolated and analyzed by accelerator mass spectrometry, Area under the curves for protein and DNA adducts in bone marrow were greatest in B6C3F(1) mouse > DBA/2 mouse > C57BL/6 mouse > Fischer rat. These data are consistent with the hypothesis that metabolic capacity contributes to the difference in benzene's carcinogenicity among species, Additionally, these data suggest that target organ adduct levels correlate with tumorigenicity and thus may be indicative of an individuals risk, (C) 1999 Academic Press. C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. Univ Calif San Francisco, Dept Pharmaceut Chem, San Francisco, CA 94143 USA. RP Turteltaub, KW (reprint author), Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, L-452,7000 E Ave, Livermore, CA 94550 USA. RI Freeman, Stewart/C-3290-2012 OI Freeman, Stewart/0000-0001-6148-3171 NR 53 TC 15 Z9 15 U1 0 U2 1 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0041-008X J9 TOXICOL APPL PHARM JI Toxicol. Appl. Pharmacol. PD SEP 1 PY 1999 VL 159 IS 2 BP 83 EP 90 DI 10.1006/taap.1999.8707 PG 8 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA 249RA UT WOS:000083345000002 PM 10495771 ER PT J AU Mounho, BJ Thrall, BD AF Mounho, BJ Thrall, BD TI The extracellular signal-regulated kinase pathway contributes to mitogenic and antiapoptotic effects of peroxisome proliferators in vitro SO TOXICOLOGY AND APPLIED PHARMACOLOGY LA English DT Article DE peroxisome proliferators; extracellular signal-regulated kinase; mitogenesis; apoptosis; hepatocarcinogenesis ID ACTIVATED PROTEIN-KINASE; PROMOTE CLONAL EXPANSION; EPIDERMAL-GROWTH-FACTOR; DNA-SYNTHESIS; PHOSPHATIDYLINOSITOL 3-KINASE; GLYCOGEN-SYNTHASE; RAT HEPATOCYTES; RECEPTOR-ALPHA; MAP KINASES; PPAR-ALPHA AB Peroxisome proliferators are a class of nongenotoxic rodent hepatocarcinogens thought to induce tumors by altering the balance between mitosis and apoptosis. Previous studies suggest mitogenic growth factors that act through the extracellular signal-regulated kinase (ERK) pathway, including insulin and epidermal growth factor (EGF), modulate peroxisome proliferator-activated receptor alpha activation as well as the mitogenic activity of peroxisome proliferators. We have investigated whether the ERK pathway prays a role in regulating the growth and survival altering properties of peroxisome proliferators in primary mouse hepatocytes. Exposure of hepatocytes to Wy-14,643 and trichloroacetate resulted in a dose-dependent phosphorylation and activation of ERK, Peroxisome proliferator-induced ERK phosphorylation was blocked when cells were pretreated with the MEK (ERK kinase) inhibitor, PD098059, or the phosphatidylinositol 3-kinase (PI3K) inhibitors, LY294002 and apigenin, suggesting that both MEK and PI3K are involved in the initial response. The pathway leading to peroxisome proliferator-induced ERK activation is different than that induced by phorbol ester or EGF, since the PI3K inhibitors had no effect on ERK phosphorylation induced by these agents. Under defined culture conditions, Wy-14,643 increased the level of BrdU incorporation in primary hepatocytes and suppressed the incidence of apoptosis induced by transforming growth factor beta 1. In contrast, concentrations of PD098059 that block Wy-14,643-induced ERK phosphorylation also blocked the stimulation of DNA replicative synthesis and suppression of apoptosis by Wy-14,643, These studies indicate that activation of the ERK pathway through a PI3K-dependent mechanism may play a significant role in the tumor-promoting properties of peroxisome proliferators, (C) 1999 Academic Press. C1 Pacific NW Natl Lab, Mol Biosci Dept, Richland, WA 99352 USA. RP Thrall, BD (reprint author), Pacific NW Natl Lab, Mol Biosci Dept, Richland, WA 99352 USA. NR 32 TC 41 Z9 41 U1 0 U2 0 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0041-008X J9 TOXICOL APPL PHARM JI Toxicol. Appl. Pharmacol. PD SEP 1 PY 1999 VL 159 IS 2 BP 125 EP 133 DI 10.1006/taap.1999.8740 PG 9 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA 249RA UT WOS:000083345000007 PM 10495776 ER PT J AU Miller, MK Sijbrandij, SJ AF Miller, MK Sijbrandij, SJ TI A novel approach to gaseous field ion sources for focused ion beam applications SO ULTRAMICROSCOPY LA English DT Article; Proceedings Paper CT 45th International Field Emission Symposium - Field Emission 98 CY SEP 12-18, 1998 CL IRBID, JORDAN SP Int Field Emiss Soc DE gaseous field ion sources; focused ion sources AB Experiments have demonstrated that significantly increased angular current densities may be obtained from protrusions formed from ultrafine precipitates compared to the normal field ion specimens. The confinement of the ion-emitting region to the precipitates is an effective method of increasing the angular current density. This type of emitter may be a potential candidate for gaseous focused ion sources. Published by Elsevier Science B.V. C1 Oak Ridge Natl Lab, Div Met & Ceram, Microscopy & Microanalyt Sci Grp, Oak Ridge, TN 37831 USA. RP Miller, MK (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, Microscopy & Microanalyt Sci Grp, POB 2008,Bldg 5500,MS 6376, Oak Ridge, TN 37831 USA. NR 8 TC 2 Z9 2 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD SEP PY 1999 VL 79 IS 1-4 BP 225 EP 230 DI 10.1016/S0304-3991(99)00063-7 PG 6 WC Microscopy SC Microscopy GA 233ZR UT WOS:000082457500031 ER PT J AU Miller, MK Larson, DJ AF Miller, MK Larson, DJ TI Remote atom probe field ion microscopy SO ULTRAMICROSCOPY LA English DT Article; Proceedings Paper CT 45th International Field Emission Symposium - Field Emission 98 CY SEP 12-18, 1998 CL IRBID, JORDAN SP Int Field Emiss Soc DE atom probe analysis; remote monitoring AB Each of the normal stages of operation of the atom probe, i.e., specimen loading, field ion imaging, selection of the feature of interest for analysis, and atom probe analysis, have been examined to determine the feasibility of operating an atom probe over the Internet. Experiments have been performed that have demonstrated the feasibility of remotely monitoring and controlling a conventional atom probe field ion microscope and a three-dimensional atom probe. Published by Elsevier Science B.V. C1 Oak Ridge Natl Lab, Div Met & Ceram, Microscopy & Microanalyt Sci Grp, Oak Ridge, TN 37831 USA. RP Miller, MK (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, Microscopy & Microanalyt Sci Grp, POB 2008, Oak Ridge, TN 37831 USA. NR 2 TC 2 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD SEP PY 1999 VL 79 IS 1-4 BP 259 EP 264 DI 10.1016/S0304-3991(99)00064-9 PG 6 WC Microscopy SC Microscopy GA 233ZR UT WOS:000082457500036 ER PT J AU Sijbrandij, SJ Miller, MK AF Sijbrandij, SJ Miller, MK TI Performance of a microsphere plate electron multiplier in APFIM applications SO ULTRAMICROSCOPY LA English DT Article; Proceedings Paper CT 45th International Field Emission Symposium - Field Emission 98 CY SEP 12-18, 1998 CL IRBID, JORDAN SP Int Field Emiss Soc DE election multiplier; microsphere plate; detector ID ATOM PROBE; EFFICIENCY; DETECTORS AB The microsphere plate (MSP) is a recently introduced electron multiplier, that is comparable in principle of operation to the well-known microchannel plate. The performance of a MSP detector has been evaluated for field ion imaging and single atom detection in time-of-flight atom probe mass spectrometry. The image performance of a MSP is not sufficient for obtaining high-quality field ion images, due to the lack of spatial resolution as well as the granularity observed in the images. Gain, pulse height resolution, and temporal resolution obtained from one double thickness MSP are sufficient for use in a time-of-flight single atom sensitivity detector. The detection efficiency was estimated to be similar to 42% for ions in the energy range between 10 and 40 keV. The operation of the MSP detector was successfully demonstrated in a typical atom probe application. Published by Elsevier Science B.V. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Miller, MK (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008,MS 6376,Bldg 5500, Oak Ridge, TN 37831 USA. NR 15 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD SEP PY 1999 VL 79 IS 1-4 BP 265 EP 271 DI 10.1016/S0304-3991(99)00065-0 PG 7 WC Microscopy SC Microscopy GA 233ZR UT WOS:000082457500037 ER PT J AU Ridgway, PL Hunt, AJ Quinby-Hunt, M Russo, RE AF Ridgway, PL Hunt, AJ Quinby-Hunt, M Russo, RE TI Laser ultrasonics on moving paper SO ULTRASONICS LA English DT Article DE lamb waves; laser ultrasonics; non-destructive testing; paper ID ELASTIC PROPERTIES; ORIENTATION; MACHINE AB The propagation velocities of laser-generated ultrasonic plate waves were measured on paper moving at 10 m s(-1) using a Mach-Zender interferometer and scanning mirror. Fast- and slow-propagating plate wave vibrational modes were detected. Velocity measurements were made on four types of paper, perpendicular to and in the direction of paper motion. Laser-ultrasonic measurements of phase velocities for the fast-propagating vibrational mode were compared with contact transducer-based measurements. The effect on signal amplitude of (1) distance from the detection point to the ultrasound generation point and (2) the pulse energy of the ultrasound generation laser was studied using stationary paper. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94702 USA. RP Ridgway, PL (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94702 USA. NR 15 TC 27 Z9 27 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0041-624X J9 ULTRASONICS JI Ultrasonics PD SEP PY 1999 VL 37 IS 6 BP 395 EP 403 DI 10.1016/S0041-624X(99)00017-7 PG 9 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA 252LG UT WOS:000083502500003 ER PT J AU Miller, DL Creim, JA Gies, RA AF Miller, DL Creim, JA Gies, RA TI Heating vs. cavitation in the induction of mouse hindlimb paralysis by ultrasound SO ULTRASOUND IN MEDICINE AND BIOLOGY LA English DT Article DE lithotripsy; shock waves; ultrasound therapy; ultrasound adverse effects ID HEMORRHAGES; INTESTINE; NEONATE AB Grip strength tests were performed on hairless mice before and after various ultrasound exposures in a temperature-controlled water bath at 37 degrees C. Lithotripter exposure of 800 shock waves produced no effect on hindlimb function, In contrast, 1.09-MHz exposures at 1 MPa with 10:100 ms burst mode did produce a statistically significant reduction in grip strength of about 60%. The exposure duration was important for the 1.0-MPa burst mode exposure, with grip-strength reductions appearing after 150 s or longer exposures. Continuous exposure at 3.3 W cm(-2) (0.32 MPa peak) for 200 s produced the same effect as burst mode exposure at 3.3 W cm(-2) (1-MPa peak) for 200 s, which implicates the temporal average intensity as an important factor. The temperature elevations for 1-MPa burst mode was estimated from thermocouple measurements in the spine to be 12 degrees C after 200-s exposure. Although tests of exposures in cool (32 degrees C) and warm (42 degrees C) baths produced inconclusive results in regard to the thermal mechanism, the effects observed appear to result from ultrasonic heating (rather than from cavitation). Thus, any potentially harmful consequences associated with the effects examined might be related more, for example, to ultrasonic hyperthermia therapy than to shock-wave lithotripsy. (C) 1999 World Federation for Ultrasound in Medicine & Biology. C1 Univ Michigan, Dept Radiol, Ann Arbor, MI 48109 USA. Pacific NW Lab, Richland, WA 99352 USA. RP Miller, DL (reprint author), Univ Michigan, Dept Radiol, 3315 Kresge III,200 Zina Pitcher Pl, Ann Arbor, MI 48109 USA. FU NCI NIH HHS [CA42947] NR 17 TC 7 Z9 7 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA SN 0301-5629 J9 ULTRASOUND MED BIOL JI Ultrasound Med. Biol. PD SEP PY 1999 VL 25 IS 7 BP 1145 EP 1150 DI 10.1016/S0301-5629(99)00054-X PG 6 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA 234YE UT WOS:000082511300014 PM 10574346 ER PT J AU Detwiler, RL Pringle, SE Glass, RJ AF Detwiler, RL Pringle, SE Glass, RJ TI Measurement of fracture aperture fields using transmitted light: An evaluation of measurement errors and their influence on simulations of flow and transport through a single fracture SO WATER RESOURCES RESEARCH LA English DT Article ID NATURAL FRACTURE; ROCK FRACTURES; POROUS-MEDIA; FLUID-FLOW; X-RAY; VISUALIZATION; MODEL AB Understanding of single-phase and multiphase flow and transport in fractures can be greatly enhanced through experimentation in transparent systems (analogs or replicas) where light transmission techniques yield quantitative measurements of aperture, solute concentration, and phase saturation fields. Here we quantify aperture field measurement error and demonstrate the influence of this error on the results of flow and transport simulations (hypothesized experimental results) through saturated and partially saturated fractures. We find that precision and accuracy can be balanced to greatly improve the technique and present a measurement protocol to obtain a minimum error field. Simulation results show an increased sensitivity to error as we move from flow to transport and from saturated to partially saturated conditions. Significant sensitivity under partially saturated conditions results in differences in channeling and multiple-peaked breakthrough curves. These results emphasize the critical importance of defining and minimizing error for studies of flow and transport in single fractures. C1 Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80302 USA. Sandia Natl Labs, Flow Visualizat & Proc Lab, Geohydrol Lab 6115, Albuquerque, NM USA. RP Detwiler, RL (reprint author), Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80302 USA. RI Detwiler, Russell/C-3228-2008 OI Detwiler, Russell/0000-0002-7693-9271 NR 34 TC 62 Z9 63 U1 1 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1999 VL 35 IS 9 BP 2605 EP 2617 DI 10.1029/1999WR900164 PG 13 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 230HY UT WOS:000082246800001 ER PT J AU Maxwell, RM Kastenberg, WE Rubin, Y AF Maxwell, RM Kastenberg, WE Rubin, Y TI A methodology to integrate site characterization information into groundwater-driven health risk assessment SO WATER RESOURCES RESEARCH LA English DT Article ID HYDROGEOLOGICAL DECISION-ANALYSIS; WASTE MANAGEMENT SITES; HYDRAULIC CONDUCTIVITY; CALIFORNIA GROUNDWATER; ENGINEERING DESIGN; REGULATORY POLICY; SOLUTE TRANSPORT; TRAVEL-TIME; UNCERTAINTY; VARIABILITY AB A methodology is presented that incorporates site characterization information (in the form of hydraulic conductivity measurements) into a health risk assessment to individuals utilizing contaminated household water developed from groundwater sources. This methodology explicitly incorporates uncertainty (including the statistical parameter uncertainty arising from a limited number of hydraulic conductivity measurements) and variability (such as the variability in individual physiology) in all parameters, resulting in a nested Monte Carlo procedure. The methodology is demonstrated using a hypothetical case study where the sensitivity of various end points (including human health risk) to increased sampling of hydraulic conductivity are explored. It is shown that an increase in the number of measurements of hydraulic conductivity decreases the error in and uncertainty of predicted human health risk. Cost-benefit curves are developed and incorporated into a simple decision framework to determine the number of samples of hydraulic conductivity that are needed to accurately predict the human health risk from a contaminated site. C1 Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Maxwell, RM (reprint author), Univ Calif Lawrence Livermore Natl Lab, Geosci & Environm Technol Div, Livermore, CA 94550 USA. RI Maxwell, Reed/D-7980-2013 OI Maxwell, Reed/0000-0002-1364-4441 NR 50 TC 63 Z9 63 U1 0 U2 8 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1999 VL 35 IS 9 BP 2841 EP 2855 DI 10.1029/1999WR900103 PG 15 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 230HY UT WOS:000082246800020 ER PT J AU Greenwood, OD Moulzolf, SC Blau, PJ Lad, RJ AF Greenwood, OD Moulzolf, SC Blau, PJ Lad, RJ TI The influence of microstructure on tribological properties of WO3 thin films SO WEAR LA English DT Article DE WO3; thin films; microstructure; friction; wear ID BEHAVIOR; FRICTION; TEMPERATURES; CERAMICS; WATER; WEAR AB The influence of the microstructure of WO3 thin films upon friction and wear during sliding contact was studied using two different tribometers. The tungsten trioxide (WO3) thin films of controlled microstructure were grown on R-plane sapphire substrates using electron cyclotron resonance (ECR) oxygen-plasma-assisted electron beam evaporation of WO3 pellets. The WO3 films were fabricated to consist of amorphous, polycrystalline or epitaxial microstructure, depending on the deposition temperature, as indicated by in situ RHEED analysis. Pin-on-disk testing of the WO3 films was performed using 10 mm diameter sapphire and 440C stainless steel sliders and 1 N normal force. Epitaxial crystalline WO3 films showed lowest friction( mu similar to 0.3 for both sapphire and steel spheres) and greatest production of debris, while amorphous WO3 films exhibited higher friction coefficients (up to mu similar to 0.6 for sapphire spheres and mu similar to 1.1 for steel spheres), less debris production, and more slider wear. Epitaxial WO3 films exhibited low friction (mu similar to 0.16) in single pass tests with sapphire and steel sliders (1 mm stroke, 0.1 mm/s, 0.1 N load,), whereas amorphous and polycrystalline WO3 films showed transitions to much higher friction (up to mu similar to 0.7). Lower friction and wear of WO3 films with epitaxial structure compared to amorphous structure appears to be due to a lubricious WO3 layer transferred to the slider from the epitaxial film, (C) 1999 Elsevier Science S.A. All rights reserved. C1 Univ Maine, Surface Sci & Technol Lab, Orono, ME 04469 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Lad, RJ (reprint author), Univ Maine, Surface Sci & Technol Lab, Orono, ME 04469 USA. RI Lad, Robert/G-1669-2014 NR 19 TC 26 Z9 27 U1 2 U2 9 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD SEP PY 1999 VL 232 IS 1 BP 84 EP 90 DI 10.1016/S0043-1648(99)00255-0 PG 7 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA 249QB UT WOS:000083342800010 ER PT J AU Cannell, GR Gee, JT Heise, RB AF Cannell, GR Gee, JT Heise, RB TI Upset welding assures a leak-tight, structurally sound seal SO WELDING JOURNAL LA English DT Article C1 Dept Energy, Savannah River Site, Aiken, SC USA. RP Cannell, GR (reprint author), Dept Energy, Savannah River Site, Aiken, SC USA. NR 6 TC 2 Z9 2 U1 1 U2 1 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 USA SN 0043-2296 J9 WELD J JI Weld. J. PD SEP PY 1999 VL 78 IS 9 BP 41 EP 44 PG 4 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA 231TK UT WOS:000082326100008 ER PT J AU Bradley, DA Kissel, L Pratt, RH AF Bradley, DA Kissel, L Pratt, RH TI Elastic photon scattering and normalization of in vivo XRF analyses of lead in bone SO X-RAY SPECTROMETRY LA English DT Article; Proceedings Paper CT European Conference on Energy Dispersive X-Ray Spectrometry 1998 (EDXRS-98) CY JUN 07-12, 1998 CL BOLOGNA, ITALY AB lOne method of monitoring long-term exposure to Pb concerns the siting of an appropriate source-detector arrangement proximal to the tibial bone, detecting the x-ray fluorescence (XRF) in a backscattering geometry, Some systems make use of a relatively active source of Cd-109 mounted on the front of a thin-window high-resolution detector. The elastic peak at 88.036 keV, which is assumed to be due to the higher Z components of natural hone, is well separated from the Compton peak, Evaluation of the elastic peak allows normalization of the XRF signal, with results being stated in terms of micrograms of Pb per gram of bone mineral. In the present study, simulation has been made of elastic scattering from compact bone (ICRU-37 eight-element composition) and soft tissue (ICRU-44 nine-element composition) to which has been added Pb in the range 10-1000 ppm by mass. Interest focuses on the extent to which these Pb concentrations can affect the accuracy of the normalization process. Results are obtained for photon energies in the range 1-1000 keV and scattering angles of 10 degrees and 165 degrees, The contribution from Pb to total elastic scattering increases sharply for photon energies above the K-photoeffect threshold of Pb (i,e, above approximately 100 keV) and is more important to the total elastic cross-section at 165 degrees than at 10 degrees, For radionuclide source energies which are practical for the in vivo detection of Pb, the normalization procedure is affected at levels of much less than 1%. Copyright (C) 1999 John Wiley & Sons, Ltd. C1 Univ Malaya, Dept Phys, Kuala Lumpur 50603, Malaysia. Univ Calif Lawrence Livermore Natl Lab, Div 5, Phys & Space Technol Directorate, Livermore, CA 94551 USA. Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. RP Bradley, DA (reprint author), Univ Malaya, Dept Phys, Kuala Lumpur 50603, Malaysia. NR 8 TC 3 Z9 3 U1 0 U2 1 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0049-8246 J9 X-RAY SPECTROM JI X-Ray Spectrom. PD SEP-OCT PY 1999 VL 28 IS 5 BP 339 EP 341 DI 10.1002/(SICI)1097-4539(199909/10)28:5<339::AID-XRS363>3.0.CO;2-R PG 3 WC Spectroscopy SC Spectroscopy GA 243KU UT WOS:000082997100008 ER PT J AU Donnelly, A Jones, MB Burke, JI Schnieders, B AF Donnelly, A Jones, MB Burke, JI Schnieders, B TI Does elevated CO2 protect grain yield of wheat from the effects of ozone stress? SO ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES LA English DT Article; Proceedings Paper CT International Workshop in Stress Synergisms in Plants CY AUG 23-26, 1998 CL TATABANYA, HUNGARY DE elevated atmospheric CO2; elevated O-3; wheat; grain yield ID TRITICUM-AESTIVUM L; OPEN-TOP CHAMBERS; SPRING WHEAT; TROPOSPHERIC OZONE; CARBON-DIOXIDE; ATMOSPHERIC CO2; WATER-STRESS; PLANT-GROWTH; DRY-MATTER; LEAF-AREA AB This study has investigated the effects of elevated CO2 and elevated O-3, both singly and in combination, on the yield of spring wheat (Triticum aestivum L., cv. Minaret). Plants were grown in open-top chambers and exposed to three CO2 concentrations (ambient, 510 and 680 ppmv) and two O-3 concentrations (ambient and ambient +50 or +90 ppbv) either from anthesis onwards or for the full growing season. To date, experiments that have investigated the interactive effects of these gases have shown a variety of responses, ranging from an amelioration of the damaging effects of high O-3 to a greater sensitivity to O-3, at elevated CO2. The effects on grain yield and yield components were determined. Our results confirm that elevated CO2 provides some protection to a wheat crop against the damaging effects of O-3 On grain yield. However, the level of protection varies from one growing season to the next and also appears to be related particularly to the timing of exposure to elevated O-3. C1 Univ Dublin Trinity Coll, Dept Bot, Dublin 2, Ireland. TEAGASC, Agr & Food Dev Author, Oak Pk Res Ctr, Carlow, Ireland. RP Jones, MB (reprint author), Univ Dublin Trinity Coll, Dept Bot, Dublin 2, Ireland. NR 30 TC 13 Z9 17 U1 2 U2 5 PU VERLAG Z NATURFORSCH PI TUBINGEN PA POSTFACH 2645, W-7400 TUBINGEN, GERMANY SN 0939-5075 J9 Z NATURFORSCH C JI Z.Naturforsch.(C) PD SEP-OCT PY 1999 VL 54 IS 9-10 BP 802 EP 811 PG 10 WC Biochemistry & Molecular Biology; Pharmacology & Pharmacy SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy GA 246ZP UT WOS:000083196400029 ER PT J AU McCauley, SE Goldstein, AH DePaolo, DJ AF McCauley, SE Goldstein, AH DePaolo, DJ TI An isotopic approach for understanding the CH3Br budget of the atmosphere SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID METHYL-BROMIDE; PHYTOPLANKTON CULTURES; ORGANIC-COMPOUNDS; METHANE; CHLORIDE; OCEAN; BIOSYNTHESIS; HALOMETHANE; OXIDATION; LIFETIME AB The atmospheric budget of methyl bromide (CH3Br), an ozone-depleting gas, is highly uncertain, because it has complex sources and sinks. Although oceans, biomass burning, and industrial production are identified as the major sources, the fraction of CH3Br that is contributed by each source is not well known. A mass-balance approach that exploits differences in the carbon isotopic signature (delta(13)C) of CH3Br sources and sinks may provide a means of reducing uncertainties in the atmospheric budget. This approach depends on the distinctiveness of industrially produced methyl bromide. Our delta(13)C measurements of industrial CH3Br from the three largest manufacturers worldwide yield a weighted average of -54.4 parts per thousand relative to the Peedee Belemnite standard. This result suggests that industrial CH3Br is isotopically distinct and that the carbon isotopic composition of atmospheric CH3Br may indicate what fraction of atmospheric CH3Br is anthropogenic. C1 Univ Calif Berkeley, Dept Environm Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Policy & Management MC 3110, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Geol & Geophys MC 4767, Berkeley, CA 94720 USA. EO Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Goldstein, AH (reprint author), Univ Calif Berkeley, Dept Environm Sci, Berkeley, CA 94720 USA. RI Goldstein, Allen/A-6857-2011 OI Goldstein, Allen/0000-0003-4014-4896 NR 41 TC 29 Z9 30 U1 2 U2 9 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD AUG 31 PY 1999 VL 96 IS 18 BP 10006 EP 10009 DI 10.1073/pnas.96.18.10006 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 233JQ UT WOS:000082424100016 PM 10468552 ER PT J AU Crofts, AR Hong, SJ Ugulava, N Barquera, B Gennis, R Guergova-Kuras, M Berry, EA AF Crofts, AR Hong, SJ Ugulava, N Barquera, B Gennis, R Guergova-Kuras, M Berry, EA TI Pathways for proton release during ubihydroquinone oxidation by the bc(1) complex SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID IRON-SULFUR PROTEIN; ELECTRON-TRANSFER; BOVINE HEART; UBIQUINOL-CYTOCHROME-C2 OXIDOREDUCTASE; RHODOPSEUDOMONAS-SPHAEROIDES; RHODOBACTER-SPHAEROIDES; 2FE-2S CLUSTER; QUINONE POOL; CYTOCHROME-B; BC1 COMPLEX AB Quinol oxidation by the bc(1) complex of Rhodobacter sphaeroides occurs from an enzyme-substrate complex formed between quinol bound at the Q(o), site and the iron-sulfur protein (ISP) docked at an interface on cytochrome b, From the structure of the stigmatellin-containing mitochondrial complex, we suggest that hydrogen bonds to the two quinol hydroxyl groups, from Glu-272 of cytochrome b and His-161 of the ISP, help to stabilize the enzyme-substrate complex and aid proton release. Reduction of the oxidized ISP involves H transfer from quinol, Release of the proton occurs when the acceptor chain reoxidizes the reduced ISP, after domain movement to an interface on cytochrome cl. Effects of mutations to the ISP that change the redox potential and/or the pK on the oxidized form support this mechanism. Structures for the complex in the presence of inhibitors show two different orientations of Glu-272, In stigmatellin-containing crystals, the side chain points into the site, to hydrogen bond with a ring hydroxyl, while His-161 hydrogen bonds to the carbonyl group. In the native structure, or crystals containing myxothiazol or beta-methoxyacrylate-type inhibitors, the Glu-272 side chain is rotated to point out of the site, to the surface of an external aqueous channel. Effects of mutation at this residue suggest that this group is involved in ligation of stigmatellin and quinol, but not quinone, and that the carboxylate function is essential for rapid turnover. H+ transfer from semiquinone to the carboxylate side chain and rotation to the position found in the myxothiazol structure provide a pathway for release of the second proton. C1 Univ Illinois, Ctr Biophys & Computat Biol, Urbana, IL 61801 USA. Univ Illinois, Dept Biochem, Urbana, IL 61801 USA. Univ Illinois, Dept Microbiol, Urbana, IL 61801 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Crofts, AR (reprint author), Univ Illinois, Ctr Biophys & Computat Biol, 388 Morrill Hall,505 S Goodwin, Urbana, IL 61801 USA. FU NIDDK NIH HHS [DK 44842, R01 DK044842]; NIGMS NIH HHS [R01 GM035438, GM 35438] NR 39 TC 129 Z9 131 U1 2 U2 6 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD AUG 31 PY 1999 VL 96 IS 18 BP 10021 EP 10026 DI 10.1073/pnas.96.18.10021 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 233JQ UT WOS:000082424100019 PM 10468555 ER PT J AU Liu, HC Mao, XL Yoo, JH Russo, RE AF Liu, HC Mao, XL Yoo, JH Russo, RE TI Nonlinear changes in plasma and crater properties during laser ablation of Si SO APPLIED PHYSICS LETTERS LA English DT Article ID ATOMIC EMISSION-SPECTROSCOPY; SPECTROMETRY; VAPORIZATION; DENSITY AB A dramatic change in plasma characteristics, as well as a significant increase in the quantity of ablated mass were observed at a laser power density threshold of 20 GW/cm(2). The electron number density and temperature of the laser-induced plasma show dramatic changes in their nonlinear behavior in the range of 2-80 GW/cm(2). The crater volume undergoes some type of phase explosion at the threshold. Mechanisms such as inverse bremsstrahlung and self-regulation were used to describe the behavior below threshold. Self-focusing and critical temperature are discussed to explain the dramatic changes at the threshold. (C) 1999 American Institute of Physics. [S0003-6951(99)02935-6]. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Liu, HC (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 15 TC 21 Z9 21 U1 2 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 1999 VL 75 IS 9 BP 1216 EP 1218 DI 10.1063/1.124646 PG 3 WC Physics, Applied SC Physics GA 228BV UT WOS:000082117000010 ER PT J AU Merkulov, VI Lowndes, DH Baylor, LR AF Merkulov, VI Lowndes, DH Baylor, LR TI Field-emission studies of smooth and nanostructured carbon films SO APPLIED PHYSICS LETTERS LA English DT Article ID TETRAHEDRAL AMORPHOUS-CARBON; DIAMOND AB Electron field-emission measurements of carbon films prepared by pulsed-laser deposition (PLD) and hot-filament chemical-vapor deposition (HF-CVD) are reported. Smooth PLD carbon films, with both high- and low-sp(3) contents, appear to be poor field emitters. In contrast, HF-CVD carbon exhibits very good field-emission properties, including the emission turn-on field as low as 9 V/mu m, high emission site density, and excellent durability. In addition, HF-CVD was carried out at temperatures below 600 degrees C, compatible with the use of glass substrates. The promising field-emission properties of HF-CVD carbon are attributed to the nanostructured nature of this material. (C) 1999 American Institute of Physics. [S0003-6951(99)02235-4]. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Fus Energy, Oak Ridge, TN 37831 USA. RP Merkulov, VI (reprint author), Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. EM merkulov@solid.ssd.ornl.gov NR 19 TC 34 Z9 37 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 1999 VL 75 IS 9 BP 1228 EP 1230 DI 10.1063/1.124650 PG 3 WC Physics, Applied SC Physics GA 228BV UT WOS:000082117000014 ER PT J AU Gibson, JK AF Gibson, JK TI Laser ablation synthesis of actinide selenide, oxide and oxide-selenide clusters: AnSe(n)(+), An(x),O-m(+) and An(x)O(m)Se(n)(+) [An = U, Np, Pu] SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE laser ablation; actinides; clusters ID GAS-PHASE; MASS-SPECTROMETRY; ORGANOMETALLIC CHEMISTRY; INFRARED-SPECTRA; METAL-IONS; TEMPERATURE; VAPORIZATION; POLYIMIDE; CATIONS; MATRIX AB Actinide (An=U, Np, Pu) selenide, oxide and oxide-selenide molecular and cluster cations were synthesized by pulsed laser ablation of targets consisting of dilute mixtures of AnO(2) in a selenium matrix; selected lanthanides (Ln=Ho, Tm, Lu) were included for comparison. The compositions and abundance distributions of the molecules/clusters reflected distinctive f-element chemistries. Ablation of pure selenium resulted in Se-n(+) clusters with n=2-9; the abundance distribution is compared with the high-temperature Se-n equilibrium vapor composition. Several types of molecular and cluster ions were synthesized during the ablation process. Binary metal selenides, MSen+ (n>1), presumably formed primarily via electrostatic attraction between co-ablated Se-n and M+. The compositions of binary metal oxide clusters, MxOm+ (x less than or equal to 5) reflected the distinctive oxidation chemistries of the constituent metals. For the Ln(x)O(m)(+) Lu-III was the highest oxidation state, whereas for An(x)O(m)(+), oxidation states up to U-VI were exhibited. The formation of binary selenides and oxide clusters is attributed to the high volatility of selenium, which results in a dense ablation plume in which coalescence of MOy MOy+ Se-n. and Se-n(+) is promoted. Among the most abundant clusters were AnO(m)Se(n)(+) the compositions of most of which suggested aggregation of AnO(m)(+) with Se-n. The compositions of some AnO(m)Se(n)(+) indicated Se2- tons in analogy with O2-; thus, AnSe(+) and AnOSe(+) were produced along with AnO(+) and AnO(2)(+), whereas both AnO(2)Se(+) and AnO(3)(+) were absent. The compositions of other AnO(m)Se(n)(+), such as PuO3Se+, indicated O-Se bonding, such as occurs in selenites. The feasibility of synthesis of metal oxide cluster ions by co-ablation of oxides and poly(acrylic acid) was assessed for UO2 and Lu2O3. Oxide clusters were produced in appreciable quantities, but interpretation of the results was complicated by formation of complex ions from reactions with polymer fragments. Ablation of OH radicals resulted in species comprising M-(OH) as well as M=O moieties, the masses of which were often too similar to allow for definitive differentiation. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RP Gibson, JK (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 53 TC 3 Z9 3 U1 3 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD AUG 30 PY 1999 VL 290 IS 1-2 BP 52 EP 62 DI 10.1016/S0925-8388(99)00128-0 PG 11 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 232QE UT WOS:000082380800013 ER PT J AU Akella, J Weir, ST Vohra, YK Prokop, H Catledge, SA Chesnut, GN AF Akella, J Weir, ST Vohra, YK Prokop, H Catledge, SA Chesnut, GN TI High pressure phase transformations in neodymium studied in a diamond anvil cell using diamond-coated rhenium gaskets SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID GPA AB Diamond anvil cells are used to generate high static pressures up to several megabars (hundreds of GPa) in very small volumes of material. We have explored a technique which employs a microwave plasma chemical vapour deposited diamond layer on one side of the rhenium gasket. The high yield strength of the diamond layer prevents excessive thickness reduction of the sample in the gasket hole. As a test case, we show energy dispersive x-ray diffraction data on rare earth metal neodymium to high pressures of 153 GPa using a synchrotron source. The increased sample thickness results in an unambiguous crystal structure determination of a monoclinic phase in neodymium above 75 GPa. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Alabama, Dept Phys, Birmingham, AL 35294 USA. RP Akella, J (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Weir, Samuel/H-5046-2012 NR 11 TC 14 Z9 14 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD AUG 30 PY 1999 VL 11 IS 34 BP 6515 EP 6520 DI 10.1088/0953-8984/11/34/303 PG 6 WC Physics, Condensed Matter SC Physics GA 237JN UT WOS:000082652600004 ER PT J AU Mathew, MD Lietzan, LM Murty, KL Shah, VN AF Mathew, MD Lietzan, LM Murty, KL Shah, VN TI Low temperature aging embrittlement of CF-8 stainless steel SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE low temperature aging; aging-induced embrittlement; CF-8 stainless steel; automated ball indentation (ABI); fracture ID PRESSURE-VESSEL STEELS; ATOM-PROBE; FRACTURE-TOUGHNESS; CAST; BEHAVIOR; CF3 AB Cast stainless steels such as CF-8 are used for several components such as pump and valve casings, elbows, fittings and primary coolant pipes in nuclear power plants. CF-8 stainless steel has a duplex microstructure consisting of austenite and about 15-20% delta-ferrite. Long-term exposure at the reactor operating temperatures results in aging-induced embrittlement of the material due to spinodal decomposition of the ferrite phase. In this paper, we report the effects of low temperature aging (673 K) up to 18 months on the mechanical and fracture properties of cast CF-8 stainless steel in the range of 173-423 K. These studies have been carried out using non-destructive ball indentation tests. Standard Charpy and tensile tests were also carried out to complement the ball indentation data. Increase in strength and decrease in toughness have been observed following aging. These changes in the properties tend to saturate on aging for more than 12 months. (C) 1999 Elsevier Science S.A. All rights reserved. C1 N Carolina State Univ, Raleigh, NC 27695 USA. Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Murty, KL (reprint author), N Carolina State Univ, Raleigh, NC 27695 USA. EM murty@ncsu.edu NR 37 TC 32 Z9 37 U1 2 U2 11 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD AUG 30 PY 1999 VL 269 IS 1-2 BP 186 EP 196 DI 10.1016/S0921-5093(99)00140-9 PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 230XL UT WOS:000082276900023 ER PT J AU Angadi, M Gosztola, D Wasielewski, MR AF Angadi, M Gosztola, D Wasielewski, MR TI Organic light emitting diodes using poly(phenylenevinylene) doped with perylenediimide electron acceptors SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article DE organic light emitting diodes; poly(phenylenevinylene); perylenediimide electron acceptors ID SOLAR-CELLS; POLYMERS; ELECTROLUMINESCENCE; DEVICES; BLENDS; FILMS AB The performance of organic light emitting diodes (OLEDs) based on BEH-PPV(1,4-bis(2-ethylhexyloxy)phenylenevinylene) doped with a perylenediimide (PDI) electron acceptor is reported. The turn on voltage and emission intensity are dependent on doping level, cathode material and polymer thickness. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. RP Angadi, M (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 22 TC 55 Z9 58 U1 1 U2 10 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD AUG 30 PY 1999 VL 63 IS 3 BP 191 EP 194 DI 10.1016/S0921-5107(99)00082-3 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 222JB UT WOS:000081780200001 ER PT J AU Anglin, JR Zurek, WH AF Anglin, JR Zurek, WH TI Vortices in the wake of rapid Bose-Einstein condensation SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUANTUM KINETIC-THEORY; COSMOLOGICAL EXPERIMENTS; VORTEX FORMATION; SUPERFLUID HE-3; MASTER EQUATION; SYMMETRY BREAKS; COSMIC STRINGS; SIMULATION; SYSTEMS; DILUTE AB A second order phase transition induced by a rapid quench can inject far more topological defects into the ordered phase than would appear in equilibrium. We use quantum kinetic theory to show that this mechanism, originally postulated in the cosmological context, and analyzed so far only on the mean field classical level, should allow spontaneous generation of vortex lines in trapped Bose-Einstein condensates of simple topology, or of winding number in toroidal condensates. C1 Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Univ Innsbruck, Inst Theoret Phys, Technikerstr 25, A-6020 Innsbruck, Austria. NR 22 TC 63 Z9 63 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1707 EP 1710 DI 10.1103/PhysRevLett.83.1707 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600002 ER PT J AU Budker, D Kimball, DF Rochester, SM Yashchuk, VV AF Budker, D Kimball, DF Rochester, SM Yashchuk, VV TI Nonlinear magneto-optics and reduced group velocity of light in atomic vapor with slow ground state relaxation SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTROMAGNETICALLY INDUCED TRANSPARENCY; PROPAGATION AB The dynamics of resonant light propagation in rubidium vapor in a cell with antirelaxation wall coating are investigated. We change the polarization of the input light and measure the time dependence of the polarization after the cell. The observed dynamics are shown to be analogous to those in electromagnetically induced transparency. Spectral dependence of light pulse delays is found to be similar to that of nonlinear magneto-optic rotation. Delays up to approximate to 13 ms are observed, corresponding to a 8 m/s group velocity. Fields of a few microgauss are used to control the group velocity. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. BP Konstantinov Nucl Phys Inst, Gatchina 188350, Russia. RP Budker, D (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Budker, Dmitry/F-7580-2016 OI Budker, Dmitry/0000-0002-7356-4814 NR 16 TC 479 Z9 492 U1 1 U2 26 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1767 EP 1770 DI 10.1103/PhysRevLett.83.1767 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600017 ER PT J AU Moody, JD MacGowan, BJ Glenzer, SH Kirkwood, RK Kruer, WL Schmitt, AJ Williams, EA Stone, GF AF Moody, JD MacGowan, BJ Glenzer, SH Kirkwood, RK Kruer, WL Schmitt, AJ Williams, EA Stone, GF TI First measurement of short length-scale density fluctuations in a large laser plasma SO PHYSICAL REVIEW LETTERS LA English DT Article ID STIMULATED BRILLOUIN-SCATTERING; INERTIAL CONFINEMENT FUSION; BEAM; FILAMENTATION; WAVES AB The technique of near forward laser scattering is used for the first time in an ignition-relevant laser plasma to obtain a background and laser driven fluctuation spectrum. The fluctuations cause beam spray which can affect the symmetry in an inertial confinement fusion experiment. These results provide a benchmark for developing numerical models of beam spray. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. USN, Res Lab, Washington, DC 20375 USA. RP Moody, JD (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 21 TC 25 Z9 25 U1 0 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1783 EP 1786 DI 10.1103/PhysRevLett.83.1783 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600021 ER PT J AU Xie, JJ Chen, SP AF Xie, JJ Chen, SP TI Diffusion and clustering in heavily arsenic-doped silicon: Discrepancies and explanation SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRICAL DEACTIVATION; IMPURITY DIFFUSION; COMPLEX; SYSTEMS AB Very different concentration dependences of As diffusivity in heavily doped silicon have been observed, but a consistent explanation of the underlying atomic-scale process is lacking. We present an extensive first-principles study on the As-vacancy interactions in heavily doped silicon in terms of which we have explained quantitatively the driving mechanism of the observed enhanced diffusion and revealed the time dependence of the redistribution of dopant atoms. By checking the details of As-vacancy interaction potential and the time dependence of diffusion and clustering, we find that the discrepancies between different experiments and between different atomistic simulations eventually disappear. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Xie, JJ (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 21 TC 50 Z9 50 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1795 EP 1798 DI 10.1103/PhysRevLett.83.1795 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600024 ER PT J AU Siddharthan, R Shastry, BS Ramirez, AP Hayashi, A Cava, RJ Rosenkranz, S AF Siddharthan, R Shastry, BS Ramirez, AP Hayashi, A Cava, RJ Rosenkranz, S TI Ising pyrochlore magnets: Low-temperature properties, "ice rules," and beyond SO PHYSICAL REVIEW LETTERS LA English DT Article ID ANTIFERROMAGNET; FRUSTRATION; TB2MO2O7; LATTICE; LIQUID; ORDER AB Pyrochlore magnets are candidates for what Harris et al. [Phys. Rev. Lett. 79, 2554 (1997)] call "spin-ice" behavior. We present theoretical simulations of relevance for the pyrochlore family R2Ti2O7 (R = rare earth) supported by magnetothermal measurements on selected systems. Ey considering long-ranged dipole-dipole as well as short-ranged superexchange interactions, we get three distinct behaviors: (i) an ordered doubly degenerate state, (ii) a highly disordered state with a broad transition to paramagnetism, and (iii) a partially ordered state with a sharp transition to paramagnetism. Closely corresponding behavior is seen in the real compounds. C1 Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India. AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA. Princeton Univ, Dept Chem, Princeton, NJ 08540 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60436 USA. RP Siddharthan, R (reprint author), Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India. RI Rosenkranz, Stephan/E-4672-2011 OI Rosenkranz, Stephan/0000-0002-5659-0383 NR 18 TC 159 Z9 159 U1 5 U2 33 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1854 EP 1857 DI 10.1103/PhysRevLett.83.1854 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600039 ER PT J AU Stohr, J Scholl, A Regan, TJ Anders, S Luning, J Scheinfein, MR Padmore, HA White, RL AF Stohr, J Scholl, A Regan, TJ Anders, S Luning, J Scheinfein, MR Padmore, HA White, RL TI Images of the antiferromaguetic structure of a NiO(100) surface by means of X-ray magnetic linear dichroism spectromicroscopy SO PHYSICAL REVIEW LETTERS LA English DT Article ID CIRCULAR-DICHROISM; ABSORPTION; FILMS; NIO; SPECTROSCOPY; MOMENTS; SPECTRA; DOMAINS; ORDER AB We present the first images of a surface showing clear antiferromagnetic contrast. The images were obtained for 10-80 nm thicIc NiO(100) films grown on Mg(100) by means of x-ray magnetic linear dichroism spectroscopy in conjunction with high resolution photoelectron emission microscopy. The surface sensitive images with a lateral resolution of better than 50 nm reveal surface line defects that exhibit antiferromagnetic order with a reduced Neel temperature (455 K) relative to the rest of the film surface and the bulk (523 K). Analysis of the temperature dependent images allows us to separate the spin and charge components of the linear dichroism effect. C1 IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA. Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. RP Stohr, J (reprint author), IBM Corp, Almaden Res Ctr, Div Res, 650 Harry Rd, San Jose, CA 95120 USA. RI Scholl, Andreas/K-4876-2012; Raoux, Simone/G-3920-2016 NR 22 TC 122 Z9 123 U1 1 U2 23 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1862 EP 1865 DI 10.1103/PhysRevLett.83.1862 PG 4 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600041 ER PT J AU Anderson, JD Laing, PA Lau, EL Liu, AS Nieto, MM Turyshev, SG AF Anderson, JD Laing, PA Lau, EL Liu, AS Nieto, MM Turyshev, SG TI Prosaic explanation for the anomalous accelerations seen in distant spacecraft - Reply SO PHYSICAL REVIEW LETTERS LA English DT Article C1 CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Aerospace Corp, El Segundo, CA 90245 USA. Astrodynam Sci, Los Angeles, CA 90039 USA. Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Anderson, JD (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA. NR 4 TC 21 Z9 21 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1891 EP 1891 DI 10.1103/PhysRevLett.83.1891 PG 1 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600049 ER PT J AU Anderson, JD Laing, PA Lau, EL Liu, AS Nieto, MM Turyshev, SG AF Anderson, JD Laing, PA Lau, EL Liu, AS Nieto, MM Turyshev, SG TI Comment on "Indication, from Pioneer 10/11, Galileo, and Ulysses data, of an apparent anomalous, weak, long-range acceleration" - Reply SO PHYSICAL REVIEW LETTERS LA English DT Article C1 CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Aerospace Corp, El Segundo, CA 90245 USA. Astrodynam Sci, Los Angeles, CA 90039 USA. Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Ulm, Abt Quantenphys, D-86069 Ulm, Germany. RP Anderson, JD (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA. NR 5 TC 18 Z9 20 U1 2 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 30 PY 1999 VL 83 IS 9 BP 1893 EP 1893 DI 10.1103/PhysRevLett.83.1893 PG 1 WC Physics, Multidisciplinary SC Physics GA 230GC UT WOS:000082242600051 ER PT J AU Schweizer, S Calmes, S Laudon, M Renaud, P AF Schweizer, S Calmes, S Laudon, M Renaud, P TI Thermally actuated optical microscanner with large angle and low consumption SO SENSORS AND ACTUATORS A-PHYSICAL LA English DT Article; Proceedings Paper CT Eurosensors XII Meeting CY SEP 13-16, 1998 CL SOUTHAMPTON, ENGLAND DE optical microscanner; bimorph; silicon micromachining ID MIRRORS; SILICON; ARRAY AB A monolithic silicon integrated optical micro-scanner is presented. The device consists of a mirror located on the tip of a thermal bimorph actuator beam. The fabrication process is very simple and compatible with IC fabrication techniques. The device is excited electrothermally at its resonance frequency, enabling large angular deflections at low power consumption. The technological process consists of basic frontside silicon micromachining steps requiring only three mask levels. The moving part is defined by selective silicon bulk etching. The bimorph beam is made of silicon dioxide and a thin film conductor. The residual stress in the two layers is used to achieve a 45 degrees out-of-plane rest position of the mirror. This allows optical components (e.g., laser diode, collimating lens) to be placed directly on the silicon substrate. Mirrors of 500 x 300 to 800 x 800 mu m(2) with resonant frequencies varying from 600 to 100 Hz were realized. Mechanical scan angles of above 90 degrees were achieved. The devices are very robust and have run through fatigue tests of billions of cycles at 300 Hz and 90 degrees deflection. The power consumption of the device is typically 1 mW for 30 degrees mirror deflection. (C) 1999 Elsevier Science S.A. All rights reserved. C1 Swiss Fed Inst Technol, Inst Microsyst, CH-1015 Lausanne, Switzerland. Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA. Motorola, Los Alamos Natl Lab, Los Alamos, NM USA. RP Schweizer, S (reprint author), Swiss Fed Inst Technol, Inst Microsyst, CH-1015 Lausanne, Switzerland. RI Renaud, P/A-6994-2011 OI Renaud, P/0000-0001-5199-1252 NR 19 TC 66 Z9 67 U1 0 U2 8 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0924-4247 J9 SENSOR ACTUAT A-PHYS JI Sens. Actuator A-Phys. PD AUG 30 PY 1999 VL 76 IS 1-3 BP 470 EP 477 DI 10.1016/S0924-4247(99)00012-6 PG 8 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA 260AB UT WOS:000083925200075 ER PT J AU Aksoy, IA Ramsey, MJ Fruman, DA Aksoy, S Cantley, LC Tucker, JD Roberts, TM AF Aksoy, IA Ramsey, MJ Fruman, DA Aksoy, S Cantley, LC Tucker, JD Roberts, TM TI Mouse phosphoinositide 3-Kinase p110 alpha gene: Cloning, structural organization, and localization to chromosome 3 band B SO BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS LA English DT Article ID HUMAN PHOSPHATIDYLINOSITOL 3-KINASE; REGULATORY SUBUNIT; KINASE-ACTIVITY; P85-ALPHA GENE; GROWTH-FACTOR; INSULIN; SIGNAL; IDENTIFICATION; ACTIVATION; ENZYME AB Phosphoinositide 3-Kinases (PI3-Kinases) are a family of dual specificity enzymes with a unique lipid kinase activity toward the D-3 position of the inositol ring of phosphoinositides and a less well characterized serine/threonine protein kinase activity. Class IA PI3-Kinases comprise a 110-120 kDa catalytic subunit (usually termed p110) and an 85 kDa or 50 to 55 kDa regulatory subunit (often called p85). cDNAs for three mammalian Class IA PI3-Kinase catalytic subunits designated p110 alpha; p110 beta, and p110 delta have been cloned from several species. A YAC clone for the human p110 alpha gene has also been cloned and mapped to chromosome 3q26.3. However, structural organization for any of the PI3-Kinase p110 alpha genes has not been reported. Here, we report the cloning, structural organization, and chromosomal localization of the mouse PI3-Kinase p110 alpha gene. The translated portion of the mouse p110 alpha gene is encoded by 19 exons that span at least 24 kb. Dual color fluorescence in situ hybridization (FISH) was performed to determine the chromosomal localization of the mouse PI3-Kinase p110 alpha gene. FISH results and DAPI banding demonstrated localization of the p110 alpha gene to band B on mouse chromosome 3, a region syntenic with human chromosome 3q26.3. (C) 1999 Academic Press. C1 Harvard Univ, Sch Med, Dana Farber Canc Inst, Dept Canc Biol, Boston, MA 02115 USA. Harvard Univ, Sch Med, Dept Pathol, Boston, MA 02115 USA. Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Boston, MA 02115 USA. Beth Israel Deaconess Med Ctr, Div Signal Transduct, Boston, MA 02115 USA. Harvard Univ, Sch Med, Dept Cell Biol, Boston, MA 02115 USA. RP Roberts, TM (reprint author), Harvard Univ, Sch Med, Dana Farber Canc Inst, Dept Canc Biol, 1 Jimmy Fund Way, Boston, MA 02115 USA. RI Cantley, Lewis/D-1800-2014 OI Cantley, Lewis/0000-0002-1298-7653 FU NCI NIH HHS [CA 73155, CA30002]; NIGMS NIH HHS [R01 GM041890, GM41890] NR 37 TC 5 Z9 6 U1 0 U2 2 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0006-291X J9 BIOCHEM BIOPH RES CO JI Biochem. Biophys. Res. Commun. PD AUG 27 PY 1999 VL 262 IS 2 BP 438 EP 442 DI 10.1006/bbrc.1999.1150 PG 5 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 232AF UT WOS:000082343000024 PM 10462494 ER PT J AU Krueger, BP Yom, J Walla, PJ Fleming, GR AF Krueger, BP Yom, J Walla, PJ Fleming, GR TI Observation of the S-1 state of spheroidene in LH2 by two-photon fluorescence excitation SO CHEMICAL PHYSICS LETTERS LA English DT Article ID LIGHT-HARVESTING COMPLEX; PIGMENT-PROTEIN COMPLEXES; ENERGY-GAP LAW; EXCITED-STATES; RHODOPSEUDOMONAS-ACIDOPHILA; PHAEODACTYLUM-TRICORNUTUM; CRYSTAL-STRUCTURE; CAROTENOIDS; DYNAMICS; FEMTOSECOND AB The two-photon fluorescence excitation spectrum of LH2, measured by directly exciting the carotenoid S-1 transition and monitoring fluorescence from the bacteriochlorophyll, provides the first direct experimental verification of carotenoid S-1 to bacteriochlorophyll energy transfer. It also provides an estimate of the in situ spheroidene S-1 transition energy of 13 900 +/- 150 cm(-1), slightly red-shifted from solution estimates. The relative abilities of the carotenoids spheroidene (10 conjugated double bonds) and rhodopin glucoside (11 conjugated double bonds) to transfer energy via their S-1 states are discussed in terms of spectral overlap factors and competing processes such as S-1 --> S-0 internal conversion. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Fleming, GR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM fleming@cchem.berkeley.edu NR 35 TC 46 Z9 50 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 EI 1873-4448 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 27 PY 1999 VL 310 IS 1-2 BP 57 EP 64 DI 10.1016/S0009-2614(99)00729-0 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 232QA UT WOS:000082380400010 ER PT J AU McCarter, BE Bililign, S Feigerle, CS Miller, JC AF McCarter, BE Bililign, S Feigerle, CS Miller, JC TI Nanochemistry: Iron cluster reactions with methyl iodide SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID VELOCITY-RESOLVED MEASUREMENTS; GAS-PHASE; PHOTODISSOCIATION DYNAMICS; MULTIPHOTON IONIZATION; 248 NM; MOLECULAR CLUSTERS; MASS-SPECTROMETRY; ALKYL-HALIDES; NITRIC-OXIDE; METAL-IONS AB Previous experiments have shown that the ionization/dissociation of iron pentacarbonyl clusters can lead to the formation of iron ions and iron cluster ions and that these species can further react with dopant molecules to yield chemically rearranged products. The present experiments characterize similar reactions with methyl iodide molecules and clusters. Heteroclusters of the form [Fe(CO)(5)](m)(CH3I)(n)Ar-p are created in an expanding supersonic jet of the component molecules. Following ionization by a 30 ps, 266 nm laser pulse, extensive dissociation, aggregation, and chemical rearrangement occur leading to ionic products which ate characterized by mass spectrometry. Cluster ions of the type FemIn+, Fe(CH3I)(n)(+), and FeIm(CH3I)(n)(+) are observed as products. The stability of the binary parent ion Fe(CH3I)(+) is demonstrated for the first time. C1 Oak Ridge Natl Lab, Biochem & Biophys Sect, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RP Miller, JC (reprint author), Oak Ridge Natl Lab, Biochem & Biophys Sect, POB 2008, Oak Ridge, TN 37831 USA. NR 47 TC 4 Z9 4 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 1999 VL 103 IS 34 BP 6740 EP 6745 DI 10.1021/jp991380h PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 231WY UT WOS:000082335400007 ER PT J AU Dimitrijevic, NM Henglein, A Meisel, D AF Dimitrijevic, NM Henglein, A Meisel, D TI Charge separation across the silica nanoparticle/water interface SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Letter ID RADIATION; CHEMISTRY; RADICALS; DIOXIDE; TIO2 AB Aqueous suspensions of silica particles at high concentrations were irradiated with a short pulse of electrons in the presence of scavengers of OH radicals. The scavengers were chosen to minimize their adsorption on the particle surface. It was found that essentially no holes cross the particle/water interface to generate OH radicals. All of the holes that are originally generated by the ionizing radiation in the silica remain in the particle; even at the smallest size used (7-nm diameter). This is contrasted with electrons, which were earlier shown to escape the particles into the water, even at much larger particle sizes. C1 Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA. RP Meisel, D (reprint author), Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. NR 14 TC 37 Z9 37 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD AUG 26 PY 1999 VL 103 IS 34 BP 7073 EP 7076 DI 10.1021/jp991378q PG 4 WC Chemistry, Physical SC Chemistry GA 231XB UT WOS:000082335700004 ER PT J AU Latturner, SE Sachleben, J Iversen, BB Hanson, J Stucky, GD AF Latturner, SE Sachleben, J Iversen, BB Hanson, J Stucky, GD TI Covalent guest-frame work interactions in heavy metal sodalites: Structure and properties of thallium and silver sodalite SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID QUADRUPOLE COUPLING-CONSTANT; POWDER DIFFRACTION DATA; MAS-NMR-SPECTROSCOPY; ANGLE-SPINNING NMR; SOLID-STATE NMR; ALUMINOSILICATE-SODALITES; CHEMICAL-SHIFTS; CRYSTAL-STRUCTURE; LONE-PAIR; STEREOCHEMICAL ACTIVITY AB Covalent bonds between the heavy metal cations and the aluminosilicate framework have been discovered to be the cause of distinct structural characteristics in anhydrous sodalites Ag-6[AlSiO4](6) and Tl-6[AlSiO4](6) that differ significantly from their alkali metal containing analogues. Evidence of guest-framework bonding interactions include interatomic distances, shifted IR bands, and quadrupole coupling of aluminum. This bonding results in a reduction of the unit cell size, and a locked in static disorder of the cations. Also of interest are the short Tl-Tl distances seen in Tl-6[AlSiO4](6). These could indicate the formation of Tl-3(3+) species in each cage, resulting in a bce lattice of ionic thallium clusters. Low-temperature synchrotron powder diffraction data, multiple quantum magic-angle spinning (MQ-MAS) NMR, and FTIR studies are presented. C1 Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA. Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. Aarhus Univ, Dept Chem, DK-8000 Aarhus, Denmark. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Stucky, GD (reprint author), Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA. RI Hanson, jonathan/E-3517-2010 NR 70 TC 20 Z9 20 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD AUG 26 PY 1999 VL 103 IS 34 BP 7135 EP 7144 DI 10.1021/jp990898i PG 10 WC Chemistry, Physical SC Chemistry GA 231XB UT WOS:000082335700013 ER PT J AU Hoffman, GG AF Hoffman, GG TI Effects of bond stretching on polymer statistics SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article AB A probability distribution for polymer chain end-to-end separation is derived that incorporates the effects of bond stretching and bending. Each bond is represented by a spring with an equilibrium length that can stretch and contract according to a harmonic force law. Such a model is expected to be important for the description of polymeric materials under large deformations. Methods for computing the distribution and related quantities are derived and are shown to be robust and realistic. Computed distributions show noticeable differences from more commonly used models that do not have a dependence on the bond strengths. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Florida Int Univ, Dept Chem, Miami, FL 33199 USA. RP Hoffman, GG (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM ggh@dft.fiu.edu NR 25 TC 8 Z9 8 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD AUG 26 PY 1999 VL 103 IS 34 BP 7167 EP 7174 DI 10.1021/jp991017a PG 8 WC Chemistry, Physical SC Chemistry GA 231XB UT WOS:000082335700017 ER PT J AU Robinson, BC Barkigia, KM Renner, MW Fajer, J AF Robinson, BC Barkigia, KM Renner, MW Fajer, J TI Molecular structure and spectroscopy of a bacteriopurpurin. A new class of bacteriochlorin photosensitizers SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID PHOTOSYNTHETIC REACTION-CENTER; PRIMARY CHARGE SEPARATION; METHYL BACTERIOPHEOPHORBIDE; RHODOPSEUDOMONAS-VIRIDIS; CATION RADICALS; INTERMEDIATE NEGLECT; DIFFERENTIAL OVERLAP; PHOTODYNAMIC THERAPY; CRYSTAL-STRUCTURE; FREE BASE AB Bacteriochlorins mediate energy and electron transfer in vivo and serve as biomimetic models of bacterial photosynthesis. Recently, the same physicochemical properties of the chromophores have made them attractive as photosensitizers for photodynamic therapy, a medical treatment that combines light, porphyrins, and oxygen to attack and destroy malignant tissue. Despite this intense biophysical, chemical, and medicinal interest in bacteriochlorins, very few high precision structures of the chromophores exist to provide the basis for theoretical calculations that seek to predict their extensively studied physicochemical properties. We report hen the synthesis, spectral characterization, and structural determination of a metal-free bacteriopurpurin 1, a paradigm for a new class of photosensitizers comprised of porphyrins at the saturation level of bacteriochlorins flanked by two annelated, exocyclic cyclopentenyl rings. The molecule exhibits a very red-shifted Qy transition at 843 nm and is readily oxidized (at 0.39V vs SCE) to a pi cation radical with a distinctive EPR signal. The crystallographic results for 1 unambiguously identify the bacteriopurpurin, provide the first stereochemical parameters for this new class of expanded bacteriochlorins, extend the high resolution structural database for bacteriochlorins, and form the basis for theoretical calculations which correctly describe the optical features and electron density profile of 1 and its cation radical. C1 Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. Miravant Med Technol, Santa Barbara, CA 93117 USA. RP Robinson, BC (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. NR 47 TC 5 Z9 5 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD AUG 26 PY 1999 VL 103 IS 34 BP 7324 EP 7328 DI 10.1021/jp991138a PG 5 WC Chemistry, Physical SC Chemistry GA 231XB UT WOS:000082335700036 ER PT J AU Ungar, LW Newton, MD Voth, GA AF Ungar, LW Newton, MD Voth, GA TI Classical and quantum simulation of electron transfer through a polypeptide SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID DONOR-ACCEPTOR SYSTEMS; MOLECULAR-DYNAMICS; DISTANCE DEPENDENCE; TRANSFER RATES; SOLVENT REORGANIZATION; CANONICAL ENSEMBLE; EXCHANGE-REACTION; LASER-EXCITATION; METAL-COMPLEXES; ENTROPY CHANGES AB Quantum rate theory, molecular dynamics simulations, and semiempirical electronic structure calculations are used to fully investigate electron transfer mediated by a solvated polypeptide for the first time. Using a stationary-phase approximation, the nonadiabatic electron-transfer rate constant is calculated from the nuclear free energies and the electronic coupling between the initial and final states. The former are obtained from quantum path integral and classical molecular dynamics simulations; the latter are calculated using semiempirical electronic structure calculations and the generalized Mulliken-Hush method. Importantly, no parameters are fit to kinetic data. The simulated system consists of a solvated four-proline polypeptide with a tris(bipylidine)ruthenium donor group and an oxypentamminecobalt acceptor group. From the simulation data entropy and energy contributions to the free energies are distinguished. Quantum suppression of the barrier, including important solvent contributions, is demonstrated. Although free energy profiles along the reaction coordinate are nearly parabolic, pronounced departures from harmonic behavior are found for the separate energy and entropy functions. Harmonic models of the system are compared to simulation results in order to quantify anharmonic effects. Electronic structure calculations show that electronic coupling elements vary considerably with system conformation, even when the effective donor-acceptor separation remains roughly constant. The calculations indicate that electron transfer in a significant range of conformations linking the polypeptide to the acceptor may contribute to the overall rate constant. After correction for Limitations of the solvent model, the simulations and calculations agree well with the experimental activation energy and Arrhenius prefactor. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA. Univ Utah, Henry Eyring Ctr Theoret Chem, Salt Lake City, UT 84112 USA. RP Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 71 TC 70 Z9 70 U1 1 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD AUG 26 PY 1999 VL 103 IS 34 BP 7367 EP 7382 DI 10.1021/jp991057e PG 16 WC Chemistry, Physical SC Chemistry GA 231XB UT WOS:000082335700041 ER PT J AU Clemons, WM May, JLC Wimberly, BT McCutcheon, JP Capel, MS Ramakrishnan, V AF Clemons, WM May, JLC Wimberly, BT McCutcheon, JP Capel, MS Ramakrishnan, V TI Structure of a bacterial 30S ribosomal subunit at 5.5 angstrom resolution SO NATURE LA English DT Article ID RNA-BINDING-SITE; ESCHERICHIA-COLI; THERMUS-THERMOPHILUS; PROTEIN S15; CRYSTAL-STRUCTURE; BACILLUS-STEAROTHERMOPHILUS; NMR-SPECTROSCOPY; CROSS-LINKING; MESSENGER-RNA; 16S RNA AB The 30S ribosomal subunit binds messenger RNA and the anticodon stem-loop of transfer RNA during protein synthesis. A crystallographic analysis of the structure of the subunit from the bacterium Thermos thermophilus is presented, At a resolution of 5.5 Angstrom, the phosphate backbone of the ribosomal RNA is visible, as are the cu-helices of the ribosomal proteins, enabling double-helical regions of RNA to be identified throughout the subunit, all seven of the small-subunit proteins of known crystal structure to be positioned in the electron density map, and the fold of the entire central domain of the small-subunit ribosomal RNA to be determined. C1 MRC, Mol Biol Lab, Structural Studies Div, Cambridge CB2 2QH, England. Univ Utah, Sch Med, Dept Biochem, Salt Lake City, UT 84103 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Ramakrishnan, V (reprint author), MRC, Mol Biol Lab, Structural Studies Div, Hills Rd, Cambridge CB2 2QH, England. RI Clemons, William/D-1026-2009 FU NIGMS NIH HHS [F31 GM019384] NR 50 TC 278 Z9 296 U1 1 U2 12 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 26 PY 1999 VL 400 IS 6747 BP 833 EP 840 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 230CA UT WOS:000082233200035 PM 10476960 ER PT J AU Ban, N Nissen, P Hansen, J Capel, M Moore, PB Steitz, TA AF Ban, N Nissen, P Hansen, J Capel, M Moore, PB Steitz, TA TI Placement of protein and RNA structures into a 5 angstrom-resolution map of the 50S ribosomal subunit SO NATURE LA English DT Article ID ELONGATION-FACTOR-G; ESCHERICHIA-COLI RIBOSOME; CRYSTAL-STRUCTURE; CROSS-LINKING; 23S RNA; EF-TU; DOMAIN; LOOP; VISUALIZATION; ARRANGEMENT AB We have calculated at 5.0 Angstrom resolution an electron-density map of the large 50S ribosomal subunit from the bacterium Haloarcula marismortui by using phases derived from four heavy-atom derivatives, intercrystal density averaging and density-modification procedures. More than 300 base pairs of A-form RNA duplex have been fitted into this map, as have regions of non-A-form duplex, single-stranded segments and tetraloops. The long rods of RNA crisscrossing the subunit arise from the stacking of short, separate double helices, not all of which are A-form, and in many places proteins crosslink two or more of these rods. The polypeptide exit channel was marked by tungsten cluster compounds bound in one heavy-atom-derivatized crystal. We have determined the structure of the translation-factor-binding centre by fitting the crystal structures of the ribosomal proteins L6, L11 and L14, the sarcin-ricin loop RNA, and the RNA sequence that binds L11 into the electron density. We can position either elongation factor a or elongation factor Tu complexed with an aminoacylated transfer RNA and GTP onto the factor-binding centre in a manner that is consistent with results from biochemical and electron microscopy studies. C1 Yale Univ, Dept Mol Biophys & Biochem, New Haven, CT 06520 USA. Yale Univ, Dept Chem, New Haven, CT 06520 USA. Yale Univ, Howard Hughes Med Inst, New Haven, CT 06520 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Steitz, TA (reprint author), Yale Univ, Dept Mol Biophys & Biochem, POB 6666, New Haven, CT 06520 USA. RI Steitz, Thomas/C-6559-2009; Nissen, Poul/D-5774-2014; Carraro, Fabio/N-2613-2013 OI Carraro, Fabio/0000-0003-0771-042X NR 50 TC 326 Z9 352 U1 2 U2 7 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 26 PY 1999 VL 400 IS 6747 BP 841 EP 847 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 230CA UT WOS:000082233200036 PM 10476961 ER PT J AU Albright, CH Barr, SM AF Albright, CH Barr, SM TI Bimaximal mixing in an SO(10) minimal Higgs model SO PHYSICS LETTERS B LA English DT Article DE bimaximal mixing; quark and lepton mass matrices ID NEUTRINO OSCILLATIONS; MATTER AB An SO(10) SUSY GUT model was previously presented based on a minimal set of Higgs fields. The quark and lepton mass matrices derived fitted the data extremely well and led to large v(mu) - v(tau) mixing in agreement with the atmospheric neutrino data and to the small-angle MSW solution for the solar neutrinos. Here we show how a slight modification leading to a non-zero up quark mass can result in bimaximal mixing for the atmospheric and solar neutrinos. The "just-so'' vacuum solution is slightly favored over the large-angle MSW solution on the basis of the hierarchy required for the right-handed Majorana matrix and the more nearly-maximal mixing angles obtained. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. RP Albright, CH (reprint author), No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. OI Albright, Carl/0000-0002-2252-6359 NR 33 TC 77 Z9 77 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD AUG 26 PY 1999 VL 461 IS 3 BP 218 EP 223 DI 10.1016/S0370-2693(99)00854-0 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 233VW UT WOS:000082448700008 ER PT J AU Sohlberg, K Pennycook, SJ Pantelides, ST AF Sohlberg, K Pennycook, SJ Pantelides, ST TI Hydrogen and the structure of the transition aluminas SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID SUPPORTED METAL-CLUSTERS; ALCOHOL DEHYDRATION; FIRST-PRINCIPLES; SURFACE SITES; GAMMA-ALUMINA; GAMMA-AL2O3; CATALYSIS; ADSORPTION; MECHANISMS; DYNAMICS AB ex-Alumina results from the complete dehydration of several minerals of the form Al2O3. nH(2)O The "transition" aluminas, gamma-alumina, eta-alumina, and delta-alumina are known to have a spinel structure but the possibility that they contain hydrogen (H) has been the subject of debate. We present a series of density-functional theory calculations which, together with available experimental data, show that the spinel aluminas exist over a range of hydrogen content captured by the empirical formula H3mAl2-O-m(3), with different greek-letter phases corresponding to different distributions of the Aluminum (Al) ions on the two cation sublattices. Calculations of densities and vibrational frequencies of bulk OH bonds are in excellent agreement with available data. The theory reconciles seemingly inconsistent data and reveals a remarkable property of the spinel aluminas: They are "reactive sponges" in that they can store and release water in a reactive way. This chemical activity offers a basis for understanding long-standing puzzles in the behavior of aluminas in catalytic systems. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. RP Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. NR 45 TC 139 Z9 143 U1 6 U2 49 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 25 PY 1999 VL 121 IS 33 BP 7493 EP 7499 DI 10.1021/ja991098o PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 232WM UT WOS:000082393000005 ER PT J AU Labouriau, A Panjabi, G Enderle, B Pietrass, T Gates, BC Earl, WL Ott, KC AF Labouriau, A Panjabi, G Enderle, B Pietrass, T Gates, BC Earl, WL Ott, KC TI Xe-129 NMR spectroscopy of metal carbonyl clusters and metal clusters in zeolite NaY SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; ABSORPTION FINE-STRUCTURE; MONTE-CARLO SIMULATIONS; XE-N CLUSTERS; CHEMICAL-SHIFTS; Y-ZEOLITES; XENON-ADSORPTION; ALPHA-CAGES; PARTICLES; CATALYSTS AB [Ir-4(CO)(12)] and [Ir-6(CO)(16)] were synthesized in the pores of zeolite NaY by reductive carbonylation of sorbed [Ir(CO)(2)(acac)], and [Rh-6(CO)(16)] was similarly synthesized from [Rh(CO)(2)(acac)], The supported metal carbonyl clusters were decarbonylated to give supported clusters modeled on the basis of extended X-ray absorption fine structure spectra as Ir-4, Ir-6, and Rh-6, respectively. The supported metal carbonyl clusters and the supported metal clusters formed by their decarbonylation were investigated by Xe-129 NMR spectroscopy at temperatures in the range of 100-305 K. As the temperature increased, the chemical shift decreased. The curves representing the chemical shift as a function of temperature for xenon sorbed on the zeolite that contained clusters modeled as Ir-4, Ir6, and Rh-6 were all essentially the same and hardly different from that observed for the bare zeolite NaY. This comparison leads to the conclusion that xenon is less strongly adsorbed on the decarbonylated metal clusters than on the zeolite framework. Larger chemical shifts were observed for the zeolites containing the metal carbonyl clusters, with the largest being observed for the zeolite containing [Ir-4(CO)(12)] These results are explained on the basis of the cluster sizes and NaY zeolite geometry. We suggest that the contact between xenon and [Ir-4(CO)(12)] cluster is better than that between xenon and [Ir-6(CO)(16)] or xenon and [Rh-6(CO)(16)] clusters because these two larger clusters almost fill the zeolite supercages and exclude xenon, whereas [Ir-4(CO)(12)] in the supercages is small enough to allow entry of the xenon. C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. New Mexico Inst Min & Technol, Dept Chem, Socorro, NM 87801 USA. RP Labouriau, A (reprint author), Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Mail Stop J514, Los Alamos, NM 87545 USA. NR 43 TC 19 Z9 19 U1 2 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 25 PY 1999 VL 121 IS 33 BP 7674 EP 7681 DI 10.1021/ja990532j PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 232WM UT WOS:000082393000024 ER PT J AU Kuhl, TL Majewski, J Howes, PB Kjaer, K von Nahmen, A Lee, KYC Ocko, B Israelachvili, JN Smith, GS AF Kuhl, TL Majewski, J Howes, PB Kjaer, K von Nahmen, A Lee, KYC Ocko, B Israelachvili, JN Smith, GS TI Packing stress relaxation in polymer-lipid monolayers at the air-water interface: An X-ray grazing-incidence diffraction and reflectivity study SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ATTACHED POLY(ETHYLENE GLYCOL); SELF-ASSEMBLED MONOLAYERS; PROTEIN ADSORPTION; SURFACES; FORCES; PHOSPHOLIPIDS; HYDRATION; LIQUIDS; CHAINS AB Using synchrotron grazing-incidence X-ray diffraction (GIXD) and reflectivity (XR), we have determined the in-plane and out-of-plane structure of phospholipid monolayers at the air-water interface as a function of hydrophilic lipid headgroup size. Di-stearoyl-phosphatidyl-ethanolamine (DSPE) lipid monolayers were systematically modified by chemically grafting hydrophilic poly(ethylene glycol) (PEG) chains of MW = 90 g/mol (2 ethylene oxide, EO, units), MW = 350 g/mol (8 EO units), and MW = 750 g/mol(17 EO units) to the lipid headgroups. The monolayers were studied in the solid phase at a surface pressure of 42 mN/m. At these high lipid packing densities, the PEG chains are submerged in the water subphase. The increased packing stresses from these bulky polymer headgroups distort the unit cell and the in-plane packing modes of the monolayers, leading to large out-of-plane alterations and staggering of the lipid molecules. Surprisingly, a change in the molecular packing of the monolayer toward higher packing densities (lower area per molecule) was observed on increasing the PEG MW to 750 g/mol (17 EO units). This rearrangement of the monolayer structure may be due to a conformational change in the PEG chains. C1 Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. Riso Natl Lab, Dept Solid State Phys, DK-4000 Roskilde, Denmark. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Chicago, Dept Chem, Chicago, IL 60637 USA. RP Smith, GS (reprint author), Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RI Lujan Center, LANL/G-4896-2012 NR 35 TC 39 Z9 39 U1 1 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 25 PY 1999 VL 121 IS 33 BP 7682 EP 7688 DI 10.1021/ja991048j PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 232WM UT WOS:000082393000025 ER PT J AU Wiederrecht, GP Svec, WA Wasielewski, MR AF Wiederrecht, GP Svec, WA Wasielewski, MR TI Triplet states with unusual spin polarization resulting from radical ion pair recombination at short distances SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ELECTRON-PARAMAGNETIC-RESONANCE; REACTION CENTERS; LIQUID-CRYSTALS; PHOTOSYNTHESIS; TRIAD; MODEL C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Hebrew Univ Jerusalem, Farkas Ctr Light Induced Proc, IL-91904 Jerusalem, Israel. Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel. RP Wasielewski, MR (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 14 TC 29 Z9 30 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 25 PY 1999 VL 121 IS 33 BP 7726 EP 7727 DI 10.1021/ja991828s PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 232WM UT WOS:000082393000042 ER PT J AU Machonkin, TE Musci, G Zhang, HH di Patti, MCB Calabrese, L Hedman, B Hodgson, KO Solomon, EI AF Machonkin, TE Musci, G Zhang, HH di Patti, MCB Calabrese, L Hedman, B Hodgson, KO Solomon, EI TI Investigation of the anomalous spectroscopic features of the copper sites in chicken ceruloplasmin: Comparison to human ceruloplasmin SO BIOCHEMISTRY LA English DT Article ID MAGNETIC CIRCULAR-DICHROISM; RHUS-VERNICIFERA LACCASE; RAY ABSORPTION-EDGE; ACTIVE-SITE; ASCORBATE OXIDASE; PHENOXAZINONE SYNTHASE; SACCHAROMYCES-CEREVISIAE; MAMMALIAN CERULOPLASMIN; BOVINE CERULOPLASMIN; REDUCTION POTENTIALS AB Chicken ceruloplasmin has been previously reported to display a number of key differences relative to human ceruloplasmin: a lower copper content and a lack of a type 2 copper signal by electron paramagnetic resonance (EPR) spectroscopy. We have studied the copper sites of chicken ceruloplasmin in order to probe the origin of these differences, focusing on two forms of the enzyme: "resting" (as isolated by a fast, one-step procedure) and "peroxide-oxidized''. From X-ray absorption, EPR, and UV/visible absorption spectroscopies, we have shown that all of the copper sites are oxidized in peroxide-oxidized chicken ceruloplasmin and that none of the type 1 copper sites display the EPR features typical for type 1 copper sites that lack an axial methionine. In the resting form, the type 2 copper center is reduced. Upon oxidation, it does not appear in the EPR spectrum at 77 K, but it can be observed by using magnetic susceptibility, EPR at similar to 8 K, and magnetic circular dichroism spectroscopy. It displays unusually fast relaxation, indicative of coupling with the adjacent type 3 copper pair of the trinuclear copper cluster. From reductive titrations, we have found that the reduction potential of the type 2 center is higher than those of the other copper sites, thus explaining why it is reduced in the resting form. These results provide new insight into the nature of the additional type 1 copper sites and the redox distribution among copper sites in the different ceruloplasmins relative to other multicopper oxidases. C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Univ Messina, Dept Organ & Biol Chem, I-98166 Messina, Italy. Univ Rome La Sapienza, Dept Biochem Sci, I-00185 Rome, Italy. Univ Roma Tre, Dept Biol, I-00146 Rome, Italy. RP Solomon, EI (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA. RI Musci, Giovanni/H-2862-2012; Bonaccorsi di Patti, Maria Carmela/F-1198-2011 OI Musci, Giovanni/0000-0002-5196-709X; Bonaccorsi di Patti, Maria Carmela/0000-0002-4794-7037 FU NIDDK NIH HHS [DK31450]; PHS HHS [CHE-9423181] NR 59 TC 3 Z9 3 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 24 PY 1999 VL 38 IS 34 BP 11093 EP 11102 DI 10.1021/bi990280z PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 232AB UT WOS:000082342600021 PM 10460165 ER PT J AU Hall, DC Wu, H Kou, L Luo, Y Epstein, RJ Blum, O Hou, H AF Hall, DC Wu, H Kou, L Luo, Y Epstein, RJ Blum, O Hou, H TI Refractive index and hygroscopic stability of AlxGa1-xAs native oxides SO APPLIED PHYSICS LETTERS LA English DT Article ID THERMAL-OXIDATION AB We present prism coupling measurements on AlxGa1-xAs native oxides showing the dependence of refractive index on composition (0.3 less than or equal to x less than or equal to 0.97), oxidation temperature (400 less than or equal to T less than or equal to 500), and carrier gas purity. Index values range from n = 1.490 (x = 0.9, 400 degrees C) to 1.707 (x = 0.3, 500 degrees C). The oxides are shown to adsorb moisture, increasing their index by up to 0.10 (7%). Native oxides of AlxGa1-xAs (x less than or equal to 0.5) have index values up to 0.27 higher and are less hygroscopic when prepared with a small amount of O-2 in the N-2+H2O process gas. The higher index values are attributed to a transition from a hydroxide to a denser (AlxGa1-x)(2)O-3 oxide phase. (C) 1999 American Institute of Physics. [S0003-6951(99)00434-9]. C1 Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Hall, DC (reprint author), Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA. NR 15 TC 16 Z9 16 U1 2 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 1999 VL 75 IS 8 BP 1110 EP 1112 DI 10.1063/1.124612 PG 3 WC Physics, Applied SC Physics GA 226TH UT WOS:000082037500027 ER PT J AU Habermehl, S Nasby, RD Rightley, MJ AF Habermehl, S Nasby, RD Rightley, MJ TI Cycling endurance of silicon-oxide-nitride-oxide-silicon nonvolatile memory stacks prepared with nitrided SiO(2)/Si(100) interfaces SO APPLIED PHYSICS LETTERS LA English DT Article ID RADIATION RESPONSE; TRANSISTORS AB The effects of nitrided SiO(2)/Si(100) interfaces upon cycling endurance in silicon-oxide-nitride-oxide-silicon (SONOS) nonvolatile memory transistors are investigated. Analysis of metal-oxide-silicon field-effect transistor subthreshold characteristics indicate cycling degradation to be a manifestation of interface trap generation at the tunnel oxide/silicon interface. After 10(6) write/erase cycles, SONOS film stacks prepared with nitrided tunnel oxides exhibit enhanced cycling endurance over stacks prepared with non-nitrided tunnel oxides. If the capping oxide is formed by steam oxidation, rather than by deposition, SONOS stacks prepared with non-nitrided tunnel oxides exhibit endurance characteristics similar to stacks with nitrided tunnel oxides. For this case, a mechanism for latent nitridation of the tunnel oxide/silicon interface is proposed. (C) 1999 American Institute of Physics. [S0003-6951(99)04834-2]. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Habermehl, S (reprint author), Sandia Natl Labs, POB 5800,M-S 1084, Albuquerque, NM 87185 USA. EM sdhaber@sandia.gov NR 13 TC 6 Z9 7 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 1999 VL 75 IS 8 BP 1122 EP 1124 DI 10.1063/1.124616 PG 3 WC Physics, Applied SC Physics GA 226TH UT WOS:000082037500031 ER PT J AU Kozhevnikov, M Narayanamurti, V Mascarenhas, A Zhang, Y Olson, JM Smith, DL AF Kozhevnikov, M Narayanamurti, V Mascarenhas, A Zhang, Y Olson, JM Smith, DL TI Ordering-induced band structure effects in GaInP2 studied by ballistic electron emission microscopy SO APPLIED PHYSICS LETTERS LA English DT Article ID BURIED SEMICONDUCTOR HETEROSTRUCTURES; CHEMICAL VAPOR-DEPOSITION; CONDUCTION-BAND; ALLOYS; POLARIZATION; GA0.5IN0.5P; OFFSETS; SPECTROSCOPY; INTERFACES; TRANSPORT AB We have analyzed the second voltage derivative (SD) of the ballistic electron emission microscopy (BEEM) spectra of GaInP2. We associate two peaks observed in the SD-BEEM spectra of disordered GaInP2 on n(+) GaAs substrate with the Gamma and L conduction minima, Delta(Gamma-L)similar to 0.35 eV. An additional third peak appearing in the SD-BEEM spectrum of ordered GaInP2 (eta similar to 0.5) is associated with the L-band splitting due to the ordering-induced "folding" of one of the four L valleys onto the <(Gamma)over bar> point. According to our results, this splitting is similar to 0.13 eV. (C) 1999 American Institute of Physics. [S0003-6951(99)02434-1]. C1 Harvard Univ, Gordon McKay Lab, Cambridge, MA 02138 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kozhevnikov, M (reprint author), Harvard Univ, Gordon McKay Lab, Cambridge, MA 02138 USA. NR 28 TC 9 Z9 9 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 1999 VL 75 IS 8 BP 1128 EP 1130 DI 10.1063/1.124618 PG 3 WC Physics, Applied SC Physics GA 226TH UT WOS:000082037500033 ER PT J AU Zhou, JP McDevitt, JT Zhou, JS Yin, HQ Goodenough, JB Gim, Y Jia, QX AF Zhou, JP McDevitt, JT Zhou, JS Yin, HQ Goodenough, JB Gim, Y Jia, QX TI Effect of tolerance factor and local distortion on magnetic properties of the perovskite manganites SO APPLIED PHYSICS LETTERS LA English DT Article ID MAGNETORESISTANCE; TRANSPORT AB The substitutions of rare earths for La on the magnetic properties of the perovskites La(0.7-x)R(x)A(0.3)MnO(3) (0 < x < 0.7), R=Pr or Gd and A=Ca, Sr, or Ba have shown that small substitution of Pr slightly increases the coercive field H-c and magnetization M, and strongly improves the magnetoresistance (MR) while lowering T-c. On the other hand, the substitution of Gd lowers H-c, M and T-c, however, increases MR of the system La0.7-xGdxSr0.3MnO3 at temperature < T-c. Large differences in the A-site ionic radii r(A) of the AMnO(3) perovskites proved detrimental. The optimal composition has been discussed for the half-metallic ferromagnet of a spin-switch device based on the manganese oxides. (C) 1999 American Institute of Physics. [S0003-6951(99)02634-0]. C1 Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. Univ Texas, Ctr Mat Sci & Engn, Austin, TX 78712 USA. Univ Calif Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. RP Zhou, JP (reprint author), Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. RI Jia, Q. X./C-5194-2008; McDevitt, John/P-4108-2014; OI McDevitt, John/0000-0001-8789-9351; Goodenough, John Bannister/0000-0001-9350-3034 NR 12 TC 42 Z9 45 U1 2 U2 21 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 1999 VL 75 IS 8 BP 1146 EP 1148 DI 10.1063/1.124624 PG 3 WC Physics, Applied SC Physics GA 226TH UT WOS:000082037500039 ER PT J AU Jacob, J Lente, G Guzei, IA Espenson, JH AF Jacob, J Lente, G Guzei, IA Espenson, JH TI Monomerization of a rhenium(V) dimer by ligation SO INORGANIC CHEMISTRY LA English DT Article ID OXYGEN; ABSTRACTION; COMPLEXES AB Coordination of dmso to one of the originally equiva-detected, and the unsymmetrically coordinated adduct was characterized crystallographically. This unsymmetric complex is a key intermediate in the ligand-induced monomerization of the dimer D. A mechanism for monomerization is proposed from kinetics studies. C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. RP Espenson, JH (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. RI Lente, Gabor/H-3645-2011 NR 12 TC 27 Z9 27 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 23 PY 1999 VL 38 IS 17 BP 3762 EP + DI 10.1021/ic990370s PG 3 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 230FF UT WOS:000082240600004 ER PT J AU Henning, RW Corbett, JD AF Henning, RW Corbett, JD TI Formation of isolated nickel-centered gallium clusters in Na10Ga10Ni and a 2-D network of gallium octahedra in K2Ga3 SO INORGANIC CHEMISTRY LA English DT Article ID ZINTL PHASE; CRYSTAL-STRUCTURE; COMPOUND; ELEMENTS; ANALOGS; RB; CS; GA AB Exploration of the sodium-gallium-nickel system has revealed a new compound containing the isolated gallium clusters Ga10Ni10-. Single-crystal X-ray diffraction studies of Na10Ga10Ni (Pnma, Z = 12, a = 13.908(3) Angstrom, b = 78.146(6) Angstrom, c = 16.286(4) Angstrom) show it to be isostructural with K10In10Ni. The compound contains two similar "naked" gallium clusters as distorted, tetracapped trigonal prismatic units that are centered by nickel. The sodium atoms serve to isolate the clusters from each other as well as to provide the cluster with a closed shell configuration of electrons. This is the first isolated gallium cluster in an alkali-metal system that is centered. Molecular orbital calculations on the cluster are also reported. The crystal structure of K2Ga3 (I4/mmm, Z = 4, a = 6.1382(3) Angstrom, c = 14.815(1) Angstrom) has also been established to be isostructural with A(2)In(3) (A = Rb, Cs). This contains Ga-6(4-) octahedra interconnected through the waist atoms into layers (2)(infinity)[Ga-6(])4-, with octahedra in adjacent layers sitting in the depressions of the first. The potassium atoms have characteristic roles except for an unusually short K-K contact (3.242(4) Angstrom) across the layer. Magnetic measurements indicate that both phases are diamagnetic and consistent with the Zintl formalism. C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. RP Corbett, JD (reprint author), Iowa State Univ, Dept Chem, Ames, IA 50011 USA. NR 26 TC 36 Z9 36 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 23 PY 1999 VL 38 IS 17 BP 3883 EP 3888 DI 10.1021/ic990335l PG 6 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 230FF UT WOS:000082240600020 ER PT J AU McLuckey, SA AF McLuckey, SA TI Quadrupole ion trap mass spectrometry - Introduction SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Editorial Material C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP McLuckey, SA (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI McLuckey, Scott/B-2203-2009 OI McLuckey, Scott/0000-0002-1648-5570 NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD AUG 23 PY 1999 VL 191 BP VIII EP IX PG 2 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 229EE UT WOS:000082179900001 ER PT J AU Asano, KG Goeringer, DE Butcher, DJ McLuckey, SA AF Asano, KG Goeringer, DE Butcher, DJ McLuckey, SA TI Bath gas temperature and the appearance of ion trap tandem mass spectra of high-mass ions SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Article DE quadrupole ion trap; bath gas temperature; collisional activation; collisional relaxation; thermal dissociation ID INFRARED RADIATIVE DISSOCIATION; PEPTIDE IONS; COLLISIONAL ACTIVATION; UNIMOLECULAR DISSOCIATION; POLYATOMIC IONS; CLUSTER IONS; SPECTROMETRY; KINETICS; ENERGETICS; ENERGY AB Bath gas temperature effects upon the appearance of ion trap tandem mass spectra of protonated leucine enkephalin have been studied under a variety of ion activation conditions and over a bath gas temperature range of 298-486 K. Bath gas temperature was found to have two possible effects upon the identities and abundances of product ions observed in tandem mass spectra. At high parent ion dissociation rates (>10 s(-1)) and short activation times (<30 ms), bath gas temperature principally affects the appearance of tandem mass spectra via its role in determining the kinetics for first generation product ion cooling. In the case of protonated leucine enkephalin, this is primarily reflected in the extent to which the first generation b(4)(+) ion fragments further to yield the a(4)(+) ion, the energy supplied for this process arising from the parent ion internal energy. Bath gas temperature is most likely to be an important factor in the appearance of tandem mass spectra collected under the conditions just mentioned, when a first generation product ion tends to fragment at rates comparable to or greater than the parent ion dissociation rate. Ar low parent ion dissociation rates (>10 s(-1)), relatively long ion activation times (<100 ms), and elevated bath gas temperatures, dissociation resulting from thermal activation of the first and higher generation fragments can make significant contributions to the tandem mass spectra. (Int J Mass Spectrom 190/191 (1999) 281-293) (C) 1999 Elsevier Science B.V. C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RP McLuckey, SA (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RI McLuckey, Scott/B-2203-2009; Asano, Keiji/L-3164-2016 OI McLuckey, Scott/0000-0002-1648-5570; Asano, Keiji/0000-0003-2254-3586 NR 39 TC 24 Z9 24 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD AUG 23 PY 1999 VL 191 BP 281 EP 293 DI 10.1016/S1387-3806(98)14290-2 PG 13 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 229EE UT WOS:000082179900026 ER PT J AU Brooks, ML Chen, YK Cooper, MD Cooper, PS Dzemidzic, M Empl, A Gagliardi, CA Hogan, GE Hughes, EB Hungerford, EV Jui, CCH Knott, JE Koetke, DD Kroupa, MA Lan, KA Manweiler, R Mayes, BW Mischke, RE Piilonen, LE Stanislaus, TDS Stantz, KM Szymanski, JJ Tribble, RE Tu, XL Van Ausdeln, LA von Witsch, WH Wright, SC Ziock, KOH AF Brooks, ML Chen, YK Cooper, MD Cooper, PS Dzemidzic, M Empl, A Gagliardi, CA Hogan, GE Hughes, EB Hungerford, EV Jui, CCH Knott, JE Koetke, DD Kroupa, MA Lan, KA Manweiler, R Mayes, BW Mischke, RE Piilonen, LE Stanislaus, TDS Stantz, KM Szymanski, JJ Tribble, RE Tu, XL Van Ausdeln, LA von Witsch, WH Wright, SC Ziock, KOH CA MEGA Collaboration TI New limit for the lepton-family-number nonconserving decay mu(+) -> e(+)gamma SO PHYSICAL REVIEW LETTERS LA English DT Article ID RATE CYLINDRICAL MWPCS; MEGAS LOW-MASS; DETECTOR; CONSTRUCTION; SEARCH AB An experiment has been performed to search for the muon- and electron-number nonconserving decay mu(+) --> e(+)gamma. The upper limit for the branching ratio is found to be Gamma(mu(+) --> e(+)gamma)/Gamma(mu(+) --> e(+)nu<(nu)over bar>) < 1.2 X 10(-11) with 90% confidence. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Chicago, Chicago, IL 60637 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Houston, Houston, TX 77204 USA. Indiana Univ, Bloomington, IN 46383 USA. Stanford Univ, Stanford, CA 94305 USA. Texas A&M Univ, College Stn, TX 77843 USA. Valparaiso Univ, Valparaiso, IN 46383 USA. Univ Virginia, Charlottesville, VA 22901 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 11 TC 498 Z9 500 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1521 EP 1524 DI 10.1103/PhysRevLett.83.1521 PG 4 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400009 ER PT J AU Hayato, Y Earl, M Fukuda, Y Hayakawa, T Inoue, K Ishihara, K Ishino, H Itow, Y Kajita, T Kameda, J Kasuga, S Kobayashi, K Kobayashi, Y Koshio, Y Miura, M Nakahata, M Nakayama, S Obayashi, Y Okada, A Okumura, K Sakurai, N Shiozawa, M Suzuki, Y Takeuchi, K Takeuchi, Y Totsuka, Y Yamada, S Habig, A Kearns, E Messier, MD Scholberg, K Stone, JL Sulak, LR Walter, CW Goldhaber, M Barszczak, T Casper, D Gajewski, W Kropp, WR Mine, S Price, LR Smy, M Sobel, HW Vagins, MR Ganezer, KS Keig, WE Ellsworth, RW Tasaka, S Kibayashi, A Learned, JG Matsuno, S Stenger, VJ Takemori, D Ishii, T Kanzaki, J Kobayashi, T Nakamura, K Nishikawa, K Oyama, Y Sakai, A Sakuda, M Sasaki, O Echigo, S Kohama, M Suzuki, AT Haines, TJ Blaufuss, E Kim, BK Sanford, R Svoboda, R Chen, ML Goodman, JA Sullivan, GW Hill, J Jung, CK Martens, K Mauger, C McGrew, C Sharkey, E Viren, B Yanagisawa, C Doki, W Kirisawa, M Inaba, S Miyano, K Okazawa, H Saji, C Takahashi, M Takahata, M Higuchi, K Nagashima, Y Takita, M Yamaguchi, T Yoshida, M Kim, SB Etoh, M Hasegawa, A Hasegawa, T Hatakeyama, S Iwamoto, T Koga, M Maruyama, T Ogawa, H Shirai, J Suzuki, A Tsushima, F Koshiba, M Hatakeyama, Y Koike, M Nemoto, M Nishijima, K Fujiyasu, H Futagami, T Kanaya, Y Kaneyuki, K Watanabe, Y Kielczewska, D George, JS Stachyra, AL Wai, LL Wilkes, RJ Young, KK AF Hayato, Y Earl, M Fukuda, Y Hayakawa, T Inoue, K Ishihara, K Ishino, H Itow, Y Kajita, T Kameda, J Kasuga, S Kobayashi, K Kobayashi, Y Koshio, Y Miura, M Nakahata, M Nakayama, S Obayashi, Y Okada, A Okumura, K Sakurai, N Shiozawa, M Suzuki, Y Takeuchi, K Takeuchi, Y Totsuka, Y Yamada, S Habig, A Kearns, E Messier, MD Scholberg, K Stone, JL Sulak, LR Walter, CW Goldhaber, M Barszczak, T Casper, D Gajewski, W Kropp, WR Mine, S Price, LR Smy, M Sobel, HW Vagins, MR Ganezer, KS Keig, WE Ellsworth, RW Tasaka, S Kibayashi, A Learned, JG Matsuno, S Stenger, VJ Takemori, D Ishii, T Kanzaki, J Kobayashi, T Nakamura, K Nishikawa, K Oyama, Y Sakai, A Sakuda, M Sasaki, O Echigo, S Kohama, M Suzuki, AT Haines, TJ Blaufuss, E Kim, BK Sanford, R Svoboda, R Chen, ML Goodman, JA Sullivan, GW Hill, J Jung, CK Martens, K Mauger, C McGrew, C Sharkey, E Viren, B Yanagisawa, C Doki, W Kirisawa, M Inaba, S Miyano, K Okazawa, H Saji, C Takahashi, M Takahata, M Higuchi, K Nagashima, Y Takita, M Yamaguchi, T Yoshida, M Kim, SB Etoh, M Hasegawa, A Hasegawa, T Hatakeyama, S Iwamoto, T Koga, M Maruyama, T Ogawa, H Shirai, J Suzuki, A Tsushima, F Koshiba, M Hatakeyama, Y Koike, M Nemoto, M Nishijima, K Fujiyasu, H Futagami, T Kanaya, Y Kaneyuki, K Watanabe, Y Kielczewska, D George, JS Stachyra, AL Wai, LL Wilkes, RJ Young, KK CA Super Kamiokande Collaboration TI Search for proton decay through p -> (nu)over-barK(+) in a large water Cherenkov detector SO PHYSICAL REVIEW LETTERS LA English DT Article ID NUCLEON DECAY; LIFETIME; LIMITS; MASSES; MODELS AB We present results of a search for proton decays, p --> <(nu)over bar>K+, using data from a 33 kt . yr exposure of the Super-Kamiokande detector. Two decay modes of the kaon, K+ --> mu(+)nu(mu) and K+ --> pi(+)pi(0), were studied. The data were consistent with the background expected from atmospheric neutrinos; therefore a lower limit on the partial lifetime of the proton tau/B(p --> <(nu)over bar>K+) was found to be 6.7 X 10(32) years at 90% confidence level. C1 Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan. Boston Univ, Dept Phys, Boston, MA 02215 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Calif State Univ Dominguez Hills, Dept Phys, Carson, CA 90747 USA. George Mason Univ, Dept Phys, Fairfax, VA 22030 USA. Gifu Univ, Dept Phys, Gifu 5011193, Japan. Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA. KEK, High Energy Accelerator Res Org, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan. Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan. Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87544 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Univ Maryland, Dept Phys, College Pk, MD 20742 USA. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Niigata Univ, Dept Phys, Niigata 9502181, Japan. Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan. Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Univ Tokyo, Tokyo 1130033, Japan. Tokai Univ, Dept Phys, Hiratsuka, Kanagawa 2591292, Japan. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Univ Washington, Dept Phys, Seattle, WA 98195 USA. RP Hayato, Y (reprint author), Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. RI Takeuchi, Yasuo/A-4310-2011; Obayashi, Yoshihisa/A-4472-2011; Nakamura, Kenzo/F-7174-2010; Sobel, Henry/A-4369-2011; Suzuki, Yoichiro/F-7542-2010; Martens, Kai/A-4323-2011; Wilkes, R.Jeffrey/E-6011-2013; Kim, Soo-Bong/B-7061-2014; Sakurai, Nobuyuki/M-5009-2014; Ishino, Hirokazu/C-1994-2015; Koshio, Yusuke/C-2847-2015; Kibayashi, Atsuko/K-7327-2015 OI Sakurai, Nobuyuki/0000-0002-1002-217X; Ishino, Hirokazu/0000-0002-8623-4080; Koshio, Yusuke/0000-0003-0437-8505; NR 17 TC 105 Z9 106 U1 2 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1529 EP 1533 DI 10.1103/PhysRevLett.83.1529 PG 5 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400011 ER PT J AU Nielsen, E Macek, JH AF Nielsen, E Macek, JH TI Low-energy recombination of identical bosons by three-body collisions SO PHYSICAL REVIEW LETTERS LA English DT Article ID EINSTEIN AB The threshold recombination coefficient for three bosons whose two-body scattering length a is positive and large compared with the nominal range of the potentials is shown to proceed via a crossing of hyperspherical adiabatic potential curves at R approximate to 2.6a. The hidden crossing theory gives a simple expression for the rate in terms of the scattering length and a phase Delta. The phase depends upon the details of the interaction, and varies from species to species, however an upper limit to the rate which depends only upon the scattering length emerges from the hidden crossing theory. C1 Aarhus Univ, Inst Phys, DK-8000 Aarhus, Denmark. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Nielsen, E (reprint author), Aarhus Univ, Inst Phys, DK-8000 Aarhus, Denmark. NR 13 TC 181 Z9 181 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1566 EP 1569 DI 10.1103/PhysRevLett.83.1566 PG 4 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400020 ER PT J AU Albritton, JR Wilson, BG AF Albritton, JR Wilson, BG TI Non-LTE ionization and energy balance in high-Z laser plasmas including two-electron transitions SO PHYSICAL REVIEW LETTERS LA English DT Article ID SPECTROSCOPY AB We describe a new non-LTE average-atom-kinetics model of plasmas in which the two-electron transitions of autoionization and its inverse, resonant capture, play a dominant role in establishing ionization and energy balance. We show that, compared with a familiar collisional-radiative-equilibrium model for laser-produced gold plasmas: (1) the two-electron transitions force recombination of the plasma with decreasing density, and (2) the two-electron transitions nevertheless further act to greatly increase the radiative emissivity of the plasma. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Albritton, JR (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-41, Livermore, CA 94550 USA. NR 8 TC 21 Z9 28 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1594 EP 1597 DI 10.1103/PhysRevLett.83.1594 PG 4 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400027 ER PT J AU Birtcher, RC Donnelly, SE Song, M Furuya, K Mitsuishi, K Allen, CW AF Birtcher, RC Donnelly, SE Song, M Furuya, K Mitsuishi, K Allen, CW TI Behavior of crystalline Xe nanoprecipitates during coalescence SO PHYSICAL REVIEW LETTERS LA English DT Article ID ROOM-TEMPERATURE; ION IRRADIATION; ALUMINUM; PRECIPITATION; CLUSTERS AB In situ high-resolution electron microscopy has been used to observe nanoprecipitates of crystalline Xe in faceted cavities in Al during coalescence induced by 1.0 MeV electron irradiation at 300 K. Atomic-level fluctuations of cavity facets result in shape changes and precipitate motion leading to coalescence. There is no apparent elastic interaction between precipitates separated by as little as 0.5 nm. After coalescence, crystalline Xe conforms by plastic deformation without melting to changes in cavity shape. Cavity volume, not surface area, is conserved during coalescence, implying that cavity pressure is not determined solely by the interface tension. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Salford, Joule Phys Lab, Salford M5 4WT, Lancs, England. Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan. RP Birtcher, RC (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Donnelly, Stephen/0000-0002-9749-5550 NR 15 TC 37 Z9 38 U1 3 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1617 EP 1620 DI 10.1103/PhysRevLett.83.1617 PG 4 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400033 ER PT J AU Yeom, HW Shimomura, M Kitamura, J Hara, S Tono, K Matsuda, I Mun, BS Huff, WAR Kono, S Ohta, T Yoshida, S Okushi, H Kajimura, K Fadley, CS AF Yeom, HW Shimomura, M Kitamura, J Hara, S Tono, K Matsuda, I Mun, BS Huff, WAR Kono, S Ohta, T Yoshida, S Okushi, H Kajimura, K Fadley, CS TI Atomic and electronic-band structures of anomalous carbon dimers on 3C-SiC(001)-c(2 x 2) SO PHYSICAL REVIEW LETTERS LA English DT Article ID BETA-SIC(100) SURFACE; PHOTOELECTRON DIFFRACTION; RECONSTRUCTION AB The atomic structure of the c(2 X 2) reconstruction of the C-terminated 3C-SiC(001) surface was unambiguously determined by scanning tunneling microscopy and surface-core-level-resolved photoelectron diffraction studies. This surface is found to uniquely and uniformly consist of anomalous bridge-bonded C dimers with a C-C bond length of 1.22 Angstrom. Furthermore, an extensive angle-resolved photoemission study clearly identifies two occupied pi state bands due to the surface-normal and -parallel pi orbitals of the triple-bonded C dimers. This provides an electronic explanation of the stability of this unique surface reconstruction. C1 Univ Tokyo, Res Ctr Spectrochem, Tokyo 113, Japan. Tohoku Univ, Sci Measurements Res Inst, Sendai, Miyagi 98077, Japan. Electrotech Lab, Tsukuba, Ibaraki 305, Japan. Univ Tokyo, Dept Chem, Tokyo 113, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. KLA Tencor, Milpitas, CA 95035 USA. RP Yeom, HW (reprint author), Univ Tokyo, Res Ctr Spectrochem, Tokyo 113, Japan. RI Mun, Bongjin /G-1701-2013 NR 32 TC 47 Z9 47 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1640 EP 1643 DI 10.1103/PhysRevLett.83.1640 PG 4 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400039 ER PT J AU Kopta, S Barrena, E Ogleterre, DF Charych, DH Salmeron, M AF Kopta, S Barrena, E Ogleterre, DF Charych, DH Salmeron, M TI Comment on "relationship between friction and molecular structure: Alkylsilane lubricant films under pressure" - Kopta et al. reply SO PHYSICAL REVIEW LETTERS LA English DT Article C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Basel, Inst Phys, Basel, Switzerland. CSIC, Inst Ciencia Mat Madrid, Madrid, Spain. RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 2 TC 1 Z9 1 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 23 PY 1999 VL 83 IS 8 BP 1697 EP 1697 DI 10.1103/PhysRevLett.83.1697 PG 1 WC Physics, Multidisciplinary SC Physics GA 229CR UT WOS:000082176400057 ER PT J AU Abrams, MB Scott, BL Baker, RT AF Abrams, MB Scott, BL Baker, RT TI Cationic late metal complexes incorporating bis(arylamino)phosphenium ligands. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 163-INOR BP U760 EP U760 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902295 ER PT J AU Agnew, SF Clark, DL Donohoe, RJ Duval, PB Gordon, JC Keogh, DW Morris, DE Neu, MP Tait, CD AF Agnew, SF Clark, DL Donohoe, RJ Duval, PB Gordon, JC Keogh, DW Morris, DE Neu, MP Tait, CD TI Uranium aluminate speciation related to high-level waste tank remediation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Seaborg Inst Transactinium Sci, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 87-NUCL BP U1053 EP U1053 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903152 ER PT J AU Ahmad, I Greene, JP Kutschera, W Paul, M AF Ahmad, I Greene, JP Kutschera, W Paul, M TI Measurement of the Ti-44 half-life and its significance for supernova explosions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Vienna, A-1010 Vienna, Austria. Hebrew Univ Jerusalem, IL-91905 Jerusalem, Israel. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 131-NUCL BP U1066 EP U1067 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903196 ER PT J AU Ahmed, M Peterka, DS Suits, AG AF Ahmed, M Peterka, DS Suits, AG TI Imaging radical dissociation dynamics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Ernest Orlando Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 124-PHYS BP U309 EP U310 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000853 ER PT J AU Ainsworth, CC Zachara, JM Wagnon, K AF Ainsworth, CC Zachara, JM Wagnon, K TI Hanford sediment GS exchange in the presence of high [OH] and nitrate concentrations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Interfacial Geochem Grp, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 190-NUCL BP U1084 EP U1084 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903255 ER PT J AU Alam, TM Lang, DP AF Alam, TM Lang, DP TI Using heteronuclear MAS NMR correlations to probe the structure of phosphate glasses. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Dept Aging & Relaibil, Albuquerque, NM 87008 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 49-GEOC BP U659 EP U660 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901993 ER PT J AU Alivisatos, AP AF Alivisatos, AP TI Semiconductor nanocrystals as fluorescent biological labels. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 4 Z9 4 U1 5 U2 67 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 75-PHYS BP U296 EP U296 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000808 ER PT J AU Ammann, JR Britt, PF Buchanan, AC AF Ammann, JR Britt, PF Buchanan, AC TI Mechanistic investigation into the formation of polycyclic aromatic hydrocarbons from pyrolysis of biomass model compounds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 494-ORGN BP U165 EP U165 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000494 ER PT J AU Amonette, JE Holdren, GR Krupka, KM Lindenmeier, CW Amonette, AB AF Amonette, JE Holdren, GR Krupka, KM Lindenmeier, CW Amonette, AB TI Assessing the environmental availability of uranium in soils and sediments. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 103-NUCL BP U1058 EP U1058 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903168 ER PT J AU Amoureux, JP Pruski, M AF Amoureux, JP Pruski, M TI Structural analysis of catalysts by new high-resolution methods in solid-state NMR. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Sci & Tech Lille Flandres Artois, Lab Dynam & Struct Mat Mol, F-59655 Villeneuve Dascq, France. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 73-GEOC BP U667 EP U667 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902017 ER PT J AU Anastasiadis, SH Retsos, H Kunz, K Toprakcioglu, C Smith, G Hadziioannou, G Stamm, M AF Anastasiadis, SH Retsos, H Kunz, K Toprakcioglu, C Smith, G Hadziioannou, G Stamm, M TI Polymer brushes and mushrooms in polymeric matrices. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Heraklion 71110, Crete, Greece. Univ Patras, Patras, Greece. Univ Groningen, Groningen, Netherlands. Univ Calif Los Alamos Natl Lab, Los Alamos, NM USA. Max Planck Inst Polymerforsch, Mainz, Germany. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 560-POLY BP U557 EP U558 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001701 ER PT J AU Anderson, KB Muntean, JV AF Anderson, KB Muntean, JV TI Application of multidimensional NMR to the investigation of polysesquiterpenoid resins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 13-GEOC BP U648 EP U648 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901957 ER PT J AU Angelici, RJ Gao, HR Yang, H Perera, A AF Angelici, RJ Gao, HR Yang, H Perera, A TI Combination catalysts consisting of rhodium complexes tethered on Pd/SiO2 for the hydrogenation of arenes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 567-INOR BP U883 EP U883 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902677 ER PT J AU Antonio, MR Soderholm, L Williams, CW AF Antonio, MR Soderholm, L Williams, CW TI Electrochemical and structural properties of actinide polyoxoanion complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 90-NUCL BP U1054 EP U1054 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903155 ER PT J AU Arnold, J Peters, DW Bourret, ED AF Arnold, J Peters, DW Bourret, ED TI Thermolysis of aluminum hydrazides: N-N-bond cleavage and cage formation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 432-INOR BP U841 EP U841 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902546 ER PT J AU Assefa, Z Haire, RG Stump, NA AF Assefa, Z Haire, RG Stump, NA TI Spectroscopic studies of F-elements in silicates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, CASD, Oak Ridge, TN 37831 USA. Winston Salem State Univ, Dept Phys Sci, Winston Salem, NC 27110 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 167-NUCL BP U1078 EP U1078 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903232 ER PT J AU Assefa, Z Haire, RG Stump, NA AF Assefa, Z Haire, RG Stump, NA TI Photoluminescence of einsteinium in silicate matrix. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, CASD, Oak Ridge, TN 37831 USA. Winston Salem Stat Univ, Dept Phys Sci, Winston Salem, NC 27110 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 11-INOR BP U714 EP U714 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902147 ER PT J AU Autrey, T Camaioni, DM AF Autrey, T Camaioni, DM TI Thermochemical kinetic analysis of thermal pathways for oxidation of organic complexants in high-level wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm & Hlth Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 53-NUCL BP U1043 EP U1043 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903118 ER PT J AU Autrey, T Foster, N AF Autrey, T Foster, N TI Experimental approaches to measure the chemical and physical properties of radical intermediates: Time-resolved photoacoustic calorimetry with a layered prism cell. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 13-FUEL BP U606 EP U606 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901829 ER PT J AU Baisden, PA AF Baisden, PA TI ACS Division of Nuclear Chemistry and Technology's "summer schools in nuclear and radiochemistry." SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 136-NUCL BP U1068 EP U1068 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903201 ER PT J AU Baker, RT Carter, CAG Tumas, W Josephsohn, N Haar, CM Smith, D Nolan, SP AF Baker, RT Carter, CAG Tumas, W Josephsohn, N Haar, CM Smith, D Nolan, SP TI Rhodium(I) complexes with phosphorus ligands containing partially fluorinated "pigtails" as catalysts for hydrogenation and hydroboration of alkenes in supercritical carbon dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div CST18, Los Alamos, NM 87545 USA. Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA. RI Nolan, Steven/C-8465-2013 OI Nolan, Steven/0000-0001-9024-2035 NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 568-INOR BP U883 EP U883 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902678 ER PT J AU Baker, RT Broene, RD Boncella, JM Cameron, TM AF Baker, RT Broene, RD Boncella, JM Cameron, TM TI Whence the winning? Metal-catalyzer diboration of carbonyl compounds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Bowdoin Coll, Dept Chem, Brunswick, ME 04011 USA. Univ Florida, Dept Chem, Gainesville, FL 32611 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 423-INOR BP U837 EP U838 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902534 ER PT J AU Balmer, ML Su, Y Bitten, E Navrotsky, A Xu, H Nenoff, T AF Balmer, ML Su, Y Bitten, E Navrotsky, A Xu, H Nenoff, T TI Phase selection, crystal structure, and durability of Cs-silicotitanates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99353 USA. Univ Calif Davis, Davis, CA 95616 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 70-NUCL BP U1048 EP U1048 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903135 ER PT J AU Baratian, SA Hall, ES Lin, JS Runt, J AF Baratian, SA Hall, ES Lin, JS Runt, J TI Crystallization and solid-state structure of poly(lactide) copolymers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. Cargill Dow Inc, Minneapolis, MN 55440 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 172-PMSE BP U651 EP U651 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001967 ER PT J AU Barr, ME Jarvinen, GD Marsh, SF Moody, EW Chamberlin, RM Bartsch, RA Zhao, WY AF Barr, ME Jarvinen, GD Marsh, SF Moody, EW Chamberlin, RM Bartsch, RA Zhao, WY TI New anion-exchange resins for improved separations of nuclear materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. RI Chamberlin, Rebecca/A-1335-2011 OI Chamberlin, Rebecca/0000-0001-6468-7778 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 107-NUCL BP U1059 EP U1059 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903172 ER PT J AU Bartels, DM AF Bartels, DM TI Reactions of atomic hydrogen in water: Solvent and isotope effects. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 54-FUEL BP U619 EP U619 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901870 ER PT J AU Baumann, TF Reynolds, JG Fox, GA AF Baumann, TF Reynolds, JG Fox, GA TI Polymer pendant crown thioethers: Synthesis, characterization, and Hg2+ extraction studies of polymer-supported thiacrowns. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 114-INOR BP U745 EP U745 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902246 ER PT J AU Beach, DB Morrell, JS Xue, ZLB AF Beach, DB Morrell, JS Xue, ZLB TI Epitaxial growth of multicationic thin films on single-crystal substrates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 541-INOR BP U876 EP U876 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902652 ER PT J AU Bernard, JG Schroeder, NC Clark, DL Ashley, KR Blanchard, DL Conradson, SD AF Bernard, JG Schroeder, NC Clark, DL Ashley, KR Blanchard, DL Conradson, SD TI Fundamental chemistry, characterization, and separation of technetium complexes in Hanford waste. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Pacific NW Lab, Richland, WA 99352 USA. Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 201-NUCL BP U1088 EP U1088 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903266 ER PT J AU Bibler, NE Fellinger, TL AF Bibler, NE Fellinger, TL TI Identification and measurement of radionuclides in HLW glass to meet a repository acceptance regulation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Westinghouse Savannah River Co, Savannah River Technol Ctr, Aiken, SC 29808 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 12-NUCL BP U1031 EP U1031 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903077 ER PT J AU Blazer, CA Marley, NA Drayton, PJ Gaffney, JS AF Blazer, CA Marley, NA Drayton, PJ Gaffney, JS TI Real-time olefin monitor based on ozone chemiluminescent reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 144-CHED BP U282 EP U282 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900794 ER PT J AU Boger, JT AF Boger, JT TI DOE/ACS Summer School at Brookhaven National Laboratory. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 138-NUCL BP U1068 EP U1068 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903203 ER PT J AU Boncella, JM Cameron, TM Baker, RT Scott, BL AF Boncella, JM Cameron, TM Baker, RT Scott, BL TI Synthesis and reactivity of Mo(IV) nu(2)-imine complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Florida, Dept Chem, Gainesville, FL 32610 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 172-INOR BP U763 EP U763 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902304 ER PT J AU Bond, AH Dietz, ML Herlinger, AW Chiarizia, R Hay, BP AF Bond, AH Dietz, ML Herlinger, AW Chiarizia, R Hay, BP TI Influence of diluent solvation properties on synergistic solvent extraction by dialkylphosphoric acids and dicyclohexano-18-crown-6. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Loyola Univ, Chicago, IL 60226 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 24-IEC BP U682 EP U683 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902056 ER PT J AU Bopp, A Montante, S Diegelmann, RF Goheen, S AF Bopp, A Montante, S Diegelmann, RF Goheen, S TI Design, preparation, and activity of cotton gauze for use in chronic wound research. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USDA ARS, So Reg Res Ctr, New Orleans, LA 70124 USA. VCU, MCV, Wound Healing Inst, Richmond, VA USA. Pacific NW Natl Lab, Richland, WA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 11-CELL BP U215 EP U215 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900586 ER PT J AU Botto, RE Stec, D Gregory, DM AF Botto, RE Stec, D Gregory, DM TI Probing polymer architecture by magnetic resonance microscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 59-GEOC BP U663 EP U663 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902003 ER PT J AU Boyd, GG AF Boyd, GG TI Environmental management science program, one facet of a balanced solution-based investment strategy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 15-NUCL BP U1031 EP U1032 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903080 ER PT J AU Brechbiel, MW Deal, KA Chappell, LL Dadachova, E Davis, I Mirzadeh, S Kennel, SJ AF Brechbiel, MW Deal, KA Chappell, LL Dadachova, E Davis, I Mirzadeh, S Kennel, SJ TI Development of a bifunctional chelating agent suitable for radioimmunotherapy using actinium-225. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NCI, NIH, Bethesda, MD 20892 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Dadachova, Ekaterina/I-7838-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 173-MEDI BP U970 EP U970 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902921 ER PT J AU Brinker, CJ AF Brinker, CJ TI New directions in sol-gel processing: Evaporation-induced self-assembly of porous and composite media. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 11-PRES BP U734 EP U734 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034002214 ER PT J AU Britt, PF Buchanan, AC Eskay, TP Mungall, WS AF Britt, PF Buchanan, AC Eskay, TP Mungall, WS TI Mechanistic investigations into the decarboxylation of aromatic carboxylic acids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Sci, Oak Ridge, TN 37831 USA. Hope Coll, Dept Chem, Holland, MI 49422 USA. NR 0 TC 0 Z9 0 U1 4 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 59-FUEL BP U620 EP U620 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901875 ER PT J AU Brooks, SC Carroll, SL Jardine, PM AF Brooks, SC Carroll, SL Jardine, PM TI Sustained bacterial reduction of Co(III)EDTA in the presence of competing geochemical oxidation during dynamic flow. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RI Brooks, Scott/B-9439-2012 OI Brooks, Scott/0000-0002-8437-9788 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 191-NUCL BP U1084 EP U1084 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903256 ER PT J AU Brown, C Martinez, MA AF Brown, C Martinez, MA TI Neutron source recovery summary at the Los Alamos Plutonium facility. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 17-TECH BP U380 EP U380 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901134 ER PT J AU Brown, DC Lowe, ML Holley-Shanks, R Maeder, D Rogers, YH Brockman, F Robb, FT AF Brown, DC Lowe, ML Holley-Shanks, R Maeder, D Rogers, YH Brockman, F Robb, FT TI Rapid turnover of microbial indicator species in polluted groundwater during bioremediation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Syst Maryland, Ctr Marine Biotechnol, Baltimore, MD 21202 USA. Loyola Coll, Baltimore, MD 21210 USA. Celera Inc, Gaithersburg, MD USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 194-NUCL BP U1085 EP U1085 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903259 ER PT J AU Brown, GE Chambers, SA Amonette, JE Dixon, DA Kendelewicz, T Joyce, SA Rustad, JR Thevuthasan, S Liu, P Grolimund, D Foster-Mills, NS Yi, SI AF Brown, GE Chambers, SA Amonette, JE Dixon, DA Kendelewicz, T Joyce, SA Rustad, JR Thevuthasan, S Liu, P Grolimund, D Foster-Mills, NS Yi, SI TI Molecular-level processes governing the interaction of aqueous chromium with iron oxides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Geol & Environm Sci, Surface & Aqueous Geochem Grp, Stanford, CA 94305 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Joyce, Stephen/Q-7804-2016 OI Joyce, Stephen/0000-0003-1330-7362 NR 0 TC 1 Z9 1 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 17-NUCL BP U1032 EP U1032 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903082 ER PT J AU Brown, GM Bonnesen, PV Moyer, BA Gu, BH Alexandratos, SD Patel, V AF Brown, GM Bonnesen, PV Moyer, BA Gu, BH Alexandratos, SD Patel, V TI Design of selective resins for the removal of pertechnetate and perchlorate from groundwater. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Chem Analyt Sci Div, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37996 USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 26-ENVR BP U551 EP U551 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901668 ER PT J AU Brown, GM Narula, PM Sloop, FV Meyer, TJ AF Brown, GM Narula, PM Sloop, FV Meyer, TJ TI Electrocatalytic enrichment of isotopes of hydrogen in protio- and deutero-formate in oxidation reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA. RI Sloop, Jr., Frederick/J-2301-2016 OI Sloop, Jr., Frederick/0000-0001-6473-9507 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 71-NUCL BP U1048 EP U1048 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903136 ER PT J AU Brush, LH Moore, RC Free, SJ Nowak, EJ AF Brush, LH Moore, RC Free, SJ Nowak, EJ TI WIPP actinide solubility model. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, WIPP Test & Anal Dept 6832, Albuquerque, NM 87185 USA. Sandia Natl Labs, Chem & Disposal Room Proc Dept 6831, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 26-NUCL BP U1034 EP U1035 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903091 ER PT J AU Buchanan, AC Britt, PF AF Buchanan, AC Britt, PF TI Consequences of surface confinement on free-radical chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 55-FUEL BP U619 EP U619 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901871 ER PT J AU Buelow, SJ Robinson, JR Ding, ZY Foy, BR Mosher, T Buckley, B McInroy, RE AF Buelow, SJ Robinson, JR Ding, ZY Foy, BR Mosher, T Buckley, B McInroy, RE TI Oxidative dissolution of chromium hydroxide by oxygen under hydrothermal conditions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 52-NUCL BP U1043 EP U1043 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903117 ER PT J AU Burleigh, MC Dai, S Xue, ZL Barnes, CE AF Burleigh, MC Dai, S Xue, ZL Barnes, CE TI Functionalized mesoporous silica sorbents for the selective removal of copper(II) from aqueous solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Univ Tennessee, Oak Ridge Natl Lab, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 176-NUCL BP U1080 EP U1080 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903241 ER PT J AU Burnett, MN Buchanan, AC Gakh, AA AF Burnett, MN Buchanan, AC Gakh, AA TI Modular chemical descriptor language and unique structure representation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 36-CINF BP U361 EP U361 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901073 ER PT J AU Burnham, CJ Xantheas, SS AF Burnham, CJ Xantheas, SS TI Parametrization of a flexible polarizable model for water using high-level first-principles results. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 300-PHYS BP U359 EP U359 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001023 ER PT J AU Burns, CJ Fickes, MG Scott, BL AF Burns, CJ Fickes, MG Scott, BL TI Development of synthetic strategies for the preparation of T-c complexes potentially relevant to tank waste and of methodology to immobilize T-c on solid supports. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 200-NUCL BP U1087 EP U1087 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903265 ER PT J AU Camaioni, DM Sharma, AK Linehan, JC Orlando, TM Zevos, N Meisel, D AF Camaioni, DM Sharma, AK Linehan, JC Orlando, TM Zevos, N Meisel, D TI Radiolytic effects on organic chemicals in high-level wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. SUNY Coll Potsdam, Dept Chem, Potsdam, NY 13676 USA. Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. Univ Notre Dame, Dept Biochem & Chem, Notre Dame, IN 46556 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 64-NUCL BP U1046 EP U1046 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903129 ER PT J AU Camaioni, DM Lilga, MA Bays, JT Linehan, JC Shaw, WJ Birnbaum, JC AF Camaioni, DM Lilga, MA Bays, JT Linehan, JC Shaw, WJ Birnbaum, JC TI Selective oxidation of alkanes promoted by copper ions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Washington, Dept Chem, Seattle, WA 98195 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 56-FUEL BP U619 EP U620 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901872 ER PT J AU Canas, LR AF Canas, LR TI Versatility of a web-based spent nuclear-fuel database. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Westinghouse Savannah River Co, Savannah River Site, Aiken, SC 29808 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 74-CINF BP U371 EP U371 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901111 ER PT J AU Caton, JE Bostick, DT Mabbott, GA Carr, PW AF Caton, JE Bostick, DT Mabbott, GA Carr, PW TI Separation and speciation of organic complexants in DOE wastes using HPLC on zirconia-based stationary phases and thermospray mass spectrometry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Univ Minnesota, Minneapolis, MN 55455 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 72-NUCL BP U1048 EP U1049 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903137 ER PT J AU Caulder, DL Allen, PG Bucher, JJ Craig, IM Darab, JG Davis, LL Edelstein, NM Li, H Li, L Liu, P Lukens, W Nitsche, H Rao, L Shuh, DK Strachan, D AF Caulder, DL Allen, PG Bucher, JJ Craig, IM Darab, JG Davis, LL Edelstein, NM Li, H Li, L Liu, P Lukens, W Nitsche, H Rao, L Shuh, DK Strachan, D TI Speciation of hafnium in peralkaline and peraluminous wasteform glasses using EXAFS spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Pacific NW Natl Lab, Richland, WA USA. RI Craig, Ian/C-3799-2009 OI Craig, Ian/0000-0003-4481-3700 NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 180-NUCL BP U1081 EP U1081 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903245 ER PT J AU Chandler, DW Lorenz, KT AF Chandler, DW Lorenz, KT TI Velocity map imaging of crossed-molecular beam scattering: The HCl-Ar system. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Div 8353, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 199-PHYS BP U330 EP U330 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000924 ER PT J AU Chen, LX Jager, WJH Gosztola, DJ Niemczyk, MP Wasielewski, MR AF Chen, LX Jager, WJH Gosztola, DJ Niemczyk, MP Wasielewski, MR TI pi-conjugation attenuated photoconducting polymers as an ensemble of chromophores. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Mol Photon Grp, Div Chem, Argonne, IL 60439 USA. Northwestern Univ, Evanston, IL 60208 USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 77-PHYS BP U296 EP U296 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000810 ER PT J AU Choi, CH Ivanic, J Gordon, MS Ruedenberg, K AF Choi, CH Ivanic, J Gordon, MS Ruedenberg, K TI Direct recurrence relations for the rapid and stable determination of rotation matrices between complex spherical harmonics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 233-PHYS BP U340 EP U340 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000958 ER PT J AU Choi, CH Gordon, MS AF Choi, CH Gordon, MS TI Cycloaddition reactions of 1,3-cyclohexadiene on silicon (001) surface using the SiMoMm: Diels-Alder or not? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 163-COMP BP U523 EP U523 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901597 ER PT J AU Clark, NC Ott, KC Paffett, MT AF Clark, NC Ott, KC Paffett, MT TI Reactivity and stability of zeolite-based, nonprecious metal deno(x) catalysts in simulated lean burn automobile exhaust. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, CST 18, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 95-INOR BP U739 EP U739 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902227 ER PT J AU Clark, SB Loyland, SM Navratil, J AF Clark, SB Loyland, SM Navratil, J TI Utility of chemical partitioning and speciation information in radioactive waste management decisions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington State Univ, Dept Chem, Pullman, WA 99164 USA. Lockheed Martin Idaho Technol Co, Idaho Falls, ID 83404 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 106-NUCL BP U1059 EP U1059 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903171 ER PT J AU Clavier, JW Barnes, CE Dai, S Xue, ZL AF Clavier, JW Barnes, CE Dai, S Xue, ZL TI Studies of strontium binding of phosphonate-functionalized sol-gels. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 469-INOR BP U852 EP U852 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902583 ER PT J AU Clearfield, A Sylvester, P Bluhm, E Bortun, A Bortun, L AF Clearfield, A Sylvester, P Bluhm, E Bortun, A Bortun, L TI Use of inorganic ion exchangers for nuclear waste remediation and industrial separations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA. Lynntech Inc, College Stn, TX 77840 USA. Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87544 USA. ASEC Mfg, Catoosa, OK USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 112-NUCL BP U1061 EP U1061 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903177 ER PT J AU Cline, JI Nestorov, VK Lorenz, T Chandler, DW AF Cline, JI Nestorov, VK Lorenz, T Chandler, DW TI Ion imaging measurements of angular correlations in photofragment trajectories. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Nevada, Dept Chem 216, Chem Phys Program, Reno, NV 89557 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 397-PHYS BP U385 EP U386 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001114 ER PT J AU Colvin, ME Tran, NL Grossman, JC Janssen, CL AF Colvin, ME Tran, NL Grossman, JC Janssen, CL TI Quantum chemical studies of C-36 and its hydrogenation products. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Sandia Natl Labs, Dept Comp Sci, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 136-COMP BP U516 EP U516 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901572 ER PT J AU Cooke, SJ Jackson, N AF Cooke, SJ Jackson, N TI Why you should be in the division of industrial & engineering chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Proc Syst Consulting, Berkeley Lake, GA 30096 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Alabama, Tuscaloosa, AL 35487 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 10-IEC BP U678 EP U678 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902042 ER PT J AU Cowin, JP Iedema, MJ Wu, K AF Cowin, JP Iedema, MJ Wu, K TI Hydronium ion motion: Tunneling and solvation effects. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA USA. RI Wu, Kai/A-4903-2011 OI Wu, Kai/0000-0002-5016-0251 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 428-PHYS BP U394 EP U394 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001145 ER PT J AU Crawford, SMN Earl, WL AF Crawford, SMN Earl, WL TI NMR relaxation times as a probe of cation mobility in zeolites. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Calif State Univ Sacramento, Dept Chem, Sacramento, CA 95819 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 341-PHYS BP U370 EP U370 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001063 ER PT J AU Creighton, JR AF Creighton, JR TI Surface science investigations of GaAsOMVPE using in situ optical diagnostics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Dept 1126, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 177-COLL BP U450 EP U451 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901370 ER PT J AU Curtiss, LA Zapol, P AF Curtiss, LA Zapol, P TI Electronic structure studies of the water-copper surface interface. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Zapol, Peter/G-1810-2012 OI Zapol, Peter/0000-0003-0570-9169 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 19-COLL BP U405 EP U405 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901213 ER PT J AU Czernik, S French, R Feik, C Chornet, E AF Czernik, S French, R Feik, C Chornet, E TI Production of hydrogen from biomass by pyrolysis/steam reforming. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 88-FUEL BP U629 EP U629 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901903 ER PT J AU Dabestani, R Ji, HF Brown, GM AF Dabestani, R Ji, HF Brown, GM TI Synthesis of 1,3-alternate calix[4]-di(anthrylmethyl)aza-crown-6: A highly selective optical sensor for cesium. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 127-NUCL BP U1065 EP U1066 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903192 ER PT J AU Dai, P Cebe, P Capel, M Alamo, R Mandelkern, L AF Dai, P Cebe, P Capel, M Alamo, R Mandelkern, L TI Self-nucleation study of metallocene isotactic poly(propylene). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. Florida State Univ, Dept Chem Engn, Tallahassee, FL 32310 USA. Florida State Univ, Dept Chem, Tallahassee, FL 32306 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 147-PMSE BP U643 EP U643 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001942 ER PT J AU Dai, S Burleigh, MC Ju, YH Waezsada, SD Xue, ZL Barnes, CE AF Dai, S Burleigh, MC Ju, YH Waezsada, SD Xue, ZL Barnes, CE TI Molecular imprinting on sol-gel materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 3 Z9 3 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 123-NUCL BP U1064 EP U1064 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903188 ER PT J AU Dang, LX AF Dang, LX TI Computer simulation studies of ion transport across a liquid-liquid interface. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 347-PHYS BP U372 EP U372 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001069 ER PT J AU Danis, JA Hawkins, HT Scott, BL Eichhorn, BW Runde, WH Veirs, DK AF Danis, JA Hawkins, HT Scott, BL Eichhorn, BW Runde, WH Veirs, DK TI Synthesis and characterization of two new uranium phosphates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 340-INOR BP U810 EP U811 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902455 ER PT J AU Darab, JG Amonette, AB Orr, RD Burke, DS Ponder, SM Mallouk, TE Caulder, DL Liu, P Lukens, WW Craig, IM Rao, LF Bucher, JJ Edelstein, NM Shuh, DK AF Darab, JG Amonette, AB Orr, RD Burke, DS Ponder, SM Mallouk, TE Caulder, DL Liu, P Lukens, WW Craig, IM Rao, LF Bucher, JJ Edelstein, NM Shuh, DK TI Removal of pertechnetate anions from simulated aqueous radioactive tank wastes using supported zero-valent iron. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Penn State Univ, Dept Chem, University Pk, PA 16802 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Craig, Ian/C-3799-2009; Mallouk, Thomas/K-7391-2012 OI Craig, Ian/0000-0003-4481-3700; Mallouk, Thomas/0000-0003-4599-4208 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 111-NUCL BP U1060 EP U1060 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903176 ER PT J AU Darab, JG Hoffmann, MM Fulton, JL AF Darab, JG Hoffmann, MM Fulton, JL TI Changes in the local coordination structure about Ni2+, Cu2+, Sr2+, Rb+ and Br- ions under hydrothermal conditions from in situ XAFS studies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm & Hlth Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 54-NUCL BP U1043 EP U1043 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903119 ER PT J AU Datskos, P Sepaniak, MJ AF Datskos, P Sepaniak, MJ TI Detection of analytes using adsorption-induced and photo-induced stress in semiconductor microstructures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Engn Technol Div, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 149-NUCL BP U1072 EP U1072 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903214 ER PT J AU Daughtery, M Haberman, D Salter, C Benson, D Hoffheins, B AF Daughtery, M Haberman, D Salter, C Benson, D Hoffheins, B TI Low-cost hydrogen sensors for hydrogen fuel safety. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 DCH Technol Inc, Valencia, CA 91355 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 111-FUEL BP U636 EP U636 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901925 ER PT J AU Davies, JA Hayden, CC AF Davies, JA Hayden, CC TI Femtosecond studies of dissociation dynamics using 3-D imaging techniques. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 198-PHYS BP U330 EP U330 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000923 ER PT J AU Davis, LL Allen, PG Bucher, JJ Caulder, DL Craig, IM Darab, JG Edelstein, NM Li, H Li, L Liu, P Lukens, W Nitsche, H Rao, L Shuh, DK Strachan, D AF Davis, LL Allen, PG Bucher, JJ Caulder, DL Craig, IM Darab, JG Edelstein, NM Li, H Li, L Liu, P Lukens, W Nitsche, H Rao, L Shuh, DK Strachan, D TI Speciation of uranium and plutonium in wasteform glasses by x-ray absorption fine structure spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. RI Craig, Ian/C-3799-2009 OI Craig, Ian/0000-0003-4481-3700 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 93-NUCL BP U1055 EP U1055 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903158 ER PT J AU Dietz, ML Bond, AH Chiarizia, R Huber, VJ Herlinger, AW Hay, BP AF Dietz, ML Bond, AH Chiarizia, R Huber, VJ Herlinger, AW Hay, BP TI Synergistic effects in the extraction of metal ions by mixtures of dialkylphosphoric acids ano crown ethers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Loyola Univ, Dept Chem, Chicago, IL 60626 USA. Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 73-NUCL BP U1049 EP U1049 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903138 ER PT J AU Dodge, JS Schumacher, AB Bigot, JY Chemla, DS Ingle, N Beasley, MR AF Dodge, JS Schumacher, AB Bigot, JY Chemla, DS Ingle, N Beasley, MR TI Time-resolved optical observation of magnon renormalization in antiferromagnetic Cr2O3. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Inst Phys & Chim Mat Strasbourg, CNRS, ULP, ECPM,Unite Mixte 380046, F-67037 Strasbourg, France. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 108-PHYS BP U305 EP U305 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000837 ER PT J AU Dorner, R Brauning, H Mergel, V Jagutzki, O Weber, T Spielberger, L Achler, M Cocke, CL Osipov, T Landers, A Prior, MH Schmidt-Bocking, H AF Dorner, R Brauning, H Mergel, V Jagutzki, O Weber, T Spielberger, L Achler, M Cocke, CL Osipov, T Landers, A Prior, MH Schmidt-Bocking, H TI 3-d momentum space imaging for ions and electrons. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Frankfurt, Inst Kernphys, D-65191 Frankfurt, Germany. Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Doerner, Reinhard/A-5340-2008; Landers, Allen/C-1213-2013 OI Doerner, Reinhard/0000-0002-3728-4268; NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 174-PHYS BP U323 EP U323 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000901 ER PT J AU Duncan, DC Whitten, DG Swanson, BI AF Duncan, DC Whitten, DG Swanson, BI TI Gelation of organic liquids by tethered dyad supergelators: Temperature-dependent H-1 NMR spectra and relaxation measurements. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Ctr Mat Sci, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 82-ORGN BP U32 EP U32 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000083 ER PT J AU Dunning, TH Peterson, KA AF Dunning, TH Peterson, KA TI Approximating CCSD(T) calculations with perturbation theory methods. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Washington State Univ, Dept Chem, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 169-PHYS BP U322 EP U322 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000896 ER PT J AU Elam, CC Padro, CEG Gaudernack, B AF Elam, CC Padro, CEG Gaudernack, B TI The international energy agency's hydrogen R&D activities. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Gary Sandrock SunaTech Inc, Ringwood, NJ 07456 USA. Inst Energy Technol, N-2007 Kjeller, Norway. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 112-FUEL BP U636 EP U637 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901926 ER PT J AU Emerson, JA Miller, GV Sorensen, CR Pearson, RA AF Emerson, JA Miller, GV Sorensen, CR Pearson, RA TI Self-adhesion hysteresis of a model siloxane elastomer. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Organ Mat Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 107-PMSE BP U633 EP U633 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001903 ER PT J AU Enick, RM Cugini, AV Rothenberger, KS McIlvried, HG AF Enick, RM Cugini, AV Rothenberger, KS McIlvried, HG TI Inert membrane reactor model: Enhanced hydrogen production from the water gas shift reaction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA. US DOE, Fed Energy Technol Ctr, Fuels & Chem Div, Pittsburgh, PA 15236 USA. Burns & Roe Serv Corp, Fed Energy Technol Ctr, Pittsburgh, PA 15236 USA. RI Cai, Jinling/M-3943-2013 OI Cai, Jinling/0000-0003-0588-6456 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 107-FUEL BP U635 EP U635 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901921 ER PT J AU Fadeev, AG Meagher, MM Volkov, VV Kelley, SS AF Fadeev, AG Meagher, MM Volkov, VV Kelley, SS TI Relaxation, compaction, fouling. and regeneration of poly(1-trimethylsilyl-1-propyne) in n-butanol recovery. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Nebraska, Biol Proc Dev Facil, Lincoln, NE 68583 USA. AV Topchiev Petrochem Synth Inst, Moscow 117912, Russia. NREL, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 15-MACR BP U710 EP U710 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034002149 ER PT J AU Fagan, BC Yost, TL Allain, LR Xue, ZL Barnes, CE Dai, S AF Fagan, BC Yost, TL Allain, LR Xue, ZL Barnes, CE Dai, S TI Crown-ether-doped sol-gel sorbents for Sr2(+) separation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 74-NUCL BP U1049 EP U1049 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903139 ER PT J AU Feller, DF AF Feller, DF TI Climbing Mount Psi: The level of theory needed to obtain 1 kcal/mol accuracy in thermochemical properties. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 2-FUEL BP U603 EP U603 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901818 ER PT J AU Felmy, AR LeGore, VL AF Felmy, AR LeGore, VL TI Chemical characterization of solubility and leaching controls on NRC site decommissioning management plan wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 100-NUCL BP U1057 EP U1057 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903165 ER PT J AU Felmy, AR Dixon, DA Mason, MJ AF Felmy, AR Dixon, DA Mason, MJ TI Displacement of Sr and trivalent actinides from strong organic chelates present in tank waste: Improved thermodynamic models. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 89-NUCL BP U1053 EP U1054 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903154 ER PT J AU Fjeld, RA Elzerman, AW Coates, JT Navratil, JD AF Fjeld, RA Elzerman, AW Coates, JT Navratil, JD TI Science in support of CERCLA: A case study at the Idaho National Environmental and Engineering Laboratory. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Clemson Univ, Dept Environm Engn & Sci, Anderson, SC 29625 USA. Lockheed Martin Idaho Technol Co, Idaho Falls, ID USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 105-NUCL BP U1058 EP U1059 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903170 ER PT J AU Flynn, T Ghirardi, ML Seibert, M AF Flynn, T Ghirardi, ML Seibert, M TI Isolation of Chlamydomonas hydrogenase mutants with improved oxygen tolerance. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 86-FUEL BP U628 EP U628 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901901 ER PT J AU Foster, LL Wilson, KR Robinson, JM Henson, BF AF Foster, LL Wilson, KR Robinson, JM Henson, BF TI Investigating the role of quasi-liquid layers in tropospheric chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 291-PHYS BP U356 EP U357 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001014 ER PT J AU Francis, AJ Dodge, CJ Gillow, JB Halada, GP Clayton, CR AF Francis, AJ Dodge, CJ Gillow, JB Halada, GP Clayton, CR TI Decontamination of uranium-contaminated metallic surfaces with uranium recovery. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 94-NUCL BP U1055 EP U1055 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903159 ER PT J AU Franz, JA Kolwaite, DS Linehan, JC Birnbaum, JC Rosenberg, E AF Franz, JA Kolwaite, DS Linehan, JC Birnbaum, JC Rosenberg, E TI Hydrogen transfer from catalyst intermediate prototypes to stabilized free radicals. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Hlth Sci Div, Richland, WA 99338 USA. Univ Montana, Missoula, MT 59812 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 12-FUEL BP U606 EP U606 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901828 ER PT J AU Fryberger, T AF Fryberger, T TI Scientific issues for the DOE weapons complex cleanup: High-level waste and spent nuclear fuel. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 2-NUCL BP U1028 EP U1028 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903067 ER PT J AU Fryxell, GE Zemanian, TS Lin, YH Liu, J Birnbaum, JC Alford, K Hauser, TA AF Fryxell, GE Zemanian, TS Lin, YH Liu, J Birnbaum, JC Alford, K Hauser, TA TI Environmental applications of self-assembled monolayers on mesoporous supports. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Mat Synth Grp, Richland, WA 99352 USA. Univ Portland, Portland, OR 97203 USA. RI Lin, Yuehe/D-9762-2011 OI Lin, Yuehe/0000-0003-3791-7587 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 205-NUCL BP U1089 EP U1089 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903270 ER PT J AU Garrett, B AF Garrett, B TI Variational transition-state theory methods for calculating reaction rate constants in gas and condensed phases. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Garrett, Bruce/F-8516-2011 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 14-FUEL BP U606 EP U606 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901830 ER PT J AU Garrett, BC Kathmann, SM Schenter, GK AF Garrett, BC Kathmann, SM Schenter, GK TI Thermochemistry and kinetics of small water clusters. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 422-PHYS BP U392 EP U392 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001139 ER PT J AU Gephart, R AF Gephart, R TI Nuclear waste generation, storage, and release at the Hanford Site, Washington. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 10-NUCL BP U1030 EP U1030 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903075 ER PT J AU Ghiorso, A AF Ghiorso, A TI Glenn T. Seaborg. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 121-NUCL BP U1063 EP U1063 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903186 ER PT J AU Goheen, SC Gibbins, BM Hilsenbeck, JL Herbold, CW Edwards, JV AF Goheen, SC Gibbins, BM Hilsenbeck, JL Herbold, CW Edwards, JV TI Adsorption and surface-mediated unfolding of proteins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA USA. USDA ARS, So Reg Res Ctr, Washington, DC 20250 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 9-CELL BP U214 EP U215 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900584 ER PT J AU Gramer, CJ Wieland, NS O'Sullivan, B Raymond, KN AF Gramer, CJ Wieland, NS O'Sullivan, B Raymond, KN TI Investigation of 2,3-dihyoroxyterephthalamides and 3,4-dihydroxysulfonamides as actinide extractants. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 75-NUCL BP U1049 EP U1050 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903140 ER PT J AU Green, DW Smith, LL AF Green, DW Smith, LL TI Better radiological measurements through better sample preparation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Analyt Chem Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 122-ANYL BP U162 EP U162 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900434 ER PT J AU Greenbaum, E Lee, JW Blankinship, SL AF Greenbaum, E Lee, JW Blankinship, SL TI Renewable hydrogen production by photosynthetic water splitting. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 87-FUEL BP U629 EP U629 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901902 ER PT J AU Griego, ME AF Griego, ME TI Thermally-induced gallium removal. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 16-TECH BP U380 EP U380 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901133 ER PT J AU Gross, KC Russ, WR Valentine, JD Stuenkel, DO AF Gross, KC Russ, WR Valentine, JD Stuenkel, DO TI Investigation of heavy noble gas solubility in trigliceride oils. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Reactor Anal Div, Argonne, IL 60439 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Georgia Inst Technol, Atlanta, GA 30332 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 65-NUCL BP U1046 EP U1047 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903130 ER PT J AU Grutzeck, MW Siemer, DD Scheetz, BE Jantzen, CM AF Grutzeck, MW Siemer, DD Scheetz, BE Jantzen, CM TI Hydroceramic waste forms made from metakaolinite and calcined sodium-bearing waste: Preliminary studies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA. Lockheed Idaho Technol Co, Idaho Falls, ID 83415 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 60-NUCL BP U1045 EP U1045 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903125 ER PT J AU Gu, BH Brown, GM Alexandratos, SD Ober, R Plant, S AF Gu, BH Brown, GM Alexandratos, SD Ober, R Plant, S TI Efficient separation of perchlorate from contaminated groundwater by bifunctional anion exchange resins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Purolite Int, Pontyclun CF72 8YL, Wales. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 34-ENVR BP U553 EP U553 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901675 ER PT J AU Gutowski, MS Snyder, JA Jaffe, JE Lin, ZJ Alfonso, D Hess, AC AF Gutowski, MS Snyder, JA Jaffe, JE Lin, ZJ Alfonso, D Hess, AC TI Periodic density functional studies with local Gaussian basis sets of adsorption and coadsorption on metal oxide surfaces. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 418-PHYS BP U391 EP U391 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001135 ER PT J AU Gutowski, MS Skurski, P AF Gutowski, MS Skurski, P TI Excess electron binding by (H2O)(2), (H2O)(3), H2O...NH3, and H2O...HCl. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 292-PHYS BP U357 EP U357 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001015 ER PT J AU Guzik, JA Neuforge, C AF Guzik, JA Neuforge, C TI Sensitivity of solar oscillation frequencies to element abundances and composition gradients. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, XTA, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 185-NUCL BP U1082 EP U1083 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903250 ER PT J AU Hagaman, E Galipo, E AF Hagaman, E Galipo, E TI Search for retrogressive reactions accompanying demineralization in native ano air-oxidized coals. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 10-GEOC BP U647 EP U647 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901954 ER PT J AU Haglund, RF Ermer, DR Papantonakis, MR Baltz-Knor, M Hess, WP AF Haglund, RF Ermer, DR Papantonakis, MR Baltz-Knor, M Hess, WP TI Mass spectrometric fingerprinting of tank wastes using tunable, ultrafast infrared lasers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Vanderbilt Univ, Nashville, TN 37235 USA. Pacific NW Lab, Richland, WA 99352 USA. RI Papantonakis, Michael/G-3888-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 145-NUCL BP U1071 EP U1071 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903210 ER PT J AU Halada, GP Clayton, CR Francis, AJ Dodge, CJ Gillow, JB AF Halada, GP Clayton, CR Francis, AJ Dodge, CJ Gillow, JB TI Spectroscopic study of the association of contaminant uranium with mild steel corrosion products. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 61-NUCL BP U1045 EP U1045 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903126 ER PT J AU Haustein, PE AF Haustein, PE TI Nuclear-stimulated desorption at the surfaces of model SNF materials: Experiments and computer simulations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 181-NUCL BP U1081 EP U1082 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903246 ER PT J AU Hayden, CC Davies, JA AF Hayden, CC Davies, JA TI Femtosecond time-resolved photoelectron-photoion coincidence imaging. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 146-PHYS BP U315 EP U316 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000874 ER PT J AU Hayes, SE Even, WR Guidotti, RA Eckert, H AF Hayes, SE Even, WR Guidotti, RA Eckert, H TI Li-7 solid-state NMR of intercalated amorphous carbons: Structure and electronic properties. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. Sandia Natl Labs, Livermore, CA 94551 USA. Sandia Natl Labs, Engn & Dev Dept, Albuquerque, NM 87185 USA. Univ Munster, Inst Phys Chem, D-48149 Munster, Germany. RI Eckert, Hellmut/G-3176-2012; Hayes, Sophia/C-1075-2008 OI Hayes, Sophia/0000-0002-2809-6193 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 6-GEOC BP U646 EP U646 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901950 ER PT J AU Head-Gordon, MP AF Head-Gordon, MP TI Electronic structure methods for nonadiabatic processes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Div Chem Sci, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 89-PHYS BP U299 EP U299 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000819 ER PT J AU Head-Gordon, T AF Head-Gordon, T TI Determining hydration forces in model proteinlike systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Phys Biosci & Life Sci Div, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 4-PHYS BP U275 EP U275 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000745 ER PT J AU Henson, BF Foster, LL Wilson, KR Robinson, JM AF Henson, BF Foster, LL Wilson, KR Robinson, JM TI Relationship between the quasiliquid phase and multilayer physical adsorption. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 158-PHYS BP U319 EP U319 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000886 ER PT J AU Herlinger, AW Griffith, JA McAlister, DR Barrans, RE AF Herlinger, AW Griffith, JA McAlister, DR Barrans, RE TI Functionalized diphosphonic acid ligands for metal ion coordination in supercritical carbon dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Loyola Univ, Dept Chem, Chicago, IL 60626 USA. Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 33-NUCL BP U1037 EP U1037 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903098 ER PT J AU Hicks, HT AF Hicks, HT TI Complex-wide DOE subsurface remediation problem set. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Savannah River Operat Off, Aiken, SC 29082 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 1-NUCL BP U1028 EP U1028 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903066 ER PT J AU Hoffmann, MM Darab, JG Fulton, JL AF Hoffmann, MM Darab, JG Fulton, JL TI In situ XAFS studies of reacting hydrothermal solutions that are relevant to the treatment of the Hanford tank wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm & Hlth Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 203-NUCL BP U1088 EP U1088 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903268 ER PT J AU Holt, BD Sturchio, NC Heraty, LJ AF Holt, BD Sturchio, NC Heraty, LJ TI Extraction of chlorinated aliphatic hydrocarbons from groundwater for isotopic analysis of carbon and chlorine. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 76-NUCL BP U1050 EP U1050 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903141 ER PT J AU Hong, JK Inbody, MA Hedstrom, JC Tafoya, JI Vanderborgh, NE AF Hong, JK Inbody, MA Hedstrom, JC Tafoya, JI Vanderborgh, NE TI Catalytic reactor for improved carbon monoxide control in hydrogen feed stream. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 118-FUEL BP U638 EP U638 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901932 ER PT J AU Hrma, P Izak, P Klouzek, J Mika, M Nemec, L Schill, P AF Hrma, P Izak, P Klouzek, J Mika, M Nemec, L Schill, P TI Chemistry and hydrodynamics of spinel settling in molten glass. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Inst Chem Technol, CR-16628 Prague 6, Czech Republic. Acad Sci Czech Republ, Inst Inorgan Chem, CR-16000 Prague, Czech Republic. Glass Serv Ltd, Vsetin 75501, Czech Republic. RI Izak, Pavel/H-3401-2014 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 177-NUCL BP U1080 EP U1080 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903242 ER PT J AU Hsu, PC Ford, T Foster, K Wallman, H Watkins, B Pruneda, C Adamson, M AF Hsu, PC Ford, T Foster, K Wallman, H Watkins, B Pruneda, C Adamson, M TI Molten salt oxidation for the treatment of spent activated carbon. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 107-IEC BP U705 EP U705 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902134 ER PT J AU Hubler, TL Anderson, GM Sukamto, JH Lilga, MA Rassat, SD AF Hubler, TL Anderson, GM Sukamto, JH Lilga, MA Rassat, SD TI Polyvinylferrocence polymers as electroactive ion-exchange materials for separation of pertechnetate ion from high nitrate ion-containing wastes: Issues and synthetic strategies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 77-NUCL BP U1050 EP U1050 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903142 ER PT J AU Hunt, JE Winans, RE AF Hunt, JE Winans, RE TI Molecular size and structure in extracts of Upper Freeport coal. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 20-FUEL BP U608 EP U608 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901836 ER PT J AU Icenhower, JP McGrail, BP Thevuthasan, T Engelhard, M Darab, JG Baer, DR Shuh, DK AF Icenhower, JP McGrail, BP Thevuthasan, T Engelhard, M Darab, JG Baer, DR Shuh, DK TI Alkali-hydrogen exchange reactions between Na-Al-Si glass and water at high values of chemical affinity: Implications for waste-disposal media. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Pacific NW Lab, Dept Mat Sci, Richland, WA 99352 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Actinide Chem Grp, Berkeley, CA 94720 USA. RI Engelhard, Mark/F-1317-2010; Icenhower, Jonathan/E-8523-2011; Baer, Donald/J-6191-2013 OI Baer, Donald/0000-0003-0875-5961 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 175-NUCL BP U1080 EP U1080 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903240 ER PT J AU Im, HJ Yang, YH Allain, LR Xue, ZL Barnes, CE Dai, S AF Im, HJ Yang, YH Allain, LR Xue, ZL Barnes, CE Dai, S TI Ligand-grafted hydrophilic sol-gel sorbents for toxic metal separations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 78-NUCL BP U1050 EP U1051 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903143 ER PT J AU Ingram, JC Cortez, MM Bates, DL McCurry, MO AF Ingram, JC Cortez, MM Bates, DL McCurry, MO TI Degradation of trichloroethylene and carbon tetrachloride at iron oxides and basalt. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Idaho State Univ, Dept Geol, Pocatello, ID 83209 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 45-NUCL BP U1040 EP U1041 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903110 ER PT J AU Iton, LE Gardner, EA Sherif, F Zhang, ZC Rao, R Kung, HH Popp, K AF Iton, LE Gardner, EA Sherif, F Zhang, ZC Rao, R Kung, HH Popp, K TI New catalyst technology for the selective oxidation of feedstock aromatic compounds to commodity chemicals. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Akzo Nobel Chem, Dobbs Ferry, NY 10522 USA. Northwestern Univ, Dept Chem Engn, Evanston, IL 60208 USA. RI Kung, Harold/B-7647-2009 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 1-IEC BP U677 EP U677 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902039 ER PT J AU Ivanov, IN Dabestani, R Sigman, ME AF Ivanov, IN Dabestani, R Sigman, ME TI Generation of singlet oxygen by direct excitation of silica: A time-resolved study. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RI ivanov, ilia/D-3402-2015 OI ivanov, ilia/0000-0002-6726-2502 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 263-PHYS BP U348 EP U348 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000986 ER PT J AU Izak, P Hrma, P Schweiger, MJ AF Izak, P Hrma, P Schweiger, MJ TI Nonisothermal crystallization of spinel from a high-level waste feed. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Thermal Proc Grp, Richland, WA 99352 USA. RI Izak, Pavel/H-3401-2014 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 179-NUCL BP U1081 EP U1081 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903244 ER PT J AU Ji, HF Brown, GM Dabestani, R AF Ji, HF Brown, GM Dabestani, R TI Calix[4]arene-based Cs plus selective optical sensor. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 128-NUCL BP U1066 EP U1066 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903193 ER PT J AU John, KD Scott, BL Sattelberger, AP Baker, RT Salazar, KV AF John, KD Scott, BL Sattelberger, AP Baker, RT Salazar, KV TI Synthesis and structural characterization of novel mixed Sigma/pi iridium-allyl complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 167-INOR BP U761 EP U761 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902299 ER PT J AU Ju, YH Burleigh, MC Dai, S Barnes, CE Xue, ZL AF Ju, YH Burleigh, MC Dai, S Barnes, CE Xue, ZL TI Direct molecular-imprinting approach to mesoporous sol-gel sorbents. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 79-NUCL BP U1051 EP U1051 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903144 ER PT J AU Kay, BD Dohnalek, Z Kimmel, GA Stevenson, KP Smith, RS AF Kay, BD Dohnalek, Z Kimmel, GA Stevenson, KP Smith, RS TI Molecular beam studies of nanoscale films of amorphous solid water. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 140-PHYS BP U314 EP U314 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000869 ER PT J AU Kelley, SS Wang, XM Myers, MD Davis, MF AF Kelley, SS Wang, XM Myers, MD Davis, MF TI Influence of the reactivity and functionality of phenolic model compounds on network formation reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 52-CELL BP U225 EP U225 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900614 ER PT J AU Kelly, SD Kemner, KM Fryxell, GE Liu, J Hauser, TA AF Kelly, SD Kemner, KM Fryxell, GE Liu, J Hauser, TA TI X-ray absorption fine structure spectroscopy determination of the binding mechanism of actinide surrogate anions to self-assembled monolayers on mesoporous supports. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 92-NUCL BP U1054 EP U1055 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903157 ER PT J AU Kendrick, BK AF Kendrick, BK TI Effects of nonadiabatic coupling in the H+D-2 >> HD+D reaction at high-collision energies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Grp T12, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 41-PHYS BP U286 EP U286 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000776 ER PT J AU Kent, MS Yim, H Matheson, A Cogdill, C Reedy, ED AF Kent, MS Yim, H Matheson, A Cogdill, C Reedy, ED TI Use of self-assembling monolayers to control interface strength in a model study of interfacial fracture. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 10-PMSE BP U606 EP U606 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001807 ER PT J AU Kent, MS Majewski, J Lee, LT Satija, S AF Kent, MS Majewski, J Lee, LT Satija, S TI Model study of tethered chains using Langmuir monolayers of diblock copolymers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Leon Brillouin Lab, Saclay, France. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Lujan Center, LANL/G-4896-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 562-POLY BP U558 EP U558 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001703 ER PT J AU Klug, DD Tulk, CA Svensson, EC Loong, CK AF Klug, DD Tulk, CA Svensson, EC Loong, CK TI Dynamics and structural details of amorphous ice by incoherent inelastic neutron scattering. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Res Council Canada, Steacie Inst Mol Sci, Theory Grp, Ottawa, ON K1A 0R6, Canada. Natl Res Council Canada, Steacie Inst Mol Sci, Neutron Program Mat Res, Ottawa, ON, Canada. Argonne Natl Lab, Argonne, IL 60439 USA. RI Tulk, Chris/R-6088-2016 OI Tulk, Chris/0000-0003-3400-3878 NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 85-PHYS BP U298 EP U298 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000816 ER PT J AU Konze, WV Scott, BL Kubas, GJ AF Konze, WV Scott, BL Kubas, GJ TI Small molecule coordination, C-H activation, and C-C coupling reactions with cationic platinum complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 28-INOR BP U719 EP U719 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902164 ER PT J AU Kopasz, JP Wilkenhoener, R Ahmed, S Carter, JD Krumpelt, M AF Kopasz, JP Wilkenhoener, R Ahmed, S Carter, JD Krumpelt, M TI Fuel flexible partial oxidation reforming of hydrocarbons for automotive applications. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Technol Program, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 98-FUEL BP U632 EP U632 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901912 ER PT J AU Kratz, KL AF Kratz, KL TI Astrophysical r-process: From B2FH to FK2L. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. LANL, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 150-NUCL BP U1072 EP U1073 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903215 ER PT J AU Krumhansl, JL Brady, PV Zhang, PC Arthur, S Liu, J AF Krumhansl, JL Brady, PV Zhang, PC Arthur, S Liu, J TI Waste tank sludge simulation and radionuclide retention. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Geochem Div, Albuquerque, NM 87185 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 55-NUCL BP U1043 EP U1044 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903120 ER PT J AU Kubas, GJ Huhmann-Vincent, J Konze, WV Scott, BL AF Kubas, GJ Huhmann-Vincent, J Konze, WV Scott, BL TI Small molecule activation on strong organometallic electrophiles. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 308-INOR BP U801 EP U802 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902426 ER PT J AU Laman, DM Joly, AG Ray, D AF Laman, DM Joly, AG Ray, D TI Rotational coherence spectroscopy and mass-resolved resonant two-photon ionization spectroscopy of fluorene-X-n (X = H2O, CH3OH, CH3CN, NH3) clusters. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 214-PHYS BP U334 EP U334 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000939 ER PT J AU Le, QTH Ehler, DS Sauer, NN AF Le, QTH Ehler, DS Sauer, NN TI Beryllium extraction by water-soluble polymers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 341-INOR BP U811 EP U811 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902459 ER PT J AU Lerchen, ME Huffman, LA Kovach, JL Welliver, NC Wiemers, KD AF Lerchen, ME Huffman, LA Kovach, JL Welliver, NC Wiemers, KD TI The science behind compliance. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Waste Disposal Integrat Team, Richland, WA 99352 USA. US DOE, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 11-NUCL BP U1030 EP U1030 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903076 ER PT J AU Li, LY Li, H Strachan, DM Qian, MX Davis, LL Darab, JG Wang, ZM AF Li, LY Li, H Strachan, DM Qian, MX Davis, LL Darab, JG Wang, ZM TI Optical spectroscopic study of neodymium in sodium-alumina-borosilicate glasses. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Technol Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 178-NUCL BP U1081 EP U1081 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903243 ER PT J AU Li, M Hebenstreit, W Chambers, SA Diebold, U AF Li, M Hebenstreit, W Chambers, SA Diebold, U TI Oxygen-induced restructuring of the TiO2(110) surface: A STM and LEIS study. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Tulane Univ, Dept Phys, New Orleans, LA 70118 USA. Pacific NW Lab, Richland, WA USA. RI Diebold, Ulrike/A-3681-2010 OI Diebold, Ulrike/0000-0003-0319-5256 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 106-COLL BP U430 EP U430 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901299 ER PT J AU Liu, DJ Thiel, PA Evans, JW AF Liu, DJ Thiel, PA Evans, JW TI Percolative diffusion in mixed adlayers end its influence on chemical wave propagation in surface reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 119-PHYS BP U308 EP U308 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000848 ER PT J AU Liu, J Lummeta, G Virden, JW Graff, GL Bunker, BC Krumhansl, JL AF Liu, J Lummeta, G Virden, JW Graff, GL Bunker, BC Krumhansl, JL TI Characterization of colloidal phases in tank wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 164-NUCL BP U1077 EP U1077 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903229 ER PT J AU Lorenz, KT Chandler, DW McBane, GC Westley, MS Houston, PL AF Lorenz, KT Chandler, DW McBane, GC Westley, MS Houston, PL TI Study of rotational energy transfer in atom-diatom systems using velocity mapped imaging. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Livermore, CA 94551 USA. Ohio State Univ, Columbus, OH 43210 USA. Cornell Univ, Ithaca, NY 14853 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 122-PHYS BP U309 EP U309 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000851 ER PT J AU Loy, DA Shaltout, RM Carpenter, JP Dorhout, K Shea, KJ AF Loy, DA Shaltout, RM Carpenter, JP Dorhout, K Shea, KJ TI Polymerization of the Z and E isomers of bis(triethoxysilyl)-2-butene. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Calif Irvine, Irvine, CA 92717 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 246-POLY BP U468 EP U468 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034001387 ER PT J AU Lu, YF Fan, HY Brinker, CJ AF Lu, YF Fan, HY Brinker, CJ TI Formation of nanostructured thin films and particles by surfactant self-assembly. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Direct Fabricat Dept 1831, Adv Mat Lab, Albuquerque, NM 87106 USA. Univ New Mexico, Albuquerque, NM 87131 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 125-COLL BP U435 EP U435 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901318 ER PT J AU Lu, YF Fan, HY Brinker, CJ Ward, TL Rieker, T AF Lu, YF Fan, HY Brinker, CJ Ward, TL Rieker, T TI Aerosol-assisted self-assembly of mesostructured spherical nanoparticles. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Direct Fabricat Dept 1831, Adv Mat Lab, Albuquerque, NM 87106 USA. Univ New Mexico, Albuquerque, NM 87131 USA. NR 0 TC 1 Z9 1 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 95-COLL BP U426 EP U426 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901288 ER PT J AU Lujan, DJ AF Lujan, DJ TI Direct Metal Oxidation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 15-TECH BP U380 EP U380 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901132 ER PT J AU Lukehart, CM Boxall, DL Corn, JD Hariharasarma, M King, WD Kwiatkowski, KC Steigerwalt, ES Kenik, EA AF Lukehart, CM Boxall, DL Corn, JD Hariharasarma, M King, WD Kwiatkowski, KC Steigerwalt, ES Kenik, EA TI Preparation of Pt-Ru or Pt-Mo supported catalysts for PEM or direct methanol fuel cells from single-source molecular precursors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 116-FUEL BP U638 EP U638 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901930 ER PT J AU Lukens, WW Allen, PG Bucher, JJ Edelstein, NM Shuh, DK AF Lukens, WW Allen, PG Bucher, JJ Edelstein, NM Shuh, DK TI Chemistry of reduced technetium in base. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Actinide Chem Grp, Berkeley, CA 94720 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 199-NUCL BP U1087 EP U1087 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903264 ER PT J AU Luo, L Britt, PF Buchanan, AC Desai, DO Makote, RD AF Luo, L Britt, PF Buchanan, AC Desai, DO Makote, RD TI Chromatographic characterization of molecularly imprinted polymers for nitroaromatics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 28-MACR BP U714 EP U714 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034002162 ER PT J AU Lymar, SV Yurchenko, EN Gerasimov, OV Wishart, JF AF Lymar, SV Yurchenko, EN Gerasimov, OV Wishart, JF TI Radiation-induced formation and decay of peroxynitrite in solid alkali nitrates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 168-NUCL BP U1078 EP U1078 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903233 ER PT J AU Manaa, MR Fried, LE AF Manaa, MR Fried, LE TI Nonadiabatic chemistry in energetic materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. RI Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 184-PHYS BP U326 EP U326 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000910 ER PT J AU Marchand, AP Chong, HS McKim, AS Krishnudu, K Ravikumar, KS Kumar, VS Takhi, M Moyer, BA Chambliss, CK Bryan, JC AF Marchand, AP Chong, HS McKim, AS Krishnudu, K Ravikumar, KS Kumar, VS Takhi, M Moyer, BA Chambliss, CK Bryan, JC TI Cage-functionalized, nitrogen-containing macrocycles and podands: Potential new host systems for extraction of NaOH from wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ N Texas, Dept Chem, Denton, TX 76203 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 108-NUCL BP U1059 EP U1059 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903173 ER PT J AU Marley, NA Blazer, CA Drayton, PJ Gaffney, JS AF Marley, NA Blazer, CA Drayton, PJ Gaffney, JS TI Ozone chemiluminescence detection: A potential sensitive and specific detection system for olefin monitoring. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 44-IEC BP U688 EP U688 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902075 ER PT J AU Matonic, JH Neu, MP Scott, B AF Matonic, JH Neu, MP Scott, B TI Synthesis and structural studies of plutonium complexes containing nitrogen and sulfur donor ligands. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 170-INOR BP U762 EP U763 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902302 ER PT J AU McBane, GC Antonova, S Lin, A Tsakotellis, AP Lorenz, KT Chandler, DW AF McBane, GC Antonova, S Lin, A Tsakotellis, AP Lorenz, KT Chandler, DW TI Crossed-beam studies of CO rotational energy transfer. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Ohio State Univ, Dept Chem, Columbus, OH 43210 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 102-PHYS BP U303 EP U303 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000832 ER PT J AU McCleskey, TM Birnbaum, ER Apodaca, DL AF McCleskey, TM Birnbaum, ER Apodaca, DL TI Heterogeneous extractions using supercritical carbon dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI McCleskey, Thomas/J-4772-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 114-NUCL BP U1061 EP U1061 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903179 ER PT J AU McGivern, WS Sorkahabi, O Razvi, A Suits, AG North, SW AF McGivern, WS Sorkahabi, O Razvi, A Suits, AG North, SW TI Photofragment translational spectroscopy with state-selective "universal detection": The ultraviolet photodissociation of CS2. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI North, Simon/G-5054-2012 OI North, Simon/0000-0002-0795-796X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 196-PHYS BP U329 EP U329 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000921 ER PT J AU McIlwain, M Hale, D AF McIlwain, M Hale, D TI Environmental management science program results transfer to department of energy cleanup activities. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RI Guillen, Donna/B-9681-2017 OI Guillen, Donna/0000-0002-7718-4608 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 39-NUCL BP U1038 EP U1039 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903104 ER PT J AU McLuckey, SA AF McLuckey, SA TI Analytical chemistry research and development at Oak Ridge National Laboratory. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 121-ANYL BP U162 EP U162 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900433 ER PT J AU Meisel, D Orlando, T AF Meisel, D Orlando, T TI Radiolytic effects in homogeneous and heterogeneous high-level simulants. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA. Pacific NW Lab, Environm & Hlth Sci Div, Richland, WA 99352 USA. Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 162-NUCL BP U1076 EP U1076 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903227 ER PT J AU Mitchell, AR Coburn, MD Schmidt, RD Pagoria, PF Lee, GS AF Mitchell, AR Coburn, MD Schmidt, RD Pagoria, PF Lee, GS TI Chemical conversion of energetic materials to higher value products. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 45-ORGN BP U21 EP U21 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000046 ER PT J AU Moens, L AF Moens, L TI Synthesis of delta-aminolevulinic acid. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Ctr Chem BioEnergy Syst, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 14-CELL BP U216 EP U216 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900588 ER PT J AU Moore, RC Brush, LH Free, SJ Nowak, EJ AF Moore, RC Brush, LH Free, SJ Nowak, EJ TI Thermodynamic model for actinide-organic ligand interactions for the waste isolation pilot plant. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, WIPP Test & Anal Dept 6832, Albuquerque, NM 87185 USA. Sandia Natl Labs, Chem Disposal Room Proc Dept 6831, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 27-NUCL BP U1035 EP U1035 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903092 ER PT J AU Morrell, JS Xue, ZLB Beach, DB Chirayil, TG Paranthaman, M AF Morrell, JS Xue, ZLB Beach, DB Chirayil, TG Paranthaman, M TI Epitaxial growth of rare-earth oxide buffer layers on biaxially textured nickel(100) substrates by an all-solution route. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RI Paranthaman, Mariappan/N-3866-2015 OI Paranthaman, Mariappan/0000-0003-3009-8531 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 461-INOR BP U850 EP U850 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902576 ER PT J AU Morris, DE Burns, CJ Smith, WH Blanchard, DL Diaz, T AF Morris, DE Burns, CJ Smith, WH Blanchard, DL Diaz, T TI Aqueous electrochemical mechanisms in mediated dissolution of actinide residues. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Seaborg Inst Transactinium Sci, Los Alamos, NM 87545 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 91-NUCL BP U1054 EP U1054 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903156 ER PT J AU Morss, LR Richmann, MK Lexa, D AF Morss, LR Richmann, MK Lexa, D TI Glass-bonded sodalite: A ceramic nuclear waste form. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 99-IEC BP U703 EP U703 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902126 ER PT J AU Moyer, BA AF Moyer, BA TI Chemical principles and their use toward remediation of radioactive contamination in wastes and the environment. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Chem & Analyt Sci Div, Oak Ridge, TN 37831 USA. RI Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 45-INOR BP U724 EP U724 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902179 ER PT J AU Myers, EK Barnes, CE Dai, S Xue, ZL AF Myers, EK Barnes, CE Dai, S Xue, ZL TI Sol-gel sorbents for cesium and strontium. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 467-INOR BP U851 EP U852 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902578 ER PT J AU Nash, KL Bond, AH Jensen, MP Sullivan, JC Rao, L AF Nash, KL Bond, AH Jensen, MP Sullivan, JC Rao, L TI Actinide behavior during sludge washing of alkaline radioactive wastes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 35-NUCL BP U1037 EP U1037 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903100 ER PT J AU Nenoff, TM Nyman, MD Balmer, ML Su, YL Navrotsky, A Xu, HW AF Nenoff, TM Nyman, MD Balmer, ML Su, YL Navrotsky, A Xu, HW TI Synthesis, characterization, ion exchange, and ion selectivity of novel microporous Cs00.5-Na00.5-SiO2-TiO2-X-H2O (X = transition-metal oxides) materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Pacific NW Lab, Dept Chem & Mat Sci, Richland, WA 99352 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 113-NUCL BP U1061 EP U1061 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903178 ER PT J AU Nenoff, TM Chavez, AV Trudell, D Phillips, MLF Harrison, WTA AF Nenoff, TM Chavez, AV Trudell, D Phillips, MLF Harrison, WTA TI Novel organic-templated zinc phosphate bulk phases and thin-film membranes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Univ Aberdeen, Dept Chem, Aberdeen AB34 3UE, Scotland. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 239-INOR BP U783 EP U783 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902369 ER PT J AU Neu, MP Runde, WH Clark, DL Conradson, SD Efurd, DW Janecky, DR Kaszuba, JP Tait, CD Haire, RG AF Neu, MP Runde, WH Clark, DL Conradson, SD Efurd, DW Janecky, DR Kaszuba, JP Tait, CD Haire, RG TI Plutonium speciation and its effects on environmental migration. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87544 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 189-NUCL BP U1084 EP U1084 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903254 ER PT J AU Neu, MP Clark, DL Conradson, SD Donohoe, RJ Gordon, JC Keogh, DW Morris, DE Rogers, RD Scott, BL Tait, CD AF Neu, MP Clark, DL Conradson, SD Donohoe, RJ Gordon, JC Keogh, DW Morris, DE Rogers, RD Scott, BL Tait, CD TI Structure and stability of actinides (U, Np, Pu) under strongly alkaline radioactive waste tank conditions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 88-NUCL BP U1053 EP U1053 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903153 ER PT J AU Nghiem, NP Davison, BH McKeown, CK Rodriguez, M AF Nghiem, NP Davison, BH McKeown, CK Rodriguez, M TI Development of a fermentation process for the production of succinic acid. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Bioproc R&D Ctr, Oak Ridge, TN 37831 USA. RI Davison, Brian/D-7617-2013 OI Davison, Brian/0000-0002-7408-3609 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 18-CELL BP U217 EP U217 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033900591 ER PT J AU Norman, EB Browne, E AF Norman, EB Browne, E TI On the half-life of Ti-44 in young supernova remnants. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 132-NUCL BP U1067 EP U1067 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903197 ER PT J AU Nyman, M Nenoff, TM Balmer, ML Su, YL Navrotsky, A Xu, HW AF Nyman, M Nenoff, TM Balmer, ML Su, YL Navrotsky, A Xu, HW TI Novel class of solid-solution, inorganic ion exchangers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Pacific NW Lab, Davis, CA USA. Univ Calif Davis, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 548-INOR BP U878 EP U878 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902659 ER PT J AU Orlando, TM Petrik, NG Camaioni, DM Marschman, SC Wiley, WR AF Orlando, TM Petrik, NG Camaioni, DM Marschman, SC Wiley, WR TI Interfacial radiolysis effects relevant to spent nuclear fuel and mixed radioactive waste storage. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Petrik, Nikolay/G-3267-2015; Marschman, Steven/E-5193-2017 OI Petrik, Nikolay/0000-0001-7129-0752; Marschman, Steven/0000-0002-3335-4695 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 204-NUCL BP U1089 EP U1089 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033903269 ER PT J AU Padilla, DD Worl, LA Devilin, D Prenger, C Hill, D AF Padilla, DD Worl, LA Devilin, D Prenger, C Hill, D TI High-performance magnetic separation for actinide particle collection. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Adv Technol Grp, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Polymers & Coatings Grp, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, ESA EPE, Engn Sci & Applicat Div, Energy & Proc Engn Grp, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 28-TECH BP U382 EP U383 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033901143 ER PT J AU Padilla, DD Wori, LA Buelow, SJ Harradine, DM Roberts, JH Shao, XY AF Padilla, DD Wori, LA Buelow, SJ Harradine, DM Roberts, JH Shao, XY TI Destruction of combustible mixed waste with hydrothermal processing. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Adv Technol Grp, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Kinet & Dynam Grp, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 101-IEC BP U704 EP U704 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226QZ UT WOS:000082033902132 ER PT J AU Pagoria, PF Lee, GS Schmidt, RD Mitchell, AR AF Pagoria, PF Lee, GS Schmidt, RD Mitchell, AR TI New methods in the synthesis of nitro-substituted heterocyclic compounds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Energet Mat Program Element, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1999 VL 218 MA 46-ORGN BP U21 EP U21 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 226RA UT WOS:000082034000047 ER EF