FN Thomson Reuters Web of Science™ VR 1.0 PT J AU KIMURA, A CHARLOT, LA GELLES, DS BAER, DR JONES, RH AF KIMURA, A CHARLOT, LA GELLES, DS BAER, DR JONES, RH TI IRRADIATION INDUCED CHANGES IN THE GRAIN-BOUNDARY CHEMISTRY OF HIGH-MANGANESE LOW ACTIVATION MARTENSITIC STEELS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID SEGREGATION AB The effects of neutron irradiation (10 dpa at 638 K, FFTF/MOTA) on solute segregation to the grain boundaries in high-manganese martensitic steels were investigated using Auger electron spectroscopy (AES). The AES spectrum obtained from the grain boundaries in martensitic steels was significantly influenced by neutron irradiation. Neutron irradiation caused a marked increase in the amount of intergranular segregation of manganese in 12%Cr-6%Mn-1%W steel, while no significant increases in sulfur and/or phosphorus segregations were found in the steel. In 9%Cr-2%Mn-1%W steel, a large amount of silicon as well as a small amount of manganese segregation at grain boundaries was induced by the irradiation. The following mechanisms of irradiation induced embrittlement are proposed; (1) neutron irradiation induced intergranular segregation of manganese causes a reduction of grain boundary cohesive force, (2) intergranular segregation of silicon reduces carbon concentration at grain boundaries by a site competition mechanism resulting in the weakening of the grain boundary strength. Another possible explanation involves grain boundary precipitation. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP KIMURA, A (reprint author), MURORAN INST TECHNOL, 27-1 MIZUMOTO, MURORAN, HOKKAIDO 050, JAPAN. RI Baer, Donald/J-6191-2013 OI Baer, Donald/0000-0003-0875-5961 NR 12 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 885 EP 889 DI 10.1016/0022-3115(92)90600-P PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700048 ER PT J AU KLUEH, RL ALEXANDER, DJ AF KLUEH, RL ALEXANDER, DJ TI HEAT-TREATMENT EFFECTS ON TOUGHNESS OF 9CR-1MOVNB AND 12CR-1MOVW STEELS IRRADIATED AT 365-DEGREES-C SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The 9Cr-1MoVNb and 12Cr-1MoVW steels were austenitized at 1040 and 1100-degrees-C to produce different prior austenite grain sizes, after which they were given different tempering treatments (1 h at 760-degrees-C or 2.5 h at 780-degrees-C). Subsize Charpy impact specimens from these materials were irradiated at 365-degrees-C up to 5 dpa. For 9Cr-1MoVNb steel in the unirradiated condition, the smaller the prior austenite grain size and the higher the tempering temperature, the lower the ductile-brittle transition temperature (DBTT). Regardless of the DBTT in the unirradiated condition, however, the DBTT shift for 9Cr-1MoVNb steel due to irradiation was the same for all heat treatments. This means heat treatment can be used to ensure a lower DBTT before and after irradiation. The 12Cr-1MoVW steel showed little effect of heat treatment on DBTT in the unirradiated condition, and the shift in DBTT was relatively constant. Thus, it appears that heat treatment cannot be used to reduce the effect of irradiation on DBTT for this steel. RP KLUEH, RL (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831, USA. NR 10 TC 11 Z9 11 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 896 EP 900 DI 10.1016/0022-3115(92)90602-H PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700050 ER PT J AU CHUNG, HM SMITH, DL AF CHUNG, HM SMITH, DL TI CORRELATION OF MICROSTRUCTURE AND TENSILE AND SWELLING BEHAVIOR OF NEUTRON-IRRADIATED VANADIUM ALLOYS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The microstructures of V-Ti, V-Cr-Ti, and V-Ti-Si alloys were characterized by transmission electron microscopy after neutron irradiation in the Fast Flux Test Facility (FFTF) at 420 and 600-degrees-C up to 114 dpa. Two types of irradiation-induced precipitates were identified, i.e., Ti2O and Ti5(Si,P)3. Thermal precipitates of Ti(O,N,C) were also observed in all unirradiated and irradiated specimens. Copious precipitation of the Ti5(Si,P)3 phase was associated with superior resistance to void swelling. In specimens with significant swelling, Ti5(Si,P)3 Precipitation was negligible. Ductility is significantly reduced when the precipitation of Ti20 and Ti5(Si,P)3 is pronounced. These observations indicate that initial composition, fabrication processes, and irradiation-induced precipitation are interrelated and are important factors to consider in developing an optimized alloy. RP CHUNG, HM (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 15 TC 24 Z9 24 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 942 EP 947 DI 10.1016/0022-3115(92)90612-O PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700060 ER PT J AU GARNER, FA GELLES, DS TAKAHASHI, H OHNUKI, S KINOSHITA, H LOOMIS, BA AF GARNER, FA GELLES, DS TAKAHASHI, H OHNUKI, S KINOSHITA, H LOOMIS, BA TI HIGH SWELLING RATES OBSERVED IN NEUTRON-IRRADIATED V-CR AND V-SI BINARY-ALLOYS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID VANADIUM ALLOYS AB Additions of 5 to 14 wt.% chromium to vanadium lead to very large swelling rates during neutron irradiation of the binary alloys, with swelling increasing strongly at higher irradiation temperatures. Addition of 2 wt.% silicon to vanadium also leads to very large swelling rates but swelling decreases with increasing irradiation temperature. Addition of 1 wt.% zirconium does not yield high swelling rates, however. C1 HOKKAIDO UNIV, SAPPORO, HOKKAIDO 060, JAPAN. ARGONNE NATL LAB, ARGONNE, IL 60439 USA. RP GARNER, FA (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 9 TC 26 Z9 26 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 948 EP 951 DI 10.1016/0022-3115(92)90613-P PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700061 ER PT J AU TORTORELLI, PF AF TORTORELLI, PF TI DISSOLUTION KINETICS OF STEELS EXPOSED IN LEAD-LITHIUM AND LITHIUM ENVIRONMENTS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID STAINLESS-STEELS; CORROSION; PB-17LI; SYSTEMS AB An analysis of weight loss kinetics was made for type 316 stainless steel and Fe-12Cr-1MoVW steel in thermally convective Pb-17 at.% Li (500-degrees-C) and lithium (600-degrees-C). For both steels, the kinetics are similar in lithium and Pb-17Li if the comparison is made at a temperature where solubility-driven mass transport dominates. At the temperatures of this study, a model based on paralinear reaction kinetics accurately described the weight loss curves for type 316 stainless steel in both liquid metals, while the ferritic steel rapidly achieved weight losses that were linear with time. The differences between the kinetic behavior of the two steels can thus be interpreted in terms of the preferential dissolution reactions and localized attack observed for the austenitic alloy. RP TORTORELLI, PF (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 18 TC 20 Z9 20 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 965 EP 969 DI 10.1016/0022-3115(92)90617-T PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700065 ER PT J AU EDGEMON, GL TORTORELLI, PF BELL, GEC AF EDGEMON, GL TORTORELLI, PF BELL, GEC TI EFFECTS OF COMPOSITIONAL MODIFICATIONS ON THE SENSITIZATION BEHAVIOR OF FE-CR-MN STEELS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID AUSTENITIC STAINLESS-STEELS; MANGANESE AB Fe-Cr-Mn steels may possibly be used in conjunction with aqueous blankets or coolants in a fusion device. Therefore, standard chemical immersion (modified Strauss) tests were conducted to characterize the effects of compositional modifications on the thermal sensitization behavior of these steels. A good correlation among weight losses, intergranular corrosion, and cracking was found. The most effective means of decreasing their susceptibility was through reduction of the carbon concentration of these steels to 0.1%, but the sensitization resistance of Fe-Cr-Mn-0.1 C compositions was still inferior to type 304L and other similar stainless steels. Alloying additions that form stable carbides did not have a very significant influence on the sensitization behavior. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP EDGEMON, GL (reprint author), GEORGIA INST TECHNOL,ATLANTA,GA 30332, USA. RI Tortorelli, Peter/E-2433-2011 NR 11 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 997 EP 1001 DI 10.1016/0022-3115(92)90624-T PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700072 ER PT J AU SIMONEN, EP JONES, RH BRUEMMER, SM AF SIMONEN, EP JONES, RH BRUEMMER, SM TI RADIATION EFFECTS ON GRAIN-BOUNDARY CHEMISTRY RELEVANT TO STRESS-CORROSION CRACKING OF STAINLESS-STEELS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID SEGREGATION AB Calculated grain boundary microchemistries are related to the potential for irradiation-assisted stress corrosion cracking (IASCC) for the proposed International Thermonuclear Experimental Reactor (ITER) conditions of irradiation temperature and dose. Radiation-induced segregation predictions are calibrated to measured segregation at temperatures above 250-degrees-C and are then used to extrapolate to expected segregation behavior for ITER temperatures of 50 to 100-degrees-C. Chromium depletion and impurity enrichment is predicted to occur for ITER conditions. Although the predicted segregation is less than that observed for light-water reactor conditions (LWR) experience with cracking in nonirradiation environments suggest that cracking may still occur because of possible differences in stress and environment. Experiments are required to verify the predicted ITER microchemistries and to demonstrate that the microchemistries will not promote cracking for specific ITER conditions. RP SIMONEN, EP (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 23 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1002 EP 1006 DI 10.1016/0022-3115(92)90625-U PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700073 ER PT J AU JONES, RH HENAGER, CH AF JONES, RH HENAGER, CH TI EFFECT OF GAMMA-IRRADIATION ON STRESS-CORROSION BEHAVIOR OF AUSTENITIC STAINLESS-STEEL UNDER ITER-RELEVANT CONDITIONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB Stress corrosion crack growth tests were conducted on Type 316 SS and PCA sensitized to 5 C/cm2 at 100-degrees-C in deionized water with 10 ppm Cl-. A constant K test specimen was cyclically loaded at 1 Hz with an R of 0.5 and a DELTAK of 11 MPa square-root m in an autoclave immersed in a Co-60 source. Tests were conducted at 0, 2.3 X 10(2), and 6.5 X 10(5) rad/h. The average crack velocities were found to be 2.0 and 1.5 X 10(5) mm/cycle for the Type 316 SS and PCA, respectively, in the absence of gamma irradiation and 1.3 and 0.74 X 10(-5) MM/cycle, respectively, at both gamma fluxes. Gamma irradiation may have shifted the potential to more reducing rather than more oxidizing, as observed by others in high-temperature water with low 02 activity. This study suggests that there is no significant detrimental effect of gamma irradiation on the subcritical crack growth behavior of unirradiated Type 316 SS and PCA at ITER-relevant conditions. RP JONES, RH (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. OI Henager, Chuck/0000-0002-8600-6803 NR 9 TC 2 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1012 EP 1017 DI 10.1016/0022-3115(92)90627-W PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700075 ER PT J AU INAZUMI, T BELL, GEC MAZIASZ, PJ KONDO, T AF INAZUMI, T BELL, GEC MAZIASZ, PJ KONDO, T TI RADIATION-INDUCED SENSITIZATION OF A TITANIUM-MODIFIED AUSTENITIC STAINLESS-STEEL IRRADIATED IN A SPECTRAL-TAILORED EXPERIMENT AT 60-DEGREES-C-400-DEGREES-C SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID INDUCED SEGREGATION; ALLOYS AB The radiation-induced sensitization of a titanium-modified austenitic stainless steel (PCA) irradiated at 60 to 400-degrees-C to 7 dpa in a spectral-tailored experiment was investigated by the electrochemical potentiokinetic reactivation (EPR) test technique using miniaturized specimens. The reactivation charge of PCA was increased by irradiation at 200 to 400-degrees-C, as compared to unirradiated control specimens. The occurrence of grain boundary sensitization was detected for the specimen irradiated at 400-degrees-C, but not detected for the specimens irradiated at the lower temperatures. Localized attack across grain faces was observed after EPR testing for the specimens irradiated at 200 to 400-degrees-C. The attack may be attributed to the occurrence of localized chromium depletion by RIS to matrix defect sinks. The reactivation behavior of PCA was not affected by the irradiation at 60-degrees-C. C1 JAPAN ATOM ENERGY RES INST,DEPT FUELS & MAT RES,TOKAI,IBARAKI 31911,JAPAN. OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. NR 16 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1018 EP 1022 DI 10.1016/0022-3115(92)90628-X PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700076 ER PT J AU GREENWOOD, LR GARNER, FA OLIVER, BM AF GREENWOOD, LR GARNER, FA OLIVER, BM TI HELIUM GENERATION RATES IN ISOTOPICALLY TAILORED FE-CR-NI ALLOYS IRRADIATED IN FFTF MOTA SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID DPA RATIO; NEUTRON; VARIABLES; NI-59 AB Three Fe-Cr-Ni alloys have been doped with 0.4% Ni-59 for side-by-side irradiations of doped and undoped materials in order to determine the effects of fusion-relevant levels of helium production on microstructural development and mechanical properties. The alloys were irradiated in three successive cycles of the Materials Open Test Assembly (MOTA) located in the Fast Flux Test Facility (FFTF). Following irradiation, helium levels were measured by isotope dilution mass spectrometry. The highest level of helium achieved in doped alloys was 172 appm at 9.1 dpa for a helium(appm)-to-dpa ratio of 18.9. The overall pattern of predicted helium generation rates in doped and undoped alloys is in good agreement with the helium measurements. C1 ROCKWELL INT CORP, ROCKETDYNE DIV, CANOGA PK, CA 91303 USA. RP GREENWOOD, LR (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 16 TC 8 Z9 8 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1051 EP 1055 DI 10.1016/0022-3115(92)90635-X PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700083 ER PT J AU SUZUKI, M HISHINUMA, A YAMANOUCHI, N TAMURA, M ROWCLIFFE, AF AF SUZUKI, M HISHINUMA, A YAMANOUCHI, N TAMURA, M ROWCLIFFE, AF TI ALLOY PREPARATION FOR STUDYING THE EFFECT OF HYDROGEN-PRODUCTION DURING NEUTRON-IRRADIATION USING FE-54 ISOTOPE SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID STEEL; HFIR AB In a fusion reactor environment, hydrogen will be generated from (n, p) reactions at a rate of approximately 30 appm/dpa in ferritic steels. By the use of (n, p) reaction of Fe-54, hydrogen generation can be simulated in fission reactor irradiation. However, the difficulty with this approach is that Fe-54 is only available in gram quantities. A technique has been developed for the preparation of 4-g quantities of alloy F-82H (8Cr-2WVTa), in which all natural iron is replaced by the isotope Fe-54. Irradiation of this alloy in a target position of HFIR will result in a hydrogen generation rate of approximately 20 appm/dpa. C1 NIPPON KOKAN,KAWASAKI 210,JAPAN. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP SUZUKI, M (reprint author), JAPAN ATOM ENERGY RES INST,TOKAI,IBARAKI 31911,JAPAN. NR 14 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1056 EP 1059 DI 10.1016/0022-3115(92)90636-Y PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700084 ER PT J AU HEINISCH, HL SINGH, BN AF HEINISCH, HL SINGH, BN TI MOLECULAR-DYNAMICS AND BINARY COLLISION MODELING OF THE PRIMARY DAMAGE STATE OF COLLISION CASCADES SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID ENERGY DISPLACEMENT CASCADES AB Quantitative information on defect production in cascades in copper obtained from recent molecular dynamics simulations is compared to defect production information determined earlier with a model based on the binary collision approximation (BCA). The total numbers of residual defects, the fractions of them that are mobile, and the sizes of immobile clusters compare favorably, especially when the termination conditions of the two simulations are taken into account. A strategy is laid out for integrating the details of the cascade quenching phase determined by MD into a BCA-based model that is practical for simulating much higher energies and longer times than MD alone can achieve. The extraction of collisional phase information from MD simulations and the correspondence of MD and BCA versions of the collisional phase is demonstrated at low energy. C1 RISO NATL LAB, DK-4000 ROSKILDE, DENMARK. RP HEINISCH, HL (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 13 TC 7 Z9 7 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1083 EP 1087 DI 10.1016/0022-3115(92)90641-W PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700089 ER PT J AU GREENWOOD, LR GARNER, FA HEINISCH, HL AF GREENWOOD, LR GARNER, FA HEINISCH, HL TI THE IMPACT OF SPECTRAL EFFECTS IN FAST-REACTORS ON DATA-ANALYSIS AND DEVELOPMENT OF FISSION FUSION CORRELATIONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID NEUTRON-SPECTRUM; CASCADES AB Models describing the production of freely migrating defects (FMD) during neutron irradiations were applied to materials studies in fast reactors, where neutron spectral effects have been largely ignored. Calculations for the Experimental Breeder Reactor II (EBR-II) and the Fast Flux Test Facility (FFTF) show that effects of spectral differences between in-core and out-of-core positions are significantly larger on the basis of freely migrating defects than on the basis of dpa. As an example, data on swelling behavior measured both in-core and out-of-core in EBR-II show nearly a linear dependence on FMD production but not on dpa. RP GREENWOOD, LR (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 17 TC 1 Z9 1 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1096 EP 1100 DI 10.1016/0022-3115(92)90644-Z PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700092 ER PT J AU KATOH, Y STOLLER, RE KOHNO, Y KOHYAMA, A AF KATOH, Y STOLLER, RE KOHNO, Y KOHYAMA, A TI MODELING THE EFFECTS OF DAMAGE RATE AND HE/DPA RATIO ON MICROSTRUCTURAL EVOLUTION SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID CRITICAL RADIUS AB The effects of displacement damage Tate, helium generation Tate and other irradiation conditions on irradiation-induced microstructural changes and swelling in an austenitic stainless steel were investigated by numerical calculations. The computer model developed in this study dynamically integrates rate equations which describe, the evolution of point defects, small point defect clusters including cascade vacancy clusters, cavity nucleation and the evolution of the cavity size distribution. The model was calibrated using data obtained from a dual-beam ion irradiation experiment. In this experiment, solution annealed type 316 stainless steel was irradiated by 4 MeV nickel ions with simultaneous implantation of helium ions up to 25 dpa at 873 K. The He/dpa ratios and the displacement damage rates were in the range of 1 to 50 appm He/dpa and 2 X 10(-3) to 1 X 10(-2) dpa/sec, respectively. These experiments showed that helium effects on dislocation evolution significantly influence the nucleation and growth of cavities. The predicted effects of helium over a broad range of damage rates were calculated using the calibrated model. C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. RP KATOH, Y (reprint author), UNIV TOKYO,DEPT MAT SCI,7-3-1 HONGO,TOKYO 113,JAPAN. RI Stoller, Roger/H-4454-2011; OI Katoh, Yutai/0000-0001-9494-5862 NR 12 TC 10 Z9 10 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1144 EP 1149 DI 10.1016/0022-3115(92)90654-4 PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700102 ER PT J AU MUROGA, T HEINISCH, HL SOMMER, WF FERGUSON, PD AF MUROGA, T HEINISCH, HL SOMMER, WF FERGUSON, PD TI A COMPARISON OF MICROSTRUCTURES IN COPPER IRRADIATED WITH FISSION, FUSION AND SPALLATION NEUTRONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The microstructures of pure copper irradiated to low doses at 36-90-degrees-C with spallation neutrons, fusion neutrons and fission neutrons are compared. The defect cluster densities for the spallation and fusion neutrons are very similar when compared on the basis of displacement per atom (dpa). In both cases, the density increases in proportion to the square root of the dpa. The difference in defect density between fusion neutrons and fission neutrons corresponds with differences observed in data on the yield stress changes. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. UNIV MISSOURI, ROLLA, MO 65401 USA. RP MUROGA, T (reprint author), KYUSHU UNIV, APPL MECH RES INST, KASUGA, FUKUOKA 816, JAPAN. RI U-ID, Kyushu/C-5291-2016; Kyushu, RIAM/F-4018-2015; OI Ferguson, Phillip/0000-0002-7661-4223 NR 14 TC 12 Z9 12 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1150 EP 1154 DI 10.1016/0022-3115(92)90655-5 PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700103 ER PT J AU SINGH, BN HORSEWELL, A GELLES, DS GARNER, FA AF SINGH, BN HORSEWELL, A GELLES, DS GARNER, FA TI VOID SWELLING IN COPPER AND COPPER-ALLOYS IRRADIATED WITH FISSION NEUTRONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID DPA AB Specimens of pure copper and copper alloys (Cu-5Ni, Cu-Cr-Zr) were irradiated with fission neutrons. Radiation damage microstructures were determined by transmission electron microscopy (TEM). The change in volume due to irradiation was obtained by density change measurements. The void nucleation and growth are found to be significantly affected by the presence of 5% Ni; the effects observed in the present experiments are directly opposite to the findings reported earlier on the Cu-5% Ni alloy irradiated with 1 MeV electrons. The swelling is found to be significantly reduced in Cu-Cr-Zr alloy. The implications of these results are discussed in terms of spectrum and rate effects. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP SINGH, BN (reprint author), RISO NATL LAB, DEPT MAT, DK-4000 ROSKILDE, DENMARK. OI Horsewell, Andy/0000-0003-4297-2564 NR 13 TC 16 Z9 18 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1172 EP 1176 DI 10.1016/0022-3115(92)90659-9 PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700107 ER PT J AU HEINISCH, HL HAMILTON, ML SOMMER, WF FERGUSON, PD AF HEINISCH, HL HAMILTON, ML SOMMER, WF FERGUSON, PD TI TENSILE PROPERTY CHANGES OF METALS IRRADIATED TO LOW-DOSES WITH FISSION, FUSION AND SPALLATION NEUTRONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID COPPER AB Radiation effects due to low doses of spallation neutrons are compared directly to those produced by fission and fusion neutrons. Yield stress changes of pure Cu, alumina dispersion strengthened Cu, and AISI 316 stainless steel irradiated at 36-55-degrees-C in the Los Alamos Spallation Radiation Effects Facility (LASREF) are compared with earlier results of irradiations at 90-degrees-C using 14 MeV D-T fusion neutrons at the Rotating Target Neutron Source and fission reactor neutrons in the Omega West Reactor. At doses up to 0.04 displacements per atom (dpa), the yield stress changes due to the three quite different neutron spectra correlate well on the basis of dpa in the stainless steel and the Cu alloy. However, in pure Cu, the measured yield stress changes due to spallation neutrons were anomalously small and should be verified by additional irradiations. With the exception of pure Cu, the low dose, low temperature experiments reveal no fundamental differences in radiation hardening by fission, fusion or spallation neutrons when compared on the basis of dpa. C1 LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. UNIV MISSOURI, ROLLA, MO 65401 USA. RP HEINISCH, HL (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. OI Ferguson, Phillip/0000-0002-7661-4223 NR 14 TC 16 Z9 16 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1177 EP 1182 DI 10.1016/0022-3115(92)90660-D PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700108 ER PT J AU KIMOTO, T ALLEN, CW REHN, LE AF KIMOTO, T ALLEN, CW REHN, LE TI GROWTH-RATE OF DISLOCATION LOOP IN FE-NI-CR ALLOY UNDER KR+ ION AND ELECTRON-IRRADIATION SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB In order to examine the effect of irradiating particle species on the growth rate of radiation-induced dislocation loops, a solution-annealed Fe-25Ni- 15Cr-0.02C alloy was irradiated at 723 K first by (1) 1.5 MeV Kr+ ions for 2520 s, then by (2) 1.5 MeV Kr+ ions and 1.0 MeV electrons simultaneously for 780 s, and finally by (3) 1.0 MeV electrons for 780 s with the HVEM-tandem facility in Argonne National Laboratory. The calculated damage rate by 1.5 MeV Kr+ ions was 5.8 X 10(-4) dpa/s, and that by 1.0 MeV electrons was 1 X 10(-4) dpa/s. The growth rate of a dislocation loop located at the center of the specimen was 7 X 10(-3) nm/s for the Kr+ ion irradiation, 4 X 10(-2) nm/s for the simultaneous Kr+ and electron irradiation, and (2-3) X 10(-2) nm/s for the electron irradiation. This implies that the electron irradiation is about 19 times more effective in the growth of radiation-induced dislocation loops than the Kr+ ion irradiation. The dislocation loop growth rate under the simultaneous Kr+ and electron irradiation is higher than the sum of the growth rates under the individual Kr+ and electron irradiations. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP KIMOTO, T (reprint author), NATL RES INST MET,TSUKUBA,IBARAKI 305,JAPAN. NR 6 TC 6 Z9 6 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1194 EP 1197 DI 10.1016/0022-3115(92)90663-6 PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700111 ER PT J AU MIYAHARA, K GARNER, FA HOSOI, Y AF MIYAHARA, K GARNER, FA HOSOI, Y TI MICROSTRUCTURES OF NEUTRON-IRRADIATED FE-12CR-XMN (X = 15-30) TERNARY ALLOYS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID FE-CR-MN; NI ALLOYS; STEELS AB The Fe-Cr-Mn alloy system is being studied as an alternative to the Fe-Cr-Ni system because of the desire to reduce long-term radioactivation in fusion power devices. In this study four Fe-12Cr-X Mn (X = 15, 20, 25, 30 wt.%) alloys were irradiated in FFTF to 20 dpa at 643 K and 40 dpa at 679, 793 and 873 K to investigate the influence of manganese content on void swelling and phase stability. These results confirm and expand the results of earlier studies which indicate that the Fe-Cr-Mn system is relatively unstable compared to that of the Fe-Cr-Ni system, with alpha and sigma phases forming as a consequence of thermal aging or high temperature irradiation. C1 PACIFIC NW LAB, DEPT MAT SCI, RICHLAND, WA 99352 USA. RP MIYAHARA, K (reprint author), NAGOYA UNIV, DEPT MAT SCI & ENGN, FUROH CHO, CHIKUSA KU, NAGOYA, AICHI 464, JAPAN. NR 20 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1198 EP 1203 DI 10.1016/0022-3115(92)90664-7 PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700112 ER PT J AU WOO, CH SINGH, BN GARNER, FA AF WOO, CH SINGH, BN GARNER, FA TI PRODUCTION BIAS - A PROPOSED MODIFICATION OF THE DRIVING FORCE FOR VOID SWELLING UNDER CASCADE DAMAGE CONDITIONS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID HIGH NEUTRON FLUENCE; IRRADIATION CREEP; DIFFUSION; BEHAVIOR; COPPER; ALLOYS; STEEL AB A new concept of point defect production as the main driving force for void swelling under cascade damage conditions is proposed. This concept takes into account the recombination and formation of immobile clusters and loops of vacancies and interstitials th the cascade region. The lifetimes of the clusters and loops due to desolution are strong functions of the temperature, as well as their vacancy and interstitial nature. The resulting biased production of free point defects from the internal sources is shown to be a strong driving force for void swelling. The characteristics of void swelling due to production bias are described and compared with experimental results. We conclude that the production bias concept provides a good description of void swelling under cascade damage conditions. C1 RISO NATL LAB, DK-4000 ROSKILDE, DENMARK. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP WOO, CH (reprint author), AECL, RES, WHITESHELL LABS, PINAWA R0E 1L0, MANITOBA, CANADA. RI Woo, Chung Ho/E-3657-2010 NR 40 TC 14 Z9 14 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1224 EP 1228 DI 10.1016/0022-3115(92)90669-C PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700117 ER PT J AU SEKIMURA, N GARNER, FA GRIFFIN, RD AF SEKIMURA, N GARNER, FA GRIFFIN, RD TI THE EFFECT OF HELIUM ON MICROSTRUCTURAL EVOLUTION AND MECHANICAL-PROPERTIES OF AUSTENITIC STEELS AS DETERMINED BY SPECTRAL TAILORING EXPERIMENTS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID REACTOR IRRADIATION; NI ALLOYS; FISSION; DEPENDENCE; TERNARIES; NEUTRONS AB Fe-15Cr-xNi alloys irradiated at both low (0.66 to 1.2) and very high (27 to 58) helium/dpa levels exhibit significantly different levels of strengthening due to an unprecedented refinement of cavity microstructure at the very high helium levels. When compounded with the nickel dependence of helium generation, the cavity distribution for some irradiation conditions and alloy compositions can be driven below the critical radius for bubble-to-void conversion, leading to a delay in swelling. The critical radius also appears to be dependent on the nickel level. The refinement may not have resulted from the high helium levels alone, however, but may also have been influenced by differences in displacement rate and temperature history in the two experiments. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV WISCONSIN, MADISON, WI 53706 USA. RP SEKIMURA, N (reprint author), UNIV TOKYO, TOKYO 113, JAPAN. NR 21 TC 11 Z9 11 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1234 EP 1238 DI 10.1016/0022-3115(92)90671-7 PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700119 ER PT J AU HAMILTON, ML GARNER, FA AF HAMILTON, ML GARNER, FA TI THE INFLUENCE OF HELIUM ON MECHANICAL-PROPERTIES OF MODEL AUSTENITIC ALLOYS, DETERMINED USING NI-59 ISOTOPIC TAILORING AND FAST-REACTOR IRRADIATION SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID HIGH NEUTRON FLUENCE AB Tensile testing on model Fe-Cr-Ni alloys removed from four discharges of the 59Ni is0topic doping experiment in FFTF indicates that helium/dpa ratios typical of fusion reactors do not produce changes in the yield strength or elongation that are significantly different from those at much lower helium generation rates. It also appears that tensile properties approach a saturation level that is dependent only on the final irradiation temperature, but not prior temperature history or thermomechanical starting condition. RP HAMILTON, ML (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 16 TC 18 Z9 18 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1239 EP 1243 DI 10.1016/0022-3115(92)90672-8 PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700120 ER PT J AU SEKIMURA, N GARNER, FA NEWKIRK, JW AF SEKIMURA, N GARNER, FA NEWKIRK, JW TI SILICONS ROLE IN DETERMINING SWELLING IN NEUTRON-IRRADIATED FE-NI-CR-SI ALLOYS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID VOID NUCLEATION; PHOSPHORUS AB Two silicon-modified alloy series, one based on Fe-15Cr-20Ni and another based on Fe-15Cr-25Ni were irradiated at target temperatures between 399 and 649-degrees-C in EBR-II. The influence of silicon on swelling is more complex than previously envisioned and indicates that silicon plays two or more competing roles while in solution. Radiation-induced formation of gamma'(Ni3Si), precipitates is dependent on silicon and nickel content, as well as temperature. Precipitation of gamma' appears to play only a minor role in void formation. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV MISSOURI, ROLLA, MO 65401 USA. RP SEKIMURA, N (reprint author), UNIV TOKYO, NUCL ENGN RES LAB, TOKYO 113, JAPAN. NR 12 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1244 EP 1247 DI 10.1016/0022-3115(92)90673-9 PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700121 ER PT J AU SINGH, BN HORSEWELL, A ELDRUP, M GARNER, FA AF SINGH, BN HORSEWELL, A ELDRUP, M GARNER, FA TI FISSION NEUTRON-IRRADIATION OF COPPER CONTAINING IMPLANTED AND TRANSMUTATION PRODUCED HELIUM SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB High purity copper containing approximately 100 appm helium was produced in two ways. In the first, helium was implanted by cyclotron at Harwell at 323 K. In the second method, helium was produced as a transmutation product in 800 MeV proton irradiation at Los Alamos, also at 323 K. The distributions of helium prior to fission neutron irradiation were determined by a combination of transmission electron microscopy (TEM) and positron annihilation techniques (PAT). These specimens, together with pure copper, were then irradiated with fission neutrons in a single capsule in fast flux test facility (FFTF) at approximately 686 +/- 5 K to a dose level of approximately 48 dpa (7.7 X 10(26) nm-2; E > 0.1 MeV). Investigation of the void and dislocation microstructures in the three specimens by TEM showed large differences between the specimens in void size and swelling. The observed differences as well as the effect of the presence of other transmutation produced impurity atoms in the 800 MeV proton irradiated copper will be discussed. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP SINGH, BN (reprint author), RISO NATL LAB, DEPT MAT, DK-4000 ROSKILDE, DENMARK. OI Horsewell, Andy/0000-0003-4297-2564 NR 14 TC 1 Z9 1 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1259 EP 1264 DI 10.1016/0022-3115(92)90676-C PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700124 ER PT J AU ALEXANDER, DE BIRTCHER, RC AF ALEXANDER, DE BIRTCHER, RC TI THE EFFECT OF ION IRRADIATION ON INERT-GAS BUBBLE MOBILITY SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID ALUMINUM; KRYPTON AB The effect of Al ion irradiation on the mobility of Xe gas bubbles in Al thin films was investigated. Transmission electron microscopy was used to determine bubble diffusivities in films irradiated and/or annealed at 673, 723 and 773 K. Irradiation increased bubble diffusivity by a factor of 2-9 over that due to thermal annealing alone. The Arrhenius behavior and dose rate dependence of bubble diffusivity are consistent with a radiation enhanced diffusion phenomenon affecting a volume diffusion mechanism of bubble transport. RP ALEXANDER, DE (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 10 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1289 EP 1294 DI 10.1016/0022-3115(92)90682-B PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700130 ER PT J AU STUBBINS, JF GARNER, FA AF STUBBINS, JF GARNER, FA TI SWELLING AND MICROSTRUCTURE OF HIGH-PURITY NICKEL IRRADIATED WITH FAST-NEUTRONS IN EBR-II SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The swelling of neutron-irradiated pure nickel in the annealed condition at approximately 14 dpa is strongly dependent on irradiation temperature. However, nickel in various cold worked conditions does not exhibit this sensitivity, reaching a saturation level of swelling that is relatively independent of temperature. The tendency toward saturation is thought to be a consequence of nickel's high stacking fault energy which precludes the formation of partial dislocations with their stronger level of pinning. This leads eventually to a collapse in the dislocation population, resulting in an imbalance of sink strengths and a strong reduction in the void growth rate. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP STUBBINS, JF (reprint author), UNIV ILLINOIS, URBANA, IL 61801 USA. NR 5 TC 14 Z9 14 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1295 EP 1299 DI 10.1016/0022-3115(92)90683-C PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700131 ER PT J AU STUBBINS, JF GARNER, FA AF STUBBINS, JF GARNER, FA TI A MICROSTRUCTURAL EXAMINATION OF THE MECHANICAL RESPONSE OF FE-CR-NI ALLOYS IRRADIATED AT 365-DEGREES-C USING ISOTOPIC TAILORING TO PRODUCE DIFFERENT HE/DPA RATIOS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID HIGH NEUTRON FLUENCE; HELIUM DPA RATIO; CREEP; VARIABLES; NI-59 AB A series of model Fe-15Cr-xNi-yP alloys with x = 25 or 45 and y = 0.001 or 0.04 wt.% were examined following irradiation to 10.3 dpa at 365-degrees-C. These alloys were irradiated both doped and undoped with the Ni-59 isotope to produce two levels of He generation during irradiation. This latter variable produced average He/dpa values of approximately 1 and 16 appm He/dpa in the undoped and doped cases, respectively. Microscopy examination indicates that the major influence of a high He/dpa ratio is to induce a higher void number density and a lower average void size than in identical alloy conditions with low He/dpa. The total swelling is not substantially affected, however. Compositional and thermal-mechanical treatment variables were found to influence the swelling behavior as much as the He production rate. However, in all cases the swelling was low, and irradiation-induced microstructures were similar regardless of starting condition. This convergence in microstructure is reflected in the mechanical properties where similar room temperature tensile properties were measured on irradiated specimens regardless of material starting condition. C1 PACIFIC NW LAB, DEPT CHEM, RICHLAND, WA 99352 USA. RP STUBBINS, JF (reprint author), UNIV ILLINOIS, DEPT NUCL ENGN, URBANA, IL 61801 USA. NR 16 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1300 EP 1304 DI 10.1016/0022-3115(92)90684-D PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700132 ER PT J AU WOO, CH GARNER, FA AF WOO, CH GARNER, FA TI A SIPA-BASED THEORY OF IRRADIATION CREEP IN THE LOW SWELLING RATE REGIME SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID DEFECT-DISLOCATION INTERACTION; HIGH NEUTRON FLUENCE; STAINLESS-STEEL; DIFFUSION; STRESS; INTERSTITIALS AB A model is presented which describes the major facets of the relationships between irradiation creep, void swelling and applied stress. The increasing degree of anisotropy in distribution of dislocation Burgers vectors with stress level plays a major role in this model. Although bcc metals are known to creep and swell at lower rates than fcc metals, it is predicted that the creep-swelling coupling coefficient is actually larger for bcc metals than for fcc metals. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP WOO, CH (reprint author), WHITESHELL LABS, REACTOR MAT RES BRANCH, PINAWA ROE 1LO, MANITOBA, CANADA. RI Woo, Chung Ho/E-3657-2010 NR 23 TC 16 Z9 16 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1309 EP 1312 DI 10.1016/0022-3115(92)90686-F PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700134 ER PT J AU KENIK, EA HOJOU, K AF KENIK, EA HOJOU, K TI RADIATION-INDUCED SEGREGATION IN FFTF-IRRADIATED AUSTENITIC STAINLESS-STEELS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article ID ALLOYS AB Analytical electron microscopy has been applied to radiation-induced segregation (RIS) to defect sinks in two austenitic stainless steels irradiated in the Fast Flux Test Facility to approximately 15 dpa at 520-degrees-C. RIS to faulted dislocation loops has been shown to be strongly dependent on loop size. Several mechanisms for this effect are discussed, including increased vacancy-driven RIS for large dislocation loop sizes. The spatial distribution of solutes near large dislocation loops is consistent with dominance of the inverse Kirkendall effect and not with an interstitial mechanism of RIS. In a nickel-stabilized austenite (USPCA), RIS to grain boundaries results in nickel enrichment and chromium depletion. In a manganese-stabilized austenite (EP838), manganese is the species strongly depleted at boundaries, resulting in little chromium depletion relative to that in USPCA. Therefore, EP838 should exhibit greater resistance to radiation-induced sensitization. Manganese depletion at grain boundaries in the EP838 may induce a loss of austenite stability, but that effect will be offset in part by an enrichment of nickel. C1 JAPAN ATOM ENERGY RES INST, TOKAI, IBARAKI 31911, JAPAN. RP KENIK, EA (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, POB 2008, OAK RIDGE, TN 37831 USA. NR 18 TC 27 Z9 27 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1331 EP 1335 DI 10.1016/0022-3115(92)90691-D PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700139 ER PT J AU GELLES, DS OHNUKI, S TAKAHASHI, H MATSUI, H KOHNO, Y AF GELLES, DS OHNUKI, S TAKAHASHI, H MATSUI, H KOHNO, Y TI ELECTRON-IRRADIATION EXPERIMENTS IN SUPPORT OF FUSION MATERIALS DEVELOPMENT SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB Microstructural evolution in response to 1 MeV electron irradiation has been investigated for three simple ferritic alloys, pure beryllium, pure vanadium, and two simple vanadium alloys over a range of temperatures and doses. Microstructural evolution in Fe-3Cr, Fe-9Cr and Fe-18Cr ferritic alloys is found to consists of crenulated, faulted a[100] loops and circular, unfaulted 1/2a[111] loops at low temperatures, but with only unfaulted loops of both types at high temperatures. The complex dislocation evolution is attributed to sigma phase precipifaults arising from chromium segregation to point defect sinks. Beryllium is found to be resistant to electron damage; the only effect observed was enhanced dislocation mobility. Pure vanadium, V-5Fe, and V-1Ni microstructural response was complicated by precipitation on heating to 400-degrees-C and above, but dislocation evolution was investigated in the range of room temperature to 300-degrees-C and at 600-degrees-C. The three materials behaved similarly, except that pure vanadium showed more rapid dislocation evolution. This difference does not explain the enhanced swelling observed in vanadium alloys. C1 HOKKAIDO UNIV, SAPPORO, HOKKAIDO 060, JAPAN. TOHOKU UNIV, SENDAI, MIYAGI 980, JAPAN. UNIV TOKYO, TOKYO 113, JAPAN. RP GELLES, DS (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 29 TC 6 Z9 6 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1336 EP 1341 DI 10.1016/0022-3115(92)90692-E PN B PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700140 ER PT J AU SUZUKI, M HAMADA, S MAZIASZ, PJ JITSUKAWA, S HISHINUMA, A AF SUZUKI, M HAMADA, S MAZIASZ, PJ JITSUKAWA, S HISHINUMA, A TI COMPOSITIONAL BEHAVIOR AND STABILITY OF MC-TYPE PRECIPITATES IN JPCA AUSTENITIC STAINLESS-STEEL DURING HFIR IRRADIATION SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID SWELLING RESISTANCE; FUSION AB The behavior of Ti-rich MC-type precipitates in the Japanese prime-candidate-alloy (JPCA) during irradiation in HFIR to 58 dpa at 300-degrees-C is described. Fine MC precipitates formed after irradiation to 34 dpa. The number density of MC particles decreased, however, as irradiation continued to 58 dpa. Chemical composition of the radiation produced MC phase particles was strongly dependent on precipitate size. MC precipitates produced by thermal aging prior to irradiation also showed the same size-dependent composition after irradiation. The relation between the size-dependent composition and the stability of the MC phase particles is discussed. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP SUZUKI, M (reprint author), JAPAN ATOM ENERGY RES INST,TOKAI,IBARAKI 31911,JAPAN. OI Maziasz, Philip/0000-0001-8207-334X NR 8 TC 7 Z9 7 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1351 EP 1355 DI 10.1016/0022-3115(92)90695-H PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700143 ER PT J AU SOMMER, WF FERGUSON, PD WECHSLER, MS AF SOMMER, WF FERGUSON, PD WECHSLER, MS TI NEUTRON-FLUX ENHANCEMENT AT LASREF SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The accelerator at the Los Alamos Meson Physics Facility produces a 1 mA beam of protons at an energy of 800 MeV. Since 1985, the Los Alamos Spallation Radiation Effects Facility (LASREF) has made use of the neutron flux that is generated as the incident protons interact with the nuclei in targets and a copper beam stop. A variety of basic and applied experiments in radiation damage and radiation effects have been completed. Recent studies indicate that the flux at LASREF can be increased by at least a factor of 10 from the present level of about 5 E + 17 m-2 S-1. This reqUires changing the beam stop material from Cu to W and optimizing the geometry of the beam-target interaction region. These studies are motivated by the need for a large volume, high energy, and high intensity neutron source in the development of materials for advanced energy concepts such as fusion reactors. C1 UNIV MISSOURI,ROLLA,MO 65401. IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011. RP SOMMER, WF (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. OI Ferguson, Phillip/0000-0002-7661-4223 NR 14 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1374 EP 1378 DI 10.1016/0022-3115(92)90700-U PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700148 ER PT J AU OHEARN, TB KUMAR, AS GREENWOOD, LR AF OHEARN, TB KUMAR, AS GREENWOOD, LR TI COMPARISON OF MEASURED AND CALCULATED TRANSMUTATION IN COPPER AT SPALLATION NEUTRON SOURCES SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB Calculations of transmutation product yields in copper are compared to experimental data in the 200-450 MeV range. Calculations were performed with the LAHET (Los Alamos high energy transport) computer code. Experimental data were obtained at the IPNS (intense pulsed neutron source). The calculations generally agree with the data within a factor of 2 indicating that the LAHET code can be used to predict nuclear transmutation rates at spallation neutron sources. In general, the LAHET code underestimates the production of nuclides. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP OHEARN, TB (reprint author), UNIV MISSOURI, MAT RES CTR, ROLLA, MO 65401 USA. RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 7 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1383 EP 1386 DI 10.1016/0022-3115(92)90702-M PN B PG 4 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700150 ER PT J AU CLINARD, FW FARNUM, EH GRISCOM, DL MATTAS, RF MEDLEY, SS WIFFEN, FW WOJTOWICZ, SS YOUNG, KM ZINKLE, SJ AF CLINARD, FW FARNUM, EH GRISCOM, DL MATTAS, RF MEDLEY, SS WIFFEN, FW WOJTOWICZ, SS YOUNG, KM ZINKLE, SJ TI MATERIALS ISSUES IN DIAGNOSTIC SYSTEMS FOR BPX AND ITER SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL ID RADIATION; SILICA; IRRADIATION; ABSORPTION; DEFECT; DAMAGE; GLASS; SIO2 AB Diagnostic systems in advanced D-T-burning fusion devices will be subjected to intense fluxes and fluences of high-energy neutrons and gamma rays. Materials used in these systems may suffer significant degradation of structural, optical, and electrical properties, either promptly upon irradiation or after accumulation of structural damage. Of particular concern are windows, optical fibers, reflectors, and insulators. Many materials currently specified for these components are known to degrade under anticipated operating conditions. However, materials selection and modification based on results from an appropriate irradiation testing program, when combined with design optimization for location, shielding, and ease of replacement, should point the way to development of acceptable systems. C1 USN,RES LAB,WASHINGTON,DC 20375. ARGONNE NATL LAB,ARGONNE,IL 60439. PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543. US DOE,WASHINGTON,DC 20585. GEN ATOM CO,SAN DIEGO,CA 92186. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP CLINARD, FW (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544, USA. OI Zinkle, Steven/0000-0003-2890-6915 NR 30 TC 19 Z9 19 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1399 EP 1403 DI 10.1016/0022-3115(92)90705-P PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700153 ER PT J AU ATTAYA, H SMITH, D AF ATTAYA, H SMITH, D TI ACTIVATION-ANALYSES FOR DIFFERENT FUSION STRUCTURAL ALLOYS SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON FUSION REACTOR MATERIALS ( ICFRM-5 ) CY NOV 17-22, 1991 CL CLEARWATER, FL AB The leading candidate structural materials, viz., the vanadium alloys, the nickel or the manganese stabilized austenitic steels, and the ferritic steels, are analysed in terms of their induced activation in the TPSS fusion power reactor. The TPSS reactor has 1950 MW fusion power and inboard and outboard average neutron wall loading of 3.75 and 5.35 MW/M2, respectively. The results show that, after one year of continuous operation, the vanadium alloys have the least radioactivity at reactor shutdown. The maximum difference between the induced radioactivity in the vanadium alloys and in the other iron-based alloys occurs at about ten years after reactor shutdown. At this time, the FW-vanadium activation is three orders of magnitude less than other alloys' FW activation. RP ATTAYA, H (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP PY 1992 VL 191 BP 1469 EP 1473 DI 10.1016/0022-3115(92)90719-2 PN B PG 5 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA JY947 UT WOS:A1992JY94700167 ER PT J AU ATKINS, HL WEBER, DA SUSSKIND, H THOMAS, SR AF ATKINS, HL WEBER, DA SUSSKIND, H THOMAS, SR TI MIRD DOSE ESTIMATE REPORT NO 16 - RADIATION ABSORBED DOSE FROM TECHNETIUM-99M-DIETHYLENETRIAMINEPENTAACETIC ACID AEROSOL SO JOURNAL OF NUCLEAR MEDICINE LA English DT Article ID PERMEABILITY C1 BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973. SUNY STONY BROOK,HLTH SCI CTR,DEPT RADIOL,STONY BROOK,NY 11794. UNIV CINCINNATI,COLL MED,DEPT RADIOL,CINCINNATI,OH 45221. NR 10 TC 17 Z9 17 U1 0 U2 0 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD SEP PY 1992 VL 33 IS 9 BP 1717 EP 1719 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA JM032 UT WOS:A1992JM03200031 PM 1517853 ER PT J AU FOWLER, JS WOLF, AP VOLKOW, ND BRODIE, JD HIESIGER, E AF FOWLER, JS WOLF, AP VOLKOW, ND BRODIE, JD HIESIGER, E TI THE VALUE OF THE PUTRESCINE EXPERIENCE SO JOURNAL OF NUCLEAR MEDICINE LA English DT Note ID BRAIN-TUMORS; PET C1 NYU,SCH MED,NEW YORK,NY 10003. RP FOWLER, JS (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. FU NINDS NIH HHS [NS15638] NR 10 TC 1 Z9 1 U1 0 U2 0 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD SEP PY 1992 VL 33 IS 9 BP 1720 EP 1721 PG 2 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA JM032 UT WOS:A1992JM03200032 PM 1489409 ER PT J AU WILCOX, BP SBAA, M BLACKBURN, WH MILLIGAN, JH AF WILCOX, BP SBAA, M BLACKBURN, WH MILLIGAN, JH TI RUNOFF PREDICTION FROM SAGEBRUSH RANGELANDS USING WATER EROSION PREDICTION PROJECT (WEPP) TECHNOLOGY SO JOURNAL OF RANGE MANAGEMENT LA English DT Article ID AMPT INFILTRATION EQUATION; EFFECTIVE CAPILLARY-PRESSURE; SPUR HYDROLOGY MODEL; GREEN; PARAMETERS; SOILS; RAIN AB Runoff prediction is an important component of any process-based soil erosion model. In this paper we evaluate the runoff prediction capabilities of a new soil erosion model, WEPP, on sagebrush rangelands. Particular attention was given to th parameter estimation techniques used in WEPP to predict infiltration. Runoff volume predicted by WEPP is based on the Green and Ampt infiltration equation. Predicted runoff was compared to observed runoff from 90 large plot rainfall simulation experiments on sagebrush rangelands. There was a poor correlation between predicted and observed runoff when the Green and Ampt parameters were estimated using the parameter estimation techniques. Runoff prediction was improved when parameters were determined from field measurements. Additional refinement of the Green and Ampt parameterization techniques is needed for continued improvement of WEPP. C1 UNIV IDAHO, DEPT CIVIL ENGN, MOSCOW, ID 83712 USA. USDA ARS, NW WATERSHED RES CTR, BOISE, ID 83712 USA. UNIV IDAHO, DEPT CIVIL ENGN, MOSCOW, ID 83712 USA. RP WILCOX, BP (reprint author), LOS ALAMOS NATL LAB, EES-15, MS J495, LOS ALAMOS, NM 87545 USA. NR 26 TC 10 Z9 11 U1 0 U2 1 PU SOC RANGE MANAGEMENT PI LAKEWOOD PA 445 UNION BLVD, STE 230, LAKEWOOD, CO 80228-1259 USA SN 0022-409X J9 J RANGE MANAGE JI J. Range Manage. PD SEP PY 1992 VL 45 IS 5 BP 470 EP 474 DI 10.2307/4002904 PG 5 WC Agriculture, Dairy & Animal Science; Ecology SC Agriculture; Environmental Sciences & Ecology GA JN413 UT WOS:A1992JN41300009 ER PT J AU POGANY, GC BALHORN, R AF POGANY, GC BALHORN, R TI QUANTITATIVE FLUOROMETRY OF ABNORMAL-MOUSE SPERM NUCLEI SO JOURNAL OF REPRODUCTION AND FERTILITY LA English DT Article DE QUANTITATIVE FLUOROMETRY; SPERM NUCLEI; MOUSE ID MAMMALIAN SPERM; EJACULATED SPERMATOZOA; D-BINDING; CHROMATIN; DNA; MORPHOLOGY; PROTAMINES; MATURATION; IDENTIFICATION; SPERMIOGENESIS AB An extensive quantitative analysis of deformed mouse spermatozoa was undertaken. Improvements over previous-studies included the isolation and purification of sperm nuclei, a multifaceted analytical approach using several fluorochromes and the analysis of individual nuclei classified into shape categories. Malformed sperm nuclei in BALB/c mice could not be distinguished from normal ones in terms of total and basic proteins, sulfhydryl and disulfide group concentration, DNA concentration and chromatin organization. The shape of sperm nuclei is therefore probably determined by the manner in which the internal biochemical components are assembled. C1 LAWRENCE LIVERMORE NATL LAB,DIV BIOMED,LIVERMORE,CA 94550. NR 53 TC 13 Z9 13 U1 0 U2 1 PU J REPROD FERTIL INC PI CAMBRIDGE PA 22 NEWMARKET RD, CAMBRIDGE, ENGLAND CB5 8DT SN 0022-4251 J9 J REPROD FERTIL JI J. Reprod. Fertil. PD SEP PY 1992 VL 96 IS 1 BP 25 EP 34 PG 10 WC Reproductive Biology SC Reproductive Biology GA JT472 UT WOS:A1992JT47200003 PM 1432956 ER PT J AU KUBATMARTIN, KA KWEI, GH LAWSON, AC PETERSON, DE AF KUBATMARTIN, KA KWEI, GH LAWSON, AC PETERSON, DE TI COMBINED X-RAY AND NEUTRON POWDER DIFFRACTION STUDY OF THE STRUCTURE OF BA4CACU3OX - OXYGEN STOICHIOMETRY AND CATION ORDER SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID HOLE CONCENTRATION; SYSTEM; SUPERCONDUCTIVITY; BA C1 LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,CTR EXPLORATORY RES & DEV,LOS ALAMOS,NM 87545. RP KUBATMARTIN, KA (reprint author), LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. NR 17 TC 7 Z9 7 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD SEP PY 1992 VL 100 IS 1 BP 130 EP 135 DI 10.1016/0022-4596(92)90162-O PG 6 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA JL371 UT WOS:A1992JL37100014 ER PT J AU TUMMINIA, SJ HELLMANN, W WALL, JS BOUBLIK, M AF TUMMINIA, SJ HELLMANN, W WALL, JS BOUBLIK, M TI IMAGE-ANALYSIS OF ARTEMIA-SALINA RIBOSOMES BY SCANNING-TRANSMISSION ELECTRON-MICROSCOPY SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article ID ESCHERICHIA-COLI; 3-DIMENSIONAL RECONSTRUCTION; STRUCTURAL-ANALYSIS; RNA; SUBUNITS; HETEROGENEITY; MICROGRAPHS; ICE C1 ROCHE INST MOLEC BIOL,ROCHE RES CTR,NUTLEY,NJ 07110. BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. FU NCRR NIH HHS [RR01777] NR 29 TC 1 Z9 1 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD SEP-OCT PY 1992 VL 109 IS 2 BP 109 EP 115 DI 10.1016/1047-8477(92)90042-9 PG 7 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA JW739 UT WOS:A1992JW73900003 PM 1288613 ER PT J AU PERKINS, GA LIU, E BURKARD, F BERRY, EA GLAESER, RM AF PERKINS, GA LIU, E BURKARD, F BERRY, EA GLAESER, RM TI CHARACTERIZATION OF THE CONFORMATIONAL CHANGE IN THE M(1) AND M(2) SUBSTATES OF BACTERIORHODOPSIN BY THE COMBINED USE OF VISIBLE AND INFRARED-SPECTROSCOPY SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article ID X-RAY-DIFFRACTION; PURPLE MEMBRANE; SCHIFF-BASE; DIFFERENCE SPECTROSCOPY; PROTONATION CHANGES; N-INTERMEDIATE; VIBRATIONAL SPECTROSCOPY; CHROMOPHORE STRUCTURE; M412 INTERMEDIATE; ALL-TRANS C1 UNIV CALIF BERKELEY,DEPT MOLEC & CELL BIOL,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV CELL & MOLEC BIOL,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DIV BIOCHEM & MOLEC BIOL,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DIV NEUROBIOL,BERKELEY,CA 94720. RP PERKINS, GA (reprint author), LAWRENCE BERKELEY LAB,GRAD GRP BIOPHYS,BERKELEY,CA 94720, USA. FU NIGMS NIH HHS [GM36884] NR 44 TC 24 Z9 24 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD SEP-OCT PY 1992 VL 109 IS 2 BP 142 EP 151 DI 10.1016/1047-8477(92)90045-C PG 10 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA JW739 UT WOS:A1992JW73900006 PM 1288615 ER PT J AU DOWNING, KH JONTES, J AF DOWNING, KH JONTES, J TI PROJECTION MAP OF TUBULIN IN ZINC-INDUCED SHEETS AT 4-ANGSTROM RESOLUTION SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article ID MICROTUBULE-ASSOCIATED PROTEINS; ELECTRON-MICROGRAPHS; 3-DIMENSIONAL RECONSTRUCTION; BRAIN TUBULIN; MICROSCOPY; REMOVAL; IMAGE RP DOWNING, KH (reprint author), LAWRENCE BERKELEY LAB,DIV LIFE SCI,DONNER LAB,BERKELEY,CA 94720, USA. FU NCRR NIH HHS [RR05918]; NIGMS NIH HHS [GM36884] NR 25 TC 27 Z9 27 U1 2 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD SEP-OCT PY 1992 VL 109 IS 2 BP 152 EP 159 DI 10.1016/1047-8477(92)90046-D PG 8 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA JW739 UT WOS:A1992JW73900007 PM 1288616 ER PT J AU WU, RS LEE, LL COCHRAN, HD AF WU, RS LEE, LL COCHRAN, HD TI SOLVENT STRUCTURAL-CHANGES IN REPULSIVE AND ATTRACTIVE SUPERCRITICAL MIXTURES - A MOLECULAR-DISTRIBUTION STUDY SO JOURNAL OF SUPERCRITICAL FLUIDS LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL SYMP ON SUPERCRITICAL FLUIDS CY MAY 20-22, 1991 CL BOSTON, MA DE SUPERCRITICAL FLUID; RADIAL DISTRIBUTION FUNCTIONS; PARTIAL MOLAR VOLUME; REPULSIVE SOLUTES; INTEGRAL EQUATION THEORY ID FLUID MIXTURES; CARBON-DIOXIDE; MOLAR VOLUMES; AQUEOUS ARGON; CHOLESTEROL; ASYMMETRY; OXIDATION; ETHYLENE; BEHAVIOR; XENON AB By examination of the molecular distribution functions, we are able to determine the long-range solvent structures that lead to ''repulsive'' or ''attractive'' supercritical-fluid behavior. Integral equation theories are used to obtain these distribution functions. Depletion of solvent molecules about the solute molecule over 20 molecular diameters is responsible for the positive growth of the partial molar volumes in repulsive mixtures; just as enrichment of solvent molecules over long ranges causes the collapse of the partial molar volumes in attractive mixtures. In fact, there is a competition between the ''compressibility'' of the solvent near the critical point and the ''affinity'' of the solvent toward the solute species. The macroscopic properties derive their major contribution from these long-range solvent-solute correlations, although there is evidence of local rarefaction or densification of solvent molecules in the first solvation shell. C1 OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831. RP WU, RS (reprint author), UNIV OKLAHOMA,SCH CHEM ENGN & MAT SCI,NORMAN,OK 73019, USA. NR 24 TC 17 Z9 17 U1 0 U2 0 PU PRA PRESS PI CINCINNATI PA POLYMER RES ASSOC INC 9200 MONTGOMERY RD, SUITE 23B, CINCINNATI, OH 45242 SN 0896-8446 J9 J SUPERCRIT FLUID JI J. Supercrit. Fluids PD SEP PY 1992 VL 5 IS 3 BP 192 EP 198 DI 10.1016/0896-8446(92)90007-7 PG 7 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA KF202 UT WOS:A1992KF20200007 ER PT J AU SHERA, CA ZWEIG, G AF SHERA, CA ZWEIG, G TI MIDDLE-EAR PHENOMENOLOGY - THE VIEW FROM THE 3 WINDOWS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID TYMPANIC MEMBRANE VIBRATIONS; CAT; IMPEDANCE; MECHANICS; COCHLEA; MODEL AB To provide a common ground for the comparison between theory and experiment, this paper presents a framework for the phenomenological description of middle-ear mechanics. The framework defines those measurements sufficient to characterize the transduction properties of the middle ear and its components. Phenomenological equations are represented in the form of an equivalent electrical circuit that can be used to deduce testable relations among measurable quantities. Two applications are then discussed. First, the classical concept of the middle-ear transformer ratio is generalized to include any effects of eardrum flexion or nonrotational ossicular motion. Middle-ear models predict that the resulting transformer ratios vary considerably with frequency. Second, the conditions under which the topology of existing circuit analogs satisfactorily approximates middle-ear mechanics are given. Most middle-ear models cannot be used to correctly predict the absolute pressures in the cochlea. C1 CALTECH,DEPT PHYS,PASADENA,CA 91125. RP SHERA, CA (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 53 TC 33 Z9 34 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD SEP PY 1992 VL 92 IS 3 BP 1356 EP 1370 DI 10.1121/1.403929 PG 15 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA JM605 UT WOS:A1992JM60500014 PM 1401522 ER PT J AU SHERA, CA ZWEIG, G AF SHERA, CA ZWEIG, G TI ANALYZING REVERSE MIDDLE-EAR TRANSMISSION - NONINVASIVE GEDANKEN EXPERIMENTS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID AUDITORY-NERVE; MODEL; IMPEDANCE; COCHLEA; CAT AB The phenomenological framework outlined in the companion paper [C. A. Shera and G. Zweig, J. Acoust. Soc. Am. 92, 1356-1370 (1992)] characterizes both forward and reverse transmission through the middle ear. This paper illustrates its use in the analysis of noninvasive measurements of middle-ear and cochlear mechanics. A cochlear scattering framework is developed for the analysis of combination-tone and other experiments in which acoustic distortion products are used to drive the middle ear "in reverse." The framework is illustrated with a simple psychophysical Gedankenexperiment analogous to the neurophysiological experiments of P. F. Fahey and J. B. Allen [J. Acoust. Soc. Am. 77, 599-612 (1985)]. C1 CALTECH,DEPT PHYS,PASADENA,CA 91125. RP SHERA, CA (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 32 TC 24 Z9 24 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD SEP PY 1992 VL 92 IS 3 BP 1371 EP 1381 DI 10.1121/1.403930 PG 11 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA JM605 UT WOS:A1992JM60500015 PM 1401523 ER PT J AU SHERA, CA ZWEIG, G AF SHERA, CA ZWEIG, G TI AN EMPIRICAL BOUND ON THE COMPRESSIBILITY OF THE COCHLEA SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article AB Effects of a possible inner-ear compressibility on middle-ear transfer functions are explored and a small upper bound on the magnitude of that compressibility established. Consequently, the traditional two-port representation of middle-ear mechanics remains valid to within a few percent. If the compressibility of the cochlea is small but finite, a simple phenomenological model of that compressibility correctly predicts hearing thresholds in the "middleless" ear at low frequencies. Experiments to establish the value of cochlear compressibility and to explore further its possible contributions to residual hearing in patients with missing or disarticulated middle-ear ossicles are suggested. C1 CALTECH,DEPT PHYS,PASADENA,CA 91125. RP SHERA, CA (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 16 TC 19 Z9 19 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD SEP PY 1992 VL 92 IS 3 BP 1382 EP 1388 DI 10.1121/1.403931 PG 7 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA JM605 UT WOS:A1992JM60500016 PM 1401524 ER PT J AU SWIFT, GW AF SWIFT, GW TI ANALYSIS AND PERFORMANCE OF A LARGE THERMOACOUSTIC ENGINE SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID DRIVEN ACOUSTIC-OSCILLATIONS; PIPE-FLOW; TRANSITION; TURBULENCE AB Measurements and analysis of a 13-cm-diam thermoacoustic engine are presented. At its most powerful operating point, using 13.8-bar helium, the engine delivered 630 W to an external acoustic load, converting heat to delivered acoustic power with an efficiency of 9%. At low acoustic amplitudes, where (linear) thermoacoustic theory is expected to apply, measurements of temperature difference and frequency agree with the predictions of theory to within 4%, over conditions spanning factors of 4 in mean pressure, 10 in pressure amplitude, 6 in frequency, and 3 in gas sound speeds. But measurements of the square of pressure amplitude versus heater power differ from the predictions of theory by 20%, twice the estimated uncertainty in the results. At higher pressure amplitudes (up to 16% of the mean pressure), even more significant deviation from existing thermoacoustic theory is observed. Several causes of this amplitude-dependent deviation are identified, including resonance-enhanced harmonic content in the acoustic wave, and a new, first-order temperature defect in thermoacoustic heat exchangers. These causes explain some, but not all, of the amplitude-dependent deviation of the high-amplitude measurements from existing (linear) theory. RP SWIFT, GW (reprint author), LOS ALAMOS NATL LAB,CONDENSED MATTER & THERMAL PHYS GRP,LOS ALAMOS,NM 87545, USA. NR 27 TC 143 Z9 159 U1 3 U2 21 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD SEP PY 1992 VL 92 IS 3 BP 1551 EP 1563 DI 10.1121/1.403896 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA JM605 UT WOS:A1992JM60500034 ER PT J AU JANTZEN, CM AF JANTZEN, CM TI NUCLEAR WASTE GLASS DURABILITY .1. PREDICTING ENVIRONMENTAL RESPONSE FROM THERMODYNAMIC (POURBAIX) DIAGRAMS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID COMPLEX FEED COMPOSITIONS; ELECTRIC MELTERS; PH-DEPENDENCE; REDOX CONTROL; CORROSION; SILICATES; SURFACES; MODELS AB Pourbaix diagrams are shown to conceptually explain dissolution of glasses in terms of their thermodynamic stability and surface layer formation. To predict the long-term effects of ground-water contact on the durability of nuclear waste glass in a geologic repository, the nature of the glass dissolution process has been extensively examined. Hydration thermodynamics has been used to quantify the role of glass composition and the effect of solution pH. The glass compositions examined vary widely in composition and include natural, lunar, medieval, and nuclear waste glasses, as well as some glass-ceramics. The known effects of solution pH and oxidation potential (Eh) on glass dissolution are empirically described by thermodynamically calculated Pourbaix diagrams. Statistical analysis of over 300 glass durability tests demonstrates that the Pourbaix diagram can be quantified because of (1) the colinearity of the hydration free energy with solution pH defined by the Nernst equation and (2) the colinearity of the solution pH with the concentration of dissolved silicon and boron in the solution defined by the pH dependence of the ion activities. Construction of Pourbaix diagrams to describe glass dissolution series to unify and categorize various existing experimental glass dissolution data. RP JANTZEN, CM (reprint author), WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER TECHNOL CTR,AIKEN,SC 29808, USA. NR 57 TC 5 Z9 5 U1 0 U2 6 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 1992 VL 75 IS 9 BP 2435 EP 2448 PG 14 WC Materials Science, Ceramics SC Materials Science GA JL826 UT WOS:A1992JL82600016 ER PT J AU FERBER, MK JENKINS, MG AF FERBER, MK JENKINS, MG TI EVALUATION OF THE STRENGTH AND CREEP FATIGUE BEHAVIOR OF HOT ISOSTATICALLY PRESSED SILICON-NITRIDE SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID CERAMICS; SI3N4; TENSILE; RUPTURE AB The strength of a commercially available hot isostatically pressed silicon nitride was measured as a function of temperature. To evaluate long-term mechanical reliability of this material, the tensile creep and fatigue behavior was measured at 1150-degrees, 1260-degrees, and 1370-degrees-C. The stress and temperature sensitivities of the secondary (or minimum) creep strain rate were used to estimate the stress exponent and activation energy associated with the dominant creep mechanism. The fatigue characteristics were evaluated bv allowing individual creep tests to continue until specimen failure. The applicability of the four-point load geometry to the study of strength and creep behavior was also determined by conducting a limited number of flexural creep tests. The tensile fatigue data revealed two distinct failure mechanisms. At 1150-degrees-C, failure was controlled by a slow crack growth mechanism. At 1260-degrees and 1370-degrees-C, the accumulation of creep damage in the form of grain boundary cavities and cracks dominated the fatigue behavior. In this temperature regime, the fatigue life was controlled by the secondary (or minimum) creep strain rate in accordance with the Monkman-Grant relation. RP FERBER, MK (reprint author), OAK RIDGE NATL LAB,HIGH TEMP MAT LAB,OAK RIDGE,TN 37831, USA. NR 40 TC 96 Z9 97 U1 1 U2 6 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 1992 VL 75 IS 9 BP 2453 EP 2462 DI 10.1111/j.1151-2916.1992.tb05598.x PG 10 WC Materials Science, Ceramics SC Materials Science GA JL826 UT WOS:A1992JL82600018 ER PT J AU AHMED, FE AF AHMED, FE TI EFFECT OF NUTRITION ON THE HEALTH OF THE ELDERLY SO JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION LA English DT Article ID IMMUNE-RESPONSE; UNITED-STATES; IRON STATUS; ZINC; VITAMIN; POPULATION; PEOPLE; COPPER; REQUIREMENTS; BALANCE AB Nutrition may play a role in the progressive decline of several body functions with aging. Progressive decline in energy, lean body mass, and protein intake are also associated with aging. Many elderly (> 55 years old) drink less than the recommended amounts of water and consume less than the Recommended Dietary Allowances of calcium, iron, zinc, copper, thiamin, riboflavin, folate, and vitamins B-12 and D. Nutrition needs of the elderly to maintain activities of daily living are expected to increase in future years. Because diminished physical activity and old age disabilities cause the elderly to modify eating habits acquired at a younger age, dietary and other life-style changes should be implemented early in life so that optimal tissue function will be maintained. More research and development is needed in the areas of nutrient requirements for the elderly, effect of nutrition on chronic diseases, improved methods for assessing nutritional status and screening the elderly for nutritional risk, nutrient-nutrient and nutrient-drug interactions, and educational strategies to provide better nutrition and eliminate health fraud. Dietary interventions show promise, but must be monitored for effectiveness. C1 NATL ACAD SCI, INST MED, FOOD & NUTR BOARD, WASHINGTON, DC 20418 USA. RP BROOKHAVEN NATL LAB, DEPT BIOL, UPTON, NY 11973 USA. NR 76 TC 23 Z9 23 U1 0 U2 7 PU AMER DIETETIC ASSOC PI CHICAGO PA 120 S RIVERSIDE PLZ, STE 2000, CHICAGO, IL 60606-6995 USA SN 0002-8223 J9 J AM DIET ASSOC JI J. Am. Diet. Assoc. PD SEP PY 1992 VL 92 IS 9 BP 1102 EP 1108 PG 7 WC Nutrition & Dietetics SC Nutrition & Dietetics GA JM991 UT WOS:A1992JM99100012 PM 1512369 ER PT J AU MCLUCKEY, SA AF MCLUCKEY, SA TI PRINCIPLES OF COLLISIONAL ACTIVATION IN ANALYTICAL MASS-SPECTROMETRY SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Review ID INTERNAL ENERGY-DISTRIBUTIONS; SURFACE-INDUCED DISSOCIATION; INITIAL KINETIC-ENERGY; ACETONE MOLECULAR ION; TARGET GAS EXCITATION; POLYATOMIC IONS; INDUCED DECOMPOSITION; TRANSLATIONAL ENERGY; TRIPLE QUADRUPOLE; FRAGMENT IONS AB Collisional activation has played an essential role in the development of mass, spectrometry/mass spectrometry (MS/MS). It was the first activation method to be employed and continues to be by far the most widely used. As instrumentation for MS/MS has evolved it has been found that collisional activation can be effected under a remarkably wide range of conditions for a wide range of ions. It is fair to conclude from the growth of MS/MS over the past fifteen years that collisional activation has been spectacularly successful. However, it has limitations. As a community, we have learned much over the years regarding these limitations both from empirical and fundamental points of view. This overview provides background on the development of collisional activation and discusses the importance of the interaction potential and timing on mechanisms for energy transfer. Parts of the discussion is devoted to changing reference frames from the laboratory to the center of mass to simplify visualizing what is possible and what is probable in collisional activation. RP OAK RIDGE NATL LAB, DIV ANALYT CHEM, OAK RIDGE, TN 37831 USA. RI McLuckey, Scott/B-2203-2009 OI McLuckey, Scott/0000-0002-1648-5570 NR 127 TC 268 Z9 271 U1 11 U2 61 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1044-0305 EI 1879-1123 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD SEP PY 1992 VL 3 IS 6 BP 599 EP 614 DI 10.1016/1044-0305(92)85001-Z PG 16 WC Biochemical Research Methods; Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Biochemistry & Molecular Biology; Chemistry; Spectroscopy GA JL242 UT WOS:A1992JL24200001 PM 24234564 ER PT J AU WINGER, BE LIGHTWAHL, KJ SMITH, RD AF WINGER, BE LIGHTWAHL, KJ SMITH, RD TI GAS-PHASE PROTON-TRANSFER REACTIONS INVOLVING MULTIPLY CHARGED CYTOCHROME-C IONS AND WATER UNDER THERMAL CONDITIONS SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Article ID IONIZATION-MASS-SPECTROMETRY; ELECTROSPRAY IONIZATION; MOLECULE REACTIONS; DISSOCIATION; EVAPORATION; AFFINITIES; BASICITIES; INTERFACE; PROTEINS AB Investigations of gas-phase proton transfer reactions have been performed on protein molecular ions generated by electrospray ionization (ESI). Their reactions were studied in a heated capillary inlet/reactor prior to expansion into a quadrupole mass spectrometer. Results from investigations involving protonated horse heart cytochrome c and H2O suggest that Coulombic effects can lower reaction barriers as well as aid in entropically driven reactions. For example, the charge state distribution observed by a quadrupole mass spectrometer for multiply protonated cytochrome c without the addition of any reactive gas ranges from 9 + to 19 +, with the [M + 15H]15+ ion being the most intense peak. With the addition of H2O (proton affinity approximately 170.3 +/- 2 kcal/mol) to the capillary reactor at 120-degrees-C, the charge state distribution shifts to a lower charge, ranging from 13 + to less than 9 + . Under the same conditions with argon (proton affinity approximately 100 kcal/mol) as the reactive gas, no shift in the charge state distribution is observed. The results demonstrate that proton transfer to water can occur for highly protonated molecular ions, a process that would be expected to be highly endothermic for singly protonated molecules (for which Coulombic destabilization is not significant). The results imply that the charge state distribution from ESI is somewhat dependent upon the mechanism and speed of the droplet evaporation/ion desolvation process, which may vary substantially with the ESI/mass spectrometry interface design. C1 PACIFIC NW LAB, DEPT CHEM SCI, CHEM METHODS & SEPARAT GRP, P8-19, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 32 TC 83 Z9 83 U1 0 U2 5 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1044-0305 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD SEP PY 1992 VL 3 IS 6 BP 624 EP 630 DI 10.1016/1044-0305(92)85003-3 PG 7 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA JL242 UT WOS:A1992JL24200003 PM 24234566 ER PT J AU HART, KJ MCLUCKEY, SA GLISH, GL AF HART, KJ MCLUCKEY, SA GLISH, GL TI EVIDENCE OF ISOMERIZATION DURING ION ISOLATION IN THE QUADRUPOLE ION TRAP SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Note ID TOLYL; ISOMERS AB Evidence of ion isomerization during isolation in an ion trap mass spectrometer is presented An ion-molecule reaction that is specific for the tolyl cation was used to monitor the relative abundance of this species. In particular, it has been observed that ion isolation m the ion trap can impart sufficient energy to the tolyl cation to cause it to isomerize to a form (presumably either the benzyl or the tropylium ion) that is not reactive with the neutral reagent. These results are important to consider in ion trap applications involving ion species having activation barriers for isomerization lower than the activation barriers for dissociation. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. RI McLuckey, Scott/B-2203-2009 OI McLuckey, Scott/0000-0002-1648-5570 NR 13 TC 11 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1044-0305 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD SEP PY 1992 VL 3 IS 6 BP 680 EP 682 DI 10.1016/1044-0305(92)85010-H PG 3 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA JL242 UT WOS:A1992JL24200010 PM 24234573 ER PT J AU HALBROOK, RS SHUGART, LR WATSON, AP MUNRO, NB LINNABARY, RD AF HALBROOK, RS SHUGART, LR WATSON, AP MUNRO, NB LINNABARY, RD TI CHARACTERIZING BIOLOGICAL VARIABILITY IN LIVESTOCK BLOOD CHOLINESTERASE ACTIVITY FOR BIOMONITORING ORGANOPHOSPHATE NERVE AGENT EXPOSURE SO JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION LA English DT Article DE BOVINE SPECIES; EQUINE SPECIES; OVINE SPECIES; CHOLINESTERASE TOXICOSIS; ORGANOPHOSPHATES ID WHOLE-BLOOD; ANIMALS AB A biomonitoring protocol, using blood cholinesterase (ChE) activity in livestock as a monitor of potential organophosphate nerve agent exposure during the planned destruction of US unitary chemical warfare agent stockpiles, is described. The experimental design included analysis of blood ChE activity in individual healthy sheep, horses, and dairy and beef cattle during a 10- to 12-month period. Castrated and sexually intact males, pregnant and lactating females, and adult and immature animals were examined through at least one reproductive cycle. The same animals were used throughout the period of observation and were not exposed to ChE-inhibiting organophosphate or carbamate compounds. A framework for an effective biomonitoring protocol within a monitoring area includes establishing individual baseline blood ChE activity for a sentinel group of 6 animals on the bases of blood samples collected over a 6-month period, monthly collection of blood samples for ChE-activity determination during monitoring, and selection of adult animals as sentinels. Exposure to ChE-inhibiting compounds would be suspected when all blood ChE activity of all animals within the sentinel group are decreased > 20% from their own baseline value. Sentinel species selection is primarily a logistical and operational concern; however, sheep appear to be the species of choice because within-individual baseline ChE activity and among age and gender group ChE activity in sheep had the least variability, compared with data from other species. This protocol provides an effective and efficient means for detecting abnormal depressions in blood ChE activity in livestock and can serve as a valuable indicator of the extent of actual plume movement and/or deposition in the event of organophosphate nerve agent release. C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. UNIV TENNESSEE,COLL VET MED,DEPT RURAL PRACTICE,KNOXVILLE,TN 37901. RP HALBROOK, RS (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 14 TC 24 Z9 25 U1 1 U2 3 PU AMER VETERINARY MEDICAL ASSOC PI SCHAUMBURG PA 1931 N MEACHAM RD SUITE 100, SCHAUMBURG, IL 60173-4360 SN 0003-1488 J9 J AM VET MED ASSOC JI J. Am. Vet. Med. Assoc. PD SEP 1 PY 1992 VL 201 IS 5 BP 714 EP 725 PG 12 WC Veterinary Sciences SC Veterinary Sciences GA JK798 UT WOS:A1992JK79800018 PM 1399773 ER PT J AU GOPALAN, AS HUBER, VJ ZINCIRCIOGLU, O SMITH, PH AF GOPALAN, AS HUBER, VJ ZINCIRCIOGLU, O SMITH, PH TI NOVEL TETRAHYDROXAMATE CHELATORS FOR ACTINIDE COMPLEXATION - SYNTHESIS AND BINDING-STUDIES SO JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS LA English DT Article ID ION SEQUESTERING AGENTS; POTENTIOMETRIC EVALUATION; LIGANDS; PLUTONIUM; ANALOGS; SIDEROPHORES; HYDROXAMATE; CHEMISTRY; AMERICIUM AB The chelators 1 and 2, members of a new class of tetrahydroxamate chelators, are readily synthesized and are shown by potentiometric studies to have high affinities for thorium(IV), iron(III) and neodymium(III). C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP GOPALAN, AS (reprint author), NEW MEXICO STATE UNIV,DEPT CHEM,LAS CRUCES,NM 88003, USA. NR 23 TC 9 Z9 9 U1 0 U2 1 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0022-4936 J9 J CHEM SOC CHEM COMM JI J. Chem. Soc.-Chem. Commun. PD SEP 1 PY 1992 IS 17 BP 1266 EP 1268 DI 10.1039/c39920001266 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA JM087 UT WOS:A1992JM08700060 ER PT J AU SAFFARIAN, H ROSS, P BEHR, F GARD, G AF SAFFARIAN, H ROSS, P BEHR, F GARD, G TI ELECTROCHEMICAL PROPERTIES OF PERFLUOROALKANE DISULFONIC [HSO3(CF2)NSO3H] ACIDS RELEVANT TO FUEL-CELL TECHNOLOGY SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID OXYGEN REDUCTION; TETRAFLUOROETHANE-1,2-DISULFONIC ACID; PHOSPHORIC-ACID; ELECTROLYTE; PLATINUM; ADSORPTION; KINETICS AB The electrochemical properties of a homologous series of perfluoroalkane-alpha, omega-disulfonic acids were measured. These acids are high molecular weight analogs of trifluoromethane sulfonic acid, having the general molecular formula [HSO3(CF2)nSO3H]. Properties measured included the solubility and conductivity of aqueous solutions, the extent of anion specific adsorption on platinum, and oxygen reduction kinetics on platinum, for acids having n = 2, 4, and 6. The following trends in properties with variation in n were observed: solubility in water and the conductivity of aqueous solutions decreased dramatically with increasing n; an increase in the extent of anion specific adsorption with increasing n; at constant pH, rate of oxygen reduction on Pt decreased-with increasing n; for a given acid (value of n), the rate of oxygen reduction decreased exponentially with increasing acid concentration. These trends in physical properties can be explained in a straightforward manner if it is assumed that there is successively weaker hydration of the anions with increasing n, i.e., size of the anion. Of the acids in this homologous series, the n = 2 acid appears to have the best combination of properties for a fuel cell electrolyte. C1 THREE M CO,THREE M CTR,DIV IND CHEM PROD,ST PAUL,MN 55144. PORTLAND STATE UNIV,DEPT CHEM,PORTLAND,OR 97207. RP SAFFARIAN, H (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 29 TC 23 Z9 23 U1 2 U2 4 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD SEP PY 1992 VL 139 IS 9 BP 2391 EP 2397 DI 10.1149/1.2221237 PG 7 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA JL825 UT WOS:A1992JL82500014 ER PT J AU MCARTHUR, JV LEFF, LG SMITH, MH AF MCARTHUR, JV LEFF, LG SMITH, MH TI GENETIC DIVERSITY OF BACTERIA ALONG A STREAM CONTINUUM SO JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY LA English DT Article DE GENETIC DIVERSITY; BACTERIA; ADAPTATION; PSEUDOMONAS-CEPACIA; PSEUDOMONAS-PICKETTII; AQUATIC; TERRESTRIAL; STARCH GEL ELECTROPHORESIS AB Adaptation is a fundamental concept in ecology and evolution. Determining whether organisms are adapted requires genetic analysis of the organism. We characterized the genetic structure of isolates of two species of aquatic bacteria (Pseudomons cepacia and P. pickettii) using starch gel electrophoresis to determine the relationship between genetic diversity and stream location. Genetic diversity in these species of bacteria did not change longitudinally. However, each location in the stream had genetically unique bacteria. Genetic distance among isolates was found to be related to geographical distance, i.e., isolates farther apart in the stream were more genetically dissimilar. The results suggest localized adaptation. Soil forms of P. cepacia collected from the same catchment were very different genetically from the aquatic forms of the same species. Analyzing patterns of allozymes may be of value in determining the source of bacteria in aquatic ecosystems. RP MCARTHUR, JV (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29802, USA. NR 0 TC 30 Z9 30 U1 0 U2 1 PU NORTH AMER BENTHOLOGICAL SOC PI LAWRENCE PA 1041 NEW HAMSPHIRE STREET, LAWRENCE, KS 66044 SN 0887-3593 J9 J N AM BENTHOL SOC JI J. N. Am. Benthol. Soc. PD SEP PY 1992 VL 11 IS 3 BP 269 EP 277 DI 10.2307/1467647 PG 9 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA JP409 UT WOS:A1992JP40900002 ER PT J AU SMITH, AV AF SMITH, AV TI NUMERICAL-STUDIES OF ADIABATIC POPULATION-INVERSION IN MULTILEVEL SYSTEMS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID WAVELENGTH OPTICAL PULSES; STIMULATED RAMAN-SCATTERING; LOSSLESS PROPAGATION; VIBRATIONAL LEVELS; RAPID-PASSAGE; RESONANCE; SPECTRA; DRIVEN; BEAMS AB A numerical analysis is presented of several potential pulsed-laser applications of adiabatic population inversion in atoms or molecules. A simple numerical method is demonstrated for evaluating adiabatic processes in multilevel systems for both swept-frequency and resonant, time-delayed pulses. Adiabatic inversion with time-delayed pulses is generalized to systems with any number of levels. The effect of Doppler broadening on time-delayed adiabatic pumping of a three-level system is investigated. RP SMITH, AV (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 24 TC 55 Z9 55 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD SEP PY 1992 VL 9 IS 9 BP 1543 EP 1551 DI 10.1364/JOSAB.9.001543 PG 9 WC Optics SC Optics GA JM574 UT WOS:A1992JM57400002 ER PT J AU BROWN, GM THUNDAT, T ALLISON, DP WARMACK, RJ AF BROWN, GM THUNDAT, T ALLISON, DP WARMACK, RJ TI ELECTROCHEMICAL AND INSITU ATOMIC FORCE MICROSCOPY AND SCANNING TUNNELING MICROSCOPY INVESTIGATIONS OF TITANIUM IN OXALIC-ACID SOLUTION SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID POTENTIAL CONTROL; STM OBSERVATIONS; ELECTRODES; CORROSION; AU(111) AB The growth of an oxide film and the dissolution of the metal were studied by atomic force microscopy (AFM) and scanning tunneling microscopy (STM) for titanium electrodes which had been pretreated by a chemical polishing procedure. Images were obtained with a gas-solid interface and under an aqueous solution containing 0.1 M oxalic acid. The electrochemical polarization of titanium in 0.1 M oxalic acid is qualitatively the same as observed in chloride or sulfate medium, and the dissolution reaction in oxalic acid appears to follow the same monolayer coverage mechanism as in the other media. The titanium specimen is polycrystalline and the presence of grain boundaries between individual crystallites is observed by AFM. In situ microscopy indicates that both the rate of growth of oxide and the dissolution of the metal are dependent on the crystallographic face of the titanium. AFM and STM show that the growth of titanium (IV) oxide or hydrous oxide has the appearance of hemispherical domes which grow together to form peaks on the surface. Dissolution of the metal in the active region occurs first in areas between the peaks where the oxide is thin, and later the oxide coverage of the small peaks appears to coalesce to a smaller number of large peaks. C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. RP BROWN, GM (reprint author), OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831, USA. NR 11 TC 19 Z9 19 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3001 EP 3006 DI 10.1116/1.577856 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500007 ER PT J AU BAER, DR WINDISCH, CF SORAN, TF JONES, RH ENGELHARD, MH AF BAER, DR WINDISCH, CF SORAN, TF JONES, RH ENGELHARD, MH TI INFLUENCE OF ADSORBED AND IMPLANTED SULFUR ON THE CORROSION OF IRON IN CALCIUM NITRATE AT 60-DEGREES-C SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID NICKEL AB The influence of S on the anodic corrosion of Fe in a 55 wt % Ca(NO3)2 solution at 60-degrees-C has been examined using both electrochemical and surface analysis methods. Pure Fe, S-implanted Fe, and Fe with S adsorbed on the surface have been studied. The presence of S, in sufficient amounts, was found to accelerate the corrosion of Fe at 750 mV. For S layers adsorbed on the Fe surface this threshold amount was approximately 1 monolayer. The effect of S was to thicken the oxide layer that formed on the metal and the S remained within the film in a nonoxidized form. These results are consistent with an observed rapid stress corrosion crack growth in the nitrate solution for Fe with S at grain boundaries. RP BAER, DR (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. RI Engelhard, Mark/F-1317-2010; Baer, Donald/J-6191-2013 OI Baer, Donald/0000-0003-0875-5961 NR 17 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 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3007 EP 3011 DI 10.1116/1.577857 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500008 ER PT J AU OCKO, BM GIBAUD, A WANG, J AF OCKO, BM GIBAUD, A WANG, J TI SURFACE X-RAY-DIFFRACTION STUDY OF THE AU(111) ELECTRODE IN 0.01-M NACL - ELECTROCHEMICALLY INDUCED SURFACE RECONSTRUCTION SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID CRYSTALLOGRAPHIC ORIENTATION; CRYSTAL-SURFACES; AU(001) SURFACE; GOLD; INSITU; REFLECTIVITY; SCATTERING; DOMAINS; PHASES AB The structure of the Au(111) electrode surface in a 0.01 M NaCl electrolyte has been investigated using grazing incident angle x-ray diffraction. The top layer of gold atoms undergoes a reversible phase transition between the (1 X 1) bulk termination and a (p X square-root 3) uniaxial discommensuration (striped) phase on changing the electrode potential. Below a critical potential the stripe separation, p = 23, is identical to vacuum measurements. At sufficiently positive potentials the surface forms an ideally terminated, (1 X 1), Au(111) surface. Cycling the potential in the reconstructed region improves the reconstructed surface order. RP OCKO, BM (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. RI Wang, Jia/B-6346-2011 NR 33 TC 5 Z9 5 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3019 EP 3031 DI 10.1116/1.577859 PG 13 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500010 ER PT J AU GORBATKIN, SM BERRY, LA AF GORBATKIN, SM BERRY, LA TI CONTAMINATION BY SPUTTERING IN MIRROR FIELD ELECTRON-CYCLOTRON RESONANCE MICROWAVE PLASMA SOURCES SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID ION-SOURCE AB Langmuir probe measurements, visual observation, and Rutherford backscattering spectrometry have been used to investigate source chamber sputtering for electron cyclotron resonance plasma systems operated with Ar, N2, and Cl2. Potentials in the source > 20 eV combined with high plasma densities (greater-than-or-similar-to 10(12) cm-3) led to source chamber sputtering and coating of the microwave entrance window. The microwave entrance window coating caused significant absorption of incident microwave power and decreased source efficiency by as much as 50% within 5 min. Operation of the source with an anodized aluminum liner was effective in reducing microwave entrance window coating but resulted in some heavy metal contamination due to sputtering of impurities in the liner itself. Also, checks with secondary ion mass spectrometry indicated some Al contamination from sputtering of the anodized aluminum liner material. Finally, a technique for in situ cleaning of the microwave entrance window was developed and is described in detail. RP GORBATKIN, SM (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 30 TC 18 Z9 18 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3104 EP 3113 DI 10.1116/1.577872 PG 10 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500023 ER PT J AU FORSTER, J KLEPPER, CC BERRY, LA GORBATKIN, SM AF FORSTER, J KLEPPER, CC BERRY, LA GORBATKIN, SM TI DOPPLER-SHIFT MEASUREMENTS OF ION ENERGY-DISTRIBUTION WIDTHS IN AN ELECTRON-CYCLOTRON RESONANCE MULTIPOLE HYBRID REACTOR SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID PLASMA SOURCE; TEMPERATURE; DISCHARGES; AR AB An optical emission spectroscopy diagnostic was used to measure the Doppler broadening of a Cl+ emission line in a plasma generated in an electron cyclotron resonance/multipole hybrid reactor. The broadening of the emission line was found to be correlated with Langmuir probe measurements of the electron temperature. It is postulated that the Doppler broadening is related to the electron temperature through the plasma potential. Deviations to the correlation occur at high microwave powers, suggesting the existence of another type of ion broadening. C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. RP FORSTER, J (reprint author), IBM CORP,DIV TECHNOL PROD,HOPEWELL JCT,NY 12533, USA. NR 24 TC 12 Z9 12 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3114 EP 3118 DI 10.1116/1.577873 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500024 ER PT J AU MOALEM, M OLANDER, DR BALOOCH, M FLUSS, MJ AF MOALEM, M OLANDER, DR BALOOCH, M FLUSS, MJ TI CLUSTER FORMATION IN THE VAPOR PRODUCED BY LASER PULSING OF THE Y1BA2CU3O7 SUPERCONDUCTING SOLID SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT TOPICAL CONF ON SURFACE SCIENCE AT THE SOLID-LIQUID INTERFACE CY NOV 11-15, 1991 CL SEATTLE, WA ID THIN-FILMS; REFRACTORY MATERIALS; ABLATION; VAPORIZATION; DEPOSITION AB Formation of neutral clusters in the vapor plume generated by laser-pulse heating of YBa2Cu3O7-x in vacuum was investigated. A Nd-glass laser of 1060 nm wavelength and 1.75 ms pulse width was used to generate peak power densities in the range of 10(4)-10(5) W/cm2 over an area of 3-28 mm2. Time-of-flight mass spectrometry was used to identify neutral species contained in the plume and quadrupole mass spectrometry provided the time variation of the signal of several low-mass species. In both cases a transient optical pyrometer was used to monitor the surface temperature of the target during the laser pulse. At power densities generating peak surface temperatures less than 2300 K, the vapor consisted primarily of monomer species O, O2, Cu, Ba, BaO, and the dimer (BaO)2. At higher-power densities the major part of the vapor was made up of clusters of mass up to and beyond 3500 amu. These observations were complemented by microscopic examination of deposited plumes. Thin films of the target material were deposited on silicon and graphite substrates and examined by atomic force microscopy and scanning tunneling microscopy. Clusters 3 nm in diameter were observed in submonolayer films. Films of > approximately 100 nm were made up of stacks of such clusters. Very few liquid droplets from direct ejection from the target surface were observed. In-flight illumination of the plume by light from the laser did not significantly affect the mass distribution in the plumes; however, cluster formation at high-laser-power density (approximately 10(12) W/cm2) was much lower than at 10(5) W/CM2. C1 UNIV CALIF BERKELEY,DEPT NUCL ENGN,BERKELEY,CA 94720. LAWRENCE LIVERMORE NATL LAB,DIV CHEM & MAT SCI,LIVERMORE,CA 94550. RP MOALEM, M (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 17 TC 7 Z9 7 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD SEP-OCT PY 1992 VL 10 IS 5 BP 3292 EP 3299 DI 10.1116/1.577814 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA JN805 UT WOS:A1992JN80500053 ER PT J AU HICKMAN, KC GASPAR, SM BISHOP, KP NAQVI, SSH MCNEIL, JR TIPTON, GD STALLARD, BR DRAPER, BL AF HICKMAN, KC GASPAR, SM BISHOP, KP NAQVI, SSH MCNEIL, JR TIPTON, GD STALLARD, BR DRAPER, BL TI USE OF DIFFRACTED LIGHT FROM LATENT IMAGES TO IMPROVE LITHOGRAPHY CONTROL SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID PHOTORESIST AB As the microelectronics industry strives to achieve smaller device design geometries, control of linewidth, or critical dimension (CD), becomes increasingly important. Currently, CD uniformity is controlled by exposing large numbers of samples for a fixed exposure time which is determined in advance by calibration techniques. This type of control does not accommodate variations in optical properties of the wafers that may occur during manufacturing. In this work, a relationship is demonstrated between the intensity of light diffracted from a latent image consisting of a periodic pattern in the undeveloped photoresist and the amount of energy absorbed by the resist material (the exposure dose). This relationship is used to simulate exposure control of photoresist on surfaces having slight variations in optical properties, representative of those found in operating process lines. We demonstrate that linewidth uniformity of the developed photoresist can be greatly improved when the intensity of diffracted light from the latent image is used to control the exposure dose. Samples include a variety of photoresist materials and substrates with a wide range of optical properties. To verify the experimental observations, diffractions from the latent image grating structures is modeled using rigorous coupled wave analysis. The modeling is used to predict the diffraction from a latent image as a function of the substrate optical properties and the parameters of the latent image (i.e., linewidth, sidewall angle). Good agreement is obtained between theoretical and experimental observations. Conversely, the inverse problem is solved in which the parameters of the diffracting structure (the latent image) are determined from a measurement of the diffracted power. Therefore, the diffracted power can be monitored for the purpose of determining when the latent image will produce the proper CD upon development. C1 SANDIA NATL LABS,DIV 2131,ALBUQUERQUE,NM 87185. RP HICKMAN, KC (reprint author), UNIV NEW MEXICO,DEPT ELECT & COMP ENGN,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131, USA. NR 17 TC 13 Z9 13 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1992 VL 10 IS 5 BP 2259 EP 2266 DI 10.1116/1.586198 PG 8 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA JW294 UT WOS:A1992JW29400020 ER PT J AU FRAZIER, DL BARNHILL, MA VODINH, T LEGENDRE, AM OVERHOLT, BF AF FRAZIER, DL BARNHILL, MA VODINH, T LEGENDRE, AM OVERHOLT, BF TI COMPARATIVE PHARMACOKINETICS OF THE PHOTOSENSITIZER TIN-ETIOPURPURIN IN DOGS AND RATS SO JOURNAL OF VETERINARY PHARMACOLOGY AND THERAPEUTICS LA English DT Article ID TUMORS; HEMATOPORPHYRIN; THERAPY; TISSUE AB Photodynamic therapy is a promising new treatment for local eradication of cancer. Little work has been done to define the pharmacokinetics of photodynamic drugs or the variability in drug disposition that may occur between different species and pathophysiological states of tissues. Pharmacokinetic studies of tin-etiopurpurin (SnET2), a lipophilic photosensitizer, were conducted on six Beagle dogs and six Sprague-Dawley rats. Blood was collected up to 24 h following drug administration for measurement of tin-etiopurpurin concentration. Dogs and rats were euthanatized 24 h post-administration and tissues were collected for drug analyses. The plasma drug concentrations were best described by a 2-comparment model (Ct = Ae(-alpha-t) + Be(-beta-t)). Median distribution and elimination half-lives were 0.24 and 0.34 h and 10.21 and 5.25 h for dogs and rats, respectively. The apparent volumes of distribution were 4.26 +/- 1.75 L/kg for dogs and 1.84 +/- 0.36 L/kg for rats. Systemic clearance was 7.56 +/- 2.45 mt/kg/min and 6.63 +/- 0.91 ml/kg/min for dogs and rats, respectively. Drug was detected in all tissues analyzed 24 h after drug administration. Drug was detected only sporadically in skin and muscle and was generally below the limit of detection of the assay. Where comparisons could be made, concentrations of SnET2 were significantly greater in all tissues except jejunum of rats compared to dogs 24 h after drug administration. C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. THOMPSON CANC SURVIVAL CTR,DEPT LASER HYPERTHERMIA,KNOXVILLE,TN 37916. RP FRAZIER, DL (reprint author), UNIV TENNESSEE,COLL VET MED,DEPT ENVIRONM PRACTICE & URBAN PRACTICE,KNOXVILLE,TN 37901, USA. NR 17 TC 5 Z9 6 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0140-7783 J9 J VET PHARMACOL THER JI J. Vet. Pharmacol. Ther. PD SEP PY 1992 VL 15 IS 3 BP 275 EP 281 DI 10.1111/j.1365-2885.1992.tb01017.x PG 7 WC Pharmacology & Pharmacy; Veterinary Sciences SC Pharmacology & Pharmacy; Veterinary Sciences GA JK814 UT WOS:A1992JK81400008 PM 1433491 ER PT J AU GILL, M ARMES, SP FAIRHURST, D EMMETT, SN IDZOREK, G PIGOTT, T AF GILL, M ARMES, SP FAIRHURST, D EMMETT, SN IDZOREK, G PIGOTT, T TI PARTICLE-SIZE DISTRIBUTIONS OF POLYANILINE SILICA COLLOIDAL COMPOSITES SO LANGMUIR LA English DT Article ID CHEMICAL POLYMERIZATION; POLYPYRROLE COLLOIDS; CONDUCTING POLYMER; DISPERSIONS; FILMS AB We have characterized a new polyaniline-silica composite colloid by various particle sizing techniques. Our transmission electron microscopy studies have confirmed for the first time an unusual "raspberry" morphology, with the small silica particles held together by the polyaniline "binder". These particles have average diameters in the size range 150-500 nm. Charge-velocity analysis experiments indicated a number-average particle diameter of 300 +/- 80 nm, but only poor statistics were obtained (172 particles counted). Photon correlation spectroscopy studies suggested an intensity-average particle diameter of 380 nm. Disk centrifuge photosedimentometry (DCP) turned out to be our preferred sizing technique for the polyaniline-silica colloids, since it was both quick and reliable and, more importantly, produced the true particle size distribution(PSD) curve with excellent statistics. The DCP data indicated a weight-average and number-average particle diameter of 330 +/- 70 nm and 280 +/- 70 nm, respectively, and moreover confirmed the PSD to be both broad and unimodal. Finally, these colloidal composites were sized using the Malvern Aerosizer. Using this instrument in conjunction with a nebulizer attachment (which allowed particle sizing of the "wet" dispersion) rather than in the conventional "dry powder" mode, we obtained particle size data which were in reasonable agreement with the DCP results. C1 UNIV SUSSEX, SCH CHEM & MOLEC SCI, BRIGHTON BN1 9QJ, E SUSSEX, ENGLAND. PARKS COLL, CAHOKIA, IL 62206 USA. BROOKHAVEN INSTRUMENTS CORP, HOLTSVILLE, NY 11742 USA. ICI PAINTS, DECORAT RES, SLOUGH SL2 5DS, BERKS, ENGLAND. LOS ALAMOS NATL LAB, DIV PHYS, LOS ALAMOS, NM 87545 USA. LOS ALAMOS NATL LAB, SPACE SCI & TECHNOL GRP, LOS ALAMOS, NM 87545 USA. OI Armes, Steven/0000-0002-8289-6351 NR 34 TC 80 Z9 85 U1 2 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD SEP PY 1992 VL 8 IS 9 BP 2178 EP 2182 DI 10.1021/la00045a018 PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA JQ509 UT WOS:A1992JQ50900018 ER PT J AU VERHOEVEN, JD PENDRAY, AH AF VERHOEVEN, JD PENDRAY, AH TI EXPERIMENTS TO REPRODUCE THE PATTERN OF DAMASCUS STEEL BLADES SO MATERIALS CHARACTERIZATION LA English DT Article AB A brief review is presented of the microstructure of genuine Damascus blades and previous attempts to reproduce these blades in modern times. New experiments are presented that use two different methods to try to produce steel blades that match the surface patterns and microstructures of Damascus blades. The first method was designed after the proposed reconstruction of Wadsworth and Sherby. These experiments were not successful, and possible reasons for the lack of success are discussed. The second method utilized small steel ingots with compositions modeled after those of genuine blades. These ingots were extremely hot short and subject to graphitization during forging. Techniques were developed to overcome these problems, and the final forged blades show surface patterns and internal microstructures that closely match the genuine Damascus blades. C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP VERHOEVEN, JD (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT MAT SCI & ENGN,AMES,IA 50011, USA. NR 11 TC 16 Z9 18 U1 2 U2 8 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1044-5803 J9 MATER CHARACT JI Mater. Charact. PD SEP PY 1992 VL 29 IS 2 BP 195 EP 212 DI 10.1016/1044-5803(92)90115-X PG 18 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing SC Materials Science; Metallurgy & Metallurgical Engineering GA JX983 UT WOS:A1992JX98300010 ER PT J AU SUGAMA, T CARCIELLO, N AF SUGAMA, T CARCIELLO, N TI PRECERAMIC POLYSILAZANE COATINGS FOR COLD-ROLLED STEELS SO MATERIALS LETTERS LA English DT Article ID SILICON; ENERGY AB Poly( 1, 1-dimethylsilazane) (PS 1 12), selected from various polysilazane species, was applied to cold-rolled steels as a preceramic-type protective coating against corrosion. The temperature for fabricating a continuous, uniform film of PS112 on the steel was critical; at greater-than-or-equal-to 400-degrees-C, pyrolytic conversion of the linear silazane structure into cyclic units caused the development of numerous microcracks, thereby resulting in poor protection. Although a good protective coating was formed at 300-degrees-C, the cathodic reaction, H2O + 1/2O2 + 2e- --> 2OH-, which occurs at corrosion sites of steel underneath the PS112 coating led to the delamination of the film from the steel. The cause of such delamination was not only the formation of corrosion products, but also was strongly associated with alkali-catalyzed hydrolysis of the film at its interface with steel. RP SUGAMA, T (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV ENERGY EFFICIENCY & CONSERVAT,UPTON,NY 11973, USA. NR 18 TC 8 Z9 8 U1 1 U2 4 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 1992 VL 14 IS 5-6 BP 322 EP 328 DI 10.1016/0167-577X(92)90046-M PG 7 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA JN037 UT WOS:A1992JN03700017 ER PT J AU KATOH, Y STOLLER, RE KOHNO, Y KOHYAMA, A AF KATOH, Y STOLLER, RE KOHNO, Y KOHYAMA, A TI NUMERICAL ESTIMATION OF SYNERGISTIC EFFECTS OF DISPLACEMENT DAMAGE AND HELIUM GENERATION ON MICROSTRUCTURAL EVOLUTION SO MATERIALS TRANSACTIONS JIM LA English DT Article DE AUSTENITIC STEEL; IRRADIATION EFFECTS; SWELLING; MICROSTRUCTURE; HELIUM EFFECTS; COMPUTER CALCULATION; MODELING ID CRITICAL RADIUS AB The effects of displacement damage rate, helium generation rate and other irradiation conditions on irradiation-induced microstructural changes and swelling in an austenitic stainless steel were investigated by numerical calculations. The computer model developed in this study dynamically integrates rate equations which describe the evolution of point defects, small point defect clusters including cascade vacancy clusters, cavity nucleation and the evolution of the cavity size distribution. The model was calibrated using data obtained from a dual-beam ion irradiation experiment. In this experiment, solution annealed Type 316 stainless steel was irradiated by 4 MeV nickel ions with simultaneous implantation of helium ions up to 25 dpa at 873 K. The He/dpa ratios and the displacement damage rates were in the range of 1 to 50 appm He/dpa and 2 x 10(-3) to 1 X 10(-2) dpa/s, respectively. These experiments showed that helium effects on dislocation evolution significantly influence the nucleation and growth of cavities. The predicted effects of helium over a broad range of damage rates were calculated using the calibrated model. C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. RP KATOH, Y (reprint author), UNIV TOKYO,DEPT MAT SCI,TOKYO 113,JAPAN. RI Stoller, Roger/H-4454-2011; OI Katoh, Yutai/0000-0001-9494-5862 NR 22 TC 4 Z9 4 U1 1 U2 4 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 1992 VL 33 IS 9 BP 795 EP 801 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA JU958 UT WOS:A1992JU95800002 ER PT J AU ARMSTRONG, R AF ARMSTRONG, R TI THEORETICAL-MODELS FOR THE COMBUSTION OF ALLOYABLE MATERIALS SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT SYMP ON REACTIONS SYNTHESIS OF MATERIALS, AT THE 1991 ANNUAL MEETING OF THE MINERALS, METALS AND MATERIALS SOC CY FEB 17-21, 1991 CL NEW ORLEANS, LA SP MINERALS MET & MAT SOC ID CONDENSED 2-PHASE COMBUSTION; SPINNING REACTION FRONTS; BIFURCATION AB The purpose of this work is to extend a theoretical model of layered (laminar) media for SHS combustion presented in an earlier article[1] to explore possible mechanisms for after-burning in SHS (i.e., gasless) combustion. As before, our particular interest is how the microscopic geometry of the solid reactants is reflected in the combustion wave and in the reaction product. The model is constructed from alternating lamina of two pure reactants that interdiffuse exothermically to form a product. Here, the laminar model is extended to contain layers of differing thicknesses. Using asymptotic theory, it was found that under certain conditions, the combustion wave can become "detached," and an initial thin flame propagates through the media, leaving a slower, thicker flame following behind (i.e., afterburning). Thin laminae are consumed in the initial flame and are thick in the secondary. The thin flame has a width determined by the inverse of the activation energy of diffusion, as found previously. The width of the afterburning zone, however, is determined by the absolute time of diffusion for the thicker laminae. Naturally, when the laminae are all the same thickness, there is only one thin flame. The condition for the appearance of afterburning is found to be contingent on the square of the ratio of smallest-to-largest thicknesses being considerably less than unity. RP ARMSTRONG, R (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550, USA. NR 17 TC 19 Z9 22 U1 0 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD SEP PY 1992 VL 23 IS 9 BP 2339 EP 2347 DI 10.1007/BF02658035 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA JM389 UT WOS:A1992JM38900002 ER PT J AU FLINN, JE BAE, JC KELLY, TF KORTH, GE AF FLINN, JE BAE, JC KELLY, TF KORTH, GE TI MICROSTRUCTURE STABILIZATION IN A RAPIDLY SOLIDIFIED TYPE-304 STAINLESS-STEEL - INFLUENCE ON TENSILE PROPERTIES SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT SYMP ON REACTIONS SYNTHESIS OF MATERIALS, AT THE 1991 ANNUAL MEETING OF THE MINERALS, METALS AND MATERIALS SOC CY FEB 17-21, 1991 CL NEW ORLEANS, LA SP MINERALS MET & MAT SOC ID POWDERS; GASES AB Tensile properties and their relationship with microstructural features were investigated for a rapid solidification processed (RSP) type 304 stainless steel (SS) extruded powder material and compared with those of a conventionally processed type 304 SS. Significant improvements in tensile strength were observed up to 800-degrees-C (maximum test temperature) for the RSP alloy. Stable and fine microstructural features, including grain size, small matrix precipitates, high residual dislocation density, and a high population of nanosized void/cavities, were observed in the RSP specimens after heat treatments to 0.9T(m). The microstructural features directly responsible for strengthening the RSP alloy were small grain size and the residual dislocation density. C1 KOREA ADV INST SCI & TECHNOL,CTR ADV MAT,SEOUL 131,SOUTH KOREA. UNIV WISCONSIN,DEPT MAT SCI & MET ENGN,MADISON,WI 53706. RP FLINN, JE (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415, USA. NR 33 TC 2 Z9 2 U1 0 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD SEP PY 1992 VL 23 IS 9 BP 2557 EP 2565 DI 10.1007/BF02658059 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA JM389 UT WOS:A1992JM38900026 ER PT J AU SCULLY, JR PEEBLES, DE ROMIG, AD FREAR, DR HILLS, CR AF SCULLY, JR PEEBLES, DE ROMIG, AD FREAR, DR HILLS, CR TI METALLURGICAL FACTORS INFLUENCING THE CORROSION OF ALUMINUM, AL-CU, AND AL-SI ALLOY THIN-FILMS IN DILUTE HYDROFLUORIC SOLUTION SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT SYMP ON REACTIONS SYNTHESIS OF MATERIALS, AT THE 1991 ANNUAL MEETING OF THE MINERALS, METALS AND MATERIALS SOC CY FEB 17-21, 1991 CL NEW ORLEANS, LA SP MINERALS MET & MAT SOC ID LOCALIZED CORROSION; METALLIZATION; PHOTOELECTRON; EVOLUTION; BEHAVIOR; GROWTH; OXIDES; COPPER; NOISE AB The corrosion behavior of sputter-deposited Al, Al-Cu, and Al-Si alloy thin films in dilute hydrofluoric (HF) acid solution was investigated. These materials maintain a thin aluminum oxide film in dilute HF solutions and, consequently, are susceptible to localized corrosion. Pit densities increase for the alloys with Cu and, to a lesser extent, Si additions. Open circuit potentials (OCP) are more positive for such alloys relative to the OCP of pure Al. Metastable pits in Al-Cu alloys are formed in Cu-depleted zones at grain boundaries which are galvanically coupled to adjacent theta-Al2Cu precipitates. Metastable pits in Al-Si alloys are formed in the Al matrix which is galvanically coupled to adjacent elemental Si nodules. Theta-Al2Cu has different electrochemical characteristics than Al, even though both maintain a thin Al oxide in dilute HF solutions. Theta-Al2Cu has a more positive OCP than pure Al and facilitates cathodic reactions at enhanced rates relative to pure Al. Hence, its presence raises the potential of the adjacent pure Al grain boundary to potentials which increase the probability of metastable pitting. Evidence is also presented which suggests that metastable pit growth may be cathode limited. A new hypothesis describing one mechanism by which theta-Al2Cu supports cathodic electron transfer reactions is discussed. C1 SANDIA NATL LABS,ORG 1830,LIVERMORE,CA 94550. SANDIA NATL LABS,ORG 1820,LIVERMORE,CA 94550. RP SCULLY, JR (reprint author), UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903, USA. NR 61 TC 46 Z9 46 U1 0 U2 9 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD SEP PY 1992 VL 23 IS 9 BP 2641 EP 2655 DI 10.1007/BF02658068 PG 15 WC Materials Science, Multidisciplinary SC Materials Science GA JM389 UT WOS:A1992JM38900035 ER PT J AU HOWARD, WM MEYER, BS CLAYTON, DD AF HOWARD, WM MEYER, BS CLAYTON, DD TI HEAVY-ELEMENT ABUNDANCES FROM A NEUTRON BURST THAT PRODUCES XE-H SO METEORITICS LA English DT Article ID S-PROCESS; INTERSTELLAR DIAMONDS; SUPER-NOVAE; XENON; METEORITES; ORIGIN; ALLENDE; GRAINS AB We examine quantitatively the suggestion that the heavy anomalous isotopes of Xe-HL found in meteoritic diamonds were produced by a short intense neutron burst and then implanted into the diamonds. Using a large nuclear reaction network we establish one (out of many) neutron irradiation histories that successfully reproduces the heavy isotopes of Xe-HL, and then evaluate what that same history would produce in every heavy element. This has become more relevant following recent measurement of anomalous Ba and Sr in those same diamond samples. Therefore we offer these calculations as a guide to the anomalies to be expected in all elements if this scenario is correct. We also discuss several other aspects of the problem, especially the established contradictions for Ba, the observed Kr pattern, the near normalcy of Xe-129, and some related astrophysical ideas. In particular we argue from p-process theory that the observed deficit of Kr-78 in correlation with Xe-124-126 excess implicates Type II supernovae as the diamond sources. However, our more complete astrophysical conclusions will be published elsewhere. This present work is offered as computational expectation for this class of models and as a guide to considerations that may accelerate the digestion of new experimental results in the diamonds. C1 CLEMSON UNIV,CLEMSON,SC 29634. RP HOWARD, WM (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 36 TC 45 Z9 45 U1 0 U2 1 PU METEORITICAL SOC PI FAYETTEVILLE PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 SN 0026-1114 J9 METEORITICS JI Meteoritics PD SEP PY 1992 VL 27 IS 4 BP 404 EP 412 PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA JU056 UT WOS:A1992JU05600011 ER PT J AU BARCELLOSHOFF, MH AF BARCELLOSHOFF, MH TI ACTIVATION OF TRANSFORMING GROWTH FACTOR-BETA-1 (TGF-BETA) AND STROMAL EXTRACELLULAR-MATRIX REMODELING ARE INDUCED BY RADIATION SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A29 EP A29 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25500165 ER PT J AU BOUDREAU, NI BISSELL, MI AF BOUDREAU, NI BISSELL, MI TI ABERRANT DEVELOPMENT OF THE CHICK LIMB FOLLOWING COEXPRESSION OF V-SRC AND ETS-1, BFGF OR TGF-BETA SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A329 EP A329 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501911 ER PT J AU DISCHER, D PARRA, M CONBOY, J MOHANDAS, N AF DISCHER, D PARRA, M CONBOY, J MOHANDAS, N TI MEMBRANE STRENGTH IMPARTED BY PROTEIN 4.1S ALTERNATIVELY-SPLICED SPECTRIN-ACTIN BINDING DOMAIN SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DEPT CELL & MOLEC BIOL,BERKELEY,CA 94720. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A269 EP A269 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501562 ER PT J AU GOLDSTEIN, B AF GOLDSTEIN, B TI CELL ACTIVATION THROUGH THE AGGREGATION OF CELL-SURFACE RECEPTORS SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,THEORET BIOL & BIOPHYS GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A100 EP A100 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25500576 ER PT J AU GUTHRIDGE, CJ STAMPFER, MR CLARK, MA STEINER, MR AF GUTHRIDGE, CJ STAMPFER, MR CLARK, MA STEINER, MR TI PHOSPHOLIPASE-A2 ACTIVITIES IN IMMORTALIZED AND K-RAS TRANSFORMED HUMAN MAMMARY EPITHELIAL-CELLS SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 UNIV KENTUCKY,DEPT MICROBIOL & IMMUNOL,LEXINGTON,KY 40506. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. SCHERING PLOUGH CORP,RES LABS,BLOOMFIELD,NJ 07003. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A20 EP A20 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25500114 ER PT J AU JAP, BK EARNEST, TN WALIAN, PJ GEHRING, K AF JAP, BK EARNEST, TN WALIAN, PJ GEHRING, K TI STRUCTURE AND FUNCTION OF OUTER-MEMBRANE CHANNELS SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DONNER LAB,BERKELEY,CA 94720. RI Gehring, Kalle/I-4403-2013 OI Gehring, Kalle/0000-0001-6500-1184 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A193 EP A193 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501120 ER PT J AU LUCAS, JN SACHS, RK AF LUCAS, JN SACHS, RK TI USING 3-COLOR CHROMOSOME PAINTING TO DECIDE BETWEEN CHROMOSOME ABERRATION MODELS SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DIV BIOMED & ENVIRONM SCI,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A137 EP A137 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25500794 ER PT J AU SCHMIDHAUSER, C CASPERSON, GF MYERS, CA SANZO, KT BOLTEN, S BISSELL, MJ AF SCHMIDHAUSER, C CASPERSON, GF MYERS, CA SANZO, KT BOLTEN, S BISSELL, MJ TI A NOVEL TRANSCRIPTIONAL ENHANCER IS INVOLVED IN THE PROLACTIN-DEPENDENT AND EXTRACELLULAR MATRIX-DEPENDENT REGULATION OF BETA-CASEIN GENE-EXPRESSION SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV CELL & MOLEC BIOL,BERKELEY,CA 94720. MONSANTO CO,CORP RES,CHESTERFIELD,MO 63198. NR 0 TC 2 Z9 2 U1 0 U2 3 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A203 EP A203 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501178 ER PT J AU SHATTUCK, MB GUSTAFSSON, MGL YANAGIMOTO, KC BHATNAGAR, RS CLARKE, J FISHER, KA AF SHATTUCK, MB GUSTAFSSON, MGL YANAGIMOTO, KC BHATNAGAR, RS CLARKE, J FISHER, KA TI FORCE MICROSCOPY OF COLLAGEN AT 143-K SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 UNIV CALIF SAN FRANCISCO,FI PROCTOR FDN,SAN FRANCISCO,CA 94143. UNIV CALIF SAN FRANCISCO,DEPT ANAT BIOCHEM & BIOPHYS,SAN FRANCISCO,CA 94143. UNIV CALIF SAN FRANCISCO,BIOENGN GRP,SAN FRANCISCO,CA 94143. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV MAT SCI,CTR ADV MAT,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A227 EP A227 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501317 ER PT J AU SYMPSON, CJ TALHOUK, RS ALEXANDER, CM CHIN, JR WERB, Z BISSELL, MJ AF SYMPSON, CJ TALHOUK, RS ALEXANDER, CM CHIN, JR WERB, Z BISSELL, MJ TI EXPRESSION OF WAP-STROMELYSIN TRANSGENE IN CD-1 MICE ALTERS MAMMARY SPECIFIC GENE-EXPRESSION AND MORPHOLOGY SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 UNIV CALIF SAN FRANCISCO,RADIOBIOL & ENVIRONM HLTH LAB,SAN FRANCISCO,CA 94143. LAWRENCE BERKELEY LAB,DIV MED 2,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA PUBL OFFICE, 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD SEP PY 1992 VL 3 SU S BP A187 EP A187 PG 1 WC Cell Biology SC Cell Biology GA JR255 UT WOS:A1992JR25501087 ER PT J AU HAYS, ID AF HAYS, ID TI MATERIALS SCIENCE AND TECHNOLOGY - A MODEL FOR ACHIEVING NATIONAL EDUCATION GOALS SO MRS BULLETIN LA English DT Article RP HAYS, ID (reprint author), PACIFIC NW LAB, CTR SCI EDUC, RICHLAND, WA 99352 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0883-7694 J9 MRS BULL JI MRS Bull. PD SEP PY 1992 VL 17 IS 9 BP 27 EP 31 PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA JN564 UT WOS:A1992JN56400004 ER PT J AU WITT, KL GUDI, R BISHOP, JB AF WITT, KL GUDI, R BISHOP, JB TI INDUCTION OF KINETOCHORE POSITIVE AND NEGATIVE MICRONUCLEI IN MOUSE BONE-MARROW CELLS BY SALICYLAZOSULFAPYRIDINE AND SULFAPYRIDINE SO MUTATION RESEARCH LA English DT Article DE SALICYLAZOSULFAPYRIDINE; SULFAPYRIDINE; ANEUPLOIDY; KINETOCHORES; MICRONUCLEUS ID ANEUPLOIDY-INDUCING AGENTS; ANTIKINETOCHORE ANTIBODY; HUMAN-LYMPHOCYTES; ERYTHROCYTES; IDENTIFICATION; SULPHASALAZINE; INVIVO; ASSAY AB Salicylazosulfapyridine (SASP) and its major metabolite sulfapyridine (SP) have been shown to induce chromosomal damage in vivo. Both chemicals were tested in the micronucleus (MN)/kinetochore (KC) staining test to gain insight into the question of whether chromosomal breakage, aneuploidy-inducing events, or both were important to the observed production of MN in bone marrow cells of mice. In this test, both SASP and SP were shown to be strong inducers of kinetochore positive (KC+) MN. Although small increases in, kinetochore negative (KC -) MN were also observed in SP treated mice, as well as in mice receiving the highest dose of SASP tested, the results suggest that both chemicals induce predominantly aneuploidogenic type damage. C1 NIEHS,EXPTL CARCINOGENESIS & MUTAGENESIS BRANCH,POB 12233,MD E403,RES TRIANGLE PK,NC 27709. OAK RIDGE ASSOCIATED UNIV,OAK RIDGE,TN 37830. SITEK RES LAB,ROCKVILLE,MD. NR 21 TC 12 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8262 J9 MUTAT RES PD SEP PY 1992 VL 283 IS 1 BP 53 EP 57 DI 10.1016/0165-7992(92)90121-W PG 5 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA JL410 UT WOS:A1992JL41000008 PM 1380663 ER PT J AU WITT, KL BISHOP, JB MCFEE, AF KUMAROO, V AF WITT, KL BISHOP, JB MCFEE, AF KUMAROO, V TI INDUCTION OF CHROMOSOMAL DAMAGE IN MAMMALIAN-CELLS INVITRO AND INVIVO BY SULFAPYRIDINE OR 5-AMINOSALICYLIC ACID SO MUTATION RESEARCH LA English DT Article DE SALICYLAZOSULFAPYRIDINE; SULFAPYRIDINE; 5-AMINOSALICYLIC ACID; MICRONUCLEUS; SISTER-CHROMATID EXCHANGES; CHROMOSOMAL ABERRATIONS ID MUTAGENICITY AB Sulfapyridine (SP) and 5-aminosalicylic acid (5-ASA) are the two primary metabolites of the anti-inflammatory drug salicylazosulfapyridine (SASP). These two metabolites were studied for induction of chromosomal damage in mammalian cells, in vitro and in vivo, in an attempt to understand better the genetic effects produced by SASP in humans and laboratory mice. To this end, SP and 5-ASA were tested for induction of sister-chromatid exchanges (SCE) and chromosomal aberrations (Abs) in Chinese hamster ovary (CHO) cells in vitro. In addition, they were tested in vivo for induction of micronuclei (MN) in mouse bone marrow polychromatic erythrocytes (PCE). SP gave positive results in the in vitro SCE test and the in vivo MN test, and negative results in the in vitro Abs test. 5-ASA was negative in all three tests. These results indicate that it is the SP metabolite of SASP that is necessary for the induction of chromosomal damage reported to occur in humans and mice after treatment with SASP. C1 NIEHS,EXPTL CARCINOGENESIS & MUTAGENESIS BRANCH,POB 12233,MDE403,RES TRIANGLE PK,NC 27709. OAK RIDGE ASSOCIATED UNIV,OAK RIDGE,TN 37830. SITEK RES LAB,ROCKVILLE,MD. NR 7 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8262 J9 MUTAT RES PD SEP PY 1992 VL 283 IS 1 BP 59 EP 64 DI 10.1016/0165-7992(92)90122-X PG 6 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA JL410 UT WOS:A1992JL41000009 PM 1380664 ER PT J AU BLALOCK, L BOYD, G AF BLALOCK, L BOYD, G TI TRANSCOM GOES ON THE ROAD SO NUCLEAR ENGINEERING INTERNATIONAL LA English DT Article RP BLALOCK, L (reprint author), US DOE,DIV TRANSPORTAT MANAGEMENT,TRANSPORTAT LOGIST PROGRAM,WASHINGTON,DC 20585, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS PUBLISHING LTD PI SUTTON PA QUADRANT HOUSE THE QUADRANT, SUTTON, SURREY, ENGLAND SM2 5AS SN 0029-5507 J9 NUCL ENG INT JI Nucl. Eng. Int. PD SEP PY 1992 VL 38 IS 458 BP 51 EP 52 PG 2 WC Nuclear Science & Technology SC Nuclear Science & Technology GA JP422 UT WOS:A1992JP42200016 ER PT J AU BELL, MG SCHMIDT, GL EFTHIMION, PC GREK, B HULSE, RA OWENS, DK PARK, HK RAMSEY, AT SCHIVELL, JF TAYLOR, G AF BELL, MG SCHMIDT, GL EFTHIMION, PC GREK, B HULSE, RA OWENS, DK PARK, HK RAMSEY, AT SCHIVELL, JF TAYLOR, G TI ATTAINMENT OF HIGH PLASMA DENSITIES IN TFTR WITH INJECTION OF MULTIPLE DEUTERIUM PELLETS SO NUCLEAR FUSION LA English DT Article ID TOKAMAKS AB Sequential injection of multiple deuterium pellets combined with high power neutral beam heating in TFTR has produced stable plasmas with very high central densities, up to 5 X 10(20) m-3. The line averaged densities achieved in these experiments correspond to Murakami parameters n(e)R/B(T)BAR up to 12 x 10(19) m-2.T-1. This value, which does not appear to represent an intrinsic density limit, surpasses the values previously obtained in TFTR and exceeds, by more than a factor of two, the density limit predicted by the scaling of Greenwald et al. (Nuclear Fusion 28 (1988) 2199). The highest densities obtained with both pellet and gas fuelling have been achieved since boronization was applied to the first wall in TFTR. The characteristics and energy balance of the highest density plasma are discussed. RP BELL, MG (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08544, USA. NR 18 TC 19 Z9 19 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 1992 VL 32 IS 9 BP 1585 EP 1591 DI 10.1088/0029-5515/32/9/I06 PG 7 WC Physics, Fluids & Plasmas SC Physics GA JU249 UT WOS:A1992JU24900006 ER PT J AU HANSON, GR HARRIS, JH WILGEN, JB THOMAS, CE ACETO, SC BAYLOR, LR BELL, JD BRANAS, B DUNLAP, JL ENGLAND, AC HIDALGO, C MURAKAMI, M RASMUSSEN, DA SANZ, JS SCHWELBERGER, JG UCKAN, T ZIELINSKI, JJ AF HANSON, GR HARRIS, JH WILGEN, JB THOMAS, CE ACETO, SC BAYLOR, LR BELL, JD BRANAS, B DUNLAP, JL ENGLAND, AC HIDALGO, C MURAKAMI, M RASMUSSEN, DA SANZ, JS SCHWELBERGER, JG UCKAN, T ZIELINSKI, JJ TI DENSITY FLUCTUATION MEASUREMENTS IN ATF USING CORRELATION REFLECTOMETRY SO NUCLEAR FUSION LA English DT Article ID EDGE PLASMA TURBULENCE; ION BEAM PROBE; TOKAMAK EDGE; TORSATRON; SCATTERING; LAYER AB A two-frequency correlation reflectometer has been operated on the Advanced Toroidal Facility (ATF) to measure plasma electron density fluctuations. This reflectometer uses quadrature phase detection to permit true phase measurement of the reflected microwave signal (probing beam). By measuring the phase fluctuations in the reflected probing beam, the amplitude of the density fluctuations can be estimated. Simultaneous two-frequency operation makes it possible to measure the coherence between fluctuations at two radially separated cut-off layers, from which the radial correlation lengths and wavenumbers can be estimated. This reflectometer has been used to study the density fluctuations in the edge gradient region of low density ATF plasmas produced by electron cyclotron heating. These studies have revealed globally coherent turbulence with a radial correlation length of up to approximately 5 cm, a radial wavenumber k(r) approximately 0 cm-1 and a poloidal wavenumber k(theta) approximately 1 cm-1. The rms amplitude of the fluctuations reaches a maximum of approximately 5% at the plasma edge (rho = 1, where rho is the flux surface normalized radius) and decreases with decreasing radius to a level of less than or similar 1 %. Simultaneous measurements of the fluctuations with the reflectometer, the heavy ion beam probe and the fast reciprocating Langmuir probe provide consistent results. A comparison of the measurements with simplistic mixing length estimates, n(e)/n(e)BAR = 1/k(theta)L(n) or n(e)/n(e)BAR = 1/k(r)L(n), shows that these estimates are too high by factors of two to more than 100, while a comparison with a more detailed estimate for the pressure gradient driven resistive interchange turbulence yields reasonable agreement with the experimentally measured fluctuation characteristics. RP HANSON, GR (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN, USA. RI Hidalgo, Carlos/H-6109-2015 NR 38 TC 37 Z9 37 U1 0 U2 1 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 1992 VL 32 IS 9 BP 1593 EP 1608 DI 10.1088/0029-5515/32/9/I07 PG 16 WC Physics, Fluids & Plasmas SC Physics GA JU249 UT WOS:A1992JU24900007 ER PT J AU STAMBAUGH, RD LAO, LL LAZARUS, EA AF STAMBAUGH, RD LAO, LL LAZARUS, EA TI RELATION OF VERTICAL STABILITY AND ASPECT RATIO IN TOKAMAKS SO NUCLEAR FUSION LA English DT Letter ID DIII-D; CONFINEMENT AB It is evaluated how the upper limit to plasma elongation kappa, caused by vertical stability, varies with the aspect ratio A = R/a of the tokamak. Equilibria were generated with EFITD and the vertical stability was assessed by GATO. For a 'generic' tokamak with a superconducting wall conformal to the plasma shape and a distance 0.5 a away from the plasma edge and a constant current profile (q0 = 1.0, l(i) congruent-to 1.0, q95 = 3.2) it is found that the maximum stable kappa decreased only slowly from 2.65 at A = 2.0 to 2.4 at A = 6.0. To first order, a reasonable assumption in trade-off studies of new machine designs is no dependence of kappa(max) on A. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. RP STAMBAUGH, RD (reprint author), GEN ATOM,SAN DIEGO,CA, USA. NR 14 TC 14 Z9 14 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 1992 VL 32 IS 9 BP 1642 EP 1646 DI 10.1088/0029-5515/32/9/I12 PG 5 WC Physics, Fluids & Plasmas SC Physics GA JU249 UT WOS:A1992JU24900012 ER PT J AU MCKAGUE, HL HEARST, JR WARD, RL BURKHARD, NR AF MCKAGUE, HL HEARST, JR WARD, RL BURKHARD, NR TI NUCLEAR-MAGNETIC-RESONANCE DETERMINATION OF THE NONPORE WATER-CONTENT OF ZEOLITIC TUFFS AND ITS APPLICATION TO CORRECTION OF EPITHERMAL-NEUTRON-LOG-DERIVED WATER-CONTENT SO NUCLEAR GEOPHYSICS LA English DT Article AB Saturations in excess of 100% are commonly calculated from measured grain density, bulk density and water content in clinoptilolite-bearing volcanic rocks at the Nevada Test Site, because the neutron log used to measure water content measures nonpore water as well as water in the pores. We have used nuclear magnetic resonance to determine the nonpore water in samples, and we then corrected log data for that nonpore water. It is desirable to desiccate the samples before the NMR measurements are made. C1 LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94551. NR 0 TC 4 Z9 4 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0969-8086 J9 NUCL GEOPHYS JI Nucl. Geophys. PD SEP PY 1992 VL 6 IS 3 BP 359 EP 366 PG 8 WC Geochemistry & Geophysics; Nuclear Science & Technology; Mining & Mineral Processing SC Geochemistry & Geophysics; Nuclear Science & Technology; Mining & Mineral Processing GA JY017 UT WOS:A1992JY01700005 ER PT J AU BLUM, EB HALBACH, K AF BLUM, EB HALBACH, K TI PERFORMANCE OF ELECTROMAGNET AND PERMANENT-MAGNET QUADRUPOLES WITH IRON POLES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID MULTIPOLE MAGNETS AB The largest field that can be obtained at the pole tip of an iron core quadrupole is limited by saturation in the iron and by its excitation by either the current density in the coil or the remanent field of the permanent magnet material. An analytical model is used to find the saturation limited performance of quadrupoles with either electromagnet or permanent magnet excitation. The results are presented in a form that can be used to evaluate proposed magnet designs but, more significantly, show that the strength of the excitation has less of an effect on the pole tip field than the size of the magnet needed to achieve it and that saturation has more of an effect on the achievable field strength than excitation strength does. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP BLUM, EB (reprint author), BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973, USA. NR 3 TC 2 Z9 3 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 1992 VL 320 IS 3 BP 432 EP 438 DI 10.1016/0168-9002(92)90939-2 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JL874 UT WOS:A1992JL87400003 ER PT J AU FRABETTI, PL GIORDANO, V MOLINARI, G BOGART, CW CHEUNG, HWK COTEUS, P CULY, S CUMALAT, JP DALLAPICCOLA, C ERDOS, E GINKEL, J JOHNS, W SCHULTZ, G BUTLER, JN CIHANGIR, S COTTARAMUSINO, A CURRIER, R DAVENPORT, F GAINES, I GARBINCIUS, PH GOURLAY, SA HARDING, DJ HANSEN, S JUSTICE, R KEPHART, K KASPER, P KREYMER, A LEBRUN, P SHUKLA, S BIANCO, S FABBRI, FL GIARDONI, M PASSAMONTI, L RUSSO, V SPALLONE, A ZALLO, A CULBERTSON, R DIESBURG, M JAROSS, G LINGEL, K SHELDON, PD WISS, J ALIMONTI, G BELLINI, G CAVALETTI, WR DANGELO, P DICORATO, M GIAMMARCHI, MG INZANI, P LEVERARO, F MALVEZZI, S MANFREDI, PF MENASCE, D MERONI, E MORONI, L PEDRINI, D PERASSO, L RAGUSA, F SALA, A SALA, S TORRETTA, D VITTONE, M BUCHHOLZ, D CASTOLDI, C CLAES, D GOBBI, B OREILLY, B PARK, S TILDEN, R YOSHIDA, R BAUMBAUGH, BW BISHOP, JM BUSENITZ, JK CASON, NM CUNNINGHAM, JD GARDNER, RW KENNEDY, CJ KIM, GN LIN, TF MANNEL, EJ MOUNTAIN, RJ PUSELJIC, DL RUCHTI, RC SHEPHARD, WD SWIATEK, JA WU, ZY ZANABRIA, ME ARENA, V BOCA, G DIAFERIA, R RATTI, SP RICCARDI, C VITULO, P LOPEZ, A MENDEZ, H PAOLONE, V YAGER, PM WILSON, JR FILASETTA, JF AF FRABETTI, PL GIORDANO, V MOLINARI, G BOGART, CW CHEUNG, HWK COTEUS, P CULY, S CUMALAT, JP DALLAPICCOLA, C ERDOS, E GINKEL, J JOHNS, W SCHULTZ, G BUTLER, JN CIHANGIR, S COTTARAMUSINO, A CURRIER, R DAVENPORT, F GAINES, I GARBINCIUS, PH GOURLAY, SA HARDING, DJ HANSEN, S JUSTICE, R KEPHART, K KASPER, P KREYMER, A LEBRUN, P SHUKLA, S BIANCO, S FABBRI, FL GIARDONI, M PASSAMONTI, L RUSSO, V SPALLONE, A ZALLO, A CULBERTSON, R DIESBURG, M JAROSS, G LINGEL, K SHELDON, PD WISS, J ALIMONTI, G BELLINI, G CAVALETTI, WR DANGELO, P DICORATO, M GIAMMARCHI, MG INZANI, P LEVERARO, F MALVEZZI, S MANFREDI, PF MENASCE, D MERONI, E MORONI, L PEDRINI, D PERASSO, L RAGUSA, F SALA, A SALA, S TORRETTA, D VITTONE, M BUCHHOLZ, D CASTOLDI, C CLAES, D GOBBI, B OREILLY, B PARK, S TILDEN, R YOSHIDA, R BAUMBAUGH, BW BISHOP, JM BUSENITZ, JK CASON, NM CUNNINGHAM, JD GARDNER, RW KENNEDY, CJ KIM, GN LIN, TF MANNEL, EJ MOUNTAIN, RJ PUSELJIC, DL RUCHTI, RC SHEPHARD, WD SWIATEK, JA WU, ZY ZANABRIA, ME ARENA, V BOCA, G DIAFERIA, R RATTI, SP RICCARDI, C VITULO, P LOPEZ, A MENDEZ, H PAOLONE, V YAGER, PM WILSON, JR FILASETTA, JF TI DESCRIPTION AND PERFORMANCE OF THE FERMILAB-E687 SPECTROMETER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID LIFETIMES; DETECTOR AB The magnetic spectrometer and charged particle tracking system used in Fermilab experiment 687 to study the photoproduction and decay of charm particles are described in detail. The photons are produced by a wideband electron beam which can operate at energies up to 600 GeV/c. The spectrometer consists of a high resolution silicon microstrip detector, a large aperture dipole magnet, proportional chambers, a second large aperture dipole, and more proportional chambers. Three multi-cel threshold Cherenkov counters provide charged particle identification. The tracking system is capable of resolving the secondary decay vertices of charm and beauty mesons and baryons from the primary interaction vertex. It also determines the invariant mass of the multibody final states of particles containing heavy quarks with excellent resolution. The particle identification system allows one to identify kaons and protons present in these final states clearly. This collection of detectors produces very clean signals for charm particles and permits one to make many cross checks of the apparatus. The performance is illustrated for a variety of charm signals. Of particular interest is a description of the tracking through the silicon microstrip detector and its use in isolating downstream decay vertices. Two complementary approaches to the reconstruction of secondary decay vertices are presented and insight is gained by comparing their strengths and weaknesses. C1 IST NAZL FIS NUCL,BOLOGNA,ITALY. UNIV COLORADO,BOULDER,CO 80309. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. UNIV ILLINOIS,URBANA,IL 61801. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. NATL INST NUCL PHYS,MILAN,ITALY. NORTHWESTERN UNIV,EVANSTON,IL 60208. UNIV NOTRE DAME,NOTRE DAME,IN 46556. UNIV PAVIA,DIPARTIMENTO FIS,I-27100 PAVIA,ITALY. IST NAZL FIS NUCL,I-27100 PAVIA,ITALY. UNIV PUERTO RICO,MAYAGUEZ,PR 00708. INST POLITECN NACL,CINVESTAV,MEXICO CITY 07000,DF,MEXICO. UNIV CALIF DAVIS,DAVIS,CA 95616. UNIV S CAROLINA,COLUMBIA,SC 29208. NO KENTUCKY UNIV,HIGHLAND HTS,KY 41076. RP FRABETTI, PL (reprint author), UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY. RI Menasce, Dario Livio/A-2168-2016; OI bianco, stefano/0000-0002-8300-4124; Menasce, Dario Livio/0000-0002-9918-1686; Cotta Ramusino, Angelo/0000-0003-1727-2478 NR 12 TC 128 Z9 128 U1 0 U2 5 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 1992 VL 320 IS 3 BP 519 EP 547 DI 10.1016/0168-9002(92)90948-4 PG 29 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JL874 UT WOS:A1992JL87400012 ER PT J AU SCHECKER, JA SCHAUER, MM HOLZSCHEITER, K HOLZSCHEITER, MH AF SCHECKER, JA SCHAUER, MM HOLZSCHEITER, K HOLZSCHEITER, MH TI THE PERFORMANCE OF A MICROCHANNEL PLATE AT CRYOGENIC TEMPERATURES AND IN HIGH MAGNETIC-FIELDS, AND THE DETECTION EFFICIENCY FOR LOW-ENERGY POSITIVE HYDROGEN-IONS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB We have conducted a systematic study of the performance of a microchannel plate at cryogenic temperatures, and in a magnetic field perpendicular to the plate surface of up to 2.5 T. We observe no change in the characteristic pulse height distribution down to temperatures near 4 K if the count rate is kept sufficiently low. With increasing count rates the onset of saturation effects can be observed to be temperature dependent. For the specific plate used, this occurs around 1 kHz at the lowest temperature. This behavior is in good agreement with calculations based on a widely used model for the gain function of microchannel plates, if the plate resistance is allowed to be temperature dependent. Additionally we have studied the detection efficiency for low energy hydrogen ions of a chevron type microchannel plate under a variety of operating conditions at room temperature, and find the detection efficiency to level off around 60% at energies above 1 keV, if the plate is operated in a saturated gain mode. RP SCHECKER, JA (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 10 TC 11 Z9 11 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 1992 VL 320 IS 3 BP 556 EP 561 DI 10.1016/0168-9002(92)90950-9 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JL874 UT WOS:A1992JL87400014 ER PT J AU TAKAYAMA, K GOVIL, R SESSLER, AM AF TAKAYAMA, K GOVIL, R SESSLER, AM TI MACROPARTICLE THEORY OF A STANDING WAVE FREE-ELECTRON LASER 2-BEAM ACCELERATOR SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB Free-electron laser operation is formulated using a macroparticle approach based on a universal gain equation. Microwave excitation in a single cavity is derived analytically and is given in the form of analytic recursion equations for a multicavity system driven by a sequence of electron bunches. Qualitative and quantitative insights into the basic excitation and saturation mechanisms are provided. Stability analysis on a test particle moving around a macroparticle shows the importance of precise control of bunch spacing. C1 TEXAS ACCELERATOR CTR,THE WOODLANDS,TX 77381. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP TAKAYAMA, K (reprint author), UNIV HOUSTON,INST BEAM PARTICLE DYNAM,HOUSTON,TX 77204, USA. NR 10 TC 3 Z9 3 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 1992 VL 320 IS 3 BP 587 EP 593 DI 10.1016/0168-9002(92)90954-3 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JL874 UT WOS:A1992JL87400018 ER PT J AU FAIDAS, H CHRISTOPHOROU, LG AF FAIDAS, H CHRISTOPHOROU, LG TI THE LOW FIELD ELECTRON-MOBILITY OF TETRAMETHYLSILANE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Letter ID DIELECTRIC LIQUIDS AB The room temperature low field electron mobility of tetramethylsilane was measured to be 111 +/- 4 cm2 s-1 V-1. C1 UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. RP FAIDAS, H (reprint author), OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,ATOM MOLEC & HIGH VOLTAGE PHYS GRP,OAK RIDGE,TN 37831, USA. NR 3 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 1992 VL 320 IS 3 BP 608 EP 609 DI 10.1016/0168-9002(92)90960-C PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JL874 UT WOS:A1992JL87400024 ER PT J AU BRONIC, IK KIMURA, M INOKUTI, M DILLON, MA AF BRONIC, IK KIMURA, M INOKUTI, M DILLON, MA TI THE FANO FACTOR FOR ELECTRONS IN GAS-MIXTURES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article ID LOW-ENERGY ELECTRONS; IONIZATION YIELD; BINARY-MIXTURES; STATISTICAL FLUCTUATIONS; PROPORTIONAL COUNTER; INITIAL PRODUCTS; X-RAYS; XENON; ARGON; DEGRADATION AB Data on statistical fluctuations of ionization yield, or the Fano factor, for electrons in gas mixtures are systematized. Empirical results indicate that the Fano factor for electrons in a regular mixture, F(mix), can be represented by the Fano factors F(A) and F(B) for the pure components: F(mix) = (F(A) - F(B)) z + F(B), where z is an energy partition parameter. Good agreement between F(mix) thus calculated and experimental or theoretical Fano factors is obtained for binary mixtures, while the difference between the measured Fano factor and F(mix) is about 10% for tissue-equivalent gas mixtures. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RICE UNIV,DEPT PHYS,HOUSTON,TX 77251. RP BRONIC, IK (reprint author), RUDJER BOSKOVIC INST,POB 1016,BIJENICKA 54,YU-41001 ZAGREB,YUGOSLAVIA. NR 36 TC 3 Z9 3 U1 1 U2 3 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 1992 VL 71 IS 4 BP 366 EP 370 DI 10.1016/0168-583X(92)95352-R PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JR721 UT WOS:A1992JR72100002 ER PT J AU LAM, NQ JOHANNESSEN, K AF LAM, NQ JOHANNESSEN, K TI PHYSICAL SPUTTERING OF CU-NI ALLOYS - A MOLECULAR-DYNAMICS STUDY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article ID BOMBARDMENT-INDUCED SEGREGATION; EMBEDDED-ATOM METHOD; SURFACE SEGREGATION; COMPUTER-SIMULATION; ION-BOMBARDMENT; ANGULAR-DISTRIBUTIONS; ENHANCED DIFFUSION; EUTECTIC ALLOY; DEPTH; AUGER AB Several important aspects of physical sputtering of Cu-Ni alloys by Ar+ ions were simulated in the present work, using molecular dynamics and embedded-atom potentials. The total sputtering yields obtained for 0.5, 1, and 3 keV bombardments are closer to the experimental values for pure Cu than for Ni, and depend only slightly on alloy composition and temperature (up to 600 K). Sputtering of Cu atoms is slightly preferential, with the partial (or component) sputtering yield ratio Y(Cu)/Y(Ni) congruent-to 1.2, weakly dependent on ion energy and composition. The sputter fraction from the first atom layer decreases from 0.98 to 0.86 when the ion energy increases from 0.5 to 3 keV. Practically, however, all the sputtered atoms originate from the two outermost atom layers. From the energy spectra obtained for Cu and Ni atoms sputtered from a Cu0.5Ni0.5 alloy, the surface binding energies of the alloying elements are found to be U(Cu)(Cu-Ni) = 3.28+/-0.13 eV and U(Ni)(Cu-Ni) = 3.97+/-0.17 eV. The power-law parameter derived for 1 keV Ar+ sputtering is m = 0.05. After the collisional phase, the alloy surface is no longer atomically smooth, and noticeable compositional alteration occurs in the outer few atom layers. C1 ODENSE TEKNIKUM,DK-5230 ODENSE M,DENMARK. RP LAM, NQ (reprint author), ARGONNE NATL LAB,MSD 212,ARGONNE,IL 60439, USA. NR 58 TC 12 Z9 12 U1 2 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 1992 VL 71 IS 4 BP 371 EP 380 DI 10.1016/0168-583X(92)95353-S PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JR721 UT WOS:A1992JR72100003 ER PT J AU FILIPPONE, WL MOREL, JE WALTERS, WF AF FILIPPONE, WL MOREL, JE WALTERS, WF TI AN EXTENDED 1ST COLLISION SOURCE METHOD FOR ELECTRON-BEAM SOURCE PROBLEMS SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID TRANSPORT-EQUATION; SN; BALANCE AB Beam source problems are difficult to treat numerically because of the associated singularities in angle and space. For electrons, conventional first collision source techniques offer little help because the cross sections are so large and anisotropic that the first collision source and original source are not very different. By extending the definition of the uncollided flux to include particles that have not deviated significantly from the original beam direction, an extended first collision source is obtained that is smooth enough for use in S(N) codes. Through the use of effective cross sections, the extended first collision source is determined using standard first collision source techniques. The effective cross sections model electron transport with a reduced number of collisions, but larger deflections per collision. These cross sections are generated using a brute-force S(N) solution of the space-independent Spencer-Lewis equation on a restricted cone of directions, centered about the beam direction. Several sample calculations are given. C1 LOS ALAMOS NATL LAB,DIV APPL THEORET PHYS,LOS ALAMOS,NM 87545. RP FILIPPONE, WL (reprint author), UNIV ARIZONA,DEPT NUCL & ENERGY ENGN,TUCSON,AZ 85721, USA. NR 16 TC 4 Z9 4 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 1992 VL 112 IS 1 BP 1 EP 15 PG 15 WC Nuclear Science & Technology SC Nuclear Science & Technology GA JN063 UT WOS:A1992JN06300001 ER PT J AU AMIAN, WB BYRD, RC GOULDING, CA MEIER, MM MORGAN, GL MOSS, CE CLARK, DA AF AMIAN, WB BYRD, RC GOULDING, CA MEIER, MM MORGAN, GL MOSS, CE CLARK, DA TI DIFFERENTIAL NEUTRON-PRODUCTION CROSS-SECTIONS FOR 800-MEV PROTONS SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID STOPPING-LENGTH TARGETS; YIELDS AB Differential (p,xn) cross sections are measured for 800-MeV protons incident on thin targets of depleted uranium and of natural beryllium, boron, carbon, nitrogen, oxygen, aluminum, iron, cadmium, tungsten, and lead. Measurements for neutron energies from 0.3 to 800 MeV are made at angles of 30, 60, 120, and 150 deg. Time-of-flight techniques are used to determine the neutron energy spectra, and particular effort is made to identify and discriminate against background contributions. Comparisons of the experimental data with calculations using the high-energy transport code (HETC) intranuclear-cascade evaporation model show good agreement for the heaviest elements (tungsten, lead, and uranium), but significant discrepancies exist for the light elements, especially in the evaporation region. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP AMIAN, WB (reprint author), FORSCHUNGSZENTRUM JULICH GMBH,W-5170 JULICH,GERMANY. NR 19 TC 65 Z9 67 U1 2 U2 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 1992 VL 112 IS 1 BP 78 EP 86 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA JN063 UT WOS:A1992JN06300007 ER PT J AU BAUER, TH BRAID, TH SCHLEISIEK, K AF BAUER, TH BRAID, TH SCHLEISIEK, K TI QUANTITATIVE STUDIES OF SEVERE FUEL DAMAGE USING DELAYED NEUTRON DATA SO NUCLEAR TECHNOLOGY LA English DT Article DE DELAYED NEUTRON ANALYSIS; LMR FUEL DAMAGE; INPILE EXPERIMENTS AB A technique is presented to quantify fuel damage in a liquid-metal reactor through fast-running computer analysis of delayed neutron data, suitable for analysis of both small-scale in-pile experiments and full-scale plants. Validating analyses are described for five in-pile severe accident simulations performed within the Sodium Loop Safety Facility and Mol-7C test programs. Comparison is made of measured and calculated amounts of fuel damage. C1 KERNFORSCHUNGSZENTRUM KARLSRUHE,INST REAKTORENTWICKLUNG,SAFETY INSTRUMENTAT GRP,W-7500 KARLSRUHE,GERMANY. RP BAUER, TH (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1992 VL 99 IS 3 BP 343 EP 350 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA JK469 UT WOS:A1992JK46900008 ER PT J AU BOHL, WR WILHELM, D AF BOHL, WR WILHELM, D TI THE ADVANCED FLUID-DYNAMICS MODEL PROGRAM - SCOPE AND ACCOMPLISHMENT SO NUCLEAR TECHNOLOGY LA English DT Article DE SEVERE ACCIDENT CODES; LIQUID-METAL REACTORS; 3-VELOCITY-FIELD MODELS AB The origins and goals of the advanced fluid dynamics model (AFDM) program are described, and the models, algorithm, and coding used in the resulting AFDM computer program are summarized. Two boiling pool calculations are presented, the first of an experiment with volume-heated water, the second of a sample fuel/steel pool that is compared with a similar SIMMER-II calculation. A subjective assessment of the AFDM developments is given. It is concluded that a future severe accident code development program might be more oriented toward identification of generic or typical accident sequences rather than attempting to address all uncertainties. C1 KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,W-7500 KARLSRUHE 1,GERMANY. RP BOHL, WR (reprint author), LOS ALAMOS NATL LAB,ADV REACTOR SAFETY GRP,LOS ALAMOS,NM 87545, USA. NR 14 TC 3 Z9 3 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1992 VL 99 IS 3 BP 366 EP 373 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA JK469 UT WOS:A1992JK46900010 ER PT J AU TZANOS, CP AF TZANOS, CP TI HIGHER-ORDER DIFFERENCING METHOD WITH A MULTIGRID APPROACH FOR THE SOLUTION OF THE INCOMPRESSIBLE-FLOW EQUATIONS AT HIGH REYNOLDS-NUMBERS SO NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS LA English DT Article ID NAVIER-STOKES EQUATIONS AB A higher-order differencing method was recently proposed for the convection-diffusion equation, which even with a coarse mesh gives oscillation-free solutions that are far more "curate than those of the upwind scheme. In this subsequent work, the performance of this method was investigated in conjunction with the performance of different iterative solvers for the solution of the Navier-Stokes equations in the vorticity-streamfunction formulation for incompressible flow at high Reynolds numbers. Flow in a square cavity with a moving lid was chosen as a model problem. Solvers that performed well at low Re numbers either failed to converge or had a computationally prohibitive convergence rate at high Re numbers. The additive correction method of Settari and Aziz and an iterative incomplete lower and upper (ILU) solver were used in a multigrid approach that performed well in the whole range of Re numbers considered (from 1000 to 10,000) and for uniform as well as nonuniform grids. At high Re numbers, point or line Gauss-Seidel solvers converged with uniform grids, but failed to converge with nonuniform grids. The predictions of the higher-order differencing scheme used in this work agree very well with those of Ghia et al., which were used as a benchmark. The computation time of the higher-order method was only 15% longer than that of the first-order upwind scheme. This work demonstrates the effectiveness of the combination of the higher-order differencing scheme with a multigrid approach to give accurate solutions of the Navier-Stokes equations at high Re numbers. RP ARGONNE NATL LAB, 9700 S CASS AVE, BLDG 208, ARGONNE, IL 60439 USA. NR 12 TC 11 Z9 11 U1 0 U2 1 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1040-7790 EI 1521-0626 J9 NUMER HEAT TR B-FUND JI Numer Heat Tranf. B-Fundam. PD SEP-OCT PY 1992 VL 22 IS 2 BP 179 EP 198 DI 10.1080/10407799208944978 PG 20 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA JQ141 UT WOS:A1992JQ14100005 ER PT J AU XUE, SS AF XUE, SS TI MASS GENERATION IN NON-ABELIAN CHIRAL-GAUGE THEORY IN 4 DIMENSIONS SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS LA English DT Article ID DYNAMICAL SYMMETRY-BREAKING; TOP-QUARK MASS; SCHWINGER MODEL; LATTICE; ANOMALIES; FERMION; REGULARIZATION; NONINVARIANCE; NEUTRINOS; ABSENCE AB The origin of massive gauge bosons in the standard electroweak theory is suggested in the light of the fact that gauge symmetry cannot be maintained by quantization and renormalization procedures even though the anomalies of the system are eliminated by its fermion content. Gauge boson masses are related to fermion masses and the mass ratio M(W)/M(Z) = cos theta(W) is guaranteed. We present the discussions of the gauge symmetry breakdown of a SU(N) chiral-gauge theory in four dimensions and mass generation for gauge bosons. The renormalizability and unitarity of such a massive gauge theory are discussed. C1 BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. RP XUE, SS (reprint author), INFN, SEZ MILANO, VIA CELORIA 16, MILAN, ITALY. NR 43 TC 2 Z9 2 U1 0 U2 0 PU EDITRICE COMPOSITORI BOLOGNA PI BOLOGNA PA VIA STALINGRADO 97/2, I-40128 BOLOGNA, ITALY SN 1124-1861 J9 NUOVO CIMENTO A JI Nuovo Cimento Soc. Ital. Fis. A-Nucl. Part. Fields PD SEP PY 1992 VL 105 IS 9 BP 1225 EP 1245 DI 10.1007/BF02730998 PG 21 WC Physics, Particles & Fields SC Physics GA KB623 UT WOS:A1992KB62300001 ER PT J AU DONGARRA, JJ VANDEGEIJN, RA AF DONGARRA, JJ VANDEGEIJN, RA TI REDUCTION TO CONDENSED FORM FOR THE EIGENVALUE PROBLEM ON DISTRIBUTED MEMORY ARCHITECTURES SO PARALLEL COMPUTING LA English DT Article DE EIGENVALUE PROBLEM; LINEAR ALGEBRA; LAPACK; DISTRIBUTED MEMORY ARCHITECTURE ID LINEAR ALGEBRA SUBPROGRAMS; MULTIPROCESSOR; SET AB In this paper, we describe a parallel implementation for the reduction of general and symmetric matrices to Hessenberg and tridiagonal form, respectively. The methods are based on LAPACK sequential codes and use a panel-wrapped mapping of matrices to nodes. Results from experiments on the Intel Touchstone Delta are given. C1 OAK RIDGE NATL LAB,MATH SCI SECT,OAK RIDGE,TN 37831. UNIV TEXAS,DEPT COMP SCI,AUSTIN,TX 78712. RP DONGARRA, JJ (reprint author), UNIV TENNESSEE,DEPT COMP SCI,KNOXVILLE,TN 37996, USA. RI Dongarra, Jack/E-3987-2014 NR 13 TC 28 Z9 28 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8191 J9 PARALLEL COMPUT JI Parallel Comput. PD SEP PY 1992 VL 18 IS 9 BP 973 EP 982 DI 10.1016/0167-8191(92)90011-U PG 10 WC Computer Science, Theory & Methods SC Computer Science GA JX814 UT WOS:A1992JX81400002 ER PT J AU WRIGHT, AF DAW, MS FONG, CY AF WRIGHT, AF DAW, MS FONG, CY TI THEORETICAL INVESTIGATION OF (111)-STACKING FAULTS IN ALUMINUM SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID STACKING-FAULTS; PLANAR DEFECTS; AL; ENERGIES; PSEUDOPOTENTIALS; METALS; SOLIDS; TWIN AB We have investigated (111) stacking faults in aluminium using the Kohn Sham formulation of density-functional theory (DFT) along with plane-wave expansions for the Kohn-Sham functions and pseudopotentials to describe the interactions between the Kohn-Sham functions and the ions. We find that the energies of the intrinsic, extrinsic and twin stacking faults are 161, 151 and 74 mJ m-2 respectively. These values are in reasonable agreement both with estimates based on experimental observations and with values obtained from previous calculations also based on DFT. In addition, we have considered relaxations of the atoms within the stacking-fault region and find that this has a negligible effect on the stacking-fault energies. C1 UNIV CALIF DAVIS, DEPT PHYS, DAVIS, CA 95616 USA. RP SANDIA NATL LABS, LIVERMORE, CA 94550 USA. NR 34 TC 25 Z9 25 U1 1 U2 6 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD SEP PY 1992 VL 66 IS 3 BP 387 EP 404 PG 18 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA JM685 UT WOS:A1992JM68500005 ER PT J AU ZHU, YM SUENAGA, M AF ZHU, YM SUENAGA, M TI TWINNING DISLOCATIONS IN YBA2CU3O7-DELTA SUPERCONDUCTOR SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID GRAIN-BOUNDARY DISLOCATIONS; TRANSMISSION ELECTRON-MICROSCOPY; HIGH-TC SUPERCONDUCTORS; BA-CU-O; SINGLE-CRYSTALS; THIN-FILMS; YBA2(CU1-XFEX)3O7-DELTA; DIFFRACTION; LATTICE; TRANSFORMATION AB Structural images of twinning steps associated with an \a-b\[-110BAR] twinning dislocation at a (110) twin boundary of YBa2Cu3O7-delta (delta almost-equal-to 0.0) were observed for the first time. High-resolution electron microscopy (HREM) studies suggest that there are two types of twin boundaries: one with a lattice translation along the boundary for fully oxygenated YBa2Cu3O7-delta, and the other, without a lattice translation, for the oxygen-deficient one. High resolution in situ experiments indicate that the structure of the twin boundary changes from one type to the other under electron beam irradiation. Dislocations were observed from regions where the two types of twin boundary merge together. Dislocation models are proposed for interpreting the kinetics of the transition of the boundary structures. The geometry of the twin boundary and twinning dislocation using the concepts of coincidence site lattice (CSL) and of displacement shift complete lattice (DSCL) is also demonstrated. RP ZHU, YM (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. NR 46 TC 31 Z9 31 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD SEP PY 1992 VL 66 IS 3 BP 457 EP 471 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA JM685 UT WOS:A1992JM68500010 ER PT J AU PEARSON, JE AF PEARSON, JE TI PATTERN-FORMATION IN A (2+1)-SPECIES ACTIVATOR INHIBITOR IMMOBILIZER SYSTEM SO PHYSICA A LA English DT Article; Proceedings Paper CT NATO ADVANCED RESEARCH WORKSHOP AND EUROPEAN PHYSICAL SOC LIQUID STATE CONF : NONEQUILIBRIUM CHEMICAL PHYSICS CY DEC 02-05, 1991 CL FREE UNIV BRUSSELS, BRUSSELS, BELGIUM SP NATO, EUROPEAN PHYS SOC HO FREE UNIV BRUSSELS ID MALONIC-ACID AB The necessary and sufficient conditions for a Turing instability in a (2 + 1)-component reaction-diffusion system are derived. The 2-component subsystem consists of an arbitrary activator-inhibitor system in which the activator and the inhibitor diffuse at identical rates. The activator reacts with an immobile substrate to form an immobile complex which does not diffuse. It is found that the critical wavenumber and the location of the instability in parameter space are independent of the initial substrate concentration. As a special case, the (2 + 1)-variable activator-inhibitor-immobilizer system can be reduced to an activator-inhibitor system in which the activator diffuses more slowly than the inhibitor. This occurs when the time scales in the system satisfy certain constraints. The general results are applied to a (2 + 1)-variable model of the chlorite-iodide-starch reaction recently proposed by Epstein and Lengyel to explain the experimental observation of Turing patterns in a related system. I find an intrinsic wavelength which is within a factor of two of the experimentally observed wavelength, but the necessary conditions for the (2 + 1)-variable system to reduce to a two-variable activator inhibitor system with rescaled diffusion coefficients are not satisfied. RP PEARSON, JE (reprint author), LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545, USA. NR 15 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD SEP 1 PY 1992 VL 188 IS 1-3 BP 178 EP 189 DI 10.1016/0378-4371(92)90264-Q PG 12 WC Physics, Multidisciplinary SC Physics GA JP091 UT WOS:A1992JP09100019 ER PT J AU SMEDSKJAER, LC BANSIL, A PAULIKAS, AP VEAL, BW LEGNINI, DG BAILEY, KG AF SMEDSKJAER, LC BANSIL, A PAULIKAS, AP VEAL, BW LEGNINI, DG BAILEY, KG TI A TEMPERATURE-DEPENDENT POSITRON-ANNIHILATION 2D-ACAR STUDY OF AN INSULATING YBA2CU3O6.2 SINGLE-CRYSTAL SO PHYSICA C LA English DT Article ID FERMI-SURFACE; ELECTRONIC-STRUCTURE; MOMENTUM DENSITY; 2D ACAR; YBA2CU3O7-DELTA AB We present and discuss 2D-ACAR positron annihilation spectra in the c-axis projection from an insulating YBa2Cu3O6.2 single crystal at 35 and 300 K, and compare and contrast the results with the corresponding spectra from an untwinned metallic YBA2Cu3O6.9 specimen. The effects of temperature on the 2D-ACAR in the metal and the insulator are similar in size but opposite in sign, i.e. the spectra become more peaked with increasing temperature in the insulator but less so in the metal. The metal/insulator transition is shown to induce substantial changes in the 2D-ACAR, the spectrum in the insulator being more peaked compared to the metal near p = 0. The anisotropic spectrum in the insulator does not contain the characteristic signature of the Cu-O-chain-related ridge Fermi surface, but shows a new cross-like feature with arms extending along the GAMMA-S directions. We have examined the insulator spectrum regarding possible Fermi surface signatures and found none. C1 NORTHEASTERN UNIV,DEPT PHYS,BOSTON,MA 02115. RP SMEDSKJAER, LC (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 52 TC 2 Z9 2 U1 1 U2 1 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 1992 VL 199 IS 3-4 BP 393 EP 402 DI 10.1016/0921-4534(92)90426-D PG 10 WC Physics, Applied SC Physics GA JL831 UT WOS:A1992JL83100022 ER PT J AU MUENCHAUSEN, RE HAWLEY, M FOLTYN, SR WU, XD DYE, RC GARZON, FH SKOFRONICK, GL CARIM, AH AF MUENCHAUSEN, RE HAWLEY, M FOLTYN, SR WU, XD DYE, RC GARZON, FH SKOFRONICK, GL CARIM, AH TI ISLAND STRUCTURE AND GROWTH OF PULSED LASER DEPOSITED YBA2CU3O7-X SUPERCONDUCTING THIN-FILMS SO PHYSICA C LA English DT Article ID SCANNING TUNNELING MICROSCOPY; DISLOCATIONS; AU(111); AG AB Surface and grain topography of YBa2Cu3O7-x epitaxial thin films grown on (100) NdGaO3 using pulsed laser deposition as been studied using atomic force and scanning tunneling microscopy under ambient conditions. X-ray diffraction and transmission electron microscopy results support the force microscopy findings. Parametric studies of the effect of substrate temperature, annealing time and deposition rate were performed on 33 nm thick films. The observed island re-orientation as a function of time-at-temperature suggest that under our epitaxial growth conditions, the nuclei ripening time can be on the order of seconds. Implications for the observed island structure on transport and microwave surface resistance properties are briefly discussed. C1 PENN STATE UNIV,DEPT MAT SCI & ENGN,UNIVERSITY PK,PA 16802. RP MUENCHAUSEN, RE (reprint author), LOS ALAMOS NATL LAB,CTR SUPERCOND TECHNOL,LOS ALAMOS,NM 87545, USA. NR 19 TC 13 Z9 13 U1 0 U2 1 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 1992 VL 199 IS 3-4 BP 445 EP 449 DI 10.1016/0921-4534(92)90432-C PG 5 WC Physics, Applied SC Physics GA JL831 UT WOS:A1992JL83100028 ER PT J AU HOLZSCHEITER, MH AF HOLZSCHEITER, MH TI SLOWING DOWN AND TRAPPING OF MEV ANTIPROTONS SO PHYSICA SCRIPTA LA English DT Article; Proceedings Paper CT WORKSHOP ON PHYSICS WITH PENNING TRAPS CY JUN 29-JUL 01, 1991 CL LERTORPET, SWEDEN AB The first step necessary for a variety of proposed experiments with ultra-low energy antiprotons and antihydrogen is the capture of a sufficiently large number of antiprotons. We propose a combination of the degrading foil technique and a large scale Penning trap as a means to accomplish this goal. Measurements of the degrading of protons and antiprotons from MeV to several tens of keV have been performed at LEAR and at the Ion-Beam Facility in Los Alamos. The experimental set-up is described and results are given for the slowing down process of 105 MeV/c protons and antiprotons. The application of these results to the capture of antiprotons into a Penning trap are discussed and the design of a deep-well catching trap is presented. RP HOLZSCHEITER, MH (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 15 TC 16 Z9 16 U1 0 U2 1 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 1992 VL 46 IS 3 BP 272 EP 277 DI 10.1088/0031-8949/46/3/011 PG 6 WC Physics, Multidisciplinary SC Physics GA JH436 UT WOS:A1992JH43600012 ER PT J AU OLBRIGHT, GR JEWELL, JL BRYAN, RP BRENNAN, TM AF OLBRIGHT, GR JEWELL, JL BRYAN, RP BRENNAN, TM TI SURFACE-EMITTING LASER LOGIC SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article ID PHOTOTRANSISTORS; ARRAY AB In the future optoelectronic integrated circuits (OEICs) are destined to evolve into sophisticated functional circuitry upon which a multiplicity of applications will be based such as: optical communications, optical interconnects, optical computing, optical memory, laser printing and scanning, visual displays, pattern recognition, and neral networks. This evolution of OEICs involves the integration of phototransmitters (semiconductor lasers and light-emitting diodes), photoreceivers (photodetectors and phototransistors), spatial-light modulators transistors (bipolar and field-effect), diodes, resistors and capacitors, and micro-optic components (e.g. micro lenses). Our efforts to date and future directions are described which are concentrated on the integration of vertical-cavity surface-emitting laser diodes (VCSELs) with transistors, photoreceivers and micro-optic components. VCSELs, which may be patterned in high densities (over a million in a cm2) and emit light perpendicular to the plane of the substrate, have an ideal light-emitting geometry for the above-mentioned applications and for integration with micro-optic components. Our effects to develop monolithic surfaCe-Emitting Laser Logic devices are described which are referred to as CELLs consisting of phototransistors, current controlled bipolar transistors. and voltage-controlled field-effect transistors integrated with a VCSEL to form optically and electrically addressable photonic switching devices having high contrast. included are reports of recent progress in decreasing VCSEL series resistance and therefore operating voltage, and an optically-pumped visible-emitting (657 nm) VCSEL. Also discussed are the integration of micro-optics with VCSELs. Finally combinations of OEIC components and subassemblies and their applications to several of the above-mentioned photonic switching applications are described. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP OLBRIGHT, GR (reprint author), PHOTON RES INC,350 INTERLOCKEN PKWY,SUITE 245,BROOMFIELD,CO 80021, USA. NR 19 TC 0 Z9 0 U1 0 U2 2 PU AKADEMIE 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 1992 VL 173 IS 1 BP 407 EP 421 DI 10.1002/pssb.2221730142 PG 15 WC Physics, Condensed Matter SC Physics GA JR284 UT WOS:A1992JR28400041 ER PT J AU YANG, XZ BURGDORFER, J AF YANG, XZ BURGDORFER, J TI PARAMETRIC CORRELATIONS AND DIFFUSION IN QUANTUM SPECTRA SO PHYSICAL REVIEW A LA English DT Article ID MULTIPLE AVOIDED CROSSINGS; STATISTICAL PROPERTIES; ENERGY-LEVELS; SEMICLASSICAL THEORY; GLASS-TRANSITION; CHAOTIC SYSTEMS; DISTRIBUTIONS; DYNAMICS AB The evolution of the quantum spectrum as the function of a control parameter can be mapped onto the molecular dynamics of a classical many-body system. This approach is used to study the parametric motion of energy levels in classically mostly regular and in mostly chaotic regimes. The parametric energy-level dynamics is described in terms of the velocity autocorrelation function and the friction kernel of a disordered many-body system. We show that the parametric dynamics is sensitively dependent on the underlying classical dynamics, and therefore provide new measures of quantum chaology. The transition from classically regular to chaotic motion manifests itself in the disappearance of parametric diffusion. Semiclassical arguments give analytic approximations for the spectrum of the velocity auto-correlation function, and these approximations are found to be consistent with numerical calculations for the vibronic motion of a triatomic molecule. We compare these autocorrelation functions with those found in gases, liquids, and glasses. C1 UNIV TENNESSEE, DEPT PHYS, KNOXVILLE, TN 37996 USA. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. RP HARVARD SMITHSONIAN CTR ASTROPHYS, INST THEORET ATOM & MOLEC PHYS, CAMBRIDGE, MA 02138 USA. NR 36 TC 11 Z9 11 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD SEP 1 PY 1992 VL 46 IS 5 BP 2295 EP 2303 DI 10.1103/PhysRevA.46.2295 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300019 ER PT J AU VEGH, L BECKER, RL AF VEGH, L BECKER, RL TI SELECTIVE-POPULATION OF IONIC STATES PRODUCED IN PHOTOIONIZATION BY LINEARLY POLARIZED-LIGHT SO PHYSICAL REVIEW A LA English DT Article ID ELECTRON-IMPACT IONIZATION AB The elements of the statistical tensors describing the anisotropy of an ionic state are calculated for photoionization induced by linearly polarized light. Depending on the orbital angular momentum of the ionized subshell, there are some special photoelectron emission angles that correspond to selective population of a magnetic sublevel. We point out that, if only one magnetic substate is populated, then the elements of the statistical tensor depend only on a geometric factor that is independent of the orbital angular momentum of the photoelectron. C1 UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. RP VEGH, L (reprint author), OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831, USA. NR 8 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 1 PY 1992 VL 46 IS 5 BP 2445 EP 2448 DI 10.1103/PhysRevA.46.2445 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300034 ER PT J AU VANDERMEULEN, P KRAUSE, MO CALDWELL, CD WHITFIELD, SB DELANGE, CA AF VANDERMEULEN, P KRAUSE, MO CALDWELL, CD WHITFIELD, SB DELANGE, CA TI ANGLE-RESOLVED PHOTOELECTRON SPECTROMETRY OF ATOMIC CHLORINE USING SYNCHROTRON RADIATION SO PHYSICAL REVIEW A LA English DT Article ID PHOTOIONIZATION CROSS-SECTIONS; QUANTUM-DEFECT THEORY; OPEN-SHELL ATOMS; PHOTO-IONIZATION; ANGULAR-DISTRIBUTIONS; RESONANCE STRUCTURE; HALOGEN ATOMS; SPECTROSCOPY; SPECTRA; OXYGEN AB Using synchrotron-radiation-based angle-resolved photoelectron spectrometry, the Cl 3s3p5(P-3(2)o,1,0)np and 3s3p5(P-1(1)o)np autoionizing Rydberg series are studied by monitoring the relative partial photoionization cross sections and asymmetry parameters of the 3p-1 P-3(2,1,0)e, D-1(2)e, and S-1(0)e ionic states between 21.75 and 27.75 eV. The Rydberg series converging upon the 3s-1 P-3(2)o, P-3(1)o, and P-3(0)o, thresholds are clearly resolved. Rydberg levels up to n = 14 can be identified in the (P-3(2,1,0)o)np series, while the (P-1(1)o)np Rydberg series can be observed up to n = 10. The relative partial cross sections are placed on an absolute scale using previous data obtained with an electron spectroscopy modulation method. The present experimental results for the Cl (P-3(2,1,0)o)np and (P-1(1)o)np Rydberg series are compared with those of the Ar 3s3p6(S-2(1/2)e)np series, and with theoretical results of a nonrelativistic many-body perturbation theory calculation. The P-3(2,1,0)o and P-1(1)o ionization thresholds obtained from the Rydberg series agree very well with the ionization limits calculated on the basis of the Cl II spectrum, and with the ionization energies determined from a 3s-1 photoelectron spectrum. Autoionization phenomena due to 3s(2)3p5-->3s(2)3p3nln'l' two-electron excitations are observed in the P-1(1)o resonance region. C1 UNIV AMSTERDAM, DEPT PHYS CHEM, 1018 WS AMSTERDAM, NETHERLANDS. UNIV CENT FLORIDA, DEPT PHYS, ORLANDO, FL 32816 USA. RP OAK RIDGE NATL LAB, DIV CHEM, POB 2008, OAK RIDGE, TN 37831 USA. NR 75 TC 34 Z9 34 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD SEP 1 PY 1992 VL 46 IS 5 BP 2468 EP 2485 DI 10.1103/PhysRevA.46.2468 PG 18 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300037 ER PT J AU BRAUNER, M MACEK, JH AF BRAUNER, M MACEK, JH TI ION-IMPACT IONIZATION OF HE TARGETS SO PHYSICAL REVIEW A LA English DT Article ID POTENTIAL BORN APPROXIMATION; IMPULSE APPROXIMATION; ELECTRON-CAPTURE; CHARGE-EXCHANGE; ATOMIC SYSTEMS; COLLISIONS; CONTINUUM AB We calculate double-differential cross sections for the impact ionization of He targets by 1.5-MeV H+ and 28.5-MeV F9+ ions using the distorted-wave strong-potential Born approximation. The theory is compared with the experimental electron spectrum. Both theory and experiment show the low-energy electron distribution, the electron capture to the continuum cusp, and the binary-encounter peak. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP BRAUNER, M (reprint author), UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996, USA. NR 35 TC 29 Z9 29 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 1 PY 1992 VL 46 IS 5 BP 2519 EP 2531 DI 10.1103/PhysRevA.46.2519 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300042 ER PT J AU KIMURA, M KRAJCARBRONIC, I TENG, TH INOKUTI, M AF KIMURA, M KRAJCARBRONIC, I TENG, TH INOKUTI, M TI TIME-DEPENDENT ASPECTS OF ELECTRON DEGRADATION - SUBEXCITATION ELECTRONS IN O2-N2 MIXTURES SO PHYSICAL REVIEW A LA English DT Article ID INITIAL PRODUCTS; CROSS-SECTIONS; COLLISIONS; MOLECULES; NITROGEN; PHOTONS; YIELDS; OXYGEN AB The time evolution of subexcitation electron degradation spectra in N2-O2 mixtures has been investigated by using the time-dependent Spencer-Fano equation. The calculations were performed for low-energy electrons whose energies fall below 6 2eV. The present study showed that strong resonances in vibrational excitation channels in N2 and O2 greatly affect the spectrum at early times, and that the stationary spectrum (time --> infinity) is more readily achieved in energy regions with a large stopping power. The evolution of the characteristic features of spectra of pure N2 and O2 and their presence to various degrees in mixtures are also discussed. C1 UNIV CALIF BERKELEY,BERKELEY,CA 94720. RP KIMURA, M (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 9 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 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP 1 PY 1992 VL 46 IS 5 BP 2532 EP 2538 DI 10.1103/PhysRevA.46.2532 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300043 ER PT J AU SIGMUND, P AF SIGMUND, P TI SCALING LAWS GOVERNING THE MULTIPLE-SCATTERING OF DIATOMIC-MOLECULES UNDER COULOMB EXPLOSION SO PHYSICAL REVIEW A LA English DT Article ID THIN FOILS; IONS; PASSAGE; REGION AB The trajectories of fast molecules during and after penetration through foils are governed by Coulomb explosion and distorted by multiple scattering and other penetration phenomena. A scattering event may cause the energy available for Coulomb explosion to increase or decrease, and angular momentum may be transferred to the molecule. Because of continuing Coulomb explosion inside and outside the target foil, the transmission pattern recorded at a detector far away from the target is not just a linear superposition of Coulomb explosion and multiple scattering. The velocity distribution of an initially monochromatic and well-collimated, but randomly oriented, beam of molecular ions is governed by a generalization of the standard Bothe-Landau integral that governs the multiple scattering of atomic ions. Emphasis has been laid on the distribution in relative velocity and, in particular, relative energy. The statistical distributions governing the longitudinal motion (i.e., the relative motion along the molecular axis) and the rotational motion can be scaled into standard multiple-scattering distributions of atomic ions. The two scaling laws are very different. For thin target foils, the significance of rotational energy transfer is enhanced by an order of magnitude compared to switched-off Coulomb explosion. A distribution for the total relative energy (i.e., longitudinal plus rotational motion) has also been found, but its scaling behavior is more complex. Explicit examples given for all three distributions refer to power-law scattering. As a first approximation, scattering events undergone by the two atoms in the molecule were assumed uncorrelated. A separate section has been devoted to an estimate of the effect of impact-parameter correlation on the multiple scattering of penetrating molecules. That effect is by and large unrelated to Coulomb explosion, but some attention is indicated since it is an unavoidable feature in all scattering phenomena involving molecular ions. C1 ARGONNE NATL LAB, DIV PHYS, ARGONNE, IL 60439 USA. RP ODENSE UNIV, DEPT PHYS, DK-5230 ODENSE, DENMARK. RI Sigmund, Peter/B-1115-2012 OI Sigmund, Peter/0000-0002-2959-1305 NR 26 TC 9 Z9 9 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD SEP 1 PY 1992 VL 46 IS 5 BP 2596 EP 2606 DI 10.1103/PhysRevA.46.2596 PG 11 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300051 ER PT J AU LHUILLIER, A BALCOU, P CANDEL, S SCHAFER, KJ KULANDER, KC AF LHUILLIER, A BALCOU, P CANDEL, S SCHAFER, KJ KULANDER, KC TI CALCULATIONS OF HIGH-ORDER HARMONIC-GENERATION PROCESSES IN XENON AT 1064 NM SO PHYSICAL REVIEW A LA English DT Article ID MULTIPHOTON IONIZATION; RARE-GASES; OPTICAL HARMONICS; LASER-RADIATION; ATOMIC-HYDROGEN; INTENSE PULSES; FIELD; SCATTERING; MODEL AB We perform detailed calculations of harmonic conversion in a 15-Torr jet of xenon into which a 1064-nm-wavelength 36-ps-pulse-width laser has been tightly focused, so that the peak intensity ranges from 5X10(12) to 5X10(13) W cm-2. The single-atom emission rates are obtained by integrating the time-dependent Schrodinger equation. We employ an improved atomic model which includes excitation and ionization through states with both low-lying ionic cores. The propagation equations are solved using a general and efficient finite-difference technique. Excellent agreement with experimental data is obtained. We consider the effect of the defocusing of the pump beam by the free electrons in the saturation regime, and find it to be small for the conditions studied here. The spatial, temporal, and spectral profiles of the harmonic emission are presented. Significant blueshifts of the harmonics' spectral line shapes are observed in the saturation regime. Finally, using model polarizations, we discuss how the harmonic fields build up in the nonlinear medium, through a series of interferences. It allows us to understand why efficient phase matching can be achieved in a strong-field regime for the laser-atom interaction. C1 ECOLE CENT PARIS,ENERGET MOLEC & MACROSCOPIQUE COMBUST LAB,CHATENAY MALABRY,FRANCE. LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550. RP LHUILLIER, A (reprint author), CENS,SERV PHOTONS ATOMES & MOLEC,F-91191 GIF SUR YVETTE,FRANCE. RI L'Huillier, Anne/P-4379-2015 OI L'Huillier, Anne/0000-0002-1335-4022 NR 40 TC 194 Z9 194 U1 1 U2 9 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 1 PY 1992 VL 46 IS 5 BP 2778 EP 2790 DI 10.1103/PhysRevA.46.2778 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300071 ER PT J AU JOHNSON, WR CHENG, KT AF JOHNSON, WR CHENG, KT TI RELAXED RELATIVISTIC RANDOM-PHASE-APPROXIMATION CALCULATIONS OF PHOTOIONIZATION AMPLITUDES AND PHASES FOR THE 4D SUBSHELL OF XENON SO PHYSICAL REVIEW A LA English DT Note ID PHOTO-IONIZATION; CROSS-SECTION; XE; PHOTOIONISATION; BA AB Calculations of photoionization amplitudes and phases for the 4d subshell of xenon are carried out in the relativistic random-phase approximation for photon energies ranging from 80 to 140 eV. These calculations account for correlations within and between the 4d, 5s, and 5p subshells as well as relaxation of the 4d subshell. The resulting theoretical amplitudes are compared with a recent experimental measurement of photoionization amplitudes and phases for the 4d5/2 subshell at 94.5 eV. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP JOHNSON, WR (reprint author), UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556, USA. NR 15 TC 28 Z9 29 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 1 PY 1992 VL 46 IS 5 BP 2952 EP 2954 DI 10.1103/PhysRevA.46.2952 PG 3 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JM063 UT WOS:A1992JM06300090 ER PT J AU GEER, S HOLROYD, RA AF GEER, S HOLROYD, RA TI ELECTRON-THERMALIZATION LENGTHS AND TOTAL INITIAL-IONIZATION YIELDS IN TETRA-ALKYL LIQUIDS SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE AB Measurements of field-dependent ionization currents in nine tetra-alklyl liquids have been used to determine the average electron-thermalization lengths and total initial-ionization yields. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP GEER, S (reprint author), FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. NR 6 TC 5 Z9 5 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5043 EP 5046 DI 10.1103/PhysRevB.46.5043 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400001 ER PT J AU ASTA, M DEFONTAINE, D VANSCHILFGAARDE, M SLUITER, M METHFESSEL, M AF ASTA, M DEFONTAINE, D VANSCHILFGAARDE, M SLUITER, M METHFESSEL, M TI 1ST-PRINCIPLES PHASE-STABILITY STUDY OF FCC ALLOYS IN THE TI-AL SYSTEM SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION-METAL ALLOYS; EFFECTIVE CLUSTER INTERACTIONS; GROUND-STATE STRUCTURES; ORDERED BINARY-ALLOYS; ELECTRONIC-STRUCTURE; INTERMETALLIC COMPOUNDS; PAIRWISE INTERACTIONS; VARIATION FORMALISM; CRYSTAL-STRUCTURE; SOLID-SOLUTIONS AB We present the results of a first-principles study of the composition-temperature phase diagram for fcc-based Ti-Al alloys and the related structural and thermodynamic properties. In the approach taken in this study, local-density-functional theory is combined with the formalism of the cluster-variation method (CVM). In particular, the formation energy, bulk modulus, and atomic volume of metastable fcc Ti, fcc Al, and nine ordered fcc intermetallic Ti-Al compounds have been calculated using the full-potential linear-muffin-tin-orbital method. It is shown how the results of these calculations can be used to obtain a set of volume-dependent effective cluster interactions (ECI's) which parametrize the total energies of fcc-based Ti-Al alloys. We discuss in detail how these parameters can be used to determine formation energies, atomic volume, and bulk moduli for both ordered and disordered alloys, and as an example we calculate these properties for alloys containing random distributions of Ti and Al atoms as a function of composition. Furthermore, these ECI's are used in conjunction with the CVM to calculate the solid-state, fcc, composition-temperature phase diagram. C1 LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. SRI INT, MENLO PK, CA 94025 USA. LAWRENCE LIVERMORE NATL LAB, DIV CONDENSED MAT L268, LIVERMORE, CA 94550 USA. FRITZ HABER INST, W-1000 BERLIN 33, GERMANY. RP UNIV CALIF BERKELEY, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA. RI Sluiter, Marcel/E-6086-2010 OI Sluiter, Marcel/0000-0002-6514-4318 NR 71 TC 100 Z9 100 U1 1 U2 18 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 1992 VL 46 IS 9 BP 5055 EP 5072 DI 10.1103/PhysRevB.46.5055 PG 18 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400003 ER PT J AU GEHRING, PM CHOU, H SHAPIRO, SM HRILJAC, JA CHEN, DH TOULOUSE, J RYTZ, D BOATNER, LA AF GEHRING, PM CHOU, H SHAPIRO, SM HRILJAC, JA CHEN, DH TOULOUSE, J RYTZ, D BOATNER, LA TI DIPOLE-GLASS BEHAVIOR OF LIGHTLY DOPED KTA1-XNBXO3 SO PHYSICAL REVIEW B LA English DT Article ID PHASE-TRANSITIONS; SCATTERING; DYNAMICS; CRYSTAL; DEPENDENCE; PRESSURE; BATIO3; SIZE AB High-resolution x-ray diffraction measurements have been performed between 10 and 300 K on several single crystals of KTa1-xNbxO3 with x less-than-or-equal-to 0.157. Contrary to the published phase diagram, no deviation from cubic symmetry is seen for x less-than-or-equal-to 0.060. Instead, a low-temperature minimum in the cubic unit cell volume is observed at a temperature T(min) which increases monotonically for 0.012 less-than-or-equal-to x less-than-or-equal-to 0.060. Data for x=0.157, however, are consistent with the previously established sequence of structural transitions from cubic to tetragonal to orthorhombic to rhombohedral symmetries. We associate T(min) with the onset of a dipolar glass transition. In addition, a radial broadening of the linewidths is observed at T(min), indicating the presence of strain in the lattice. Powdering small pieces from these single crystals suppresses the unit cell minimum and stabilizes the cubic phase down to 10 K, even for x=0.157. C1 LEHIGH UNIV, DEPT PHYS, BETHLEHEM, PA 18015 USA. SANDOZ HUNINGUE SA, CTR RECH OPTOELECTR, F-68330 HUNINGUE, FRANCE. OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37830 USA. RP BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. RI Boatner, Lynn/I-6428-2013; OI Boatner, Lynn/0000-0002-0235-7594; Gehring, Peter/0000-0002-9236-2046 NR 24 TC 20 Z9 20 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5116 EP 5121 DI 10.1103/PhysRevB.46.5116 PG 6 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400010 ER PT J AU ERIKSSON, O WILLS, JM WALLACE, D AF ERIKSSON, O WILLS, JM WALLACE, D TI ELECTRONIC, QUASI-HARMONIC, AND ANHARMONIC ENTROPIES OF TRANSITION-METALS SO PHYSICAL REVIEW B LA English DT Article ID TRANSIENT INTERFEROMETRIC-TECHNIQUE; GROUP-IV METALS; THERMODYNAMIC PROPERTIES; THERMAL-EXPANSION; TEMPERATURE-DEPENDENCE; PHONON-DISPERSION; VIBRATIONAL-MODES; LATTICE-DYNAMICS; BCC PHASE; MOLYBDENUM AB For transition metals at temperatures to melting, the electronic entropy is calculated from linear muffin-tin orbital electronic densities of states (using both the atomic-sphere approximation as well as a full potential), the quasiharmonic entropy is calculated from neutron-scattering data, and the anharmonic entropy is then extracted from the measured entropy. The electronic entropy is large, and is strongly nonlinear in temperature, as a result of both the volume dependence and energy dependence of the electronic density of states. The anharmonic entropy is small and apparently negative for V, Nb, Ta, Pd, and Pt, but is large and positive for Cr, Mo, and W. For Ni, the anharmonic plus magnetic entropy is determined accurately, and the magnetic entropy is estimated. For Ti and Zr, the total lattice-dynamic entropy is accurately given by the quasiharmonic formula with temperature-dependent renormalized phonon frequencies, in both hcp and bcc phases. RP ERIKSSON, O (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 45 TC 57 Z9 57 U1 0 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5221 EP 5228 DI 10.1103/PhysRevB.46.5221 PG 8 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400021 ER PT J AU WALLACE, DC AF WALLACE, DC TI ANHARMONIC ENTROPY OF ALKALI-METALS SO PHYSICAL REVIEW B LA English DT Article AB The anharmonic entropy is extracted from the experimental total entropy at temperatures up to melting for Na, K, and Rb. The anharmonic entropy is less than or similar to 1% of the total entropy. When allowance is made for small constant errors in the data, the anharmonic entropy of these metals lies on a single curve; this curve is in qualitative agreement with earlier computer simulations for Na. The present results and the computer simulations suggest the failure of leading-order anharmonic perturbation theory. RP WALLACE, DC (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 12 TC 15 Z9 15 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5242 EP 5245 DI 10.1103/PhysRevB.46.5242 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400024 ER PT J AU TANG, CC STIRLING, WG LANDER, GH GIBBS, D HERZOG, W CARRA, P THOLE, BT MATTENBERGER, K VOGT, O AF TANG, CC STIRLING, WG LANDER, GH GIBBS, D HERZOG, W CARRA, P THOLE, BT MATTENBERGER, K VOGT, O TI RESONANT MAGNETIC-X-RAY SCATTERING IN A SERIES OF URANIUM-COMPOUNDS SO PHYSICAL REVIEW B LA English DT Article ID EXCHANGE SCATTERING; ABSORPTION-SPECTRA; POLARIZATION; HOLMIUM; STATE AB We report results of x-ray scattering experiments on the antiferromagnetic uranium compounds UO2, USb, and (U0.85Th0.15)Sb. The energy dependence of the x-ray scattering cross section is reported in the range 3.5-3.9 keV, which includes the M(IV) and M(V) absorption edges. The energy dependencies are very similar and well represented by atomic-resonance methodology. Differences occur in the ratio of intensities (branching ratio) of the two absorption edges, which are larger in UO2 than in the other materials. Ab initio calculations based on atomic physics suggest that such differences may arise from differing 5f-electron configurations. Unfortunately, we have not measured accurately the absorption coefficient over the two edges, so that our corrections to the intensities must be regarded as qualitative. This prevents a quantitative comparison between the observed and calculated branching ratios. Consistent with the calculated cross section, the magnetic scattering of the sigma-polarized incident beam is rotated to pi-polarization. No unusual effects were found at the M(IV) edge of Th in the pseudobinary compound. C1 SERC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND. COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,INST TRANSURANIUM ELEMENTS,W-7500 KARLSRUHE,GERMANY. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. UNIV GRONINGEN,CTR MAT SCI,DEPT CHEM PHYS,9747 AG GRONINGEN,NETHERLANDS. EUROPEAN SYNCHROTRON RADIAT FACIL,F-38043 GRENOBLE,FRANCE. SWISS FED INST TECHNOL,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND. RP TANG, CC (reprint author), UNIV KEELE,SCH PHYS SCI & ENGN,DEPT PHYS,KEELE ST5 5BG,STAFFS,ENGLAND. NR 32 TC 50 Z9 50 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5287 EP 5297 DI 10.1103/PhysRevB.46.5287 PG 11 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400030 ER PT J AU LANG, JC KYCIA, SW WANG, XD HARMON, BN GOLDMAN, AI BRANAGAN, DJ MCCALLUM, RW FINKELSTEIN, KD AF LANG, JC KYCIA, SW WANG, XD HARMON, BN GOLDMAN, AI BRANAGAN, DJ MCCALLUM, RW FINKELSTEIN, KD TI CIRCULAR MAGNETIC-X-RAY DICHROISM AT THE ERBIUM L(3)-EDGE SO PHYSICAL REVIEW B LA English DT Article ID ABSORPTION; SCATTERING; METAL AB The spin-dependent absorption of circularly polarized x rays at the L3 edge of Er has been studied in Er2Fe14B. Two distinct contributions, above and below the Fermi energy, are present. While they have been ascribed to dipolar and quadrupolar transitions to the empty 5d and 4f states, respectively, we find that the angular dependence of both features was well described as dipolar. The results are compared to a theoretical spectrum for Er metal. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT MAT SCI & ENGN,AMES,IA 50011. CORNELL UNIV,CORNELL HIGH ENERGY SYNCHROTRON SOURCE,ITHACA,NY 14853. CORNELL UNIV,DEPT APPL ENGN PHYS,ITHACA,NY 14853. RP LANG, JC (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 17 TC 37 Z9 37 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5298 EP 5302 DI 10.1103/PhysRevB.46.5298 PG 5 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400031 ER PT J AU LANDER, GH SHAPIRO, SM VETTIER, C DIANOUX, AJ AF LANDER, GH SHAPIRO, SM VETTIER, C DIANOUX, AJ TI OBSERVATION OF LOW-ENERGY MAGNETIC RESPONSE IN THE HEAVY-FERMION COMPOUND UBE(13) SO PHYSICAL REVIEW B LA English DT Article ID NEUTRON-SCATTERING MEASUREMENTS; MUON-SPIN-RESONANCE; ANTIFERROMAGNETIC CORRELATIONS; PHASE-DIAGRAM; SYSTEM UPT3; UBE13; FLUCTUATIONS; EXCITATIONS; (U,TH)BE13; URU2SI2 AB Inelastic-neutron-scattering experiments have been used to examine the low-frequency (< 2 meV) response of polycrystalline samples of the heavy-fermion UBe13. A quasielastic response with a characteristic linewidth of 1.5 meV for T > 1 K is found. Surprisingly we found no anomalous dependence of this response on q, the reduced reciprocal lattice vector. The strength of the response corresponds to approximately 60% of the bulk susceptibility, and it scales with the latter for 1.5 < T < 30 K. Taking into account earlier experiments the total response function for UBe13 thus contains two components, one with a linewidth of 1.5 meV and the other [A. 1. Goldman et al., Phys. Rev. B 33, 1627 (1986)] with a linewidth of approximately 13 meV. The weight is approximately evenly divided between the two. UBe13 is therefore similar to UPt3 in that the-magnetic response functions exist on two quite different energy scales. This appears different from Ce-based heavy fermions, and is not yet understood. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. EUROPEAN SYNCHROTRON RADIAT FACIL,F-38043 GRENOBLE,FRANCE. INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE. RP LANDER, GH (reprint author), COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,INST TRANSURANIUM ELEMENTS,POSTFACH 2340,W-7500 KARLSRUHE,GERMANY. NR 24 TC 20 Z9 20 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5387 EP 5391 DI 10.1103/PhysRevB.46.5387 PG 5 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400043 ER PT J AU PENN, DR COHEN, ML AF PENN, DR COHEN, ML TI EFFECTS OF BROADENING ON BCS THEORY IN THE PRESENCE OF VANHOVE SINGULARITIES SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTIVITY; LA2-XSRXCUO4; DENSITY; STATES; OXIDES AB There have been recent suggestions that high-T(c) superconductivity can be understood in terms of conventional BCS theory if there is a logarithmic Van Hove singularity in the electron density of states near the Fermi energy as suggested by band theory. We consider the effects of broadening of the singularity on theories of this type. The broadening may be caused by inhomogeneities arising from doping or structural defects, electron inelastic scattering, and three-dimensional dispersion. C1 LAWRENCE BERKELEY LAB,DEPT PHYS,DIV MAT SCI,BERKELEY,CA 94720. RP PENN, DR (reprint author), NATL INST STANDARDS & TECHNOL,ELECTR PHYS GRP,GAITHERSBURG,MD 20899, USA. NR 12 TC 14 Z9 14 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5466 EP 5469 DI 10.1103/PhysRevB.46.5466 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400054 ER PT J AU CHEN, AL LEWIS, SP SU, ZP YU, PY COHEN, ML AF CHEN, AL LEWIS, SP SU, ZP YU, PY COHEN, ML TI SUPERCONDUCTIVITY IN ARSENIC AT HIGH-PRESSURES SO PHYSICAL REVIEW B LA English DT Article ID STRUCTURAL PHASE-TRANSITION AB We have investigated the pressure dependence of the superconducting transition temperature T(c) of elemental arsenic up to 41 GPa both experimentally and theoretically. Our measurements indicate that a peak in T(c) occurs at the rhombohedral-simple-cubic structural phase transition. A first-principles calculation provides a physical description consistent with the observed behavior of T(c) under pressure. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP CHEN, AL (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 21 TC 18 Z9 19 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5523 EP 5527 DI 10.1103/PhysRevB.46.5523 PG 5 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400062 ER PT J AU SIMONOV, AY MOISEEV, MY AF SIMONOV, AY MOISEEV, MY TI PENETRATION OF VORTICES INTO ANISOTROPIC MAGNETIC SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Article ID INCLINED VORTICES AB Vortex penetration into superconductors with both electronic and magnetic anisotropies is discussed. The vortex field distribution in such compounds is calculated and the change of sign of the longitudinal component of the vortex field is observed. The direction along which the sign changes depends on the orientation of the vortex with respect to the axis of electronic and magnetic anisotropies. Near the temperature of the magnetic transition the reconfiguration of the vortex lattice is predicted. C1 IOWA STATE UNIV,DEPT PHYS & ASTRON,AMES,IA 50011. RP SIMONOV, AY (reprint author), IOWA STATE UNIV,AMES LAB,AMES,IA 50011, USA. RI Simonov, Andrei/C-1697-2015 OI Simonov, Andrei/0000-0001-6452-0214 NR 21 TC 3 Z9 3 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5556 EP 5560 DI 10.1103/PhysRevB.46.5556 PG 5 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400066 ER PT J AU TRANQUADA, JM GEHRING, PM SHIRANE, G SHAMOTO, S SATO, M AF TRANQUADA, JM GEHRING, PM SHIRANE, G SHAMOTO, S SATO, M TI NEUTRON-SCATTERING STUDY OF THE DYNAMIC SPIN SUSCEPTIBILITY IN YBA2CU3O6.6 SO PHYSICAL REVIEW B LA English DT Article ID FERMI-LIQUID THEORY; T-J MODEL; MAGNETIC EXCITATIONS; SINGLE-CRYSTAL; NORMAL-STATE; SUPERCONDUCTORS; FLUCTUATIONS; NMR; YBA2CU3O7-DELTA; RELAXATION AB We report a detailed neutron-scattering study of the dynamical spin susceptibility in a single crystal of YBa2Cu3O6+x, with x = 0.6 and T(c) = 53 K. The measurements cover the energy range from 5 to 50 meV, and temperatures from 10 to 100 K. It is shown that antiferromagnetic correlations between nearest-neighbor CuO2 layers are quite strong. As a result, only in-phase bilayer spin fluctuations axe observed at low energies, with the out-of-phase fluctuations making a weak appearance at 40 meV. Within the two-dimensional (2D) Brillouin zone corresponding to a single layer, the imaginary part of the dynamical susceptibility-chi" (Q, omega) exhibits a broad peak about the point corresponding to antiferromagnetic order Q(AF) with a width that is mildly energy dependent. At 10 K, chi"(Q(AF), omega) has a rather sharp peak near 27 meV; integrating-chi" over the 2D magnetic Brillouin zone makes the peak in energy much broader. (We have verified that the falloff at high energies also occurs in a previously studied crystal with x = 0.5, T(c) = 50 K.) Although the amplitude at 5 meV and 10 K is near zero, considerable spectral weight is observed at energies well below the weak-coupling limit for 2-DELTA, where DELTA is the superconducting gap. The temperature dependence of the 2D Q-integrated-chi" is well described by a simple function containing a temperature-independent energy gap of 9 meV. A study of the Q dependence of chi" at HBAR-omega = 15 meV indicates that the signal falls off rather abruptly on moving away from Q(AF) (compared to a simple Gaussian distribution). Measurements along two different directions in the 2D zone suggest that the width of the distribution about Q(AF) is anisotropic. These results are discussed in the context of current theoretical models. C1 NAGOYA UNIV, DEPT PHYS, NAGOYA 46401, JAPAN. RP BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. RI Tranquada, John/A-9832-2009; OI Tranquada, John/0000-0003-4984-8857; Gehring, Peter/0000-0002-9236-2046 NR 55 TC 268 Z9 268 U1 1 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5561 EP 5575 DI 10.1103/PhysRevB.46.5561 PG 15 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400067 ER PT J AU ZHU, S CHRISTEN, DK KLABUNDE, CE THOMPSON, JR JONES, EC FEENSTRA, R LOWNDES, DH NORTON, DP AF ZHU, S CHRISTEN, DK KLABUNDE, CE THOMPSON, JR JONES, EC FEENSTRA, R LOWNDES, DH NORTON, DP TI SUPERCONDUCTING TRANSPORT-PROPERTIES OF EPITAXIAL YBA2CU3O7-DELTA THIN-FILMS - A CONSISTENT DESCRIPTION BASED ON THERMALLY-ACTIVATED FLUX MOTION SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; VORTEX-GLASS SUPERCONDUCTIVITY; BA-CU-O; CREEP; DENSITY AB The electrical-transport current properties of a series of epitaxial YBa2Cu3O7-delta thin films have been investigated using a range of techniques, including the activated electrical resistivity for fields B > B(irr), the irreversibility field; the I-V curves for both B > B(irr) and B < B(irr); and the resistive transitions in magnetic fields. The results are analyzed in the framework of a model for thermally-activated flux motion. The model utilizes a pinning barrier that is dependent on the current density J, temperature T, and applied magnetic field B, given by U0 is-proportional-to exp(-J/J(c0))(1 - t)n/B, with n approximately 1.8. The exponential J dependence agrees well with the behavior U is-proportional-to J(-mu) (mu approximately 0.8) of the collective-flux-creep model in the regime J < J(c0)), while properly describing the finite pinning potential observed in the activated-flux-flow regime as J --> 0. The resulting analysis using this form for U0 provides a quantitatively self-consistent interpretation of all sets of measurements. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP ZHU, S (reprint author), UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996, USA. NR 23 TC 42 Z9 43 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5576 EP 5580 DI 10.1103/PhysRevB.46.5576 PG 5 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400068 ER PT J AU ZHANG, L JAIN, JK EMERY, VJ AF ZHANG, L JAIN, JK EMERY, VJ TI PHASE-TRANSITION AS A FUNCTION OF ORBITAL DEGENERACY IN A GENERALIZED HUBBARD-MODEL SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTORS; ANDERSON MODEL; EXPANSION; OXIDES AB We study a two-band Hubbard model with one copper and one oxygen orbital in each cell. These orbitals are bybridized within a cell, and different cells are coupled via oxygen-oxygen hopping. The Hubbard interaction is set equal to zero on oxygen and infinity on copper. We show that, for sufficiently small oxygen bandwidth, the system is insulating at half filling whatever the value of DELTA (the energy difference between the oxygen and copper orbitals). This contradicts the prediction of the slave-boson mean-field theory that there is a metal-insulator transition at a fixed value of DELTA = DELTA(c), independent of the oxygen bandwidth in the narrow-bandwidth limit. In order to understand this discrepancy, we study a generalized model in which the degeneracy of the copper orbitals in a given cell is N. Slave-boson mean-field theory is exact in the N --> infinity limit, indicating that there is a phase transition at some value of N. This question is studied further by a combination of 1/N expansion around the N = infinity point, and numerical diagonalization up to N = 16. It is found that for the physical case of N = 2, the results obtained from the large-N theory are qualitatively and quantitatively reliable only for DELTA > DELTA(c), i.e., when there is no Bose condensation in the N --> infinity limit. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP ZHANG, L (reprint author), SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794, USA. NR 20 TC 14 Z9 14 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5599 EP 5605 DI 10.1103/PhysRevB.46.5599 PG 7 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400072 ER PT J AU DAI, Q LEVY, JL FETTER, AL HANNA, CB LAUGHLIN, RB AF DAI, Q LEVY, JL FETTER, AL HANNA, CB LAUGHLIN, RB TI QUANTUM-MECHANICS OF THE FRACTIONAL-STATISTICS GAS - RANDOM-PHASE APPROXIMATION SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTIVITY AB A description of the fractional-statistics gas based on the complete summation of Hartree, Fock, ladder and bubble diagrams is presented. The superfluid properties identified previously in the random-phase-approximation (RPA) calculation of Fetter, Hanna, and Laughlin [Phys. Rev. B 39, 9679 (1989)] are substantially confirmed. The discrepancy between the RPA sound speed and the Hartree-Fock bulk modulus is found to be eliminated. The unusual Hall-effect behavior is found to vanish for the Bose gas test case but not for the fractional-statistics gas, implying that it is physically correct. Excellent agreement is obtained with the collective-mode dispersion obtained numerically by Xie, He, and Das Sarma [Phys. Rev. Lett. 65, 649 (1990)]. C1 IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP DAI, Q (reprint author), STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305, USA. NR 22 TC 37 Z9 37 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5642 EP 5677 DI 10.1103/PhysRevB.46.5642 PG 36 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400077 ER PT J AU GHIRON, K SALAMON, MB VEAL, BW PAULIKAS, AP DOWNEY, JW AF GHIRON, K SALAMON, MB VEAL, BW PAULIKAS, AP DOWNEY, JW TI HEAT-CAPACITY STUDIES OF REDUCED-OXYGEN-CONTENT YBA2CU3O7-X NEAR THE SUPERCONDUCTING TRANSITION SO PHYSICAL REVIEW B LA English DT Note ID SPIN-LATTICE RELAXATION; SINGLE-CRYSTALS; CUPRATE SUPERCONDUCTORS; MAGNETIC-PROPERTIES; HIGH-TC; TEMPERATURE; CU; DYNAMICS; BEHAVIOR; PHASE AB We have performed high-resolution ac calorimetry near the superconducting transition of single crystals of reduced-oxygen-content YBa2Cu3O7-x. The heat-capacity anomaly decreases dramatically with T(c)(x) despite the fact that the transition width and the Meissner fraction indicate that the samples are of similar quality. In addition, the sensitivity of the heat-capacity anomaly to magnetic fields is several times stronger in these samples than has been observed in previous work on fully oxygenated samples. The reduction in the amplitude of the heat-capacity anomaly corresponds to the reduction in the apparent density of states at the Fermi surface. C1 UNIV ILLINOIS,MAT RES LAB,URBANA,IL 60439. ARGONNE NATL LAB,ARGONNE,IL 60439. RP GHIRON, K (reprint author), UNIV ILLINOIS,DEPT PHYS,1110 W GREEN ST,URBANA,IL 60439, USA. NR 39 TC 15 Z9 15 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5837 EP 5840 DI 10.1103/PhysRevB.46.5837 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400118 ER PT J AU HAO, ZD CLEM, JR AF HAO, ZD CLEM, JR TI ANGULAR DEPENDENCES OF THE THERMODYNAMIC AND ELECTROMAGNETIC PROPERTIES OF THE HIGH-TC SUPERCONDUCTORS IN THE MIXED STATE SO PHYSICAL REVIEW B LA English DT Note ID HIGH-TEMPERATURE SUPERCONDUCTORS; UPPER CRITICAL-FIELD; MAGNETIC-FIELD; SINGLE-CRYSTAL; II SUPERCONDUCTORS; RESISTIVE TRANSITION; HEAT-CAPACITY; THIN-FILMS; DISSIPATION; ANISOTROPY AB The dependence upon the applied field H of the Gibbs free-energy difference DELTA-G between the mixed and normal states of a high-kappa anisotropic type-II superconductor is examined; DELTA-G is found to be a function only of the reduced field h = H/H(c2) (theta, phi) for H >> H(c1). Other thermodynamic quantities such as the magnetization and specific heat show similar behaviors. The same scaling property can also be observed for the magnetoresistivity, critical current density, and flux-line-lattice melting temperature of the high-T(c) superconductors. C1 IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS & ASTRON, AMES, IA 50011 USA. RP IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA. NR 38 TC 104 Z9 106 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5853 EP 5856 DI 10.1103/PhysRevB.46.5853 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400122 ER PT J AU LI, Q SUENAGA, M HIKATA, T SATO, K AF LI, Q SUENAGA, M HIKATA, T SATO, K TI 2-DIMENSIONAL FLUCTUATIONS IN THE MAGNETIZATION OF BI2SR2CA2CU3O10 SO PHYSICAL REVIEW B LA English DT Note ID CA-CU-O; HIGH-TEMPERATURE SUPERCONDUCTORS; II SUPERCONDUCTORS; FIELD; TRANSITION; YBA2CU3O7-DELTA; DIAMAGNETISM; CROSSOVER; MODEL; WIRES AB Magnetization measurements on c-axis-oriented bulk Bi2Sr2Ca2Cu3O10 with the magnetic field parallel to the c axis are reported. The results show large fluctuation effects, which can be explained by Ginzburg-Landau fluctuation theory for a two-dimensional (2D) system. The magnetization in high fields displays good scaling behavior as a function of [T - T(c)(H)]/(TH)1/2. The weak-field fluctuation diamagnetic susceptibility-chi(T) above T(c) can be fitted well in terms of the 2D Lawrence-Doniach model. Values of xi(ab)(0) and dH(c2)/dT derived from our fluctuation analysis are consistent with those obtained by fitting the Hao-Clem variational model to the reversible magnetization data below T(c). C1 SUMITOMO ELECT IND LTD,OSAKA RES LABS,KONOHANA KU,OSAKA 554,JAPAN. RP LI, Q (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. NR 26 TC 70 Z9 70 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5857 EP 5860 DI 10.1103/PhysRevB.46.5857 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400123 ER PT J AU SWIHART, JC BUTLER, WH MUELLER, FM ARNOLD, GB AF SWIHART, JC BUTLER, WH MUELLER, FM ARNOLD, GB TI BOSON LINEWIDTH IN HIGH-TEMPERATURE SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Note ID ELECTRON-PHONON INTERACTION; BI2SR2CACU2O8; MECHANISMS; NB AB We have considered boson exchange models of high-temperature superconductors which use Eliashberg theory and in which the bare bosons have sharp spectral features. In particular, we have calculated the boson linewidth due to the interaction with the charge carriers. We find for a recent model of Arnold, Mueller, and Swihart that the width of the 10-meV peak in their alpha-2F is consistent with a broadened boson peak. However, for a weak-coupling model with the boson peak in the eV range, the interaction causes a broadening in the boson peak that is comparable to or larger than the energy of the peak. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. LOS ALAMOS NATL LAB,CTR MAT SCI,LOS ALAMOS,NM 87545. UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. RP SWIHART, JC (reprint author), INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405, USA. NR 18 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5861 EP 5863 DI 10.1103/PhysRevB.46.5861 PG 3 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400124 ER PT J AU SMEDSKJAER, LC BANSIL, A WELP, U FANG, Y BAILEY, KG AF SMEDSKJAER, LC BANSIL, A WELP, U FANG, Y BAILEY, KG TI POSITRON 2-DIMENSIONAL ANGULAR-CORRELATION-OF-ANNIHILATION-RADIATION STUDY OF UNTWINNED YBA2CU3O6.9 IN THE A-AXIS PROJECTION SO PHYSICAL REVIEW B LA English DT Note ID FERMI-SURFACE; MOMENTUM DENSITY; ELECTRONIC-STRUCTURE; 2D ACAR; YBA2CU3O7-DELTA AB We present a two-dimensional (2D)-ACAR positron annihilation study of an untwinned YBa2Cu3O6.9 metallic sample in the a-axis projection; all existing data from untwinned samples have employed the c projection. The data show a clear presence of the Cu-O chain related ridge Fermi surface extending along the GAMMA-Z direction and two associated umklapp images at higher momenta. These results are consistent with the previously investigated c projection of the momentum density in YBa2Cu3O6.9 and do not appear to indicate a strong localization of these electron states along the c direction. We compare and contrast the structures in 2D-ACAR's in the a and c projections, delineating similarities and differences between the results for the two projections. C1 NORTHEASTERN UNIV,DEPT PHYS,BOSTON,MA 02115. RP SMEDSKJAER, LC (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 30 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 9 BP 5868 EP 5871 DI 10.1103/PhysRevB.46.5868 PG 4 WC Physics, Condensed Matter SC Physics GA JM064 UT WOS:A1992JM06400126 ER PT J AU NGUYEN, T HO, PS KWOK, T NITTA, C YIP, S AF NGUYEN, T HO, PS KWOK, T NITTA, C YIP, S TI THERMAL STRUCTURAL DISORDER AND MELTING AT A CRYSTALLINE INTERFACE SO PHYSICAL REVIEW B LA English DT Article ID 1ST-ORDER BULK TRANSITIONS; EMBEDDED-ATOM-METHOD; MOLECULAR-DYNAMICS; GRAIN-BOUNDARIES; COMPUTER-SIMULATION; ALUMINUM; SILICON; METALS; BICRYSTALS; TWIST AB Thermal disordering and melting at a grain boundary are investigated by molecular dynamics in an internally consistent simulation model that avoids a number of pitfalls of earlier models. The bulk melting temperature T(m) of the model system, specified by an embedded-atom-method potential function fitted to aluminum, is first determined by observing directly surface-nucleated melting in a single-crystal cell with free surfaces. Simulation is then carried out on a bicrystal cell with a high-angle symmetrical tilt grain boundary on the (130BAR) plane. Profiles across the interface of local structural order and energy, along with data on atomic mobility, are obtained at several temperatures from below T(m) to above T(m); the results indicate that melting is nucleated at the grain boundary in a similar manner as at the free surface, and that there is no evidence of premelting. In the surface region as well as the grain-boundary core, thermal disordering at temperatures below T(m) was observed with characteristic metastable behavior commencing at about 0.93 T(m). The temperature variation of the interfacial thickness suggests that the onset of disordering is a continuous process. C1 MIT,DEPT NUCL ENGN,CAMBRIDGE,MA 02139. IBM CORP,ESSEX JCT,VT 05452. IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. MIT,DEPT NUCL ENGN,CAMBRIDGE,MA 02139. NR 32 TC 35 Z9 35 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6050 EP 6060 DI 10.1103/PhysRevB.46.6050 PG 11 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900018 ER PT J AU VANBURCK, U SIDDONS, DP HASTINGS, JB BERGMANN, U HOLLATZ, R AF VANBURCK, U SIDDONS, DP HASTINGS, JB BERGMANN, U HOLLATZ, R TI NUCLEAR FORWARD SCATTERING OF SYNCHROTRON RADIATION SO PHYSICAL REVIEW B LA English DT Article ID BRAGG-DIFFRACTION; RESONANT DIFFRACTION; SPECTROSCOPY; CRYSTALS; PULSES; DECAY AB The coherent nuclear reemission in the forward direction has been measured following excitation of the Mossbauer transitions in polycrystalline Fe-57 foils by synchrotron radiation. The excited resonances are sufficiently narrow in energy that the time dependence of their decay can be straightforwardly observed, and in particular the details of the collective response to single-photon excitation can be studied. The collective nuclear scattering conditions were varied directly over a large range by using foil thicknesses between 0.5 and 28.5-mu-m. The envelope of the time evolution showed significant changes with increasing foil thickness. For thin foils (up to 3-mu-m) the envelope was exponential in the observed time window, with a decay time decreasing with increasing foil thickness. For thicker foils an oscillatory modulation of the envelope and a significant shift in the phase of the beat pattern were observed. A simple optical model can explain all the observed phenomena. C1 TECH UNIV MUNICH,DEPT PHYS E15,W-8046 GARCHING,GERMANY. RP VANBURCK, U (reprint author), BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973, USA. NR 31 TC 100 Z9 100 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6207 EP 6211 DI 10.1103/PhysRevB.46.6207 PG 5 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900036 ER PT J AU KUNG, PJ MALEY, MP MCHENRY, ME WILLIS, JO COULTER, JY MURAKAMI, M TANAKA, S AF KUNG, PJ MALEY, MP MCHENRY, ME WILLIS, JO COULTER, JY MURAKAMI, M TANAKA, S TI MAGNETIC HYSTERESIS AND FLUX CREEP OF MELT-POWDER-MELT-GROWTH YBA2CU3O7 SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Article ID BA-CU-O; HIGH-TEMPERATURE SUPERCONDUCTORS; CRITICAL CURRENT-DENSITY; OXIDE SUPERCONDUCTORS; ACTIVATION-ENERGY; DEPENDENCE; CRYSTAL; SYSTEM; PHASE; FIELD AB Magnetic hysteresis and flux creep characteristics in melt-powder-melt-growth YBa2Cu3O7 with Y2BaCuO5 inclusions were measured between 5 and 80 K for magnetic fields up to 5 T. The critical magnetization current densities which were calculated using the Bean model and the sample dimension show a weak dependence on magnetic field. The J(c) values are of the order of 10(4) A/cm2 at 60 K over the investigated field range. The magnetic relaxation rate Q=-dM/d 1nt first drops monotonically with increasing temperatures and then gradually saturates, which is similar to the behavior of the initial magnetization M0 versus temperature. The normalized relaxation rate S = d 1nM/d 1nt, plotted as a function of temperature, shows a maximum at around 30 K, and the corresponding values of S and T at the maximum are field dependent. A scaling relationship U(eff)(J,H)=U(i)G(T)F(J/J(i))/H0.55, where G(T)=1-(T/T(x))2,F(J/J(i))-(J/J(i))-n, and U(i) and J(i) are scaling constants, is proposed to fit the creep data from which a universal curve is attained. The characteristic temperature T(x) for the scaling function G(T) is determined from the irreversibility line. The current-dependent behavior of U(eff) obtained from this work agrees qualitatively with the result predicted by the theory of collective flux creep and suggests a vortex-glass state at low current density. C1 INT SUPERCOND TECHNOL CTR,SUPERCOND RES LAB,KOTO KU,TOKYO 135,JAPAN. CARNEGIE MELLON UNIV,DEPT MET ENGN & MAT SCI,PITTSBURGH,PA 15213. RP KUNG, PJ (reprint author), LOS ALAMOS NATL LAB,CTR SUPERCOND TECHNOL,LOS ALAMOS,NM 87545, USA. RI McHenry, Michael/B-8936-2009 NR 33 TC 64 Z9 64 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6427 EP 6434 DI 10.1103/PhysRevB.46.6427 PG 8 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900061 ER PT J AU VLCEK, BM FRISCHHERZ, MC FLESHLER, S WELP, U LIU, JZ DOWNEY, J VANDERVOORT, KG CRABTREE, GW KIRK, MA GIAPINTZAKIS, J FARMER, J AF VLCEK, BM FRISCHHERZ, MC FLESHLER, S WELP, U LIU, JZ DOWNEY, J VANDERVOORT, KG CRABTREE, GW KIRK, MA GIAPINTZAKIS, J FARMER, J TI FLUX PINNING IN YBA2CU3O7-DELTA SINGLE-CRYSTALS - NEUTRON-IRRADIATION AND ANNEALING SO PHYSICAL REVIEW B LA English DT Article ID OXIDE SUPERCONDUCTORS; BEAN MODEL; MAGNETIZATION; ANISOTROPY; CURRENTS AB Results of dc magnetization on neutron (n) -irradiated YBa2Cu3O7-delta single crystals are presented. The crystals were irradiated to a fluence of 2 X 10(17) n/cm2 (E > 0.1 MeV). The magnetization has been measured at 10, 40, and 70 K for both field orientations. The magnetization is thereby obtained by cooling the sample in zero field to the desired temperature. Then the field is ramped in steps of 0.25 T up to 5 T and reversed in the same steps. At each field the magnetization is measured. The hysteresis DELTA-M is defined as the difference in magnetization between descending and ascending branches in the hysteresis loop. At 10 K, we observe an increase of the hysteresis by a factor of 3 for H parallel-to c and by a factor of 10 for H parallel-to a,b due to n irradiation. After irradiation, some of the crystals were annealed at 100, 200, and 300-degrees-C for 8 h each. After each annealing step, the critical current densities and the transition temperatures were determined again. We observe that following the 300-degrees-C annealing, the magnetization hysteresis for H parallel-to a,b is almost reduced to the preirradiation level (a reduction in J(c) of 90%), in contrast to the H parallel-to c case, in which the decrease in hysteresis due to annealing is much less (a reduction in J(c) of 30%). Crystals irradiated under the same conditions were used for transmission-electron-microscopy (TEM) studies. By comparison between TEM and magnetization measurements, the role of the cascade defects in pinning was determined. It is furthermore shown by TEM that the cascade defects do not anneal for comparable annealing temperatures. We find that the hysteresis for H parallel-to c is governed by both the cascade defects which do not anneal and point defects or their clusters on the Y layers or CuO2 planes which do anneal, whereas for H parallel-to a,b, pinning is determined by oxygen defects in the CuO chains which anneal due to oxygen diffusion. C1 UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801. UNIV MISSOURI,RES REACTOR,COLUMBIA,MO 65211. RP VLCEK, BM (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 27 TC 33 Z9 33 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6441 EP 6450 DI 10.1103/PhysRevB.46.6441 PG 10 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900063 ER PT J AU KRESIN, VZ WOLF, SA AF KRESIN, VZ WOLF, SA TI INDUCED SUPERCONDUCTING STATE AND 2-GAP STRUCTURE - APPLICATION TO CUPRATE SUPERCONDUCTORS AND CONVENTIONAL MULTILAYERS SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTIVITY; TRANSITION-TEMPERATURE; SINGLE-CRYSTAL; ENERGY-GAP; YBA2CU3O7; PARAMETERS; BI2SR2CA2CU3OX; CONDUCTIVITY; RESISTIVITY; OXIDES AB An induced superconducting state caused by charge transfer between intrinsically superconducting (a) and intrinsically normal (beta) subsystems is studied. A most interesting case is a layered system with some layers being normal. An analysis of the general Hamiltonian describing the phenomenon allows us to evaluate T(c) and the spectrum, which displays a two-gap structure. A superconducting state can be induced through different charge transfer channels (intrinsic proximity effect; inelastic two-band channel). A very important contribution comes from the "mixed" channel. Systems with various strengths of the coupling are described. The presence of magnetic impurities leads to an induced gapless superconductivity. This model is applied to high-T(c) cuprates (in particular, to Y-Ba-Cu-O), as well as to conventional systems. The spectroscopy of Y-Ba-Cu-O appears to be very sensitive to the oxygen content whereas T(c) changes relatively slowly. The model is directly related to such phenomena as residual microwave losses, zero-bias anomalies, the "plateau" effect, etc. C1 USN,RES LAB,WASHINGTON,DC 20375. RP KRESIN, VZ (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Wolf, Stuart/A-7513-2009 NR 76 TC 161 Z9 162 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6458 EP 6471 DI 10.1103/PhysRevB.46.6458 PG 14 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900065 ER PT J AU LEON, M AF LEON, M TI USE OF TIME INFORMATION IN MUON LEVEL-CROSSING RESONANCE SPECTROSCOPY SO PHYSICAL REVIEW B LA English DT Note AB Muon level-crossing resonance (mu-LCR) spectroscopy is used to measure the variation of the emitted-positron asymmetry with respect to the longitudinal magnetic field, averaged over the muon lifetime. However, for pulsed and even chopped mu+ beams, time information can be used (i) to produce a stronger resonance signal, and (ii) to avoid most of the sensitivity to drifts, as compared to the customary integral mu-LCR technique. This can be done without reverting to the low-data rates normally required for time-differential muon-spin resonance (mu-SR) spectroscopy at cw accelerators. RP LEON, M (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 5 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6603 EP 6606 DI 10.1103/PhysRevB.46.6603 PG 4 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900084 ER PT J AU SALEMSUGUI, S SHI, DL AF SALEMSUGUI, S SHI, DL TI FLUX-CREEP ACTIVATION-ENERGY IN HIGH-T(C) SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Note ID SINGLE-CRYSTAL; CRITICAL STATE; DEPENDENCE; MAGNETIZATION; TC AB We investigated the relationship between the effective flux-creep activation energy U and the current density j (approxiamtely M), for both the YBa2Cu3Ox and Bi2Sr2CaCu2Ox systems. We found that the U-versus-M curves can be best fitted by a power law. More specifically, for a single crystal of Bi2Sr2CaCu2Ox at a given temperature, a logarithmic relation between U and M is found in the low-temperature region, while a power-law behavior takes place near the irreversibility line. The validity of the apparent activation energy U0 is also discussed. RP SALEMSUGUI, S (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 15 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1992 VL 46 IS 10 BP 6618 EP 6621 DI 10.1103/PhysRevB.46.6618 PG 4 WC Physics, Condensed Matter SC Physics GA JM409 UT WOS:A1992JM40900088 ER PT J AU BOUNDS, JA DYER, P AF BOUNDS, JA DYER, P TI SEARCH FOR NUCLEAR-EXCITATION BY LASER-DRIVEN ELECTRON MOTION SO PHYSICAL REVIEW C LA English DT Article ID TUNNELING IONIZATION; PLASMA; CONVERSION; U-235M; ISOMER; ENERGY; MODEL; FIELD AB It has been proposed that a nucleus may be excited by first exciting the atom's electrons with UV photons. The incident photons couple to the electrons, which would then couple via a virtual photon to the nucleus. As a test case, experiments with U-235 have been performed. A pulsed infrared laser produces an atomic vapor of U-235 which is then bombarded by a high-brightness UV laser beam. The resulting ions are collected. The first excited nuclear state of U-235 has a 26-min half-life and decays by internal conversion, resulting in emission of an atomic electron. These conversion electrons are detected by a channel electron multiplier. An upper limit of 4.0 x 10(-5) has been obtained for the probability of exciting the nucleus of a U-235 atom that is in the 248-nm UV beam for 700 fs at an irradiance in the range of 1.0 x 10(15) to 2.5 x 10(15) W/cm2. RP LOS ALAMOS NATL LAB, DIV PHYS, LOS ALAMOS, NM 87544 USA. NR 24 TC 13 Z9 13 U1 0 U2 1 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 1992 VL 46 IS 3 BP 852 EP 859 DI 10.1103/PhysRevC.46.852 PG 8 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000005 ER PT J AU BECKER, JA HENRY, EA KUHNERT, A WANG, TF YATES, SW DIAMOND, RM STEPHENS, FS DRAPER, JE KORTEN, W DELEPLANQUE, MA MACCHIAVELLI, AO AZAIEZ, F KELLY, WH CIZEWSKI, JA BRINKMAN, MJ AF BECKER, JA HENRY, EA KUHNERT, A WANG, TF YATES, SW DIAMOND, RM STEPHENS, FS DRAPER, JE KORTEN, W DELEPLANQUE, MA MACCHIAVELLI, AO AZAIEZ, F KELLY, WH CIZEWSKI, JA BRINKMAN, MJ TI LEVEL SPIN FOR SUPERDEFORMED NUCLEI NEAR A = 194 SO PHYSICAL REVIEW C LA English DT Article ID HG NUCLEI; BANDS; ALIGNMENT; MOMENTS; INERTIA; HG-191 AB Transition energies of 25 superdeformed (SD) bands in 13 nuclei of the A = 194 region were fitted by the power-series expansion of I in odd powers E(gamma)/2, HBAR(I + 1/2) = 2-alpha-omega + 4/3-beta-omega-3, where E(gamma)/2 = HBAR-omega, and by the expression for transition energy, E(gamma) = E(I + 2) - E(I), where E(I) = AI(I + 1) + B[I(I + 1)]2 + C[I(I + 1)]3. Results are generally similar, and level spins for these SD bands are given based on expectations of rotational model behavior. C1 UNIV CALIF DAVIS,DAVIS,CA 95616. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903. UNIV KENTUCKY,LEXINGTON,KY 40506. RP BECKER, JA (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI KORTEN, Wolfram/H-3043-2013; OI KORTEN, Wolfram/0000-0002-3940-0816 NR 31 TC 86 Z9 86 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 1992 VL 46 IS 3 BP 889 EP 903 DI 10.1103/PhysRevC.46.889 PG 15 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000009 ER PT J AU WARBURTON, EK BROWN, BA AF WARBURTON, EK BROWN, BA TI EFFECTIVE INTERACTIONS FOR THE OP1SOD NUCLEAR SHELL-MODEL SPACE SO PHYSICAL REVIEW C LA English DT Article ID INELASTIC ELECTRON-SCATTERING; BETA-DECAY; LIGHT-NUCLEI; MATRIX-ELEMENTS; ENERGY-LEVELS; J-DEPENDENCE; STATES; ELECTROEXCITATION; O-16; TRANSITIONS AB Shell-model interactions are constructed in the cross-shell model space connecting the 0p and 1s0d shells with due regard for the perturbative effects of the neighboring 0s and 0f1p shells. The interactions have three distinctive 0p-shell, cross-shell, and 1s0d-shell parts. The latter is taken to be the previously determined W interaction. The 0p-shell interaction is represented by two-body matrix elements and the cross-shell by either a potential or by two-body matrix elements. The interactions are determined by least-squares fits to 51 0p-shell and 165 cross-shell binding energies. It is found that the addition of monopole terms to a potential that is otherwise similar to that of the Millener-Kurath interaction results in a great improvement in the fit. In the fit to two-body matrix elements, 45 of 97 possible linear combinations of parameters are varied and the root-mean-square deviation for the 165 cross-shell energies is 330 keV. Examples of the application of the interactions are given for the prediction of neutron-rich binding energies, Gamow-Teller decays, and 0HBAR-omega, 1HBAR-omega, and 2HBAR-omega energy spectra. C1 NATL SUPERCONDUCTING CYCLOTRON LAB,E LANSING,MI 48824. DEPT PHYS & ASTRON,E LANSING,MI 48824. RP WARBURTON, EK (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 85 TC 522 Z9 526 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1992 VL 46 IS 3 BP 923 EP 944 DI 10.1103/PhysRevC.46.923 PG 22 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000012 ER PT J AU RAMAN, S JURNEY, ET STARNER, JW LYNN, JE AF RAMAN, S JURNEY, ET STARNER, JW LYNN, JE TI THERMAL-NEUTRON CAPTURE BY SILICON ISOTOPES SO PHYSICAL REVIEW C LA English DT Article ID SCATTERING LENGTHS; GAMMA-RAYS; ENERGY-LEVELS; STATES AB We have studied primary and secondary gamma-rays (46 in Si-29, 107 in Si-30, and 33 in Si-31) following thermal-neutron capture by the stable Si-28, Si-29, and Si-30 isotopes. Almost all of these gamma-rays have been incorporated into corresponding level schemes consisting of 12 excited levels in Si-29, 28 in Si-30, and 9 in Si-31. In each case, the observed gamma-rays account for nearly 100% of all captures. The measured neutron separation energies for Si-29, Si-30, and Si-31 are 8473.56+/-0.04, 10609.24+/-0.05, and 6587.40+/-0.05 keV, respectively. The measured thermal-neutron capture cross sections for Si-28, Si-29, and Si-30 are 169+/-4, 119+/-3, and 107+/-3 mb, respectively. In all three cases, primary electric-dipole (E1) transitions account for the bulk of the total capture cross section. We have calculated these E1 partial cross sections using direct-capture theory. The agreement between theory and experiment is satisfactory. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544. RP RAMAN, S (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37830, USA. NR 35 TC 32 Z9 32 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 1992 VL 46 IS 3 BP 972 EP 983 DI 10.1103/PhysRevC.46.972 PG 12 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000016 ER PT J AU KELLOGG, SE NORMAN, EB AF KELLOGG, SE NORMAN, EB TI ISOMER-TO-ISOMER BETA-DECAY OF HF-180(M) AND THE NUCLEOSYNTHESIS OF TA-180(M) SO PHYSICAL REVIEW C LA English DT Article ID CAPTURE CROSS-SECTIONS; SILICON DETECTOR; S-PROCESS; NEUTRON; SEARCH; LU-180 AB The direct beta-decay branch linking Hf-180m (t1/2 = 5.5 h) to Ta-180m has been measured to be f(beta = (0.29+/-0.05+/-0.06)%. The relevance of this decay for the nucleosynthesis of Ta-180m is discussed. C1 UNIV WASHINGTON, NUCL PHYS LAB, SEATTLE, WA 98195 USA. LAWRENCE BERKELEY LAB, DIV NUCL SCI, BERKELEY, CA 94720 USA. NR 65 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 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1992 VL 46 IS 3 BP 1115 EP 1131 DI 10.1103/PhysRevC.46.1115 PG 17 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000031 ER PT J AU DACRUZ, MTF CHAN, Y LARIMER, RM LESKO, KT NORMAN, EB STOKSTAD, RG WIETFELDT, FE ZLIMEN, I AF DACRUZ, MTF CHAN, Y LARIMER, RM LESKO, KT NORMAN, EB STOKSTAD, RG WIETFELDT, FE ZLIMEN, I TI HALF-LIFE OF NI-56 SO PHYSICAL REVIEW C LA English DT Note ID SN-1987A AB The half-life of Ni-56 was reinvestigated by measuring the time-dependent yields of several nuclear gamma-ray lines over a period of 38 days. These yields were added and normalized to that of one internal standard, and a value of 6.075+/-0.010 d was deduced. RP DACRUZ, MTF (reprint author), LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 16 TC 8 Z9 8 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 1992 VL 46 IS 3 BP 1132 EP 1135 DI 10.1103/PhysRevC.46.1132 PG 4 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000032 ER PT J AU ZLIMEN, I BROWNE, E CHAN, Y DACRUZ, MTF GARCIA, A LARIMER, RM LESKO, KT NORMAN, EB STOKSTAD, RG WIETFELDT, FE AF ZLIMEN, I BROWNE, E CHAN, Y DACRUZ, MTF GARCIA, A LARIMER, RM LESKO, KT NORMAN, EB STOKSTAD, RG WIETFELDT, FE TI 2ND-FORBIDDEN ELECTRON-CAPTURE DECAY OF FE-55 SO PHYSICAL REVIEW C LA English DT Note AB Superimposed on the continuous inner-bremsstrahlung spectrum of Fe-55, we observe a weak gamma-ray line at an energy of 126.0 keV. The intensity of this line with respect to the inner-bremsstrahlung spectrum does not change with time. We interpret this gamma-ray line to be produced by the second-forbidden nonunique decay of Fe-55 to the first excited state of Mn-55 with a branching of (1.3 +/- 0.1) x 10(-7)%. RP ZLIMEN, I (reprint author), LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 9 TC 5 Z9 5 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1992 VL 46 IS 3 BP 1136 EP 1138 DI 10.1103/PhysRevC.46.1136 PG 3 WC Physics, Nuclear SC Physics GA JP120 UT WOS:A1992JP12000033 ER PT J AU ANJOS, JC APPEL, JA BEAN, A BRACKER, SB BROWDER, TE CREMALDI, LM DUBOSCQ, JE ELLIOTT, JR ESCOBAR, CO GIBNEY, MC HARTNER, GF HUBER, J KARCHIN, PE KUMAR, BR LOSTY, MJ LUSTE, GJ MANTSCH, PM MARTIN, JF MCHUGH, S MENARY, SR MORRISON, RJ NASH, T PINFOLD, J PUNKAR, G PUROHIT, MV ROSS, WR SANTORO, AFS SCHMIDT, DM SHOUP, AL SLIWA, K SOKOLOFF, MD SOUZA, MHG SPERKA, D SPALDING, WJ STREETMAN, ME STUNDZIA, AB WITHERELL, MS AF ANJOS, JC APPEL, JA BEAN, A BRACKER, SB BROWDER, TE CREMALDI, LM DUBOSCQ, JE ELLIOTT, JR ESCOBAR, CO GIBNEY, MC HARTNER, GF HUBER, J KARCHIN, PE KUMAR, BR LOSTY, MJ LUSTE, GJ MANTSCH, PM MARTIN, JF MCHUGH, S MENARY, SR MORRISON, RJ NASH, T PINFOLD, J PUNKAR, G PUROHIT, MV ROSS, WR SANTORO, AFS SCHMIDT, DM SHOUP, AL SLIWA, K SOKOLOFF, MD SOUZA, MHG SPERKA, D SPALDING, WJ STREETMAN, ME STUNDZIA, AB WITHERELL, MS TI STUDY OF THE DECAYS D-]K3-PI SO PHYSICAL REVIEW D LA English DT Article ID MESONS AB We report measurements of the decays D0-->K--pi+pi+pi-, D+-->K0-pi+pi+pi-BAR, D+-->K-pi+pi+pi-0, and D0-->K0-pi+pi-pi-0BAR from Fermilab photoproduction experiment E691. A complete resonant substructure analysis is used to determine the relative fractions and phases of amplitudes contributing to the decays D0-->K--pi+pi+pi-, D+-->K0-pi+pi+pi-BAR, and D+-->K--pi+pi+pi-0. C1 UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106. CARLETON UNIV,OTTAWA K1S 5B6,ONTARIO,CANADA. UNIV CINCINNATI,CINCINNATI,OH 45221. UNIV COLORADO,BOULDER,CO 80309. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. NATL RES COUNCIL CANADA,OTTAWA K1A 0R6,ONTARIO,CANADA. PRINCETON UNIV,PRINCETON,NJ 08544. UNIV SAO PAULO,SAO PAULO,BRAZIL. UNIV TORONTO,TORONTO M5S 1A7,ONTARIO,CANADA. YALE UNIV,NEW HAVEN,CT 06520. UNIV MISSISSIPPI,OXFORD,MS 38677. RP ANJOS, JC (reprint author), CTR BRASILEIRO PESQUISAS FIS,BR-20000 RIO DE JANEIRO,BRAZIL. RI Anjos, Joao/C-8335-2013 NR 16 TC 9 Z9 9 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1992 VL 46 IS 5 BP 1941 EP 1950 DI 10.1103/PhysRevD.46.1941 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200011 ER PT J AU GIELE, WT GLOVER, EWN AF GIELE, WT GLOVER, EWN TI HIGHER-ORDER CORRECTIONS TO JET CROSS-SECTIONS IN E+E- ANNIHILATION SO PHYSICAL REVIEW D LA English DT Article ID LEADING-LOGARITHM CALCULATION; VACUUM POLARIZATION DIAGRAMS; QUANTUM CHROMODYNAMICS; PARTON PROCESSES; GAUGE-THEORIES; RADIATIVE-CORRECTIONS; HELICITY AMPLITUDES; SPINOR TECHNIQUES; GLUON SCATTERING; HADRON COLLIDERS AB A general method to calculate next-to-leading-order multijet cross sections is presented. The emphasis is on how to isolate the soft and collinear divergences in multiparton matrix elements at all orders in the number of colors. As an example, the method is used to isolate the divergences in e+e- --> qqBAR + n gluons and e+e- --> qqqqBAR + n gluons, where, for simplicity we keep only the terms at leading order in the number of colors. The usual algebraic complexity of calculating next-to-leading-order corrections in QCD is avoided, especially the d-dimensional squaring of the real matrix elements and the hard phase-space integrals. Some remarks about the stucture of the virtual contributions are made. As a first application, and to examine the feasibility of the approach, explicit Monte Carlo programs are constructed which contain the complete next-to-leading-order corrections to e+e- --> 2 jets and e+e- --> 3 jets. It is demonstrated that the method works and can be readily applied to a variety of processes. C1 UNIV DURHAM,DEPT PHYS,DURHAM DH1 3LE,ENGLAND. RP GIELE, WT (reprint author), FERMI NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. RI Glover, Edward/A-4597-2012 OI Glover, Edward/0000-0002-0173-4175 NR 71 TC 327 Z9 328 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1992 VL 46 IS 5 BP 1980 EP 2010 DI 10.1103/PhysRevD.46.1980 PG 31 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200016 ER PT J AU BARGER, V CHEUNG, KM HAN, T STANGE, A ZEPPENFELD, D AF BARGER, V CHEUNG, KM HAN, T STANGE, A ZEPPENFELD, D TI FULL TREE-LEVEL CALCULATION OF THE QQ-]QQWZ ELECTROWEAK PROCESS AT HADRON SUPERCOLLIDERS SO PHYSICAL REVIEW D LA English DT Article ID HEAVY-HIGGS-BOSON; SYMMETRY-BREAKING SECTOR; PAIR PRODUCTION; SCATTERING; COLLIDERS; QUARK; SSC; W+/; ASSOCIATION; COLLISIONS AB We present a full standard model calculation of the qq --> qqWZ electroweak process in pp collisions at the Superconducting Super Collider, including W and Z leptonic decay correlations. We also analyze the backgrounds to this signal from ZttBAR --> ZW + jets and qqBAR --> WZ + jets. Single forward jet tagging and vetoing of events with greater-than-or-equal-to 2 central jets can suppress the backgrounds with little effect on the signal. With 10 fb-1 integrated luminosity we expect 50 signal events and 30 background events. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP BARGER, V (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. RI Cheung, Kingman/A-8380-2008 OI Cheung, Kingman/0000-0003-2176-4053 NR 56 TC 18 Z9 18 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 1992 VL 46 IS 5 BP 2028 EP 2039 DI 10.1103/PhysRevD.46.2028 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200019 ER PT J AU BRODSKY, SJ HILLER, JR AF BRODSKY, SJ HILLER, JR TI UNIVERSAL PROPERTIES OF THE ELECTROMAGNETIC-INTERACTIONS OF SPIN-ONE SYSTEMS SO PHYSICAL REVIEW D LA English DT Article ID ELECTRON-DEUTERON SCATTERING; MAGNETIC FORM-FACTOR; HEAVY-ION COLLIDERS; W-BOSON; QUANTUM CHROMODYNAMICS; TENSOR POLARIZATION; DISTINCTIVE SIGNATURES; ELASTIC-SCATTERING; MOMENTUM-TRANSFER; NUCLEAR-PHYSICS AB The dominance of helicity-conserving amplitudes in gauge theory is shown to imply universal ratios for the charge, magnetic, and quadrupole form factors of spin-one bound states: G(C)(Q2): G(M)(Q2) : G(Q)(Q2) = (1-2/3-eta) : 2 : -1. These ratios hold at large spacelike or timelike momentum transfer in the case of composite systems such as the rho or deuteron in QCD with corrections of order LAMBDA(QCD)/Q and LAMBDA(QCD)/M(rho,d). They axe also the ratios predicted for the electromagnetic couplings of the W+/- for all Q2 in the standard model at the tree level. In the case of the deuteron, the leading-twist perturbative QCD predictions are valid at Q2 = \q2\ >> LAMBDA(QCD)M(d), but do not require the kinematical ratio eta = Q2/4M(d)2 to be large. These results provide new all-angle predictions for the leading power behavior of the tensor polarization T20(Q2,theta) and the invariant ratio B(Q2)/A(Q2). We also use a generalization of the Drell-Hearn-Gerasimov sum rule to show that the magnetic and quadrupole moments of any composite spin-one system take on the canonical values mu = e/M and Q = -e/M2 in the strong binding limit of the zero bound-state radius or infinite excitation energy. This allows new empirical constraints on the possible internal structure of the Z0 and W+/-vector bosons. Simple gauge-invariant and Lorentz-covariant models and null zone theory are used to illustrate these results. Complications that arise when the Breit frame is used for form-factor analyses are also pointed out. C1 UNIV MINNESOTA,DEPT PHYS,DULUTH,MN 55812. RP BRODSKY, SJ (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 73 TC 119 Z9 120 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1992 VL 46 IS 5 BP 2141 EP 2149 DI 10.1103/PhysRevD.46.2141 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200031 ER PT J AU BITAR, KM DEGRAND, T EDWARDS, R GOTTLIEB, S HELLER, UM KENNEDY, AD KOGUT, JB KRASNITZ, A LIU, W OGILVIE, MC RENKEN, RL ROSSI, P SINCLAIR, DK SUGAR, RL TOUSSAINT, D WANG, KC AF BITAR, KM DEGRAND, T EDWARDS, R GOTTLIEB, S HELLER, UM KENNEDY, AD KOGUT, JB KRASNITZ, A LIU, W OGILVIE, MC RENKEN, RL ROSSI, P SINCLAIR, DK SUGAR, RL TOUSSAINT, D WANG, KC TI HADRON SPECTRUM IN QCD WITH VALENCE WILSON FERMIONS AND DYNAMIC STAGGERED FERMIONS AT 6/G2=5.6 SO PHYSICAL REVIEW D LA English DT Article ID QUANTUM CHROMODYNAMICS AB We present an analysis of hadronic spectroscopy for Wilson valence quarks with dynamical staggered fermions at a lattice coupling 6/g2=beta=5.6 at a sea-quark mass of am(q)=0.01 and 0.025, and of Wilson valence quarks in the quenched approximation at beta=5.85 and 5.95, both on 16(3)X32 lattices. We make comparisons with our previous results with dynamical staggered fermions at the same parameter values but on 16(4) lattices doubled in the temporal direction. C1 THINKING MACHINES CORP,CAMBRIDGE,MA 02139. UNIV CENT FLORIDA,ORLANDO,FL 32816. UNIV COLORADO,BOULDER,CO 80309. INDIANA UNIV,BLOOMINGTON,IN 47405. UNIV ILLINOIS,URBANA,IL 61801. WASHINGTON UNIV,ST LOUIS,MO 63130. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106. UNIV ARIZONA,TUCSON,AZ 85721. UNIV NEW S WALES,KENSINGTON,NSW 2033,AUSTRALIA. RP BITAR, KM (reprint author), FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST,TALLAHASSEE,FL 32306, USA. OI Heller, Urs M./0000-0002-2780-5584 NR 21 TC 32 Z9 32 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 1992 VL 46 IS 5 BP 2169 EP 2178 DI 10.1103/PhysRevD.46.2169 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200034 ER PT J AU MOROZUMI, T SANDA, AI SONI, A AF MOROZUMI, T SANDA, AI SONI, A TI POSSIBLE APPLICATIONS OF THE LINEAR SIGMA-MODEL TO LATTICE COMPUTATIONS WITH LARGE M-PI SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL PERTURBATION-THEORY; DYNAMICS; DECAYS; QUARK AB Using the linear sigma-model we study the approach to chiral symmetry as the pseudoscalar-meson mass (M) is varied from approximately 500 MeV down to the physical value approximately M(pi). We show that, even at a tree graph level, the model implies a highly nontrivial dependence of the decay constant (F(M)), the constituent quark mass (m(q)), and the scalar (sigma) mass (M(sigma)) on M. With an eye to possible applications to K decays using lattice techniques we examine the relation between K --> 2-pi, K --> vacuum, and K --> pi in this approach. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP MOROZUMI, T (reprint author), ROCKEFELLER UNIV,NEW YORK,NY 10021, USA. NR 18 TC 3 Z9 3 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 1992 VL 46 IS 5 BP 2240 EP 2246 DI 10.1103/PhysRevD.46.2240 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200041 ER PT J AU VALENCIA, G WILLENBROCK, S AF VALENCIA, G WILLENBROCK, S TI HEAVY-HIGGS-BOSON RESONANCE SO PHYSICAL REVIEW D LA English DT Note ID EFFECTIVE-W-APPROXIMATION; 4-COMPONENT PHI-4 MODEL; PAIR PRODUCTION; SUPERCOLLIDER ENERGIES; PERTURBATIVE UNITARITY; HADRON SUPERCOLLIDERS; STANDARD MODEL; GLUON FUSION; MASS; SCATTERING AB We study the use of the standard Higgs boson, with m(H) > 700 GeV, as a model for a resonance in longitudinal-vector-boson scattering. We focus on the constraint placed upon the modulus of the amplitude by unitarity. We show that it is better to use the energy-dependent width GAMMA(s) = GAMMA(H) X (s/m(H)2)2 in the Higgs-boson propagator, rather than the usual approximation GAMMA(s) = GAMMA(H). The s-channel approximation, the effective-W approximation, and the full electroweak qq -- > qqVV process are discussed. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP VALENCIA, G (reprint author), FERMI NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 71 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 1992 VL 46 IS 5 BP 2247 EP 2251 DI 10.1103/PhysRevD.46.2247 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200042 ER PT J AU ACKLEH, ES BARNES, T CLOSE, FE AF ACKLEH, ES BARNES, T CLOSE, FE TI 2-PHOTON HELICITY SELECTION-RULES AND WIDTHS FOR POSITRONIUM AND QUARKONIUM STATES WITH ARBITRARY ANGULAR MOMENTA SO PHYSICAL REVIEW D LA English DT Note ID RESONANCES; COLLISIONS; DECAYS; HYBRID; MESON AB The observation of a large gamma-gamma width for the 1D2 qqBAR state pi-2(1670) suggests that the gamma-gamma couplings of many orbitally excited light-quark qqBAR states may be experimentally accessible. In this paper we present gamma-gamma helicity amplitudes for nonrelativistic fermion-antifermion states with general angular-momentum quantum numbers 1l(j) and 3l(j), and note some relations and selection rules that may be useful in the spectroscopic classification of orbital excitations. C1 OAK RIDGE NATL LAB,CTR COMPUTAT INTENS PHYS,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. RUTHERFORD APPLETON LAB,DIV THEORY,DIDCOT OX11 0QX,OXON,ENGLAND. RP ACKLEH, ES (reprint author), UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996, USA. NR 46 TC 10 Z9 10 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 1992 VL 46 IS 5 BP 2257 EP 2260 DI 10.1103/PhysRevD.46.2257 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200045 ER PT J AU BABU, KS CHANG, D KEUNG, WY PHILLIPS, I AF BABU, KS CHANG, D KEUNG, WY PHILLIPS, I TI SIMPLE MECHANISMS FOR LARGE NEUTRINO MAGNETIC-MOMENTS SO PHYSICAL REVIEW D LA English DT Note AB We show that the simple Zee model of the neutrino mass already incorporates the interesting prediction of a large transitional neutrino magnetic moment. C1 NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60680. RP BABU, KS (reprint author), UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716, USA. NR 10 TC 3 Z9 3 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 1992 VL 46 IS 5 BP 2268 EP 2269 DI 10.1103/PhysRevD.46.2268 PG 2 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200048 ER PT J AU CHANG, D KEUNG, WY PHILLIPS, I YUAN, TC AF CHANG, D KEUNG, WY PHILLIPS, I YUAN, TC TI ANOMALOUS DIMENSIONS FOR ALL DIMENSION-8 CP-ODD OPERATORS WITH ONLY PHOTONS AND GLUONS SO PHYSICAL REVIEW D LA English DT Note ID ELECTRIC-DIPOLE MOMENT AB We calculate the anomalous dimensions of the complete set of CP-odd (dimension-8) operators involving only field strengths of the photon and the gluon. Some of our results disagree with those in the literature. The phenomenology of these operators is also briefly discussed. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60680. RP CHANG, D (reprint author), NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208, USA. NR 8 TC 3 Z9 3 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 1992 VL 46 IS 5 BP 2270 EP 2271 DI 10.1103/PhysRevD.46.2270 PG 2 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200049 ER PT J AU ABE, F AMIDEI, D ANWAYWIESE, C APOLLINARI, G ATAC, M AUCHINCLOSS, P BADEN, AR BACCHETTA, N BADGETT, W BAILEY, MW BAMBERGER, A DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BERETVAS, A BERGE, JP BERTOLUCCI, S BHADRA, S BINKLEY, M BISELLO, D BLAIR, R BLOCKER, C BODEK, A BOLOGNESI, V BOOTH, AW BOSWELL, C BRANDENBURG, G BROWN, D BUCKLEYGEER, E BUDD, HS BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CAREY, R CARITHERS, W CARLSMITH, D CARROLL, JT CASHMORE, R CASTRO, A CERVELLI, F CHADWICK, K CHAPMAN, J CHIARELLI, G CHINOWSKY, W CIHANGIR, S CLARK, AG COBAL, M CONNOR, D CONTRERAS, M COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD CURATOLO, M DAY, C DEJONGH, F DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DERWENT, PF DEVLIN, T DIBITONTO, D DICKSON, M DRUCKER, RB EINSWEILER, K ELIAS, JE ELY, R ENO, S ERREDE, S ESPOSITO, B ETCHEGOYEN, A FARHAT, B FLAUGHER, B FOSTER, GW FRANKLIN, M FREEMAN, J FRISCH, H FUESS, T FUKUI, Y GARFINKEL, AF GAUTHIER, A GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GOLD, M GOULIANOS, K GRASSMANN, H GRIECO, GM GROSSOPILCHER, C HABER, C HAHN, SR HANDLER, R HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HESSING, T HOLLEBEEK, R HOLLOWAY, L HONG, S HU, P HUBBARD, B HUFFMAN, BT HUGHES, R HURST, P HUTH, J HYLEN, J INCAGLI, M INO, T ISO, H JENSEN, H JESSOP, CP JOHNSON, RP JOSHI, U KADEL, RW KAMON, T KANDA, S KARDELIS, DA KARLINER, I KEARNS, E KEEBLE, L KEPHART, R KESTEN, P KEUP, RM KEUTELIAN, H KIM, D KIM, SB KIM, SH KIM, YK KIRSCH, L KONDO, K KONIGSBERG, J KOVACS, E KRASBERG, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LEONE, S LEWIS, JD LI, W LIMON, P LINDGREN, M LISS, TM LOCKYER, N LORETI, M LOW, EH LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MANGANO, M MARRINER, JP MARIOTTI, M MARKELOFF, R MARKOSKY, LA MATTINGLY, R MCINTYRE, P MENZIONE, A MEYER, T MIKAMO, S MILLER, M MIMASHI, T MISCETTI, S MISHINA, M MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T NAKAE, LF NAKANO, I NELSON, C NEWMANHOLMES, C NG, JST NINOMIYA, M NODULMAN, L OGAWA, S PAOLETTI, R PAPADIMITRIOU, V PARA, A PARE, E PARK, S PATRICK, J PAULETTA, G PESCARA, L PHILLIPS, TJ PTOHOS, F PLUNKETT, R PONDROM, L PROUDFOOT, J PUNZI, G QUARRIE, D RAGAN, K REDLINGER, G RHOADES, J ROACH, M RIMONDI, F RISTORI, L ROBERTSON, WJ RODRIGO, T ROHALY, T ROODMAN, A SAKUMOTO, WK SANSONI, A SARD, RD SAVOYNAVARRO, A SCARPINE, V SCHLABACH, P SCHMIDT, EE SCHNEIDER, O SCHUB, MH SCHWITTERS, R SCRIBANO, A SEGLER, S SEIYA, Y SHAPIRO, M SHAW, NM SHEAFF, M SHOCHET, M SIEGRIST, J SINERVO, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPAHN, M SPHICAS, P STDENIS, R STEFANINI, A SULLIVAN, G SWARTZ, RL TAKANO, M TAKIKAWA, K TAREM, S TARTARELLI, F TETHER, S THERIOT, D TIMKO, M TIPTON, P TKACZYK, S TOLLESTRUP, A TONNISON, J TRISCHUK, W TURINI, N TSAY, Y UKEGAWA, F UNDERWOOD, D VEJCIK, S VIDAL, R WAGNER, RG WAGNER, RL WAINER, N WALSH, J WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WHITE, SN WICKLUND, AB WICKLUND, E WILLIAMS, HH WINER, BL WU, D WYSS, J YAGIL, A YASUOKA, K YEH, GP YOH, J YOKOYAMA, M YUN, JC ZANETTI, A ZETTI, F ZHANG, S ZUCCHELLI, S AF ABE, F AMIDEI, D ANWAYWIESE, C APOLLINARI, G ATAC, M AUCHINCLOSS, P BADEN, AR BACCHETTA, N BADGETT, W BAILEY, MW BAMBERGER, A DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BERETVAS, A BERGE, JP BERTOLUCCI, S BHADRA, S BINKLEY, M BISELLO, D BLAIR, R BLOCKER, C BODEK, A BOLOGNESI, V BOOTH, AW BOSWELL, C BRANDENBURG, G BROWN, D BUCKLEYGEER, E BUDD, HS BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CAREY, R CARITHERS, W CARLSMITH, D CARROLL, JT CASHMORE, R CASTRO, A CERVELLI, F CHADWICK, K CHAPMAN, J CHIARELLI, G CHINOWSKY, W CIHANGIR, S CLARK, AG COBAL, M CONNOR, D CONTRERAS, M COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD CURATOLO, M DAY, C DEJONGH, F DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DERWENT, PF DEVLIN, T DIBITONTO, D DICKSON, M DRUCKER, RB EINSWEILER, K ELIAS, JE ELY, R ENO, S ERREDE, S ESPOSITO, B ETCHEGOYEN, A FARHAT, B FLAUGHER, B FOSTER, GW FRANKLIN, M FREEMAN, J FRISCH, H FUESS, T FUKUI, Y GARFINKEL, AF GAUTHIER, A GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GOLD, M GOULIANOS, K GRASSMANN, H GRIECO, GM GROSSOPILCHER, C HABER, C HAHN, SR HANDLER, R HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HESSING, T HOLLEBEEK, R HOLLOWAY, L HONG, S HU, P HUBBARD, B HUFFMAN, BT HUGHES, R HURST, P HUTH, J HYLEN, J INCAGLI, M INO, T ISO, H JENSEN, H JESSOP, CP JOHNSON, RP JOSHI, U KADEL, RW KAMON, T KANDA, S KARDELIS, DA KARLINER, I KEARNS, E KEEBLE, L KEPHART, R KESTEN, P KEUP, RM KEUTELIAN, H KIM, D KIM, SB KIM, SH KIM, YK KIRSCH, L KONDO, K KONIGSBERG, J KOVACS, E KRASBERG, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LEONE, S LEWIS, JD LI, W LIMON, P LINDGREN, M LISS, TM LOCKYER, N LORETI, M LOW, EH LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MANGANO, M MARRINER, JP MARIOTTI, M MARKELOFF, R MARKOSKY, LA MATTINGLY, R MCINTYRE, P MENZIONE, A MEYER, T MIKAMO, S MILLER, M MIMASHI, T MISCETTI, S MISHINA, M MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T NAKAE, LF NAKANO, I NELSON, C NEWMANHOLMES, C NG, JST NINOMIYA, M NODULMAN, L OGAWA, S PAOLETTI, R PAPADIMITRIOU, V PARA, A PARE, E PARK, S PATRICK, J PAULETTA, G PESCARA, L PHILLIPS, TJ PTOHOS, F PLUNKETT, R PONDROM, L PROUDFOOT, J PUNZI, G QUARRIE, D RAGAN, K REDLINGER, G RHOADES, J ROACH, M RIMONDI, F RISTORI, L ROBERTSON, WJ RODRIGO, T ROHALY, T ROODMAN, A SAKUMOTO, WK SANSONI, A SARD, RD SAVOYNAVARRO, A SCARPINE, V SCHLABACH, P SCHMIDT, EE SCHNEIDER, O SCHUB, MH SCHWITTERS, R SCRIBANO, A SEGLER, S SEIYA, Y SHAPIRO, M SHAW, NM SHEAFF, M SHOCHET, M SIEGRIST, J SINERVO, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPAHN, M SPHICAS, P STDENIS, R STEFANINI, A SULLIVAN, G SWARTZ, RL TAKANO, M TAKIKAWA, K TAREM, S TARTARELLI, F TETHER, S THERIOT, D TIMKO, M TIPTON, P TKACZYK, S TOLLESTRUP, A TONNISON, J TRISCHUK, W TURINI, N TSAY, Y UKEGAWA, F UNDERWOOD, D VEJCIK, S VIDAL, R WAGNER, RG WAGNER, RL WAINER, N WALSH, J WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WHITE, SN WICKLUND, AB WICKLUND, E WILLIAMS, HH WINER, BL WU, D WYSS, J YAGIL, A YASUOKA, K YEH, GP YOH, J YOKOYAMA, M YUN, JC ZANETTI, A ZETTI, F ZHANG, S ZUCCHELLI, S TI LIMITS ON THE PRODUCTION OF MASSIVE STABLE CHARGED-PARTICLES SO PHYSICAL REVIEW D LA English DT Note ID STANDARD MODEL; HIGHER DIMENSIONS; MIRROR FERMIONS; Z0 DECAYS; SEARCH; LEPTONS; COLLISIONS; SYMMETRY; PHYSICS; SUPERSYMMETRY AB We present improved limits on the production of massive stable charged particles in ppBAR collisions using the Collider Detector at Fermilab based on an integrated luminosity of 3.54 pb-1. Both unit and fractionally charged particles are considered. Cross-section upper limits are determined for masses from 50 to 500 GeV/c2. Theoretical cross sections are used to set bounds on the mass of fermionic color triplets, sextets, octets, and decuplets as well as scalar triplets. C1 ARGONNE NATL LAB, ARGONNE, IL 60439 USA. UNIV CALIF LOS ANGELES, LOS ANGELES, CA 90024 USA. UNIV CHICAGO, CHICAGO, IL 60637 USA. DUKE UNIV, DURHAM, NC 27706 USA. FERMI NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA. IST NAZL FIS NUCL, NAZL FRASCATI LAB, FRASCATI, ITALY. HARVARD UNIV, CAMBRIDGE, MA 02138 USA. UNIV ILLINOIS, URBANA, IL 61801 USA. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. MIT, CAMBRIDGE, MA 02139 USA. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. UNIV PADUA, IST NAZL FIS NUCL, I-35131 PADUA, ITALY. UNIV PENN, PHILADELPHIA, PA 19104 USA. UNIV PISA, IST NAZL FIS NUCL, I-56100 PISA, ITALY. SCUOLA NORMALE SUPER PISA, I-56100 PISA, ITALY. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. UNIV ROCHESTER, ROCHESTER, NY 14627 USA. ROCKEFELLER UNIV, NEW YORK, NY 10021 USA. RUTGERS STATE UNIV, NEW BRUNSWICK, NJ 08903 USA. TEXAS A&M UNIV SYST, COLL STN, TX 77843 USA. UNIV TSUKUBA, TSUKUBA, IBARAKI 305, JAPAN. TUFTS UNIV, MEDFORD, MA 02155 USA. UNIV WISCONSIN, MADISON, WI 53706 USA. RP ABE, F (reprint author), NATL LAB HIGH ENERGY PHYS, OHO, IBARAKI 305, JAPAN. RI St.Denis, Richard/C-8997-2012; Chiarelli, Giorgio/E-8953-2012; Punzi, Giovanni/J-4947-2012; Kim, Soo-Bong/B-7061-2014 OI Chiarelli, Giorgio/0000-0001-9851-4816; Punzi, Giovanni/0000-0002-8346-9052; NR 49 TC 30 Z9 30 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 1992 VL 46 IS 5 BP R1889 EP R1894 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200001 ER PT J AU BERGER, EL MENG, RB TUNG, WK AF BERGER, EL MENG, RB TUNG, WK TI IMPLICATIONS OF BOTTOM-QUARK CROSS-SECTION DATA AT HADRON COLLIDER ENERGIES SO PHYSICAL REVIEW D LA English DT Note ID INELASTIC MUON SCATTERING; QCD CORRECTIONS; HIGH Q2; COLLISIONS; PROTON AB In next-to-leading-order [O(alpha(s)3)] quantum chromodynamics, gluon-gluon interactions are the dominant mechanism for the production of bottom quarks at CERN and Fermilab hadron collider energies at values Of momentum transfer currently accessible. There is a notable discrepancy between th, data from the Collider Detector at Fermilab and existing O(alpha(s)3) theoretical calculations. Using these data, in conjunction with data from deep-inelastic lepton scattering, we show that it is possible to determine a new gluon density whose shape differs substantially from that derived from previous fits to data. Other implications of the data are discussed. C1 IIT,DEPT PHYS,CHICAGO,IL 60616. RP BERGER, EL (reprint author), ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439, USA. NR 19 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 1992 VL 46 IS 5 BP R1895 EP R1899 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200002 ER PT J AU BODWIN, GT BRAATEN, E LEPAGE, GP AF BODWIN, GT BRAATEN, E LEPAGE, GP TI RIGOROUS QCD PREDICTIONS FOR DECAYS OF P-WAVE QUARKONIA SO PHYSICAL REVIEW D LA English DT Note ID ANTIQUARK BOUND-STATES; ANNIHILATION AB Rigorous QCD predictions for the decay rates of the P-wave states of heavy quarkonia are presented. They are based on a new factorization theorem which is valid to leading order in the heavy-quark velocity and to all orders in the running coupling constant of QCD. The decay rates for all four P states into light-hadronic or electromagnetic final states axe expressed in terms of two phenomenological parameters, whose coefficients axe perturbatively calculable. Logarithms of the binding energy encountered in previous perturbative calculations of P-wave decays are factored into a phenomenological parameter that is related to the probability for the heavy-quark-antiquark pair to be in a color-octet S-wave state. Applying these predictions to charmonium, we use measured decay rates for the chi(c1) and chi(c2) to predict the decay rates of the chi(c0) and h(c). C1 NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208. CORNELL UNIV,NEWMAN LAB NUCL STUDIES,ITHACA,NY 14853. RP BODWIN, GT (reprint author), ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439, USA. NR 18 TC 189 Z9 189 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 1992 VL 46 IS 5 BP R1914 EP R1918 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JK882 UT WOS:A1992JK88200007 ER PT J AU BUKIET, BG MENIKOFF, R AF BUKIET, BG MENIKOFF, R TI DETONATION-WAVES AND THE FRONT TRACKING METHOD SO PHYSICS OF FLUIDS A-FLUID DYNAMICS LA English DT Article ID DIMENSIONAL DETONATIONS; NUMERICAL STRUCTURE; SHOCK DYNAMICS; CURVATURE AB Detonation waves dominate the fluid flow in an explosive material. For numerical simulations, there is a need to account for the important properties of a propagating detonation wave without the fine grid necessary to resolve the very narrow reaction zone. The effects of the dynamics within the reaction zone on the fluid state behind the detonation wave are discussed. In contrast to a shock wave, the behavior of a detonation wave depends on the front curvature. Moreover, the flow behind a diverging underdriven detonation wave is supersonic relative to the front. This leads to composite waves and split waves which are analogous to those that occur for a fluid with a nonconvex equation of state. The wave structure and the wave curve for both converging and diverging detonation waves are described. The wave curve allows numerical calculations using the front tracking method to model multidimensional detonation problems. Implementing the analytic wave structure in numerical calculations is discussed. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP BUKIET, BG (reprint author), NEW JERSEY INST TECHNOL,CTR APPL MATH & STAT,DEPT MATH,NEWARK,NJ 07102, USA. NR 51 TC 7 Z9 7 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8213 J9 PHYS FLUIDS A-FLUID PD SEP PY 1992 VL 4 IS 9 BP 2070 EP 2081 DI 10.1063/1.858377 PG 12 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA JL123 UT WOS:A1992JL12300021 ER PT J AU KONIGES, AE CROTINGER, JA DIAMOND, PH AF KONIGES, AE CROTINGER, JA DIAMOND, PH TI STRUCTURE FORMATION AND TRANSPORT IN DISSIPATIVE DRIFT-WAVE TURBULENCE SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID SIMULATED PLASMA TURBULENCE; TWO-DIMENSIONAL TURBULENCE; NUMERICAL-SIMULATION; COHERENT STRUCTURES AB Numerical flow simulations are used to study the effect of coherent structures on transport in the context of a two-field, two-dimensional model of dissipative drift-wave turbulence. The presence and nature of structures are found to depend on the adiabaticity parameter alpha = k(parallel-to)2 V(T)2/2-nu(ei)omega(s) which controls the degree to which the electrons respond to parallel electric fields. Transport estimates based on quasilinear and mixing-length models are compared with the simulations. In the regime with long-lived coherent structures, the turbulent particle transport predicted by a standard quasilinear or mean-field estimate is found to exceed that actually observed in the presence of coherent structures. C1 UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093. RP KONIGES, AE (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 20 TC 57 Z9 57 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2785 EP 2793 DI 10.1063/1.860151 PG 9 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500015 ER PT J AU WILKS, SC KRUER, WL ESTABROOK, K LANGDON, AB AF WILKS, SC KRUER, WL ESTABROOK, K LANGDON, AB TI THEORY AND SIMULATION OF STIMULATED RAMAN SCATTER AT NEAR-FORWARD ANGLES SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID LASER-IRRADIATED PLASMAS; BRILLOUIN AB Computer simulations in two dimensions of Raman near-forward scatter are presented to show the linear and nonlinear behavior of this instability in a high-temperature, low-density plasma. Modifications to one-dimensional theory are discussed, as is the angular dependence of the spatial growth rate. In the simulations, the amount of laser energy scattered into various angles is examined and the subsequent heating of the electrons is discussed. Results with mobile ions are presented as well. It is found that, for the strongly driven parameter regime examined, some stimulated Brillouin scattering is observed early in time until the ions heat up and quench the instability. However, the ion motion does not substantially change the level of stimulated Raman scattered light in these simulations. RP WILKS, SC (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 14 TC 16 Z9 17 U1 1 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2794 EP 2800 DI 10.1063/1.860152 PG 7 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500016 ER PT J AU HAHM, TS AF HAHM, TS TI FLOW-SHEAR-INDUCED COMPTON-SCATTERING OF ELECTRON-DRIFT INSTABILITY SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID H-MODE PLASMAS; POLOIDAL ROTATION; WAVE TURBULENCE; MAGNETIC-FIELD; TOKAMAKS; TRANSITION; SATURATION; TRANSPORT; MOMENTUM AB Plasma flow-shear effects on nonlinear saturation of electron drift waves are analyzed in t weak turbulence regime. Flow shear can enhance ion Compton scattering of long-wavelength electron drift waves not only by modifying the beat wave-ion resonance condition, but also via the radial dependence of linear susceptibility. A nonlinear dispersion relation is obtained as a solution of the radially nonlocal nonlinear eigenmode equation. At nonlinear saturation, the spectral intensity of the fluctuations scales with flow shear as (partial derivative V 0-phi/partial derivative r)-2 in addition to the linear dependence on the linear growth rate, and decays according to a power law k(theta)-1. RP HAHM, TS (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543, USA. NR 37 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 SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2801 EP 2806 DI 10.1063/1.860153 PG 6 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500017 ER PT J AU CROTINGER, JA DUPREE, TH AF CROTINGER, JA DUPREE, TH TI TRAPPED STRUCTURES IN DRIFT WAVE TURBULENCE SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID MAGNETIZED NONUNIFORM PLASMA; SPACE DENSITY HOLES; NUMERICAL SIMULATION; INCOMPRESSIBLE FLOWS; ANOMALOUS TRANSPORT; SIMPLE BOUNDARIES; DYNAMICS; VORTICES; GROWTH AB The development of trapped structures in decaying and saturated drift wave turbulence is studied via computer simulation. A two-dimensional electrostatic fluid model is used. The turbulence that evolves in the pure decay runs (i.e., no nonadiabatic electrons) is characterized by tightly bound monopole vortices and a very narrow frequency spectrum. For the studies of saturated turbulence, a new nonadiabatic electron model is introduced, which gives the qualitatively correct response to a coherent trapped structure. This model takes into account the effects of broadening and shifting of the frequency spectrum. These effects are found to be quite important. Trapped structures are observed in many of the saturated simulations, even in the presence of moderately broad frequency spectra. The extent of the trapping varies dramatically, becoming a much stronger effect as the average electric field increases. C1 MIT, CAMBRIDGE, MA 02139 USA. RP LAWRENCE LIVERMORE NATL LAB, POB 808, LIVERMORE, CA 94550 USA. NR 35 TC 43 Z9 43 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2854 EP 2870 DI 10.1063/1.860160 PG 17 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500024 ER PT J AU DOMINGUEZ, N CARRERAS, BA LYNCH, VE DIAMOND, PH AF DOMINGUEZ, N CARRERAS, BA LYNCH, VE DIAMOND, PH TI DISSIPATIVE TRAPPED ELECTRON MODES IN L=2 TORSATRONS SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID DRIFT WAVES; PLASMA; STELLARATOR; SHEAR AB Trapped electron modes could play an important role in enhancing losses in a toroidal confinement device. However, no direct evidence of these instabilities has been found in such devices. The dissipative trapped electron modes [Sov. Phys. Dokl. 14, 470 (1969)] in l=2 torsatrons using the high-n ballooning formalism and considering the full three-dimensional geometry are studied. Using a perturbative analysis, it is found that there are toroidally localized as well as helically localized eigenfunctions in the ballooning space for these nonaxisymmetric devices. The helically localized eigenfunctions give the largest growth rates. It is shown that the helical symmetric limit gives a very good description of the helically induced modes for stellarators such as the Advanced Toroidal Facility [Fusion Technol. 10, 179 (1986)]. In this limit, the criteria for the density gradient and the temperature gradient for the existence of the dissipative trapped electron modes in l=2 stellarators are found. Also, it is found that the radial width of the unstable modes can be very broad, and therefore their effects could possibly be detected in future experimental studies with density control. C1 UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA. RP DOMINGUEZ, N (reprint author), OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. RI Lynch, Vickie/J-4647-2012 OI Lynch, Vickie/0000-0002-5836-7636 NR 20 TC 27 Z9 27 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2894 EP 2906 DI 10.1063/1.860162 PG 13 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500027 ER PT J AU MILLER, RH WINSKE, D GARY, SP AF MILLER, RH WINSKE, D GARY, SP TI A 2ND-ORDER THEORY FOR TRANSVERSE ION HEATING AND MOMENTUM COUPLING DUE TO ELECTROSTATIC ION-CYCLOTRON WAVES SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID BOW SHOCK; MULTICOMPONENT PLASMAS; HYDROGEN CYCLOTRON; INSTABILITIES; BEAM; MAGNETOTAIL; GENERATION; DRIVEN; NOISE; ACCELERATION AB A second-order theory for electrostatic instabilities driven by counterstreaming ion beams is developed which describes momentum coupling and heating of the plasma via wave-particle interactions. Exchange rates between the waves and particles are derived, which are suitable for the fluid equations simulating microscopic effects on macroscopic scales. Using a fully kinetic simulation, the electrostatic ion cyclotron instability due to counterstreaming H+ beams has been simulated. A power spectrum from the kinetic simulation is used to evaluate second-order exchange rates. The calculated heating and momentum loss from second-order theory is compared to the numerical simulation. C1 LOS ALAMOS NATL LAB,DIV APPL THEORET PHYS,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV SPACE & SCI TECHNOL,LOS ALAMOS,NM 87545. RP MILLER, RH (reprint author), UNIV MICHIGAN,DEPT ATMOSPHER OCEAN & SPACE SCI,SPACE PHYS RES LAB,ANN ARBOR,MI 48109, USA. NR 44 TC 6 Z9 6 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2964 EP 2974 DI 10.1063/1.860135 PG 11 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500035 ER PT J AU PULLIAM, RJ JOHNSON, LR AF PULLIAM, RJ JOHNSON, LR TI WHAT PATTERNS OF HETEROGENEITY IN THE EARTHS MANTLE CAN BE REVEALED BY SEISMIC TRAVEL TIME TOMOGRAPHY SO PHYSICS OF THE EARTH AND PLANETARY INTERIORS LA English DT Article ID PROJECTION AB We investigate which patterns of seismic heterogeneity in the mantle would be returned reliably by a tomographic inversion in which the model mantle is parametrized by a set of discrete, non-overlapping voxels. We construct synthetic data sets based on real ray sampling of the mantle by introducing spherical harmonic patterns of velocity heterogeneity and perform inversions of the synthetic data. We expand the resulting voxel model in spherical harmonics and compare the power at each degree and in each model layer with the input spherical harmonics in order to determine which patterns produced by inversions of real data may be deemed reliable and to identify patterns which must be viewed with skepticism. We find that while the power input to a particular pattern of heterogeneity in the 0-200 km layer is generally recovered accurately, the pattern itself is poorly determined in this layer. A pattern in the 200-400 km layer is more precisely determined though the power contained in the pattern is consistently underestimated and more leakage occurs to the layers above and below. The transition zone, 400-670 km, shows similarly strong control of lateral heterogeneity patterns but tests return a more accurate estimate of input power than for the second layer. The l = 2, 4, and 6 components all show accurate recovery in the 400-670 km layer. This result supports previous findings, from inversions with real data, that l = 2 is a significant pattern of heterogeneity in the mantle's transition zone and that l = 4 is not a significant pattern. For the entire upper mantle, l = 6 would be retrieved reliably and its constructive behavior in upper mantle models derived with real data is confirmed. These tests also demonstrate the inability of our inversion procedure to retrieve shorter wavelength features in the lower mantle. The results for our lowermost layer, D", must be considered suspect due to the inadequate constraints placed on model values by our ray coverage and the sensitivity of these results to noise in the data. C1 UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,CTR COMP SEISMOL,BERKELEY,CA 94720. OI Pulliam, Robert/0000-0001-7661-359X NR 13 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-9201 J9 PHYS EARTH PLANET IN JI Phys. Earth Planet. Inter. PD SEP PY 1992 VL 73 IS 1-2 BP 109 EP 151 DI 10.1016/0031-9201(92)90110-H PG 43 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA JP755 UT WOS:A1992JP75500007 ER PT J AU LINDL, JD MCCRORY, RL CAMPBELL, EM AF LINDL, JD MCCRORY, RL CAMPBELL, EM TI PROGRESS TOWARD IGNITION AND BURN PROPAGATION IN INERTIAL CONFINEMENT FUSION SO PHYSICS TODAY LA English DT Article ID LASER FUSION; GROWTH; COMPRESSION; INSTABILITY; RADIATION; PLASMA C1 UNIV ROCHESTER,LASER ENERGET LAB,ROCHESTER,NY 14627. RP LINDL, JD (reprint author), LAWRENCE LIVERMORE NATL LAB,ICF TARGET PHYS PROGRAM,LIVERMORE,CA 94550, USA. NR 24 TC 269 Z9 283 U1 5 U2 24 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 32 EP 40 DI 10.1063/1.881318 PG 9 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500007 ER PT J AU HOGAN, WJ BANGERTER, R KULCINSKI, GL AF HOGAN, WJ BANGERTER, R KULCINSKI, GL TI ENERGY FROM INERTIAL FUSION SO PHYSICS TODAY LA English DT Article ID REACTOR C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV WISCONSIN,INST FUS TECHNOL,MADISON,WI 53706. RP HOGAN, WJ (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 18 TC 30 Z9 30 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 42 EP 50 DI 10.1063/1.881319 PG 9 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500008 ER PT J AU BERKNER, K KUNKEL, W RUBY, L AF BERKNER, K KUNKEL, W RUBY, L TI PYLE,ROBERT,V. - OBITUARY SO PHYSICS TODAY LA English DT Item About an Individual C1 REED COLL,PORTLAND,OR 97202. RP BERKNER, K (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, 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 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 86 EP 88 DI 10.1063/1.2809815 PG 3 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500015 ER PT J AU CREIGHTON, JR HISKES, JR MCMURPHY, FE HARDY, JR AF CREIGHTON, JR HISKES, JR MCMURPHY, FE HARDY, JR TI KARO,ARNOLD,M. - OBITUARY SO PHYSICS TODAY LA English DT Item About an Individual C1 UNIV NEBRASKA,LINCOLN,NE 68588. RP CREIGHTON, JR (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 88 EP 88 DI 10.1063/1.2809817 PG 1 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500017 ER PT J AU LEDERMAN, L AF LEDERMAN, L TI TO AID TEACHERS, FIX THE BUREAUCRACY - REPLY SO PHYSICS TODAY LA English DT Letter RP LEDERMAN, L (reprint author), FERMI NATL ACCELERATOR LAB,BATAVIA,IL, 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 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 100 EP 101 PG 2 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500024 ER PT J AU CORDEY, JG GOLDSTON, RJ PARKER, RR AF CORDEY, JG GOLDSTON, RJ PARKER, RR TI CAN A TOKAMAK BREED ENOUGH TRITIUM - REPLY SO PHYSICS TODAY LA English DT Letter C1 PRINCETON PLASMA PHYS LAB,PRINCETON,NJ. MIT,CAMBRIDGE,MA 02139. RP CORDEY, JG (reprint author), JOINT EUROPEAN TORUS,ABINGDON,OXON,ENGLAND. 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 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1992 VL 45 IS 9 BP 101 EP 101 PG 1 WC Physics, Multidisciplinary SC Physics GA JM395 UT WOS:A1992JM39500026 ER PT J AU RHOADS, DM MCINTOSH, L AF RHOADS, DM MCINTOSH, L TI SALICYLIC-ACID REGULATION OF RESPIRATION IN HIGHER-PLANTS - ALTERNATIVE OXIDASE EXPRESSION SO PLANT CELL LA English DT Article ID COMPLETE NUCLEOTIDE-SEQUENCE; SAUROMATUM-GUTTATUM SCHOTT; ISOLATED WHEAT NUCLEI; SALICYLIC-ACID; RESISTANCE RESPONSE; HEAT-PRODUCTION; MITOCHONDRIA; PROTEIN; IDENTIFICATION; TRANSCRIPTION AB Alternative respiratory pathway capacity increases during the development of the thermogenic appendix of a voodoo lily inflorescence. The levels of the alternative oxidase proteins increased dramatically between D-4 (4 days prior to the day of anthesis) and D-3 and continued to increase until the day of anthesis (D-day). The level of salicylic acid (SA) in the appendix is very low early on D-1, but increases to a high level in the evening of D-1. Thermogenesis occurs after a few hours of light on D-day. Therefore, the initial accumulation of the alternative oxidase proteins precedes the increase in SA by 3 days, indicating that other regulators may be involved. A 1.6-kb transcript encoding the alternative oxidase precursor protein accumulated to a high level in the appendix tissue by D-1. Application of SA to immature appendix tissue caused an increase in alternative pathway capacity and a dramatic accumulation of the alternative oxidase proteins and the 1.6-kb transcript. Time course experiments showed that the increase in capacity, protein levels, and transcript level corresponded precisely. The response to SA was blocked by cycloheximide or actinomycin D, indicating that de novo transcription and translation are required. However, nuclear, in vitro transcription assays indicated that the accumulation of the 1.6-kb transcript did not result from a simple increase in the rate of transcription of aox1. C1 MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824. MICHIGAN STATE UNIV,DEPT BIOCHEM,E LANSING,MI 48824. NR 34 TC 117 Z9 122 U1 0 U2 4 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 1040-4651 J9 PLANT CELL JI Plant Cell PD SEP PY 1992 VL 4 IS 9 BP 1131 EP 1139 PG 9 WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology GA JP093 UT WOS:A1992JP09300013 ER PT J AU POFF, KL AF POFF, KL TI WHAT REMAINS OF THE CHOLODNY-WENT THEORY - PRESENT STATUS SO PLANT CELL AND ENVIRONMENT LA English DT Article RP POFF, KL (reprint author), MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824, USA. FU NIDCR NIH HHS [DE-FG02-90-ER20021] NR 6 TC 0 Z9 0 U1 0 U2 2 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0140-7791 J9 PLANT CELL ENVIRON JI Plant Cell Environ. PD SEP PY 1992 VL 15 IS 7 BP 781 EP 781 PG 1 WC Plant Sciences SC Plant Sciences GA JN644 UT WOS:A1992JN64400012 PM 11541811 ER PT J AU WILSON, RN HECKMAN, JW SOMERVILLE, CR AF WILSON, RN HECKMAN, JW SOMERVILLE, CR TI GIBBERELLIN IS REQUIRED FOR FLOWERING IN ARABIDOPSIS-THALIANA UNDER SHORT DAYS SO PLANT PHYSIOLOGY LA English DT Article ID L HEYNH; REPRODUCTIVE DEVELOPMENT; MUTANT; LOCUS AB Mutants of Arabidopsis thaliana deficient in gibberellin synthesis (ga1-3 and ga1-6), and a gibberellin-insensitive mutant (gai) were compared to the wild-type (WT) Landsberg erecta line for flowering time and leaf number when grown in either short days (SD) or continuous light (CL). The ga1-3 mutant, which is severely defective in ent-kaurene synthesis because it lacks most of the GA1 gene, never flowered in SD unless treated with exogenous gibberellin. After a prolonged period of vegetative growth, this mutant eventually underwent senescence without having produced flower buds. The gai mutant and the "leaky" ga1-6 mutant did flower in SD, but took somewhat longer than WT. All the mutants flowered readily in CL, although the ga1-3 mutant showed some delay. Unlike WT and ga1-3, the gai mutant failed to respond to gibberellin treatment by accelerating flowering in SD. A cold treatment promoted flowering in the WT and gai, but failed to induce flowering in ga1-3. From these results, it appears that gibberellin normally plays a role in initiating flowering of Arabidopsis. C1 MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824. RI Somerville, Christopher/A-4048-2009 OI Somerville, Christopher/0000-0003-4647-0094 NR 18 TC 341 Z9 371 U1 5 U2 51 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD SEP PY 1992 VL 100 IS 1 BP 403 EP 408 DI 10.1104/pp.100.1.403 PG 6 WC Plant Sciences SC Plant Sciences GA JR211 UT WOS:A1992JR21100058 PM 16652976 ER PT J AU RAMSHAW, JD CHANG, CH AF RAMSHAW, JD CHANG, CH TI COMPUTATIONAL FLUID-DYNAMICS MODELING OF MULTICOMPONENT THERMAL PLASMAS SO PLASMA CHEMISTRY AND PLASMA PROCESSING LA English DT Article DE THERMAL PLASMAS; PLASMA PROCESSING; MULTICOMPONENT; CHEMISTRY; DIFFUSION ID PARTIAL EQUILIBRIUM-FLOW; CHEMICAL-REACTIONS; JETS; THERMOCHEMISTRY; PREDICTIONS; SCHEME AB A comprehensive computational model has been developed for flowing thermal plasmas in the absence of electromagnetic fields, with particular emphasis on plasma jets. The plasma is represented as a multicomponent chemically reacting ideal gas with temperature-dependent thermodynamic and transport properties. The plasma flow is governed by the transient compressible Navier-Stokes equations in two or three space dimensions. Turbulence is represented by subgrid-scale and k-epsilon models. Species diffusion is calculated by an effective binary diffusion approximation, generalized to allow for ambipolar diffusion of charged species. Ionization, dissociation, recombination, and other chemical reactions are computed by general kinetic and equilibrium chemistry algorithms. Radiation heat loss is currently modeled as a temperature-dependent energy sink. Finite-difference approximations to the governing equations are solved on a rectangular spatial mesh using explicit temporal differencing. Computational inefficiency at low Mach number is avoided by reducing the effective sound speed. The overall computational model is embodied in a new computer code called LAVA. Computational results and comparisons with experimental data are presented for LAVA simulations of a steady-state axisymmetric argon plasma jet flowing into cold argon. RP RAMSHAW, JD (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 31 TC 72 Z9 72 U1 0 U2 17 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4324 J9 PLASMA CHEM PLASMA P JI Plasma Chem. Plasma Process. PD SEP PY 1992 VL 12 IS 3 BP 299 EP 325 DI 10.1007/BF01447028 PG 27 WC Engineering, Chemical; Physics, Applied; Physics, Fluids & Plasmas SC Engineering; Physics GA JD627 UT WOS:A1992JD62700006 ER PT J AU PFEFFER, GA SUMPTER, BG NOID, DW AF PFEFFER, GA SUMPTER, BG NOID, DW TI CONFORMATIONAL-CHANGES IN A POLYETHYLENE MODEL UNDER TENSION AND COMPRESSION SO POLYMER ENGINEERING AND SCIENCE LA English DT Article ID MOLECULAR-DYNAMICS SIMULATIONS; RAMAN-SPECTROSCOPY; STRESSED POLYETHYLENE; DEFORMATION; POLYPROPYLENE; POLYMERS; FIBERS; RELAXATION; PREDICTION; CRYSTAL AB Using a realistic model for polyethylene (PE), the molecular dynamics technique is used to simulate atomic motion in a crystal. The calculations reveal conformational disorder above a critical temperature. The rate of isomerization computed from molecular dynamics is compared to transition-state theory and leads to an activation energy under stress of approximately 30 kJ/mol, 15 kJ/mol above the single-bond rotation value. In the unstressed case, the activation energy for the process is less. C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. RP PFEFFER, GA (reprint author), UNIV NEBRASKA,DEPT CHEM,OMAHA,NE 68182, USA. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 35 TC 2 Z9 2 U1 0 U2 3 PU SOC PLASTICS ENG INC PI BROOKFIELD CENTER PA 14 FAIRFIELD DR, BROOKFIELD CENTER, CT 06804-0403 SN 0032-3888 J9 POLYM ENG SCI JI Polym. Eng. Sci. PD SEP PY 1992 VL 32 IS 17 BP 1278 EP 1285 DI 10.1002/pen.760321715 PG 8 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA JN205 UT WOS:A1992JN20500014 ER PT J AU WASIELEWSKI, MR ONEIL, MP GOSZTOLA, D NIEMCZYK, MP SVEC, WA AF WASIELEWSKI, MR ONEIL, MP GOSZTOLA, D NIEMCZYK, MP SVEC, WA TI ULTRAFAST PHOTOINDUCED ELECTRON-TRANSFER REACTIONS IN SUPRAMOLECULAR ARRAYS - FROM CHARGE SEPARATION AND STORAGE TO MOLECULAR SWITCHES SO PURE AND APPLIED CHEMISTRY LA English DT Article; Proceedings Paper CT 14TH INTERNATIONAL SYMP ON PHOTOCHEMISTRY CY JUL 19-25, 1992 CL LOUVAIN, BELGIUM SP INT UNION PURE & APPL CHEM, DIV PHYS & ORGAN CHEM, EUROPEAN PHOTOCHEM ASSOC, INTER AMER PHOTOCHEM ASSOC, JAPANESE PHOTOCHEM ASSOC, KATHOLIEKE UNIV LEUVEN ID SPIN POLARIZATION; RADICAL PAIRS; BACTERIAL PHOTOSYNTHESIS; FLUORESCENT DYES; REACTION CENTERS; RESONANCE; ENERGY; STATE; MODEL; BAND AB Photochemical electron transfer reactions on a picosecond time scale have been studied in two covalently-linked donor-acceptor systems. The first molecule is a chlorophyll-porphyrin-quinone triad that closely mimics photosynthetic charge separation by undergoing picosecond electron transfer in low temperature glasses to yield a radical ion pair that lives for 2 ms and exhibits spin-polarization. The second molecule is an electron donor-acceptor-donor molecule, consisting of two porphyrin donors rigidly attached to opposite ends of the two-electron acceptor N,N'-diphenyl-3,4,9,10-perylenebis(dicarboximide). This molecule acts as a light intensity dependent molecular switch on a picosecond time scale. RP WASIELEWSKI, MR (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 29 TC 24 Z9 24 U1 0 U2 5 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0033-4545 J9 PURE APPL CHEM JI Pure Appl. Chem. PD SEP PY 1992 VL 64 IS 9 BP 1319 EP 1325 DI 10.1351/pac199264091319 PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA JN748 UT WOS:A1992JN74800017 ER PT J AU LOFFREDO, DM LIU, AD TRIFUNAC, AD AF LOFFREDO, DM LIU, AD TRIFUNAC, AD TI PHOTOIONIZATION OF POLYCYCLIC AROMATIC-HYDROCARBONS IN ALKANE SOLUTIONS - HIGH-ENERGY CHEMICAL PATHWAYS SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article ID DETECTED MAGNETIC-RESONANCE; PULSE-RADIOLYSIS; PHOTO-IONIZATION; RADICAL CATIONS; GEMINATE IONS; LIQUID; FLUORESCENCE; CYCLOHEXANE; RECOMBINATION; N,N,N',N'-TETRAMETHYL-PARA-PHENYLENEDIAMINE AB Unusual "high energy" chemical pathways can result when ionizing radiation is deposited into condensed-phase systems. In photoionization it has often been surmised that all excess energy above that needed for ionization appears as kinetic energy of the ejected electron. Alternatively, some of the excess energy could remain in the radical cation, resulting in new modes of radical cation reactivity. The multiphoton ionization of aromatic hydrocarbons (AH, e.g. anthracene) in alkane (RH, e.g. cyclohexane) solvents was carried out using intense pulsed 248 or 308 nm irradiation. Photoproducts derived from solvent radicals (e.g. bicyclohexyl) are observed, and the yields increase with increasing photon energy. Flash photolysis and transient conductivity studies were also carried out, and the relative yield of aromatic radical cations was found to decrease with increasing photon energy. Our observations suggest an alternate "high energy" pathway for aromatic radical cations. One possible pathway is proton transfer to the solvent which would lead to aryl radical formation (AH.+* + RH --> A. + RH2+). Subsequent hydrogen atom abstraction by intermediate aryl radicals (A. + RH --> AH + R.) would then result in the observed increase in solvent-derived radicals. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 25 TC 5 Z9 5 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-5724 J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD SEP PY 1992 VL 40 IS 3 BP 255 EP 262 PG 8 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA JM724 UT WOS:A1992JM72400016 ER PT J AU SMITH, DA AF SMITH, DA TI POSSIBLE CLOSURE OF THE JANUS REACTOR AT ARGONNE-NATIONAL-LABORATORY SO RADIATION RESEARCH LA English DT Letter RP SMITH, DA (reprint author), US DOE,OFF HLTH & ENVIRONM RES,DIV HLTH EFFECTS & LIFE SCI RES,ER-72,WASHINGTON,DC 20585, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD SEP PY 1992 VL 131 IS 3 BP 351 EP 351 DI 10.2307/3578427 PG 1 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA JN370 UT WOS:A1992JN37000017 PM 1438692 ER PT J AU NALESSO, GF JACOBSON, AR AF NALESSO, GF JACOBSON, AR TI ASYMPTOTIC SOLUTIONS OF THE WAVE-EQUATION FOR A 2-DIMENSIONAL IONOSPHERIC MODEL SO RADIO SCIENCE LA English DT Article ID HF RADIO-WAVES; REFLECTION REGION; PATTERN AB The propagation of HF radio waves through a stratified ionosphere perturbed by dielectric irregularities varying both horizontally and vertically is studied in this paper. A method for obtaining two-dimensional approximate solutions, complementary to the WKB approximation, is discussed and illustrated. Previous results of a one-dimensional model, showing enhanced scintillation due to irregularities localized near the turning point of the wave, are confirmed. By matching the ionosphere with an uniform atmosphere the reflection coefficient for an incoming s-polarized plane wave is calculated. The case of wave reflection by a rippled specular surface is finally derived in the limit of the ionospheric gradient length approaching zero. C1 LOS ALAMOS NATL LAB,ATMOSPHER SCI GRP,LOS ALAMOS,NM 87544. RP NALESSO, GF (reprint author), UNIV PADUA,DIPARTIMENTO ELETT & INFORMAT,VIA GRADENIGO 6A,I-35131 PADUA,ITALY. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD SEP-OCT PY 1992 VL 27 IS 5 BP 623 EP 634 DI 10.1029/92RS00925 PG 12 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA JR536 UT WOS:A1992JR53600008 ER PT J AU BENO, MA KNAPP, GS JENNINGS, G AF BENO, MA KNAPP, GS JENNINGS, G TI A NEW METHOD FOR X-RAY-POWDER DIFFRACTION STUDIES SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB A new method has been developed which results in a major improvement in count rate of Bragg-Brentano-type diffractometers. The method uses a focusing exit beam monochromator and a multichannel detector to achieve this improvement. The method is very efficient in eliminating background and can have very high resolution. Existing diffractometers can be easily modified to take advantage of this technique. RP BENO, MA (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 7 TC 7 Z9 7 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1992 VL 63 IS 9 BP 4134 EP 4137 DI 10.1063/1.1143224 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA JL575 UT WOS:A1992JL57500018 ER PT J AU HSU, WL TUNG, DM AF HSU, WL TUNG, DM TI APPLICATION OF MOLECULAR-BEAM MASS-SPECTROMETRY TO CHEMICAL VAPOR-DEPOSITION STUDIES SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID ASSISTED DIAMOND GROWTH; CH3; ENVIRONMENT; IONIZATION; DISCHARGE; RADICALS AB A molecular beam mass spectrometer system has been designed and constructed for the specific purpose of measuring the gaseous composition of the vapor environment during chemical vapor deposition of diamond. By the intrinsic nature of mass analysis, this type of design is adaptable to a broad range of other applications that rely either on thermal- or plasma-induced chemical kinetics. When gas is sampled at a relatively high process pressure (approximately 2700 Pa for our case), supersonic gas expansion at the sampling orifice can cause the detected signals to have a complicated dependence on the operating conditions. A comprehensive discussion is given on the effect of gas expansion on mass discrimination and signal scaling with sampling pressure and temperature, and how these obstacles can be overcome. This paper demonstrates that radical species can be detected with a sensitivity better than 10 ppm by the use of threshold ionization. A detailed procedure is described whereby one can achieve quantitative analysis of the detected species with an accuracy of +/- 20%. This paper ends with an example on the detection of H, H-2, CH3, CH4, and C2H2 during diamond growth. RP HSU, WL (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94550, USA. NR 29 TC 56 Z9 58 U1 2 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1992 VL 63 IS 9 BP 4138 EP 4148 DI 10.1063/1.1143225 PG 11 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA JL575 UT WOS:A1992JL57500019 ER PT J AU SHUGART, LR MCCARTHY, JF HALBROOK, RS AF SHUGART, LR MCCARTHY, JF HALBROOK, RS TI BIOLOGICAL MARKERS OF ENVIRONMENTAL AND ECOLOGICAL CONTAMINATION - AN OVERVIEW SO RISK ANALYSIS LA English DT Article DE BIOMARKER; ENVIRONMENTAL CONTAMINATION; ENVIRONMENTAL ASSESSMENT; ECOLOGICAL SIGNIFICANCE AB An approach, using biomarkers (biological responses) for assessing the biological and ecological significance of contaminants present in the environment is described. Living organisms integrate exposure to contaminants in their environment and respond in some measurable and predictable way. Responses are observed at several levels of biological organization from the biomolecular level, where pollutants can cause damage to critical cellular macromolecules and elicit defensive strategies such as detoxication and repair mechanisms, to the organismal level, where severe disturbances are manifested as impairment in growth, reproduction, developmental abnormalities, or decreased survival. Biomarkers can provide not only evidence of exposure to a broad spectrum of anthropogenic chemicals, but also a temporally integrated measure of bioavailable contaminant levels. A suite of biomarkers are evaluated over time to determine the magnitude of the problem and possible consequences. Relationships between biomarker response and adverse ecological effects are determined from estimates of animal health and population structure. RP SHUGART, LR (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831, USA. NR 19 TC 63 Z9 64 U1 2 U2 16 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 353 EP 359 DI 10.1111/j.1539-6924.1992.tb00687.x PG 7 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000006 PM 1410707 ER PT J AU LYNE, TB BICKHAM, JW LAMB, T GIBBONS, JW AF LYNE, TB BICKHAM, JW LAMB, T GIBBONS, JW TI THE APPLICATION OF BIOASSAYS IN RISK ASSESSMENT OF ENVIRONMENTAL-POLLUTION SO RISK ANALYSIS LA English DT Article DE CHEMICAL POLLUTION; LOW-LEVEL RADIOACTIVITY; BIOMONITORING; FLOW CYTOMETRY; WILDLIFE ID FLOW-CYTOMETRY; SCRIPTA; STRESS; DAMAGE; DNA AB Increased contamination of the environment by toxic chemicals has resulted in the need for sensitive assays to be used in risk assessment of polluted sites. Traditional tests are useful to detect and measure concentrations of chemicals in the environment and in tissues. However, physicochemical assays possess deficiencies that impair their use in evaluating complex environmental contamination. We have developed cytogenetic procedures, including chromosomal, micronucleus, and flow cytometric assays, to assess the mutagenic damage of petrochemicals and low-level radioactivity on indigenous terrestrial and aquatic wildlife populations. These procedures are sensitive to the perturbation of DNA that results from exposure to mutagenic contaminants in both field and laboratory studies. The use of natural populations of animals in biomonitoring, combined with traditional chemical assays, will ultimately provide sufficient information to estimate the risk to human health and environmental quality from anthropogenic pollution. C1 E CAROLINA UNIV,DEPT BIOL,GREENVILLE,NC 27858. TEXAS A&M UNIV SYST,DEPT WILDLIFE & FISHERIES SCI,COLL STN,TX 77843. SAVANNAH RIVER ECOL LAB,AIKEN,SC 29801. RP LYNE, TB (reprint author), TEXAS A&M UNIV SYST,DEPT SOIL & CROP SCI,SOIL PHYS SECT,COLL STN,TX 77843, USA. NR 39 TC 16 Z9 19 U1 0 U2 3 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 361 EP 365 DI 10.1111/j.1539-6924.1992.tb00688.x PG 5 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000007 PM 1410708 ER PT J AU DEPHILLIPS, MP AF DEPHILLIPS, MP TI ENVIRONMENTAL SUMMARY OF THE FEDERAL-REGISTER SO RISK ANALYSIS LA English DT Software Review RP DEPHILLIPS, MP (reprint author), BROOKHAVEN NATL LAB,BIOMED & ENVIRONM ASSESSMENT GRP,UPTON,NY 11973, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 455 EP 457 DI 10.1111/j.1539-6924.1992.tb00698.x PG 3 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000017 ER PT J AU HOLTZMAN, S AF HOLTZMAN, S TI A REVIEW OF CURRENT-CONTENTS ON DISKETTE (CCOD) WITH ABSTRACTS FOR APPLE-MACINTOSH, LIFE SCIENCES SO RISK ANALYSIS LA English DT Software Review RP HOLTZMAN, S (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,BLDG 475,UPTON,NY 11973, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 457 EP 458 DI 10.1111/j.1539-6924.1992.tb00699.x PG 2 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000018 ER PT J AU WHITE, RK AF WHITE, RK TI THE BEHAVIOR-BASED SAFETY PROCESS - MANAGING INVOLVEMENT FOR AN INJURY-FREE CULTURE - KRAUSE,TR, HIDLEY,JH, HODSON,SJ SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 0 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 459 EP 459 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000020 ER PT J AU WHITE, RK AF WHITE, RK TI SYSTEMS RELIABILITY ASSESSMENT - COLOMBO,AG, DEBUSTAMANTE,AS SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 0 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 459 EP 459 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000019 ER PT J AU WHITE, RK AF WHITE, RK TI RADON, RADIUM AND URANIUM IN DRINKING-WATER - COTHERN,CR, REBERS,PA SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 0 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 459 EP 460 PG 2 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000021 ER PT J AU WHITE, RK AF WHITE, RK TI PROBABILISTIC RELIABILITY - AN ENGINEERING APPROACH, 2ND EDITION - SHOOMAN,ML SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 3 U2 7 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 460 EP 460 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000024 ER PT J AU WHITE, RK AF WHITE, RK TI CHEMICAL PROCESS SAFETY - FUNDAMENTALS WITH APPLICATIONS - CROWL,DA, LOUVAR,JF SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 3 U2 7 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 460 EP 460 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000023 ER PT J AU WHITE, RK AF WHITE, RK TI LONG-RANGE TRANSPORT OF PESTICIDES - KURTZ,D SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 3 U2 7 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 460 EP 460 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000022 ER PT J AU WHITE, RK AF WHITE, RK TI SIGNIFICANCE AND TREATMENT OF VOLATILE ORGANIC-COMPOUNDS IN WATER-SUPPLIES - RAM,NM, CHRISTMAN,RF, CANTOR,KP SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 1 U2 5 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 461 EP 461 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000025 ER PT J AU WHITE, RK AF WHITE, RK TI THE WATER ENCYCLOPEDIA, 2ND EDITION - VANDERLEEDEN,F, TROISE,FL, TODD,DK SO RISK ANALYSIS LA English DT Book Review RP WHITE, RK (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 1 U2 5 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD SEP PY 1992 VL 12 IS 3 BP 461 EP 461 PG 1 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA JM260 UT WOS:A1992JM26000026 ER PT J AU LIU, CT KIM, YW AF LIU, CT KIM, YW TI ROOM-TEMPERATURE ENVIRONMENTAL EMBRITTLEMENT IN A TIAL ALLOY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID INTERGRANULAR HYDROGEN EMBRITTLEMENT; DUCTILITY; FEAL; INTERMETALLICS; FRACTURE; COMPOUND; CO3TI; IRON C1 UNIVERSAL ENERGY SYST INC,DIV MAT SCI,DAYTON,OH 45432. RP LIU, CT (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831, USA. OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 32 TC 82 Z9 92 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 1 PY 1992 VL 27 IS 5 BP 599 EP 603 DI 10.1016/0956-716X(92)90347-H PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA JH566 UT WOS:A1992JH56600016 ER PT J AU SCHULTZ, PA DAVENPORT, JW AF SCHULTZ, PA DAVENPORT, JW TI BONDING AND BRITTLENESS IN B2 STRUCTURE 3D TRANSITION-METAL ALUMINIDES - IONIC, DIRECTIONAL, OR DOES IT MAKE A DIFFERENCE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID ELECTRONIC-STRUCTURE; ORBITAL METHOD; SYSTEMS; FEAL C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP SCHULTZ, PA (reprint author), GE,CORP RES & DEV,SCHENECTADY,NY 12301, USA. NR 22 TC 32 Z9 32 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 1 PY 1992 VL 27 IS 5 BP 629 EP 634 DI 10.1016/0956-716X(92)90352-F PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA JH566 UT WOS:A1992JH56600021 ER PT J AU BEYER, WA SWARTZ, B AF BEYER, WA SWARTZ, B TI HALFWAY POINTS SO SIAM JOURNAL ON MATHEMATICAL ANALYSIS LA English DT Article DE MOMENT CENTER; CENTER OF VOLUME; MEDIAN AB As a half space moving perpendicularly to its border crosses a given density distribution, it may be stopped when it contains exactly half of the total mass of the distribution. Any point in common with the boundaries of all such stopped half spaces is called a "halfway point" for the distribution. One may regard it as a multidimensional extension of the "median" of one-dimensional distributions. A context in which such points arise is discussed, and some characteristics of distributions that have halfway points are considered. RP BEYER, WA (reprint author), LOS ALAMOS NATL LAB,DIV T,MS B284,LOS ALAMOS,NM 87545, USA. NR 8 TC 1 Z9 1 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 SN 0036-1410 J9 SIAM J MATH ANAL JI SIAM J. Math. Anal. PD SEP PY 1992 VL 23 IS 5 BP 1332 EP 1341 DI 10.1137/0523075 PG 10 WC Mathematics, Applied SC Mathematics GA JK491 UT WOS:A1992JK49100016 ER PT J AU TOKUNAGA, T AF TOKUNAGA, T TI THE PRESSURE RESPONSE OF THE SOIL-WATER SAMPLER AND POSSIBILITIES FOR SIMULTANEOUS SOIL SOLUTION SAMPLING AND TENSIOMETRY SO SOIL SCIENCE LA English DT Article ID BOUNDARY-CONDITIONS; EXTRACTION; COLUMNS; MODEL AB A soil water sample may be viewed as a tensiometer with a relatively slow response time. An expression for the pressure response of a fixed volume soil water sampler is derived. The criterion for determining when the gage pressure within the soil solution sampler may be used to infer the soil water matric potential in the vicinity of the sampler tip depends upon the cup-soil conductance (K*), the sampler's internal volume (V(SIGMA)), the initial absolute pressure (P(o)) associated with the vacuum set on the sampler, and the elapsed time since application of the vacuum (t). It was found that when the dimensionless time given by [P(o)K*t](V(SIGMA))-1 is greater than about 5, the sampler pressure may be used in determinations of matric and/or pressure potentials (PSI), or more generally the tensiometer pressure potential which also includes the influence of the soil air pressure potential. The essential difference in the response of tensiometers and soil water samplers arises from differences in the nature of the instrument sensitivities (S*). In the "tensiometer-limited" response, the standard tensiometer approaches an equilibrium reading via an exponential decay of the initial pressure disturbance characterized by a response time tau = (K*S*)-1, where K* and S* are, in principle, constant for a particular equilibration. A nonexponential decay response of the soil water sampler on the other hand arises from time-dependent S* and K*. Only the time-dependent S* effect is considered here. The S* in the case of soil water sampler is equal to P(V(gas))-1), where P and V(gas) are the instantaneous sampler gas pressure and gas phase volume, respectively. Under conditions where the ratio P(V(gas))-1 undergoes considerable change during the course of soil water collection, large deviations from the exponential decay response occur. Conversely, when only minor variations in P(V(air))-1 are experienced, the soil water sampler pressure response approaches that of the exponential decay. The time-weighting of the collected soil solution is discussed. One particular instrument design suited for simultaneous tensiometry and soil water sampling is described. Field data illustrating cases where soil and water sampler pressures may and may not be used to obtain PSI data are provided. The possible use of this type of device for both soil solution sampling and tensiometry in deep (>10 m) profiles is explained. RP TOKUNAGA, T (reprint author), LAWRENCE BERKELEY LAB,DIV EARTH SCI,1 CYCLOTRON RD,MAILSTOP 50E,BERKELEY,CA 94720, USA. RI Tokunaga, Tetsu/H-2790-2014 OI Tokunaga, Tetsu/0000-0003-0861-6128 NR 28 TC 12 Z9 12 U1 0 U2 4 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0038-075X J9 SOIL SCI JI Soil Sci. PD SEP PY 1992 VL 154 IS 3 BP 171 EP 183 DI 10.1097/00010694-199209000-00001 PG 13 WC Soil Science SC Agriculture GA JQ323 UT WOS:A1992JQ32300001 ER PT J AU ETCHEGOIN, P WEBER, J CARDONA, M HANSEN, WL ITOH, K HALLER, EE AF ETCHEGOIN, P WEBER, J CARDONA, M HANSEN, WL ITOH, K HALLER, EE TI ISOTOPE EFFECT IN GE - A PHOTOLUMINESCENCE STUDY SO SOLID STATE COMMUNICATIONS LA English DT Article ID CRYSTALS; SI AB Edge photoluminescence data (0.69-0.75 eV) at low temperatures (T=1.8 and 4.2 K) were obtained in three isotope enriched Ge crystals (MBAR=70.1, 73.9.5 and 75.62) and a natural one (MBAR=72.59). We observed the energy shifts of the bound exciton, phonon assisited electron-hole liquid and free exciton recombination luminescences as a function of the mean isotope mass. The results are in good agreement with both theoretical estimates using a rigid-ion pseudopotential and some existing experimental information. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,BERKELEY,CA 94720. RP ETCHEGOIN, P (reprint author), MAX PLANCK INST FESTKORPERFORSCH,HEISENBERGSTR 1,W-7000 STUTTGART 80,GERMANY. RI Itoh, Kohei/C-5738-2014 NR 25 TC 44 Z9 44 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD SEP PY 1992 VL 83 IS 11 BP 843 EP 848 DI 10.1016/0038-1098(92)90897-I PG 6 WC Physics, Condensed Matter SC Physics GA JP297 UT WOS:A1992JP29700002 ER PT J AU LYO, SK JONES, ED AF LYO, SK JONES, ED TI EFFECT OF INPLANE MAGNETIC-FIELDS ON THE ELECTRONIC-STRUCTURE AND PHOTOLUMINESCENCE SPECTRA IN DOPED SEMICONDUCTOR QUANTUM-WELLS SO SOLID STATE COMMUNICATIONS LA English DT Article ID LINE-SHAPE AB The effect of in-plane magnetic fields on the carrier energy dispersion, mass enhancement and the photoluminescence line-shape is investigated in semiconductor quantum wells. Exact results are obtained for parabolic quantum wells. An accurate numerical method applicable for arbitrary confinement potentials is introduced. This technique, based on a plane-wave basis set, is applied to the square-well potential. Minimum-photoluminescence-energy data are presented as a function of magnetic field. The theoretical results yield reasonable agreement with the data. RP LYO, SK (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 7 TC 4 Z9 4 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD SEP PY 1992 VL 83 IS 12 BP 975 EP 978 DI 10.1016/0038-1098(92)90524-D PG 4 WC Physics, Condensed Matter SC Physics GA JU157 UT WOS:A1992JU15700006 ER PT J AU DONGARRA, JJ VANDERVORST, HA AF DONGARRA, JJ VANDERVORST, HA TI PERFORMANCE OF VARIOUS COMPUTERS USING STANDARD TECHNIQUES FOR SOLVING SPARSE LINEAR-EQUATIONS SO SUPERCOMPUTER LA English DT Article AB The benchmark program presented here is a first attempt to construct a representative test problem for sparse matrices on a variety of machines. The heart of the code is a conjugate gradient (CG) iterative solver for large, sparse, symmetric and positive definite linear systems. The performance range and difficulties encountered on a specific architecture, made visible by this simplified model problem, are more or less representative for a class of iterative method (Lanczos, Bi-CG, CGS, etc.; see [1] for further details). C1 OAK RIDGE NATL LAB,MATH SCI SECT,OAK RIDGE,TN 37831. UNIV UTRECHT,INST MATH,3508 TA UTRECHT,NETHERLANDS. RP DONGARRA, JJ (reprint author), UNIV TENNESSEE,DEPT COMP SCI,104 AYRES HALL,KNOXVILLE,TN 37996, USA. RI Dongarra, Jack/E-3987-2014 NR 5 TC 5 Z9 5 U1 0 U2 1 PU ASFRA PI EDAM PA VOORHAVEN 33, 1135 BL EDAM, NETHERLANDS SN 0168-7875 J9 SUPERCOMPUTER JI Supercomputer PD SEP PY 1992 VL 9 IS 5 BP 17 EP 30 PG 14 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA KD878 UT WOS:A1992KD87800003 ER PT J AU GORETTA, KC CHEN, N LANAGAN, MT DORRIS, SE HU, JG WU, CT POEPPEL, RB AF GORETTA, KC CHEN, N LANAGAN, MT DORRIS, SE HU, JG WU, CT POEPPEL, RB TI PROCESSING TLBA2CA2CU3OX POWDERS SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID CA-CU-O; SHEATHED BA2YCU3O6+X TAPES; CRYSTAL-STRUCTURES; SUPERCONDUCTORS; PHASE; SYSTEM; WIRES; TC AB TlBa2Ca2Cu3Ox powders were synthesized from a mixture of oxides and carbonates. Tl2O3 was reacted with a complex oxide with an overall composition of Ba2Ca2Cu3Ox. All reactions were carried out in flowing O2, with the Ba2Ca2Cu3Ox formed at a reduced pressure of almost-equal-to 2.5 x 10(2) Pa. All processing outside the furnace was in a dry-N2 glovebox. Ag-clad wires fabricated from these powders exhibited onset of superconductivity at 118 K and critical current densities at 77 K of about 4 x 10(3) A cm-2. RP GORETTA, KC (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 25 TC 11 Z9 11 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 1992 VL 5 IS 9 BP 534 EP 537 DI 10.1088/0953-2048/5/9/002 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA JT482 UT WOS:A1992JT48200002 ER PT J AU RISCH, GA LANAGAN, MT POEPPEL, RB DEGUIRE, MR AF RISCH, GA LANAGAN, MT POEPPEL, RB DEGUIRE, MR TI INFRARED-LAMP ZONE-MELTING OF THE 31-ANGSTROM BSCCO PHASE SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID SUPERCONDUCTING FIBERS; GROWTH AB An infrared zone melter has been built to produce oriented thick films of the BSCCO 31 angstrom phase (T(c) = 80-90 K) on single-crystal MgO, using a feedstock composition of 2.4:1.5:1.0:1.8. Sample sizes were typically 6 x 25 mm and were superconducting after being traversed at or below 0.8 mum s-1 in air. Substrate interactions, producing noticeable (Mg, Cu)O dendrites, occurred when traverse speeds were below 0.6 mum s-1. At higher speeds, samples resembled partially melted BSCCO, and transition temperatures decreased with increasing traverse speeds. From this study, a traverse speed of 0.6 mum s-1 was found to produce the greatest critical current density at 4.2 K of 2.2 x 10(4) A cm-2. C1 CASE WESTERN RESERVE UNIV,CLEVELAND,OH 44106. RP RISCH, GA (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 1992 VL 5 IS 9 BP 542 EP 548 DI 10.1088/0953-2048/5/9/004 PG 7 WC Physics, Applied; Physics, Condensed Matter SC Physics GA JT482 UT WOS:A1992JT48200004 ER PT J AU VENEZIA, AM LOXTON, CM GARRETT, RF AF VENEZIA, AM LOXTON, CM GARRETT, RF TI RESONANCE PHOTOEMISSION AND NEAR EDGE X-RAY ABSORPTION FINE-STRUCTURE (NEXAFS) OF NI3AL(111) COVERED WITH CO SO SURFACE SCIENCE LA English DT Article ID METAL-SURFACES; ADSORPTION; NICKEL; ORIENTATION; NI(100); MOLECULES; SPECTRUM; CLUSTER; N-2 AB The adsorption of carbon monoxide (CO) on the (111) surface of the ordered alloy Ni3Al has been investigated by photoelectron spectroscopy using synchrotron radiation. The valence region spectrum was analyzed as the photon energy changed in the range between 60 and 75 eV. A resonance enhancement of a CO peak (1-pi) was observed for energy close to the Ni3p ionization threshold (67-68 eV). This result suggested that CO molecules adsorbed on the (111) crystal face of Ni3Al are preferentially bonded to Ni atoms. Near edge X-ray absorption fine structure (NEXAFS) spectra of the carbon K-edge region have been studied. The spectra were dominated by resonances arising from a sharp bound state transition to an unoccupied molecular orbital of pi-symmetry and by a broader sigma-shape resonance in the continuum. The dependence of these resonance structures on the polarization of the synchrotron light indicated the perpendicular orientation of CO on the surface of Ni3Al(111). C1 UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801. BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. RP VENEZIA, AM (reprint author), CNR,IST CHIM & TECNOL PRODOTTI NAT,DIPARTIMENTO CHIM INORGAN,VIA ARCHIRAFI 26-28,I-90123 PALERMO,ITALY. OI Venezia, Anna Maria/0000-0001-7197-875X NR 24 TC 3 Z9 3 U1 2 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 1 PY 1992 VL 275 IS 1-2 BP 75 EP 81 DI 10.1016/0039-6028(92)90650-U PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA JK390 UT WOS:A1992JK39000020 ER PT J AU HOFFMANN, FM LIN, KC TOBIN, RG HIRSCHMUGL, CJ WILLIAMS, GP DUMAS, P AF HOFFMANN, FM LIN, KC TOBIN, RG HIRSCHMUGL, CJ WILLIAMS, GP DUMAS, P TI SYNCHROTRON FIR STUDY OF THE INTERACTION OF POTASSIUM AND OXYGEN ON COPPER .1. ALKALI PROMOTED OXIDATION OF CU(100) SO SURFACE SCIENCE LA English DT Letter ID CUPROUS-OXIDE; METHANOL SYNTHESIS; CATALYSTS; RU(001); SPECTRA AB Utilizing synchrotron radiation in the far infrared, we have investigated the interaction of oxygen with a potassium multilayer adsorbed on a Cu(100) surface. Vibrational spectra indicate K-O bond formation of potassium superoxide. Annealing of the layer to 600 K results in the decomposition of the alkali compound. Simultaneously, the formation of cuprous oxide, Cu2O, is observed, which exhibits a characteristic phonon spectrum in the FIR. The results show that potassium promotes the oxidation of copper, increasing the rate by several (4-6) orders of magnitude. The results also demonstrate, for the first time, the application of high resolution infrared reflection-absorption spectroscopy on a single crystal surface to the observation of phonons in the far infrared. C1 MICHIGAN STATE UNIV,DEPT PHYS,E LANSING,MI 48824. BROOKHAVEN NATL LAB,UPTON,NY 11973. LASIR,CNRS,F-94320 THIAIS,FRANCE. LAB UTILISAT RAYONNEMENT ELECTROMAGNET,F-91405 ORSAY,FRANCE. RP HOFFMANN, FM (reprint author), EXXON RES & ENGN CO,ANNANDALE,NJ 08801, USA. NR 23 TC 20 Z9 20 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 1 PY 1992 VL 275 IS 1-2 BP L675 EP L681 DI 10.1016/0039-6028(92)90640-R PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA JK390 UT WOS:A1992JK39000010 ER PT J AU SAXENA, A BISHOP, AR WORL, LA SWANSON, BI AF SAXENA, A BISHOP, AR WORL, LA SWANSON, BI TI CHARGE SEPARATION IN MIXED-HALIDE MX-CRYSTALS - NOVEL DEVICE APPLICATIONS SO SYNTHETIC METALS LA English DT Article; Proceedings Paper CT SYMP ON POLYCONJUGATED MATERIALS : CHEMISTRY, PHYSICS AND TECHNOLOGY, AT THE 1991 FALL CONF OF THE EUROPEAN MATERIALS RESEARCH SOC CY NOV 04-07, 1991 CL STRASBOURG, FRANCE SP EUROPEAN MAT RES SOC, COUNCIL EUROPE, COMMISS EUROPEAN COMMUNITIES, BANQUE POPULAIRE, CTR RECH NUCL, CNRS, ELSEVIER SCI PUBL, PALAIS CONGRES STRASBOURG, SERV DOCUMENTAT TOURIST, EUROPEAN PARLIAMENT AB Photoexcited and doped single crystals of mixed-halide MX complexes are found to exhibit charge separation. Resonance Raman experiments on these crystals clearly indicate that electron polarons preferentially locate on the PtBr segment, while hole polarons are trapped within PtCl segments. Theoretical calculations based on a discrete, 3/4-filled, two-band, tight-binding Peierls-Hubbard model also demonstrate this polaronic selectivity. The possibility of fabricating photovoltaic devices that utilize charge separation in mixed-halide crystals is considered. C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,CTR MAT SCI,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,ISOTOPE & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. RP SAXENA, A (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0379-6779 J9 SYNTHETIC MET JI Synth. Met. PD SEP 1 PY 1992 VL 51 IS 1-3 BP 431 EP 436 DI 10.1016/0379-6779(92)90299-X PG 6 WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer Science SC Materials Science; Physics; Polymer Science GA JW419 UT WOS:A1992JW41900055 ER PT J AU MIYAHARA, K GARNER, FA HOSOI, Y AF MIYAHARA, K GARNER, FA HOSOI, Y TI MICROSTRUCTURE OF NEUTRON-IRRADIATED REDUCED ACTIVATION FE-12-PERCENT-CR- 15-SIMILAR-TO-30-PERCENT-MN TERNARY ALLOYS SO TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN LA Japanese DT Note DE REDUCED RADIOACTIVATION MATERIALS; FE-CR-MN TERNARY ALLOY; ALPHA-PHASE-PRECIPITATION; SIGMA-PHASE; VOID SWELLING; NEUTRON-IRRADIATION; 1ST WALL MATERIALS ID FE-CR-MN C1 PACIFIC NW LAB, DEPT MAT SCI, RICHLAND, WA 99352 USA. RP MIYAHARA, K (reprint author), NAGOYA UNIV, FAC ENGN, FURO CHO, CHIKUSA KU, NAGOYA 46401, JAPAN. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IRON STEEL INST JAPAN KEIDANREN KAIKAN PI TOKYO PA 9-4 OTEMACHI 1-CHOME CHIYODA-KU, TOKYO 100, JAPAN SN 0021-1575 J9 TETSU TO HAGANE JI Tetsu To Hagane-J. Iron Steel Inst. Jpn. PD SEP PY 1992 VL 78 IS 9 BP 1502 EP 1504 PG 3 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA JL712 UT WOS:A1992JL71200013 ER PT J AU TRAVIS, CC FOX, MT SIMMONS, WM LYON, BF AF TRAVIS, CC FOX, MT SIMMONS, WM LYON, BF TI COEXPOSURE TO GASOLINE VAPOR DECREASES BENZENE METABOLISM IN FISCHER-344 RATS SO TOXICOLOGY LETTERS LA English DT Article DE PHYSIOLOGICALLY-BASED PHARMACOKINETICS MODELING; BENZENE; GASOLINE VAPOR; COEXPOSURE; GAS UPTAKE ID RISK ASSESSMENT; TOLUENE; PHARMACOKINETICS; DISPOSITION; SUPPRESSION; INHALATION; STYRENE; INVIVO; MICE AB The metabolic interactions of benzene and gasoline vapor were investigated in male Fischer-344 rats. A closed chamber gas-uptake exposure system was used to obtain inhalation uptake curves for benzene alone and benzene in the presence of gasoline vapor. Exposure to benzene as a component of gasoline vapor resulted in a decrease of benzene metabolism. A physiologically based pharmacokinetic model of benzene metabolism was used to quantitatively determine the extent of the inhibitory effect of gasoline vapor on benzene metabolism. This observed inhibitory effect cannot be accounted for by the presence of toluene in gasoline vapor. C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,RISK ANAL SECT,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV ENVIRONM & HLTH PROTECT,OAK RIDGE,TN 37831. NR 19 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD SEP PY 1992 VL 62 IS 2-3 BP 231 EP 240 DI 10.1016/0378-4274(92)90026-G PG 10 WC Toxicology SC Toxicology GA JQ695 UT WOS:A1992JQ69500012 PM 1412508 ER PT J AU KWONG, MK LI, Y AF KWONG, MK LI, Y TI UNIQUENESS OF RADIAL SOLUTIONS OF SEMILINEAR ELLIPTIC-EQUATIONS SO TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY LA English DT Article DE SEMILINEAR ELLIPTIC EQUATION; BOUNDARY VALUE PROBLEM; UNIQUENESS; RADIAL SOLUTION; POSITIVE SOLUTION; ENERGY FUNCTION ID POSITIVE SOLUTIONS; RN; DELTA-U+F(U)=0; EXPONENTS; EXISTENCE; SYMMETRY AB E. Yanagida recently proved that the classical Matukuma equation with a given exponent has only one finite mass solution. We show how similar ideas can be exploited to obtain uniqueness results for other classes of equations as well as Matukuma equations with more general coefficients. One particular example covered is DELTA-u + u(p) +/- u = 0, with p > 1 . The key ingredients of the method are energy functions and suitable transformations. We also study general boundary conditions, using an extension of a recent result by Bandle and Kwong. Yanagida's proof does not extend to solutions of Matukuma's equation satisfying other boundary conditions. We treat these with a completely different method of Kwong and Zhang. C1 UNIV ROCHESTER,DEPT MATH,ROCHESTER,NY 14620. RP KWONG, MK (reprint author), ARGONNE NATL LAB,DIV MATH & COMP SCI,ARGONNE,IL 60439, USA. RI Li, Yi/A-1907-2009; Li, Yi/D-5381-2017 OI Li, Yi/0000-0002-7148-0019; Li, Yi/0000-0002-7148-0019 NR 26 TC 77 Z9 78 U1 0 U2 1 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 SN 0002-9947 J9 T AM MATH SOC JI Trans. Am. Math. Soc. PD SEP PY 1992 VL 333 IS 1 BP 339 EP 363 DI 10.2307/2154113 PG 25 WC Mathematics SC Mathematics GA JL949 UT WOS:A1992JL94900017 ER PT J AU DEININGER, PL BATZER, MA HUTCHISON, CA EDGELL, MH AF DEININGER, PL BATZER, MA HUTCHISON, CA EDGELL, MH TI MASTER GENES IN MAMMALIAN REPETITIVE DNA AMPLIFICATION SO TRENDS IN GENETICS LA English DT Review ID HUMAN TRANSPOSABLE ELEMENT; ALU FAMILY MEMBERS; SUBFAMILY RELATIONSHIPS; REPEATED SEQUENCES; HUMAN GENOME; L1 FAMILY; EVOLUTION AB The analysis of species-specific subfamilies of both the LINE and SINE mammalian repetitive DNA families suggests that such subfamilies have arisen by amplification of an extremely small group of 'master' genes. In contrast to the master genes, the vast majority of both SINEs and LINEs appear to behave like pseudogenes in their inability to undergo extensive amplification. C1 ALTON OCHSNER MED FDN & OCHSNER CLIN,MOLEC GENET LAB,NEW ORLEANS,LA 70121. UNIV N CAROLINA,DEPT MICROBIOL,CHAPEL HILL,NC 27599. LAWRENCE LIVERMORE NATL LAB,CTR HUMAN GENOME,DIV BIOMED SCI,LIVERMORE,CA 94550. RP DEININGER, PL (reprint author), LOUISIANA STATE UNIV,MED CTR,MED CTR,DEPT BIOCHEM & MOLEC BIOL,NEW ORLEANS,LA 70112, USA. OI Deininger, Prescott/0000-0002-1067-3028 FU NHGRI NIH HHS [R01 HG00340]; NIAID NIH HHS [AI08998]; NIGMS NIH HHS [GM21313] NR 39 TC 264 Z9 265 U1 2 U2 4 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0168-9525 J9 TRENDS GENET JI Trends Genet. PD SEP PY 1992 VL 8 IS 9 BP 307 EP 311 DI 10.1016/0168-9525(92)90139-U PG 5 WC Genetics & Heredity SC Genetics & Heredity GA JK248 UT WOS:A1992JK24800005 PM 1365396 ER PT J AU DYKHUIZEN, RC AF DYKHUIZEN, RC TI DIFFUSIVE MATRIX FRACTURE COUPLING INCLUDING THE EFFECTS OF FLOW CHANNELING SO WATER RESOURCES RESEARCH LA English DT Article ID SOLUTE TRANSPORT; ROCK; MODELS AB It is important to predict the transport of solute in fractured systems. In these systems the majority of solute advection occurs within the fractures. However, the diffusive coupling with the large storage contained within the rock matrix often significantly slows down the effective solute velocity below that of the physical fluid velocity within the fractures. The coupling between these two porosity systems is further complicated by the fact that the fluid within the fractures flows in distinct channels which occupy a small percent of the fracture plane. This paper extends the work of Rasmuson and Neretnieks (1986) and Johns and Roberts (1991) in analyzing the consequences of the channeling on the solute coupling between these two porosity systems. It has been found by Rasmuson and Neretnieks that the amount of coupling can be significantly reduced due to the fracture channeling if the time scales of interest are short when compared to diffusive time scales in the rock matrix system. This study shows that for longer time scales this reduction in the coupling is greatly reduced. Experimental measurements are still required to enable verification of the assumptions made in this and other analytical studies of fracture matrix coupling. RP DYKHUIZEN, RC (reprint author), SANDIA NATL LABS,DEPT FLUID & THERMAL SCI,ALBUQUERQUE,NM 87185, USA. NR 11 TC 18 Z9 19 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1992 VL 28 IS 9 BP 2447 EP 2450 DI 10.1029/92WR01136 PG 4 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA JL482 UT WOS:A1992JL48200023 ER PT J AU MUNDRA, K DEBROY, T ZACHARIA, T DAVID, SA AF MUNDRA, K DEBROY, T ZACHARIA, T DAVID, SA TI ROLE OF THERMOPHYSICAL PROPERTIES IN WELD POOL MODELING SO WELDING JOURNAL LA English DT Article DE WELD POOL MODELING; THERMOPHYSICAL PROP; NUMERICAL SIMULATION; HEAT TRANSFER; FLUID FLOW; VISCOSITY; THERMAL DIFFUSIVITY; SURFACE TENSION; POWER ABSORPTION; WELD POOL SIMULATION ID TYPE-304 STAINLESS-STEEL; FREE-SURFACE; HEAT-TRANSFER; FLUID-FLOW; LASER; CONVECTION; BEAM; SPECTROSCOPY; PLASMA; GTA AB The results of numerical simulation of heat transfer and fluid flow in the weld pool strongly depend on the physical processes considered and the input data used in the model. The aim of this paper is to examine the impact of the thermophysical properties on the results of such calculations. The effects of various thermophysical properties such as the viscosity, thermal diffusivities of both the solid and liquid, the temperature coefficient of surface tension and the energy absorption coefficient on the depth and the diameter of the weld pool, and the weld pool surface velocities and temperature distributions are analyzed. The relative importance of the various thermophysical properties are identified from the computed results. C1 OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN 37831 USA. RP MUNDRA, K (reprint author), PENN STATE UNIV, DEPT MAT SCI & ENGN, University Pk, PA 16802 USA. RI DebRoy, Tarasankar/A-2106-2010 NR 25 TC 35 Z9 35 U1 2 U2 7 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 SN 0043-2296 J9 WELD J JI Weld. J. PD SEP PY 1992 VL 71 IS 9 BP S313 EP S320 PG 8 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA JL481 UT WOS:A1992JL48100013 ER PT J AU MOORHEAD, KK COOK, AE AF MOORHEAD, KK COOK, AE TI A COMPARISON OF HYDRIC SOILS, WETLANDS, AND LAND-USE IN COASTAL NORTH-CAROLINA SO WETLANDS LA English DT Article DE GIS; HYDRIC SOILS; LAND USE; NATIONAL WETLANDS INVENTORY; SOIL SURVEY; WETLAND LOSSES AB The objective of this study was to compare hydric soils, wetlands, and land-use patterns for two counties in coastal North Carolina with a Geographic Information System. Soils were digitized from Soil Conservation Service county soil surveys, wetlands from National Wetland Inventory (NWI) maps, and land-use patterns from an environmental atlas of the coastal zone of North Carolina. The soils were consolidated into hydric mineral, hydric organic, and nonhydric soils for analysis. The areas of hydric soils were compared with wetlands or with land use to provide information on the relative distribution of wetland communities by soil type and conversions of wetlands into non-wetland areas by land use. Approximately 50 percent (87,650 ha) of the pre-settlement wetlands have been drained and converted to other uses. The conversions were more pronounced on hydric mineral soils. Conversions of wetlands for agricultural purposes accounted for 63 percent of wetland losses while conversions to pine plantations accounted for an additional 17 percent. Fifteen percent of the existing wetlands were in a state of transition to other land uses. This landscape-level approach complements detailed field studies that examine soil and plant relationships at individual field sites. RP MOORHEAD, KK (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29802, USA. NR 0 TC 7 Z9 7 U1 1 U2 8 PU SOC WETLAND SCIENTISTS PI LAWRENCE PA 810 E TENTH ST, P O BOX 1897, LAWRENCE, KS 66044 SN 0277-5212 J9 WETLANDS JI Wetlands PD SEP PY 1992 VL 12 IS 2 BP 99 EP 105 PG 7 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA JN108 UT WOS:A1992JN10800005 ER PT J AU BOCK, R DOSS, KGR GUTBROD, HH KAMPERT, KH KOLB, B LUND, I SCHMIDT, HR SIEMIARCZUK, T WISLICKI, W AF BOCK, R DOSS, KGR GUTBROD, HH KAMPERT, KH KOLB, B LUND, I SCHMIDT, HR SIEMIARCZUK, T WISLICKI, W TI PION-SOURCE GEOMETRY DEDUCED FROM SOFT-PION INTERFEROMETRY IN HEAVY-ION COLLISIONS AT 650-A MEV SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID BOSE-EINSTEIN CORRELATIONS AB We report transverse, R(T), and longitudinal, R(L), source sizes extracted from two-pion interferometry analysis in the Au + Au and Nb + Nb interactions at 650 A MeV For the Nb + Nb interactions, both, R(T) and R(L), do not exceed the niobium nucleus radius. In the case of Au + Au collisions, the transverse size is larger than the longitudinal one being about 12 fm for the selection of p(pi)+ < 120 MeV/c. We also corroborate the existence of the previously reported specific three-pion correlations. C1 INST NUCL STUDIES,WARSAW,POLAND. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV MUNSTER,INST KERNPHYS,W-4400 MUNSTER,GERMANY. RP BOCK, R (reprint author), GESELL SCHWERIONENFORSCH GMBH,POSTFACH 110552,W-6100 DARMSTADT,GERMANY. OI Kampert, Karl-Heinz/0000-0002-2805-0195 NR 11 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PD SEP PY 1992 VL 343 IS 3 BP 293 EP 299 DI 10.1007/BF01291528 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA JQ340 UT WOS:A1992JQ34000007 ER PT J AU ALBRECHT, R AWES, TC BAKTASH, C BECKMANN, P BERGER, F BLOOMER, MA BOCK, D BOCK, R CLAESSON, G CLEWING, G DRAGON, L EKLUND, A FERGUSON, R FRANZ, A GARPMAN, SIA GLASOW, R GUSTAFSSON, HA GUTBROD, HH HOLKER, G IDH, J JACOBS, P KAMPERT, KH KOLB, BW LOHNER, H LUND, I OBENSHAIN, FE OSKARSSON, A OTTERLUND, I PEITZMANN, T PLASIL, F POSKANZER, AM PURSCHKE, ML RITTER, HG ROTERS, B SAINI, S SANTO, R SCHMIDT, HR SORENSEN, SP STEINHAEUSER, P STEFFENS, K STENLUND, E STUKEN, D YOUNG, GR AF ALBRECHT, R AWES, TC BAKTASH, C BECKMANN, P BERGER, F BLOOMER, MA BOCK, D BOCK, R CLAESSON, G CLEWING, G DRAGON, L EKLUND, A FERGUSON, R FRANZ, A GARPMAN, SIA GLASOW, R GUSTAFSSON, HA GUTBROD, HH HOLKER, G IDH, J JACOBS, P KAMPERT, KH KOLB, BW LOHNER, H LUND, I OBENSHAIN, FE OSKARSSON, A OTTERLUND, I PEITZMANN, T PLASIL, F POSKANZER, AM PURSCHKE, ML RITTER, HG ROTERS, B SAINI, S SANTO, R SCHMIDT, HR SORENSEN, SP STEINHAEUSER, P STEFFENS, K STENLUND, E STUKEN, D YOUNG, GR TI MULTIPLICITY AND PSEUDORAPIDITY DISTRIBUTIONS OF CHARGED-PARTICLES FROM S-32 INDUCED HEAVY-ION INTERACTIONS AT 200-A GEV SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID TRANSVERSE ENERGY; NUCLEUS COLLISIONS; EXPERIMENT WA80; EMULSION; O-16; FLUCTUATIONS; GEV/NUCLEON; CALORIMETER; CERN AB Multiplicity and pseudorapidity distributions have been measured for S-32 + Al, Cu, Ag and Au at 200 A GeV. The widths of the pseudorapidity distributions increase from central to peripheral collisions. The main contribution is assumed to come from the increasing fraction of charged particles stemming from the fragmentation of the target for peripheral collisions as compared to central collisions. On the average 170-180 charged particles per unit of pseudorapidity are attained for the most central S-32 + Au events at the maximum of the distribution. The target dependence of the yield of charged particles for central collisions is investigated. In the target rapidity region the yield is directly proportional to the target mass. The transverse energy per charged particle has been studied as a function of centrality and pseudorapidity. The experimental results are compared to the results from the Monte-Carlo model VENUS 3.11 which includes rescattering among secondaries. A comparison between different centrality triggers is made. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. UNIV MUNSTER,INST KERNPHYS,W-4400 MUNSTER,GERMANY. LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. UNIV LUND,DEPT PHYS,DIV COSM & SUBATOM PHYS,S-22362 LUND,SWEDEN. UNIV TENNESSEE,KNOXVILLE,TN 37996. UNIV GRONINGEN,KERNFYS VERSNELCER INST,9747 AA GRONINGEN,NETHERLANDS. RP ALBRECHT, R (reprint author), GESELL SCHWERIONENFORSCH GMBH,PLANCKSTR 1,POSTFACH 110552,W-6100 DARMSTADT,GERMANY. RI Peitzmann, Thomas/K-2206-2012; Lohner, Herbert/B-2397-2014; OI Peitzmann, Thomas/0000-0002-7116-899X; Lohner, Herbert/0000-0002-7441-739X; Kampert, Karl-Heinz/0000-0002-2805-0195 NR 27 TC 34 Z9 34 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PD SEP PY 1992 VL 55 IS 4 BP 539 EP 548 DI 10.1007/BF01561291 PG 10 WC Physics, Particles & Fields SC Physics GA JP516 UT WOS:A1992JP51600002 ER PT J AU ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M CAMACHO, AJ ROZAS CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C DELIKARIS, D DELLARICCIA, BA DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEARNLEY, TA FEINDT, M FENYUK, A ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, LJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E GROSADIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B GUMENYUK, S GUY, J HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, JJ KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J KRONKVIST, I KRSTIC, J KRUENERMARQUIS, U KRUPINSKI, W KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LEVY, JM LIEB, E LIKO, D LILLETHUN, E LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PASSERI, A PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PETROLINI, A PETTERSEN, TE PIERRE, F PIMENTA, M PINGO, O POL, ME POLOK, G POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTI, F SISAKIAN, AN SKAALI, TB SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS VILANOVA, D VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J AF ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M CAMACHO, AJ ROZAS CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C DELIKARIS, D DELLARICCIA, BA DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEARNLEY, TA FEINDT, M FENYUK, A ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, LJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E GROSADIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B GUMENYUK, S GUY, J HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, JJ KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J KRONKVIST, I KRSTIC, J KRUENERMARQUIS, U KRUPINSKI, W KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LEVY, JM LIEB, E LIKO, D LILLETHUN, E LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PASSERI, A PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PETROLINI, A PETTERSEN, TE PIERRE, F PIMENTA, M PINGO, O POL, ME POLOK, G POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTI, F SISAKIAN, AN SKAALI, TB SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS VILANOVA, D VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J TI A STUDY OF THE DECAYS OF TAU LEPTONS PRODUCED ON THE Z-RESONANCE AT LEP SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID MONTE-CARLO SIMULATION; RADIATIVE-CORRECTIONS; PHOTON CORRECTIONS; BHABHA SCATTERING; JET FRAGMENTATION; E+E ANNIHILATION; PERTURBATIVE QCD; HIGH-ENERGIES; POLARIZATION; PHYSICS AB From the analysis of a data sample corresponding to an integrated luminosity of 4.63 pb-1 taken during the 1990 run of LEP at centre of mass energies between 88.2 GeV an 94.2 GeV, the tau decays tau- --> e-nu(e)nu(tau)BAR, tau- --> mu-nu(mu)nu(tau)BAR, tau- --> pi-(K-)nu(tau), tau- --> rho-nu(tau) and their charge conjugates have been studied. The following branching ratios have been measured; BR (tau- --> e-nu(e)nu(tau)BAR) = 18.6+/-0.8 (stat.)+/-0.6 (sys.)%, BR (tau- --> mu-nu(mu)nu(tau)BAR) = 17.4+/-0.7+/-0.6%, BR (tau- --> pi-(K-)nu(tau)) = 11.9+/-0.7+/-0.7%, BR (tau- --> rho-nu(tau)) = 22.4+/-0.8+/-1.3%, in good agreement with world averages. The measured electronic and muonic branching ratios lead to a measurement of the strong coupling constant, alpha(s)(m(tau)) = 0.26 +0.09/-0.12. Extrapolating the alpha(s) value from m(tau) to m(Z) yields alpha(s)(m(Z)) = 0.109 +0.012/-0.028. The average polarization P(tau) of taus produced in Z --> tau+tau- decays has also been measured using the above decay modes. The weighted mean of the polarizations obtained from the four decay modes is P(tau) = -0.24+/-0.07. This value of P(tau) gives, in the improved Born approximation, a ratio between the axial and vector coupling constants of the tau of v(tau)/a(tau) = 0.12+/-0.04, and hence a value of the effective electroweak mixing parameter sin2-theta(w)(m(Z)2) = 0.220+/-0.009. C1 UNIV TECN LISBOA, INST SUPER TECN, P-1000 LISBON, PORTUGAL. IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS, AMES, IA 50011 USA. UNIV INSTELLING ANTWERP, DEPT PHYS, B-2610 WILRIJK, BELGIUM. UNIV LIBRE BRUXELLES VRIJE UNIV BRUSSEL, IIHE, B-1050 BRUSSELS, BELGIUM. UNIV ETAT MONS, FAC SCI, SERV PHYS PARTICULES ELEMENT, B-7000 MONS, BELGIUM. UNIV ATHENS, PHYS LAB, GR-10680 ATHENS, GREECE. UNIV BERGEN, DEPT PHYS, N-5007 BERGEN, NORWAY. UNIV BOLOGNA, DIPARTIMENTO FIS, I-40126 BOLOGNA, ITALY. IST NAZL FIS NUCL, BOLOGNA, ITALY. COLL FRANCE, PHYS CORPUSCULAIRE LAB, F-75231 PARIS 05, FRANCE. CERN, CH-1211 GENEVA 23, SWITZERLAND. UNIV LOUIS PASTEUR, INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, CTR RECH NUCL, F-62037 STRASBOURG, FRANCE. NCSR DEMOCRITOS, INST NUCL PHYS, GR-15310 ATHENS, GREECE. UNIV GENOA, DIPARTIMENTO FIS, I-16146 GENOA, ITALY. IST NAZL FIS NUCL, I-16146 GENOA, ITALY. UNIV GRENOBLE 1, INST SCI NUCL, F-38026 GRENOBLE, FRANCE. SEFT, HIGH ENERGY PHYS RES INST, SF-00170 HELSINKI, FINLAND. JOINT INST NUCL RES, MOSCOW 101000, USSR. UNIV KARLSRUHE, INST EXPTL KERNPHYS, W-7500 KARLSRUHE, GERMANY. INST NUCL PHYS, HIGHER ENERGY PHYS LAB, PL-30055 KRAKOW 30, POLAND. CTR BRASILEIRO PESQUISAS, BR-22290 RIO DE JANEIRO, BRAZIL. UNIV PARIS 11, ACCELERATEUR LINEAIRE LAB, F-91405 ORSAY, FRANCE. UNIV LANCASTER, SCH PHYS & MAT, LANCASTER LA1 4YB, ENGLAND. UNIV LIVERPOOL, DEPT PHYS, LIVERPOOL L69 3BX, ENGLAND. UNIV PARIS 06, LPNHE, F-75230 PARIS 05, FRANCE. UNIV PARIS 07, F-75221 PARIS 05, FRANCE. UNIV LUND, DEPT PHYS, S-22363 LUND, SWEDEN. UNIV LYON 1, F-69622 VILLEURBANNE, FRANCE. 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PROTVINO HIGH ENERGY PHYS INST, PROTVINO, USSR. INST JOZEF STEFAN, LJUBLJANA, YUGOSLAVIA. UNIV STOCKHOLM, INST PHYS, S-11346 STOCKHOLM, SWEDEN. UNIV TURIN, DIPARTIMENTO FIS SPERMENTALE, I-10125 TURIN, ITALY. IST NAZL FIS NUCL, TURIN, ITALY. IST NAZL FIS NUCL, TRIESTE, ITALY. UNIV TRIESTE, I-34127 TRIESTE, ITALY. UNIV UDINE, IST FIS, I-33100 UDINE, ITALY. UNIV UPPSALA, DEPT RADIAT SCI, S-75121 UPPSALA, SWEDEN. UNIV VALENCIA, CTR MIXTO UNIV VALENCIA CSIC, INST FIS CORPUSCULAR, E-46100 BURJASSOT, SPAIN. UNIV VALENCIA, DEPT FIS ATOM MOLEC & NUCL, E-46100 BURJASSOT, SPAIN. AUSTRIAN ACAD SCI, INST HOCHENERGIEPHYS, A-1050 VIENNA, AUSTRIA. UNIV WARSAW, INST NUCL STUDIES, PL-00681 WARSAW, POLAND. UNIV GESAMTHSCH WUPPERTAL, FACHBEREICH PHYS, W-5600 WUPPERTAL 1, GERMANY. RP ABREU, P (reprint author), LAB INSTRUMENTACAO & FIS EXPTL PARTICULAS, AV E GARCIA 14, LISBON, PORTUGAL. 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Phys. C-Part. Fields PD SEP PY 1992 VL 55 IS 4 BP 555 EP 567 PG 13 WC Physics, Particles & Fields SC Physics GA JP516 UT WOS:A1992JP51600004 ER PT J AU RESCIGNO, TN LENGSFIELD, BH AF RESCIGNO, TN LENGSFIELD, BH TI A FIXED-NUCLEI, ABINITIO TREATMENT OF LOW-ENERGY ELECTRON-H2O SCATTERING SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID KOHN VARIATIONAL METHOD; MOLECULE COLLISIONS; POLYATOMIC-MOLECULES; METHANE SCATTERING; POLAR-MOLECULES; EXCITATION; IMPACT; H2O AB We report the results of a theoretical study of low-energy electron-H2O scattering. The calculations employ the complex Kohn variational technique and are undertaken at both the static-exchange and polarized-SCF levels. Target polarization effects are included by using an ab initio optical potential. Particular attention is paid to the complications attending electron scattering from target molecules that possess a permanent dipole moment. We describe the steps necessary to extract meaningful differential cross sections from fixed-nuclei calculations that ignore the rotational motion of the target. Comparison is made with experiment as well as other recent theoretical treatments. RP RESCIGNO, TN (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550, USA. NR 44 TC 41 Z9 41 U1 1 U2 3 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0178-7683 J9 Z PHYS D ATOM MOL CL JI Z. Phys. D-Atoms Mol. Clusters PD SEP PY 1992 VL 24 IS 2 BP 117 EP 124 PG 8 WC Physics, Atomic, Molecular & Chemical SC Physics GA JQ040 UT WOS:A1992JQ04000005 ER PT J AU HOHIMER, JP VAWTER, GA CRAFT, DC HADLEY, GR AF HOHIMER, JP VAWTER, GA CRAFT, DC HADLEY, GR TI IMPROVING THE PERFORMANCE OF SEMICONDUCTOR RING LASERS BY CONTROLLED REFLECTION FEEDBACK SO APPLIED PHYSICS LETTERS LA English DT Article ID ORBITER LASERS; CW OPERATION AB We report a tenfold increase in the lasing output of single-output Y-junction semiconductor ring lasers by reducing the end-facet reflection feedback. Controlled reflection feedback is also shown to be a means for promoting unidirectional lasing in dual-output ring lasers. Finally, we show that the counterpropagating ring modes are strongly coupled by gain competition. RP HOHIMER, JP (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 10 TC 27 Z9 27 U1 1 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 31 PY 1992 VL 61 IS 9 BP 1013 EP 1015 DI 10.1063/1.107700 PG 3 WC Physics, Applied SC Physics GA JK802 UT WOS:A1992JK80200001 ER PT J AU PIESTRUP, MA BOYERS, DG PINCUS, CI LI, Q HO, AH MARUYAMA, XK SNYDER, DD SKOPIK, DM SILZER, RM MORAN, MJ ROTHBART, GB AF PIESTRUP, MA BOYERS, DG PINCUS, CI LI, Q HO, AH MARUYAMA, XK SNYDER, DD SKOPIK, DM SILZER, RM MORAN, MJ ROTHBART, GB TI OBSERVATION OF THE FOCUSING OF X-RAY TRANSITION RADIATION USING CYLINDRICAL OPTICS SO APPLIED PHYSICS LETTERS LA English DT Article ID MEDIUM-ENERGY ELECTRONS AB We have measured the profile of x rays generated by a transition radiator and focused by simple cylindrical optics. Soft x rays with photon energies between 1 and 4 keV were generated by a 93-MeV electron beam striking a stack of eight foils of 3.5-mu-m-thick mylar. These x rays were emitted in an annular cone and were collected by a quartz cylinder which focused the x rays to a 0.5-mm-diam spot at a distance of 1.35 m from the transition radiator. C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. UNIV SASKATCHEWAN,SASKATCHEWAN ACCELERATOR LAB,SASKATOON S7N 0W0,SASKATCHEWAN,CANADA. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. SOFTWARE SCI INC,BURLINGAME,CA 94005. RP PIESTRUP, MA (reprint author), ADELPHI TECHNOL INC,2181 PK BLVD,PALO ALTO,CA 94306, USA. NR 10 TC 4 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 31 PY 1992 VL 61 IS 9 BP 1019 EP 1021 DI 10.1063/1.107702 PG 3 WC Physics, Applied SC Physics GA JK802 UT WOS:A1992JK80200003 ER PT J AU LUINE, J BULMAN, J BURCH, J DALY, K LEE, A PETTIETTEHALL, C SCHWARZBEK, S MILLER, D AF LUINE, J BULMAN, J BURCH, J DALY, K LEE, A PETTIETTEHALL, C SCHWARZBEK, S MILLER, D TI CHARACTERISTICS OF HIGH-PERFORMANCE YBA2CU3O7 STEP-EDGE JUNCTIONS SO APPLIED PHYSICS LETTERS LA English DT Article ID GRAIN-BOUNDARY JUNCTIONS; WEAK LINKS; DC SQUIDS; JOSEPHSON; FILMS AB Step-edge Josephson junctions are engineered grain boundary junctions fabricated using standard lithographic and film deposition techniques. We report a systematic study of 180 YBa2Cu3O7 step-edge junctions and identify a fabrication technique which results in a 90% yield of working junctions with critical current spreads from 30% to 50% (1-sigma/I(c-ave)) over the entire substrate. Technically useful critical current values at 65 K can be obtained by adjusting YBa2Cu3O7 film thickness. I(c)R(n) values, approximately independent of film thickness, are approximately 1 mV at 4.2 K and approximately 0.1 mV at 65 K. Most junctions exhibit ideal electrical behavior in accordance with the RSJ model. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP LUINE, J (reprint author), TRW CO INC,SPACE & TECHNOL GRP,1 SPACE PK,REDONDO BEACH,CA 90278, USA. NR 23 TC 49 Z9 49 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 31 PY 1992 VL 61 IS 9 BP 1128 EP 1130 DI 10.1063/1.107690 PG 3 WC Physics, Applied SC Physics GA JK802 UT WOS:A1992JK80200040 ER PT J AU MARTIN, JE WILCOXON, JP ODINEK, J AF MARTIN, JE WILCOXON, JP ODINEK, J TI INTERNAL STRUCTURE AND DYNAMICS OF DILUTE LINEAR-POLYMERS SO MACROMOLECULES LA English DT Article ID LIGHT-SCATTERING; INFINITE DILUTION; DIFFUSION; FRACTALS AB We report measurements of the internal structure and dynamics of a dilute high molecular weight polymer in good and 0 solvents, with a special emphasis on the form of the decay of internal modes. Intermediate elastic light scattering measurements show that the static structure exhibits the expected self-avoiding walk and random-walk fractal dimensions in good and theta-solvents, respectively. Quasielastic light scattering studies of the relaxation of internal "Zimm" modes demonstrate the universal q3 dependence of the initial decay rate on the scattering wavevector. However, the primary goal of this work, to observe the expected stretched exponential time decay exp[-(t/tau)b] with the Zimm exponent b = 2/3, was difficult to achieve, even though we used the lambda = 331.6 nm UV line of an argon ion laser to monitor relaxations on length scales much smaller than the polymer radius. In a good solvent we obtained b congruent-to 0.72, and in a theta-solvent we obtained b congruent-to 0.71. We compare these results to extant experimental and theoretical work. RP MARTIN, JE (reprint author), SANDIA NATL LABS,DIV STRUCT PHYS & SHOCK CHEM,ALBUQUERQUE,NM 87185, USA. NR 24 TC 2 Z9 2 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 31 PY 1992 VL 25 IS 18 BP 4635 EP 4641 DI 10.1021/ma00044a026 PG 7 WC Polymer Science SC Polymer Science GA JL964 UT WOS:A1992JL96400026 ER PT J AU WATKINS, JD AF WATKINS, JD TI DOES WATKINS - BUSH NES WILL BENEFIT INDUSTRY, CONSUMERS SO OIL & GAS JOURNAL LA English DT Editorial Material RP WATKINS, JD (reprint author), US DOE,WASHINGTON,DC, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PENNWELL PUBL CO ENERGY GROUP PI TULSA PA 1421 S SHERIDAN RD PO BOX 1260, TULSA, OK 74101 SN 0030-1388 J9 OIL GAS J JI Oil Gas J. PD AUG 31 PY 1992 VL 90 IS 35 BP 29 EP 29 PG 1 WC Energy & Fuels; Engineering, Petroleum SC Energy & Fuels; Engineering GA JL479 UT WOS:A1992JL47900008 ER PT J AU GLEISER, M KOLB, EW AF GLEISER, M KOLB, EW TI FLUCTUATION-DRIVEN ELECTROWEAK PHASE-TRANSITION SO PHYSICAL REVIEW LETTERS LA English DT Article ID BARYON-NUMBER VIOLATION; EARLY UNIVERSE; SYMMETRY BEHAVIOR; HIGH-TEMPERATURE; BARYOGENESIS; ASYMMETRY; MODEL; GAUGE AB We examine the dynamics of the electroweak phase transition in the early Universe. For Higgs boson masses in the range 57 less-than-or-equal-to m(H) less-than-or-equal-to 150 GeV and top quark masses less than 200 GeV, regions of symmetric and asymmetric vacuum coexist to below the critical temperature, due to efficient thermal nucleation of subcritical fluctuations of the asymmetric phase within the symmetric phase. We propose that the transition to the asymmetric vacuum is completed by percolation of these fluctuations. Our results are relevant to scenarios of baryogenesis that invoke a weakly first-order electroweak transition. C1 FERMI NATL ACCELERATOR LAB,NASA,CTR ASTROPHYS,BATAVIA,IL 60510. UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. RP GLEISER, M (reprint author), DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755, USA. NR 28 TC 55 Z9 55 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 31 PY 1992 VL 69 IS 9 BP 1304 EP 1307 DI 10.1103/PhysRevLett.69.1304 PG 4 WC Physics, Multidisciplinary SC Physics GA JK864 UT WOS:A1992JK86400004 ER PT J AU BOLTON, T BROWN, JS BUNNELL, KO BURCHELL, M BURNETT, TH CASSELL, RE COFFMAN, D COWARD, DH COYLE, P DEJONGH, F DRINKARD, J DUBOIS, GP EIGEN, G EISENSTEIN, BI FREESE, T GATTO, C GLADDING, G HEUSCH, CA HITLIN, DG IZEN, JM KIM, PC LABS, J LI, A LOCKMAN, WS MALLIK, U MATTHEWS, CG MIR, R MOCKETT, PM ODIAN, A PARRISH, L PITMAN, D RICHMAN, JD SADROZINSKI, HFW SCARLATELLA, M SCHALK, TL SCHINDLER, RH SEIDEN, A STOCKDALE, IE TOKI, W TRIPSAS, B WANG, MZ WEINSTEIN, AJ WESELER, S WILLUTZKI, HJ WISNIEWSKI, WJ XU, R ZHU, Y AF BOLTON, T BROWN, JS BUNNELL, KO BURCHELL, M BURNETT, TH CASSELL, RE COFFMAN, D COWARD, DH COYLE, P DEJONGH, F DRINKARD, J DUBOIS, GP EIGEN, G EISENSTEIN, BI FREESE, T GATTO, C GLADDING, G HEUSCH, CA HITLIN, DG IZEN, JM KIM, PC LABS, J LI, A LOCKMAN, WS MALLIK, U MATTHEWS, CG MIR, R MOCKETT, PM ODIAN, A PARRISH, L PITMAN, D RICHMAN, JD SADROZINSKI, HFW SCARLATELLA, M SCHALK, TL SCHINDLER, RH SEIDEN, A STOCKDALE, IE TOKI, W TRIPSAS, B WANG, MZ WEINSTEIN, AJ WESELER, S WILLUTZKI, HJ WISNIEWSKI, WJ XU, R ZHU, Y TI PARTIAL-WAVE ANALYSIS OF J/PSI-]GAMMA-ETA-PI+PI- SO PHYSICAL REVIEW LETTERS LA English DT Article ID ETA-PI+PI SYSTEM; SPIN-PARITY ANALYSIS; 300 GEV/C; 85 GEV/C; RESONANCES; DECAYS; J/PSI AB We present a study of the decay J/psi--> gamma-eta-pi+pi- using the Mark III detector at the SLAC e+e- storage ring SPEAR. A partial-wave amplitude analysis is performed on the eta-pi+pi- system in the mass region from 1.2 to 1.5 GeV. We observe two eta+eta- resonances, each decaying via a0(980)pi. We identify one as the axial-vector meson f1(1285) and the other as a pseudoscalar resonance at 1.40 GeV. C1 UNIV CALIF SANTA CRUZ,SANTA CRUZ INST PARTICLE PHYS,SANTA CRUZ,CA 95064. UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801. UNIV IOWA,DEPT PHYS,IOWA CITY,IA 52242. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. UNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195. RP BOLTON, T (reprint author), CALTECH,DEPT PHYS,PASADENA,CA 91125, USA. NR 25 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 31 PY 1992 VL 69 IS 9 BP 1328 EP 1331 DI 10.1103/PhysRevLett.69.1328 PG 4 WC Physics, Multidisciplinary SC Physics GA JK864 UT WOS:A1992JK86400010 ER PT J AU WILKS, SC KRUER, WL TABAK, M LANGDON, AB AF WILKS, SC KRUER, WL TABAK, M LANGDON, AB TI ABSORPTION OF ULTRA-INTENSE LASER-PULSES SO PHYSICAL REVIEW LETTERS LA English DT Article ID CRITICAL SURFACE; PLASMA; PROPAGATION AB We use simulations to investigate the interaction of ultra-intense laser pulses with a plasma. With an intensity greater than 10(18) W/cm2, these pulses have a pressure greater than 10(3) Mbar and drive the plasma relativistically. Hole boring by the light beam is a key feature of the interaction. We find substantial absorption into heated electrons with a characteristic temperature of order the ponderomotive potential. Other effects include a dependence on the polarization of the incident light, strong magnetic field generation, and a period of intense instability generation in the underdense plasma. RP WILKS, SC (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 25 TC 1267 Z9 1300 U1 6 U2 67 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 31 PY 1992 VL 69 IS 9 BP 1383 EP 1386 DI 10.1103/PhysRevLett.69.1383 PG 4 WC Physics, Multidisciplinary SC Physics GA JK864 UT WOS:A1992JK86400024 ER PT J AU FORTNER, J SABOUNGI, ML ENDERBY, JE AF FORTNER, J SABOUNGI, ML ENDERBY, JE TI CHARGE-TRANSFER IN LIQUID SEMICONDUCTORS - THE K-TE SYSTEM SO PHYSICAL REVIEW LETTERS LA English DT Article ID TELLURIUM; ALLOYS; SCATTERING AB The neutron diffraction patterns of molten KxTe1-x alloys for x =0.12 and x =0.50 demonstrate the persistence of covalently bonded tellurium in the liquid. In the case of liquid K0.12Te0.88, the measured structure is dominated by the Te-Te contribution, and is remarkably similar to that of pure liquid tellurium. The equiatomic alloy K0.50Te0.50 is shown to contain mostly Te pairs which are identified with Zintl ions, Te2(2-). The presence of these ions explains the semiconducting behavior of these alloys deduced from recent electrical transport measurements. C1 UNIV BRISTOL,HH WILLS PHYS LAB,BRISTOL BS8 1TL,AVON,ENGLAND. RP FORTNER, J (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 21 TC 31 Z9 31 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 31 PY 1992 VL 69 IS 9 BP 1415 EP 1418 DI 10.1103/PhysRevLett.69.1415 PG 4 WC Physics, Multidisciplinary SC Physics GA JK864 UT WOS:A1992JK86400032 ER PT J AU LAWRENCE, TW SZOKE, A LAUGHLIN, RB AF LAWRENCE, TW SZOKE, A LAUGHLIN, RB TI ABSENCE OF CIRCULAR-DICHROISM IN HIGH-TEMPERATURE SUPERCONDUCTORS SO PHYSICAL REVIEW LETTERS LA English DT Article ID YBA2CU3O7 THIN-FILMS AB We have repeated and improved upon the experiment of Lyons et al., in which the observation of circular dichroism in high-T(c) superconductors was reported. We found a simple extension to the previous technique which makes the apparatus exclusively sensitive to T-violating circular dichroism. We find no evidence for a temperature-dependent signal in all YBa2Cu3O7-delta samples studied. We establish sensitivity of the apparatus to surface roughness and ascribe the previously observed signal to possible surface contamination. C1 STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305. RP LAWRENCE, TW (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 18 TC 42 Z9 42 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 31 PY 1992 VL 69 IS 9 BP 1439 EP 1442 DI 10.1103/PhysRevLett.69.1439 PG 4 WC Physics, Multidisciplinary SC Physics GA JK864 UT WOS:A1992JK86400038 ER PT J AU DAU, H SAUER, K AF DAU, H SAUER, K TI ELECTRIC-FIELD EFFECT ON THE PICOSECOND FLUORESCENCE OF PHOTOSYSTEM-II AND ITS RELATION TO THE ENERGETICS AND KINETICS OF PRIMARY CHARGE SEPARATION SO BIOCHIMICA ET BIOPHYSICA ACTA LA English DT Article DE CHARGE SEPARATION; DIFFUSION POTENTIAL; FLUORESCENCE; FREE ENERGY; PICOSECOND; THYLAKOID MEMBRANE; TIME-RESOLVED SPECTROSCOPY ID PHOTOSYNTHETIC REACTION CENTERS; CHLOROPHYLL FLUORESCENCE; SPINACH-CHLOROPLASTS; ENERGY-TRANSFER; BACTERIAL PHOTOSYNTHESIS; EXCITATION-ENERGY; EXCITON MIGRATION; ROOM-TEMPERATURE; DECAY KINETICS; SYSTEMS AB Across the thylakoid membrane of spinach chloroplasts a diffusion potential of defined magnitude can be created by rapid changes in the KCl concentration. The resulting electric field leads to an increase in the yield of photosystem II (PS II) fluorescence for positive membrane voltages - positive in the inner thylakoid space - and a decrease for negative membrane voltages (Dau and Sauer, 1991, BBA 1098, 49-60). We have now studied this phenomenon by measurement of picosecond fluorescence decay. Based on the kinetic PS II model of Schatz et al. (1988, Biophys. J. 54, 397-405), the fluorescence decays were interpreted in terms of the rate constants of primary charge separation (formation of reaction center cation radical and pheophytin anion radical), primary charge recombination (recombination of primary biradical to chlorophyll singlet state) and secondary charge separation (reduction of primary quinone acceptor). For increasingly positive thylakoid voltages, the results arc indicative of a relatively small but significant decrease in the rate constant of primary charge separation (by about 8% per + 100 mV thylakoid voltage) and a much larger increase (by about 50% per + 100 mV) of the rate constant of primary charge recombination. Nevertheless, due to the high sensitivity of the PS II fluorescence yield to changes in the rate constant of primary charge separation, the field-induced increase of fluorescence yield results mainly from the decreased rate constant of primary charge separation, and to a smaller extent (about one third of the increase) from the increased rate constant of charge recombination. The free energy difference of the primary radical pair was found to change by 17 meV per 100 mV thylakoid voltage. The relation between the rate constant of primary charge separation and the free energy difference appears to bc linear within the accessible range of free energy changes (-15 meV to +22 meV); the rate constant of primary charge separation increases with increasingly negative free energy differences by 6% per 10 meV. This free energy dependence is compared with model calculations for a sequential two-step and for a super-exchange model of the primary PS II charge separation. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RP DAU, H (reprint author), LAWRENCE BERKELEY LAB,DIV CHEM BIODYNAM,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 57 TC 21 Z9 24 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-3002 J9 BIOCHIM BIOPHYS ACTA PD AUG 28 PY 1992 VL 1102 IS 1 BP 91 EP 106 PG 16 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA JM752 UT WOS:A1992JM75200011 ER PT J AU ENGELKE, R AF ENGELKE, R TI CALCULATED PROPERTIES OF THE 22 CARBON NITROGEN CUBANOIDS SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article AB Some properties of the 22 possible carbon/nitrogen cubanoids (i.e., (CH)8-nNn 0 less-than-or-equal-to n less-than-equal-to 8) have been calculated and are presented here. By use of the AM1 and PM3 semiempirical models, all the C/N cubanoids are shown to correspond to stationary points on the appropriate energy hypersurfaces. These stationary points are demonstrated to be local stable points via vibrational frequency calculations. The AM1 and PM3 models yield significantly different DELTA-H(f)s, and this disparity increases as the amount of nitrogen in the cubanoid increases. The AM1 and PM3 DELTA-H(f)s are compared with MNDO values and, in a few high-symmetry cases, with RBF/6-31G*//results. The potential of the C/N cubanoids as energetic materials is examined by prediction of two detonation properties of the condensed-phase materials. In order to make these predictions, condensed phase mass densities (rho(o)) are calculated with Stine's method. Then, by use of the rho(o) values and the calculated DELTA-H(f)s, Chapman-Jouguet detonation pressures and velocities are determined. The calculations indicate that any of the C/N cubanoids that contain four nitrogens or more would be high-performance energetic materials. One highly symmetric nitrated cubanoid structure (T(d) symmetry C4(NO2)4N4) is also examined using the same approach. RP ENGELKE, R (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 18 TC 41 Z9 41 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD AUG 28 PY 1992 VL 57 IS 18 BP 4841 EP 4846 DI 10.1021/jo00044a017 PG 6 WC Chemistry, Organic SC Chemistry GA JL292 UT WOS:A1992JL29200017 ER PT J AU CHANG, HLM GAO, Y ZHANG, TJ LAM, DJ AF CHANG, HLM GAO, Y ZHANG, TJ LAM, DJ TI HETEROEPITAXY OF TIO2, VO2 FILMS AND TIO2/VO2 MULTILAYERS GROWN ON SAPPHIRE (11(2)BAR-0) BY METALLOORGANIC CHEMICAL VAPOR-DEPOSITION SO THIN SOLID FILMS LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL WORKSHOP ON THE SCIENCE AND TECHNOLOGY OF THIN FILMS FOR THE 21ST-CENTURY CY JUL 28-AUG 02, 1991 CL NORTHWESTERN UNIV, EVANSTON, IL SP NATL SCI FDN, NORTHWESTERN UNIV, MAT RES SOC, INT UNION MAT RES SOC HO NORTHWESTERN UNIV AB Single-crystal TiO2 and VO2 films in single-layer and multilayer configurations have been successfully grown on sapphire (1120BAR) by the metallo-organic chemical vapor deposition technique. The epitaxial orientation relationships were determined by the X-ray diffraction and transmission electron microscopy techniques. High resolution electron microscopy studies were performed to examine the microstructures of the films at atomic level. RP CHANG, HLM (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 14 TC 9 Z9 11 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD AUG 28 PY 1992 VL 216 IS 1 BP 4 EP 7 DI 10.1016/0040-6090(92)90859-A PG 4 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA JK300 UT WOS:A1992JK30000004 ER PT J AU ECKSTEIN, JN BOZOVIC, I KLAUSMEIERBROWN, M VIRSHUP, G RALLS, KS AF ECKSTEIN, JN BOZOVIC, I KLAUSMEIERBROWN, M VIRSHUP, G RALLS, KS TI ATOMICALLY LAYERED GROWTH AND PROPERTIES OF HIGH-TEMPERATURE SUPERCONDUCTING SINGLE-CRYSTAL FILMS AND SUPERLATTICES SO THIN SOLID FILMS LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL WORKSHOP ON THE SCIENCE AND TECHNOLOGY OF THIN FILMS FOR THE 21ST-CENTURY CY JUL 28-AUG 02, 1991 CL NORTHWESTERN UNIV, EVANSTON, IL SP NATL SCI FDN, NORTHWESTERN UNIV, MAT RES SOC, INT UNION MAT RES SOC HO NORTHWESTERN UNIV ID THIN-FILMS; YBA2CU3O7-X/PRBA2CU3O7-X SUPERLATTICES; BI2SR2CA2CU3OX AB In atomic layer-by-layer molecular beam epitaxy of high T(c) superconducting films, the chemical reaction coordinate of each molecular layer is monitored and controlled during growth. Distinct synthesis routes are characterized by different intermediate states representing different degrees of order or disorder during monolayer growth. Individual molecular layers with bulk-like superconductive properties can be grown and stacked together with molecular layers having other electronic properties. Trilayer junctions have been grown with single molecular barrier layers of metastable compounds such as Bi2Sr2Can-1CunO2n+4, where n ranged from 5-11, and the electronic properties of such barrier layers have been modified by doping. By engineering the transport properties of the barrier layer, tuning over three orders of magnitude in critical current density has been obtained with approximately constant I(c)R(n) voltage. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP ECKSTEIN, JN (reprint author), VARIAN RES CTR,PALO ALTO,CA 94304, USA. NR 15 TC 22 Z9 22 U1 0 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD AUG 28 PY 1992 VL 216 IS 1 BP 8 EP 13 DI 10.1016/0040-6090(92)90860-E PG 6 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA JK300 UT WOS:A1992JK30000005 ER PT J AU FALICOV, LM AF FALICOV, LM TI SURFACE, INTERFACE AND THIN-FILM MAGNETISM - AN OVERVIEW SO THIN SOLID FILMS LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL WORKSHOP ON THE SCIENCE AND TECHNOLOGY OF THIN FILMS FOR THE 21ST-CENTURY CY JUL 28-AUG 02, 1991 CL NORTHWESTERN UNIV, EVANSTON, IL SP NATL SCI FDN, NORTHWESTERN UNIV, MAT RES SOC, INT UNION MAT RES SOC HO NORTHWESTERN UNIV AB A general view is presented of the state of the art in the field of surface, interface and thin film magnetism. The following items are discussed: (1) new growth techniques which produce atomically engineered novel materials; (2) characterization techniques to measure magnetic properties of these systems; and (3) computational advances which allow large complex calculations. Issues of fundamental and technological interest for possible future research are highlighted. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP FALICOV, LM (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 1 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD AUG 28 PY 1992 VL 216 IS 1 BP 169 EP 173 DI 10.1016/0040-6090(92)90889-J PG 5 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA JK300 UT WOS:A1992JK30000034 ER PT J AU CERNY, R BONHOMME, F YVON, K FISCHER, P ZOLLIKER, P COX, DE HEWAT, A AF CERNY, R BONHOMME, F YVON, K FISCHER, P ZOLLIKER, P COX, DE HEWAT, A TI HEXAMAGNESIUM DICOBALT UNDECADEUTERIDE MG6CO2D11 - CONTAINING [COD4]5- AND [COD5]4- COMPLEX ANIONS CONFORMING TO THE 18-ELECTRON RULE SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article ID POWDER DIFFRACTION PATTERNS; RIETVELD ANALYSIS; SYNCHROTRON; MG2COH5; NEUTRON AB Mg6Co2D11 crystallizes in space group Pnma, a = 8.1000(2) angstrom, b = 10.0643(2) angstrom, c = 18.5664(4) angstrom, V = 1513 angstrom3, Z = 8. The partly disordered structure contains 14 symmetry-independent deuterium atoms, of which 9 are coordinated to cobalt in square-pyramidal [CoD5]4- and saddle-like [CoD4]5- complex anions, and 5 are bonded to magnesium only. The Co-D bond distances range between 1.52(1) angstrom and 1.62(2) angstrom. The limiting ionic formula can be written as 4Mg6Co2D11 = 5MgD2.19Mg2+.2[CoD5]4-.6[CoD4]5-. The 63-parameter structure was solved ab initio and refined from joint synchrotron and neutron high resolution powder diffraction data. C1 CHARLES UNIV,FAC MATH & PHYS,CS-12116 PRAGUE 2,CZECHOSLOVAKIA. ETH ZURICH,NEUTRONENSTREUUNG LAB,CH-5232 VILLIGEN PSI,SWITZERLAND. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE. RP CERNY, R (reprint author), UNIV GENEVA,CRISTALLOG LAB,24 QUAI E ANSERMET,CH-1211 GENEVA 4,SWITZERLAND. RI Zolliker, Peter/F-7729-2013 OI Zolliker, Peter/0000-0003-0935-0253 NR 17 TC 35 Z9 35 U1 0 U2 6 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD AUG 27 PY 1992 VL 187 IS 1 BP 233 EP 241 DI 10.1016/0925-8388(92)90537-J PG 9 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA JM834 UT WOS:A1992JM83400025 ER PT J AU FALKOWSKI, PG WILSON, C AF FALKOWSKI, PG WILSON, C TI PHYTOPLANKTON PRODUCTIVITY IN THE NORTH PACIFIC-OCEAN SINCE 1900 AND IMPLICATIONS FOR ABSORPTION OF ANTHROPOGENIC CO2 SO NATURE LA English DT Article ID OPTICAL-PROPERTIES; NATURAL-WATERS; CARBON; TRANSPARENCY; CHLOROPHYLL; PIGMENTS; NITROGEN; EXPORT; COLOR AB THE world's carbon budget has not been in steady state since the beginning of the Industrial Revolution1. At present, carbon dioxide released by anthropogenic activities adds about 7 +/- 1.2 gigatonnes (Gt) C yr-1 to the atmosphere, of which about 2 Gt C yr-1 is thought to be sequestered in the oceans2. In the steady state, phytoplankton fix about 35-50 Gt C yr-1, representing a significant component of the natural carbon cycle1. If ocean productivity were changing, these biological processes could have a significant influence on anthropogenic CO2 levels by drawing down the CO2 concentration in surface waters and increasing the concentration gradient across the air-sea interface1,3,4. The question of productivity changes is unresolved, however2,5,6. Venrick et al.7 reported that phytoplankton chlorophyll concentrations had roughly doubled in the central North Pacific gyre between 1965 and 1985. Here we use historical records of Secchi depth data to investigate whether such dramatic changes in phytoplankton biomass have occurred throughout the North Pacific ocean during this century. We find that, although very minor changes may have occurred in this basin over the past 70 years, they are too small to have a significant effect on the rise in atmospheric CO2 concentrations. C1 UNIV PARIS 06, CNRS, PHYS & CHIM MARINES LAB, F-06230 VILLEFRANCHE SUR MER, FRANCE. RP FALKOWSKI, PG (reprint author), BROOKHAVEN NATL LAB, DIV OCEANOG & ATMOSPHER SCI, UPTON, NY 11973 USA. RI Wilson, Cara/A-8816-2009; OI Wilson, Cara/0000-0001-9318-2322 NR 33 TC 79 Z9 82 U1 1 U2 16 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 27 PY 1992 VL 358 IS 6389 BP 741 EP 743 DI 10.1038/358741a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA JK699 UT WOS:A1992JK69900047 ER PT J AU RAMAKRISHNAN, V WHITE, SW AF RAMAKRISHNAN, V WHITE, SW TI THE STRUCTURE OF RIBOSOMAL PROTEIN-S5 REVEALS SITES OF INTERACTION WITH 16S RIBOSOMAL-RNA SO NATURE LA English DT Article ID BACILLUS-STEAROTHERMOPHILUS RIBOSOME; ESCHERICHIA-COLI RIBOSOME; RNA-BINDING DOMAIN; CRYSTAL-STRUCTURE; SUBUNITS; S5; GENES; RECONSTITUTION; MUTATIONS; SEQUENCE AB UNDERSTANDING the process whereby the ribosome translates the genetic code into protein molecules will ultimately require high-resolution structural information, and we report here the first crystal structure of a protein from the small ribosomal subunit. This protein, S5, has a molecular mass of 17,500 and is highly conserved in all lifeforms1-4. The molecule contains two distinct alpha/beta-domains that have structural similarities to several other proteins that are components of ribonucleoprotein complexes. Mutations in S5 result in several phenotypes which suggest that S5 may have a role in translational fidelity and translocation. These include ribosome ambiguity or ram5, reversion from streptomycin dependence6 and resistance to spectinomycin6. Also, a cold-sensitive, spectinomycin-resistant mutant of S5 has been identified which is defective in initiation7. Here we show that these mutations map to two distinct regions of the molecule which seem to be sites of interaction with ribosomal RNA. A structure/function analysis of the molecule reveals discrepancies with current models8,9 of the 30S subunit. C1 MRC,MOLEC BIOL LAB,CAMBRIDGE CB2 2QH,ENGLAND. DUKE UNIV,MED CTR,DEPT MICROBIOL,DURHAM,NC 27710. RP RAMAKRISHNAN, V (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. OI Ramakrishnan, V/0000-0002-4699-2194 NR 33 TC 143 Z9 151 U1 2 U2 6 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW SN 0028-0836 J9 NATURE JI Nature PD AUG 27 PY 1992 VL 358 IS 6389 BP 768 EP 771 DI 10.1038/358768a0 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA JK699 UT WOS:A1992JK69900057 PM 1508272 ER PT J AU BREKKE, L DYKSTRA, H HUGHES, SJ IMBO, TD AF BREKKE, L DYKSTRA, H HUGHES, SJ IMBO, TD TI KNOTS AND LINKS OF NONABELIAN STRING SO PHYSICS LETTERS B LA English DT Article ID NON-ABELIAN VORTICES; DISCRETE QUANTUM HAIR; ORDERED MEDIA; SYMMETRY; DEFECTS; CHARGE AB We consider a class of closed stringlike configurations, called essentially knotted, which occur in certain (3 + 1)-dimensional Yang-Mills-Higgs theories where a compact gauge group G breaks to a finite, nonabelian subgroup H. Such objects are labelled by more than one flux element in H, and cannot be deformed into the vacuum without overlapping the cores of two segments of string carrying noncommuting fluxes. Analogous results for multicomponent links of string are also given. Our analysis is performed within a general topological framework for discussing the knotting and linking of strings in spontaneously broken gauge theories. C1 FERMI NATL ACCELERATOR LAB, THEORY GRP, BATAVIA, IL 60510 USA. HARVARD UNIV, LYMAN LAB PHYS, CAMBRIDGE, MA 02138 USA. RP UNIV ILLINOIS, DEPT PHYS, CHICAGO, IL 60680 USA. NR 23 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 27 PY 1992 VL 288 IS 3-4 BP 273 EP 278 DI 10.1016/0370-2693(92)91103-G PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JL452 UT WOS:A1992JL45200008 ER PT J AU ADEVA, B ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC AF ADEVA, B ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC TI AN IMPROVED MEASUREMENT OF B(0)-(B)BAR(0) MIXING IN Z(0) DECAYS SO PHYSICS LETTERS B LA English DT Article ID E+E ANNIHILATION; Z0 DECAYS; COLLIDER; PARTICLE AB A more precise determination of the B0-B0BAR mixing parameter in Z0 decays based on a fourfold increase in statistics has been made using the 1990 and 1991 L3 data. The analysis of the dilepton events, muons and electrons, gives: chi(B) = 0. 121 +/- 0.017 (stat) +/- 0.006 (sys). Using the value of chi(d) measured at the UPSILON(4S) we derive the following limit for chi(s): chi(S) > 0.16 (90% CL). C1 IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CTR INVEST ENERGET MEDIOAMBIENTALES & TECHNOL, E-28040 MADRID, SPAIN. BOSTON UNIV, BOSTON, MA 02215 USA. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. NAPLES UNIV, I-80125 NAPLES, ITALY. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. SWISS FED INST TECHNOL, CH-8093 ZURICH, SWITZERLAND. MIT, CAMBRIDGE, MA 02139 USA. ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, USSR. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. INST THEORET & EXPTL PHYS, 117259 MOSCOW, USSR. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA. RHEIN WESTFAL TH AACHEN, INST PHYS 1, W-5100 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, W-5100 AACHEN, GERMANY. IST NAZL FIS NUCL, ROME, ITALY. UNIV ROME LA SAPIENZA, I-00185 ROME, ITALY. PRINCETON UNIV, PRINCETON, NJ 08544 USA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. LAB PHYS PARTICULES, F-74941 ANNELY VIEUX, FRANCE. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92182 USA. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, F-69622 VILLEURBANNE, FRANCE. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA. CHINESE UNIV SCI & TECHNOL, HEFEI 230029, PEOPLES R CHINA. OAK RIDGE NATL LAB, OAK RIDGE, TN 37830 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. SHANGHAI INST CERAM, SHANGHAI, PEOPLES R CHINA. INST HOCHENERGIEPHYS, O-1615 ZEUTHEN, GERMANY. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. CALTECH, PASADENA, CA 91125 USA. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. UNIV HAMBURG, W-2000 HAMBURG 13, GERMANY. RP ADEVA, B (reprint author), CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. RI van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Chmeissani, Mokhtar/G-4346-2015; Adeva, Bernardo /L-1378-2014; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Kamyshkov, Yuri/J-7999-2016; Fiandrini, Emanuele/C-4549-2008; Berdugo, Javier/A-2858-2015; Leijtens, Xaveer/F-3302-2010; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cerrada, Marcos/J-6934-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014 OI van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Chmeissani, Mokhtar/0000-0002-2287-4791; Adeva, Bernardo /0000-0001-9756-3712; Arce, Pedro/0000-0003-3009-0484; Kamyshkov, Yuri/0000-0002-3789-7152; Berdugo, Javier/0000-0002-7911-8532; Leijtens, Xaveer/0000-0001-7794-8236; Ludovici, Lucio/0000-0003-1970-9960; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ferguson, Thomas/0000-0001-5822-3731 NR 23 TC 22 Z9 22 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 27 PY 1992 VL 288 IS 3-4 BP 395 EP 403 DI 10.1016/0370-2693(92)91119-T PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JL452 UT WOS:A1992JL45200024 ER PT J AU ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUITJEN, H KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDEERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC AF ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUITJEN, H KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDEERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC TI A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) SO PHYSICS LETTERS B LA English DT Article ID DECAY AB We have measured the total and differential cross sections of the reaction e+ e- --> gamma-gamma(gamma) at center-of-mass energies around 91 GeV, with an integrated luminosity of 14.2 pb-1. The results are in good agreement with QED predictions. We set lower limits, at 95% confidence level, on the QED cutoff parameters of LAMBDA+ > 139 GeV, LAMBDA- > 108 GeV and on the mass of an excited electron of m(e*) > 127 GeV. We searched for Z0 rare decays with photonic signatures in the final state. Upper limits, at 95% confidence level, for the branching ratio of ZO decaying into pi-0-gamma/gamma-gamma, eta-gamma and gamma-gamma-gamma are 1.2 x 10(-4), 1.8 x 10(-4), 3.3 x 10(-5) respectively. C1 UNIV FLORENCE, I-50125 FLORENCE, ITALY. CTR INVEST ENERGET MEDIOAMBIENTALES & TECHNOL, E-28040 MADRID, SPAIN. BOSTON UNIV, BOSTON, MA 02215 USA. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. NAPLES UNIV, I-80125 NAPLES, ITALY. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. SWISS FED INST TECHNOL, CH-8093 ZURICH, SWITZERLAND. MIT, CAMBRIDGE, MA 02139 USA. ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, USSR. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. MOSCOW THEORET & EXPTL PHYS INST, 117259 MOSCOW, USSR. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA. RHEIN WESTFAL TH AACHEN, INST PHYS 1, W-5100 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, W-5100 AACHEN, GERMANY. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROME LA SAPIENZA, I-00185 ROME, ITALY. PRINCETON UNIV, PRINCETON, NJ 08544 USA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. LAB PHYS PARTICULES, F-74941 ANNECY LE VIEUX, FRANCE. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92182 USA. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, F-69622 VILLEURBANNE, FRANCE. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA. CHINESE UNIV SCI & TECHNOL, HEFEI 230029, PEOPLES R CHINA. OAK RIDGE NATL LAB, OAK RIDGE, TN 37830 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. SHANGHAI INST CERAM, SHANGHAI, PEOPLES R CHINA. DESY, INST HOCHENERGIEPHYS, O-1615 ZEUTHEN, GERMANY. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. CALTECH, PASADENA, CA 91125 USA. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. UNIV HAMBURG, W-2000 HAMBURG 13, GERMANY. RP ADRIANI, O (reprint author), IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. RI van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Chmeissani, Mokhtar/G-4346-2015; rodriguez calonge, francisco javier/H-9682-2015; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Kamyshkov, Yuri/J-7999-2016; Tsaregorodtsev, Andrei/E-3873-2016; Fiandrini, Emanuele/C-4549-2008; Leijtens, Xaveer/F-3302-2010; Berdugo, Javier/A-2858-2015; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cerrada, Marcos/J-6934-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014 OI Diemoz, Marcella/0000-0002-3810-8530; Filthaut, Frank/0000-0003-3338-2247; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Chmeissani, Mokhtar/0000-0002-2287-4791; Arce, Pedro/0000-0003-3009-0484; Kamyshkov, Yuri/0000-0002-3789-7152; Longo, Egidio/0000-0001-6238-6787; Tsaregorodtsev, Andrei/0000-0003-4618-520X; Leijtens, Xaveer/0000-0001-7794-8236; Berdugo, Javier/0000-0002-7911-8532; Ludovici, Lucio/0000-0003-1970-9960; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ferguson, Thomas/0000-0001-5822-3731 NR 20 TC 21 Z9 21 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 27 PY 1992 VL 288 IS 3-4 BP 404 EP 411 DI 10.1016/0370-2693(92)91120-X PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JL452 UT WOS:A1992JL45200025 ER PT J AU ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUITJEN, H KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC AF ADRIANI, O AGUILARBENITEZ, M AHLEN, S AKBARI, H ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELOV, T ANTONOV, L ANTREASYAN, D ARCE, P AREFIEV, A ATAMANCHUK, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BAO, J BARILLERE, R BARONE, L BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BEHRENS, J BEINGESSNER, S BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BLUMENFELD, B BOBBINK, GJ BOCCIOLINI, M BOCK, R BOHM, A BORGIA, B BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BROCK, IC BROOKS, M BUISSON, C BUJAK, A BURGER, JD BURGER, WJ BURQ, JP BUSENITZ, J CAI, XD CAPELL, M CARIA, M CARLINO, G CARMINATI, F CARTACCI, AM CERRADA, M CESARONI, F CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, GM CHEN, HF CHEN, HS CHEN, J CHEN, M CHEN, ML CHEN, WY CHIEFARI, G CHIEN, CY CHMEISSANI, M CHUNG, S CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N CONTIN, A CRIJNS, F CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DHINA, M DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DOVA, MT DRAGO, E DRIEVER, T DUCHESNEAU, D DUINKER, P ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAN, SJ FACKLER, O FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, J FILTHAUT, F FINOCCHIARO, G FISHER, PH FORCONI, G FOREMAN, T FREUDENREICH, K FRIEBEL, W FUKUSHIMA, M GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GAU, SS GELE, D GENTILE, S GOLDFARB, S GONG, ZF GONZALEZ, E GOTTLICHER, P GOUGAS, A GOUJON, D GRATTA, G GRINNELL, C GRUENEWALD, M GU, C GUANZIROLI, M GUO, JK GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HANGARTER, K HASAN, A HAUSCHILDT, D HE, CF HEBBEKER, T HEBERT, M HERTEN, G HERTEN, U HERVE, A HILGERS, K HOFER, H HOORANI, H HU, G HU, GQ ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JEZEQUEL, S JIN, BN JONES, LW KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KINNISON, WW KIRKBY, D KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KRIVSHICH, A KUITJEN, H KUMAR, KS KUNIN, A LANDI, G LANSKE, D LANZANO, S LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEEDOM, I LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LETTRY, J LEYTENS, X LI, C LI, HT LI, PJ LI, XG LIAO, JY LIN, WT LIN, ZY LINDE, FL LINDEMANN, B LINNHOFER, D LISTA, L LIU, Y LOHMANN, W LONGO, E LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L MA, WG MACDERMOTT, M MALHOTRA, PK MALIK, R MALININ, A MANA, C MAO, DN MAO, YF MAOLINBAY, M MARCHESINI, P MARION, F MARIN, A MARTIN, JP MARTINEZLASO, L MARZANO, F MASSARO, GGG MATSUDA, T MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MEINHOLZ, T MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NADTOCHY, A NAGY, E NAPOLITANO, M NEWMAN, H NEYER, C NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUSS, F PEI, YJ PERRETGALLIX, D PERRIER, J PEVSNER, A PICCOLO, D PIERI, M PIROUE, PA PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RAVEN, G RAZIS, P READ, K REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIND, O RIZVI, HA RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSE, J ROSIERLEES, S ROSMALEN, R ROSSELET, P RUBBIA, A RUBIO, JA RYKACZEWSKI, H SACHWITZ, M SAJAN, E SALICIO, J SALICIO, JM SANDERS, GS SANTOCCHIA, A SARAKINOS, MS SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHEGELSKY, V SCHMIEMANN, K SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTE, S SCHULTZE, K SCHUTTE, J SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEN, DZ SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SODERSTROM, E SOPCZAK, A SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STAROSTA, R STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K STRINGFELLOW, BC SUDHAKAR, K SULTANOV, G SUMNER, RL SUN, LZ SUTER, H SUTTON, RB SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMMERMANS, C TING, SCC TING, SM TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUNG, KL ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, CR WANG, GH WANG, JH WANG, QF WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WENAUS, TJ WENNINGER, J WHITE, M WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, RJ WU, SX WU, YG WYSLOUCH, B XIE, YY XU, YD XU, ZZ XUE, ZL YAN, DS YAN, XJ YANG, BZ YANG, CG YANG, G YANG, KS YANG, QY YANG, ZQ YE, CH YE, JB YE, Q YEH, SC YIN, ZW YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, JF ZHU, RY ZHUANG, HL ZICHICHI, A VANDERZWAAN, BCC TI INCLUSIVE J-PRODUCTION IN Z(0) DECAYS SO PHYSICS LETTERS B LA English DT Article ID E+E ANNIHILATION; FRAGMENTATION; B->PSI-X; Z0 AB Inclusive J production in Z0 decays is observed via the leptonic decay mode J --> l+ l- (l = e,mu). We measure the branching ratio Br(Z0 --> J + X) = (4.1 +/- 0.7 (stat.) +/- 0.3 (sys.)) x 10(-3). We have calculated the fraction of the J mesons from b-hadron decay and find a branching ratio of Br(b --> J + X) = (1.3 +/- 0.2 (stat.) +/- 0.2 (sys.)) x 10(-2). We determine the average fractional energy of bottom hadrons [x(E)] = 0.70 +/- 0.03 (stat. ) +0.02/-0.01 (sys. ) using the momentum spectrum of the J mesons. From a study of the angle between the J and the most energetic jet, we set an upper limit on the branching ratio Br(Z0 --> qqg*BAR;g* --> J + X) < 7.0 x 10(-4) at 90% confidence level. C1 UNIV FLORENCE, I-50125 FLORENCE, ITALY. CTR INVEST ENERGET MEDIOAMBIENTALES & TECNOL, E-28040 MADRID, SPAIN. BOSTON UNIV, BOSTON, MA 02215 USA. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. NAPLES UNIV, I-80125 NAPLES, ITALY. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. SWISS FED INST TECHNOL, CH-8093 ZURICH, SWITZERLAND. MIT, CAMBRIDGE, MA 02139 USA. ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, USSR. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. MOSCOW THEORET & EXPTL PHYS INST, 117259 MOSCOW, USSR. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA. RHEIN WESTFAL TH AACHEN, INST PHYS 1, W-5100 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, W-5100 AACHEN, GERMANY. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROME LA SAPIENZA, I-00185 ROME, ITALY. PRINCETON UNIV, PRINCETON, NJ 08544 USA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. LAB PHYS PARTICULES, F-74941 ANNECY LE VIEUX, FRANCE. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST, HUNGARY. NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92182 USA. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, F-69622 VILLEURBANNE, FRANCE. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. IST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA. CHINESE UNIV SCI & TECHNOL, HEFEI 230029, PEOPLES R CHINA. OAK RIDGE NATL LAB, OAK RIDGE, TN 37830 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. SHANGHAI INST CERAM, SHANGHAI, PEOPLES R CHINA. DESY, INST HOCHENERGIEPHYS, O-1615 ZEUTHEN, GERMANY. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. CALTECH, PASADENA, CA 91125 USA. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. UNIV HAMBURG, W-2000 HAMBURG 13, GERMANY. RP ADRIANI, O (reprint author), IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. RI van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Chmeissani, Mokhtar/G-4346-2015; rodriguez calonge, francisco javier/H-9682-2015; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Kamyshkov, Yuri/J-7999-2016; Tsaregorodtsev, Andrei/E-3873-2016; Fiandrini, Emanuele/C-4549-2008; Leijtens, Xaveer/F-3302-2010; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cerrada, Marcos/J-6934-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014; Berdugo, Javier/A-2858-2015 OI Diemoz, Marcella/0000-0002-3810-8530; Bertucci, Bruna/0000-0001-7584-293X; Filthaut, Frank/0000-0003-3338-2247; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Chmeissani, Mokhtar/0000-0002-2287-4791; Arce, Pedro/0000-0003-3009-0484; Kamyshkov, Yuri/0000-0002-3789-7152; Longo, Egidio/0000-0001-6238-6787; Tsaregorodtsev, Andrei/0000-0003-4618-520X; Leijtens, Xaveer/0000-0001-7794-8236; Ludovici, Lucio/0000-0003-1970-9960; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ferguson, Thomas/0000-0001-5822-3731; Berdugo, Javier/0000-0002-7911-8532 NR 29 TC 20 Z9 20 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 27 PY 1992 VL 288 IS 3-4 BP 412 EP 420 DI 10.1016/0370-2693(92)91121-O PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JL452 UT WOS:A1992JL45200026 ER PT J AU GOSZTOLA, D WASIELEWSKI, MR AF GOSZTOLA, D WASIELEWSKI, MR TI CHEMWINDOW - VERSION-2.0.1 SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Software Review RP GOSZTOLA, D (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 26 PY 1992 VL 114 IS 18 BP 7327 EP 7328 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA JL072 UT WOS:A1992JL07200075 ER PT J AU MELENDRES, CA PANKUCH, M AF MELENDRES, CA PANKUCH, M TI ON THE COMPOSITION OF THE PASSIVE FILM ON NICKEL - A SURFACE-ENHANCED RAMAN SPECTROELECTROCHEMICAL STUDY SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article ID ANODIC OXIDE-FILMS; ALKALINE-SOLUTION; SODIUM-HYDROXIDE; SULFURIC-ACID; SPECTROSCOPY; ELECTRODES; IRON; REFLECTANCE; SCATTERING; NI AB The composition of the surface film on nickel in the passive potential region has been determined using the technique of surface-enhanced Raman spectroscopy with electrodeposited silver. Both Ni(OH)2 and NiO were found to be present. The formation of these species is correlated for the first time with the two anodic waves in the voltammogram of nickel in all the solutions studied from pH 2.7 to 12. Ni(OH)2 is formed first, and then NiO at a more anodic potential. A duplex-type film consisting of an inner NiO layer and an outer Ni(OH)2 layer appears to be the most consistent model for the passive film on nickel. C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. RP MELENDRES, CA (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 26 TC 58 Z9 58 U1 4 U2 21 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD AUG 25 PY 1992 VL 333 IS 1-2 BP 103 EP 113 DI 10.1016/0022-0728(92)80384-G PG 11 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA JL286 UT WOS:A1992JL28600008 ER PT J AU MOUNT, SM BURKS, C HERTZ, G STORMO, GD WHITE, O FIELDS, C AF MOUNT, SM BURKS, C HERTZ, G STORMO, GD WHITE, O FIELDS, C TI SPLICING SIGNALS IN DROSOPHILA - INTRON SIZE, INFORMATION-CONTENT, AND CONSENSUS SEQUENCES SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PRE-MESSENGER-RNA; SECONDARY STRUCTURE; BINDING-SITES; DNA-SEQUENCES; C-ELEGANS; U2 SNRNP; GENE; MELANOGASTER; RECOGNITION; TRANSCRIPTS AB A database of 209 Drosophila introns was extracted from Genbank (release number 64.0) and examined by a number of methods in order to characterize features that might serve as signals for messenger RNA splicing A tight distribution of sizes was observed: while the smallest introns in the database are 51 nucleotides more than half are less than 80 nucleotides in length and most of these have lengths in the range of 59 - 67 nucleotides. Drosophila splice sites found in large and small introns differ in only minor ways from each other and from those found in vertebrate introns. However, larger introns have greater pyrimidine-richness in the region between 11 and 21 nucleotides upstream of 3' splice sites. The Drosophila branchpoint consensus matrix resembles C T A A T (in which branch formation occurs at the underlined A), and differs from the corresponding mammalian signal in the absence of G at the position immediately preceding the branchpoint The distribution of occurrences of this sequence suggests a minimum distance between 5' splice sites and branchpoints of about 38 nucleotides, and a minimum distance between 3' splice sites and branchpoints of 15 nucleotides. The methods we have used detect no information in exon sequences other than in the few nucleotides immediately adjacent to the splice sites. However, Drosophila resembles many other species in that there is a discontinuity in A + T content between exons and introns, which are A + T rich. C1 LOS ALAMOS NATL LAB, THEORET BIOL & BIOPHYS GRP, LOS ALAMOS, NM 87545 USA. UNIV COLORADO, DEPT MOLEC CELLULAR & DEV BIOL, BOULDER, CO 80309 USA. NEW MEXICO STATE UNIV, COMP RES LAB, LAS CRUCES, NM 88003 USA. RP MOUNT, SM (reprint author), COLUMBIA UNIV, DEPT BIOL SCI, NEW YORK, NY 10027 USA. RI Stormo, Gary/C-5367-2013; OI Stormo, Gary/0000-0001-6896-1850; Fields, Chris/0000-0002-4812-0744 FU NHGRI NIH HHS [HG 00249]; NIGMS NIH HHS [GM 28755, GM 37991] NR 54 TC 342 Z9 345 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 EI 1362-4962 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD AUG 25 PY 1992 VL 20 IS 16 BP 4255 EP 4262 DI 10.1093/nar/20.16.4255 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA JL464 UT WOS:A1992JL46400019 PM 1508718 ER PT J AU HORWITZ, EP DIETZ, ML CHIARIZIA, R DIAMOND, H ESSLING, AM GRACZYK, D AF HORWITZ, EP DIETZ, ML CHIARIZIA, R DIAMOND, H ESSLING, AM GRACZYK, D TI SEPARATION AND PRECONCENTRATION OF URANIUM FROM ACIDIC MEDIA BY EXTRACTION CHROMATOGRAPHY SO ANALYTICA CHIMICA ACTA LA English DT Article DE CHROMATOGRAPHY; ACIDIC MEDIA; URANIUM ID PHASE PARTITION CHROMATOGRAPHY; ATOMIC EMISSION-SPECTROMETRY; SOLVENT-EXTRACTION; NUCLEAR; ELEMENTS; SAMPLES AB A novel extraction chromatographic resin comprised of diamyl amylphosphonate sorbed on an inert polymeric support (Amberlite XAD-7) for the separation and preconcentration of uranium from nitric and hydrochloric acid solutions is described. Uranium sorption by the resin is shown to be most efficient at high (> 1 M) acid concentrations. Sorbed uranium can be readily eluted using dilute acid. The application of the material to the isolation of uranium from various environmental samples (e.g., groundwater and soil) is described. Uranium recoveries from these samples are shown to be consistently high (ca. 95%). C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ANALYT CHEM LAB,ARGONNE,IL 60439. RP HORWITZ, EP (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 32 TC 243 Z9 247 U1 5 U2 38 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD AUG 24 PY 1992 VL 266 IS 1 BP 25 EP 37 DI 10.1016/0003-2670(92)85276-C PG 13 WC Chemistry, Analytical SC Chemistry GA JJ881 UT WOS:A1992JJ88100003 ER PT J AU THANGARAI, N WESTMACOTT, KH DAHMEN, U AF THANGARAI, N WESTMACOTT, KH DAHMEN, U TI EPITAXIAL-GROWTH OF (001) AL ON (111) SI BY VAPOR-DEPOSITION SO APPLIED PHYSICS LETTERS LA English DT Article ID IONIZED-CLUSTER BEAM; INTERFACE; SI(111); SI(100) AB Heteroepitaxial growth of (001) Al thin films on Si (111) single crystal substrates by vapor deposition was studied by means of x-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy techniques. It was observed that the films deposited at room temperature exhibit random (111) texture, while the films deposited at 280-degrees-C show perfect epitaxial alignment of (001) Al planes with (111) Si planes. In the interface plane [110] close packed directions in both the film and the substrate are parallel and hence Al grows with three orientation variants in a unique mazed tricrystal arrangement. RP THANGARAI, N (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,NATL CTR ELECTRON MICROSCOPY,BERKELEY,CA 94720, USA. NR 15 TC 19 Z9 19 U1 3 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 24 PY 1992 VL 61 IS 8 BP 913 EP 915 DI 10.1063/1.107726 PG 3 WC Physics, Applied SC Physics GA JK481 UT WOS:A1992JK48100013 ER PT J AU HOLSTEIN, WL PARISI, LA FACE, DW WU, XD FOLTYN, SR MUENCHAUSEN, RE AF HOLSTEIN, WL PARISI, LA FACE, DW WU, XD FOLTYN, SR MUENCHAUSEN, RE TI SUPERCONDUCTING EPITAXIAL TL2BA2CACU2O8 FILMS ON SAPPHIRE WITH CERIUM OXIDE BUFFER LAYERS SO APPLIED PHYSICS LETTERS LA English DT Article ID YBA2CU3O7 THIN-FILMS; SURFACE-RESISTANCE; LAALO3 AB Epitaxial Tl2Ba2CaCu2O8 films were prepared on (1102BAR)Al2O3 with (100) CeO2 buffer layers. The Tl2Ba2CaCu2O8 was epitaxially oriented with its c axis perpendicular to the substrate surface and [100] Tl2Ba2CaCu2O8 aligned with [100] CeO2 and [2201BAR] Al2O3. The films exhibited T(c) of 97-98 K as measured both inductively and by ac magnetic susceptibility. Direct transport critical current density J(c) at 75 K was 2.8 X 10(5) A/cm2. C1 LOS ALAMOS NATL LAB,CTR EXPLORATORY RES & DEV,LOS ALAMOS,NM 87545. RP HOLSTEIN, WL (reprint author), DUPONT CO,CENT RES & DEV,POB 80304,WILMINGTON,DE 19880, USA. NR 17 TC 37 Z9 37 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 24 PY 1992 VL 61 IS 8 BP 982 EP 984 DI 10.1063/1.107722 PG 3 WC Physics, Applied SC Physics GA JK481 UT WOS:A1992JK48100036 ER PT J AU BUDHANI, RC ZHU, Y SUENAGA, M AF BUDHANI, RC ZHU, Y SUENAGA, M TI EFFECTS OF 300 MEV AU+24 ION IRRADIATION ON SUPERCONDUCTIVITY IN YBA2CU3O7 EPITAXIAL-FILMS SO APPLIED PHYSICS LETTERS LA English DT Article ID CU-O CRYSTALS; CRITICAL CURRENTS; DEFECTS; LINE AB We report the effects of 300 MeV gold ion irradiation on the transition temperature (T(c)) and critical current density (J(c)) of YBa2Cu3O7 epitaxial films. The radiation at a dose as low as 5.6 X 10(10) ions/cm2 decreases the zero field T(c) and J(c). However, the response of the mixed state in 1-8 T field remains relatively unchanged up to a dose of approximately 9 X 10(10) ions/cm2. We argue that the stiffness of the flux lines in a film geometry and the pinning sites distributed at a length scale much smaller than that of the ion-induced defects are responsible for this null result. RP BUDHANI, RC (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. NR 15 TC 29 Z9 29 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 24 PY 1992 VL 61 IS 8 BP 985 EP 987 DI 10.1063/1.108462 PG 3 WC Physics, Applied SC Physics GA JK481 UT WOS:A1992JK48100037 ER PT J AU GARVEY, GT AF GARVEY, GT TI RECENT DEVELOPMENTS IN NEUTRINO PHYSICS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT NUCLEAR PHYSICS CONF ON HADRONIC STRUCTURE AND ELECTROWEAK INTERACTIONS CY AUG 05-10, 1991 CL AMSTERDAM, NETHERLANDS SP FDN PHYS NETHERLANDS ID BETA-DECAY; MOLECULAR TRITIUM; POLARIZED PROTONS; 17-KEV NEUTRINO; MASS; SPECTRUM; SCATTERING; EMISSION RP GARVEY, GT (reprint author), LOS ALAMOS NATL LAB,MP-4,MS H846,LOS ALAMOS,NM 87545, USA. NR 28 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 24 PY 1992 VL 546 IS 1-2 BP C369 EP C397 PG 29 WC Physics, Nuclear SC Physics GA JL504 UT WOS:A1992JL50400024 ER PT J AU GAILLARD, MK TAYLOR, TR AF GAILLARD, MK TAYLOR, TR TI AXION COUPLINGS AND EFFECTIVE CUTOFFS IN SUPERSTRING COMPACTIFICATIONS SO NUCLEAR PHYSICS B LA English DT Article ID EFFECTIVE FIELD-THEORIES; SUPERSYMMETRY BREAKING; ANTISYMMETRIC TENSOR; MODULAR INVARIANCE; TARGET SPACE; MODELS; SUPERGRAVITY; SYMMETRY; DUALITY; MATTER AB We use the linear supermultiplet formalism of supergravity to study axion couplings and chiral anomalies in the context of field-theoretical lagrangians describing orbifold compactifications beyond the classical approximation. By matching amplitudes computed in the effective low-energy theory with the results of string loop calculations we determine the appropriate counterterm in this effective theory that assures modular invariance to all loop order. We use supersymmetry consistency constraints to identify the correct ultraviolet cut-offs for the effective low-energy theory. Our results have a simple interpretation in terms of two-loop unification of gauge coupling constants at the string scale. C1 LAWRENCE BERKELEY LAB,DIV PHYS,BERKELEY,CA 94720. NORTHEASTERN UNIV,DEPT PHYS,BOSTON,MA 02115. RP GAILLARD, MK (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 36 TC 52 Z9 52 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 24 PY 1992 VL 381 IS 3 BP 577 EP 596 DI 10.1016/0550-3213(92)90491-S PG 20 WC Physics, Particles & Fields SC Physics GA JM977 UT WOS:A1992JM97700007 ER PT J AU ZHANG, JY CASTEN, RF CHOU, WT BRENNER, DS ZAMFIR, NV VONBRENTANO, P AF ZHANG, JY CASTEN, RF CHOU, WT BRENNER, DS ZAMFIR, NV VONBRENTANO, P TI IDENTICAL BANDS AND THE VARIETIES OF ROTATIONAL BEHAVIOR SO PHYSICAL REVIEW LETTERS LA English DT Article ID SUPERDEFORMED BANDS; NUCLEI AB It is shown that identical rotational energy spacings in pairs of even-even nuclei do not set these nuclei qualitatively apart from others. Rather, they represent the terminus or limiting case of a continuous range of spacings whose behavior is controlled by the balance between residual p-n and pairing interactions and whose phenomenology can be simply described. C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. INST MODERN PHYS,LANZHOU,PEOPLES R CHINA. INST ATOM PHYS,BUCHAREST,ROMANIA. CLARK UNIV,WORCESTER,MA 01610. UNIV COLOGNE,INST KERNPHYS,W-5000 COLOGNE 41,GERMANY. RP ZHANG, JY (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. RI Zamfir, Nicolae Victor/F-2544-2011 NR 12 TC 23 Z9 23 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 24 PY 1992 VL 69 IS 8 BP 1160 EP 1162 DI 10.1103/PhysRevLett.69.1160 PG 3 WC Physics, Multidisciplinary SC Physics GA JK426 UT WOS:A1992JK42600004 ER PT J AU GLENDINNING, SG WEBER, SV BELL, P DASILVA, LB DIXIT, SN HENESIAN, MA KANIA, DR KILKENNY, JD POWELL, HT WALLACE, RJ WEGNER, PJ KNAUER, JP VERDON, CP AF GLENDINNING, SG WEBER, SV BELL, P DASILVA, LB DIXIT, SN HENESIAN, MA KANIA, DR KILKENNY, JD POWELL, HT WALLACE, RJ WEGNER, PJ KNAUER, JP VERDON, CP TI LASER-DRIVEN PLANAR RAYLEIGH-TAYLOR INSTABILITY EXPERIMENTS SO PHYSICAL REVIEW LETTERS LA English DT Article ID PLASMA; FUSION; TARGET AB We have performed a series of experiments on the Nova Laser Facility to examine the hydrodynamic behavior of directly driven planar foils with initial perturbations of varying wavelength. The foils were accelerated with a single, frequency doubled, smoothed and temporally shaped laser beam at 0.8 x 10(14) W/cm2. The experiments are in good agreement with numerical simulations using the computer codes LASNEX and ORCHID which show growth rates reduced to about 70% of classical for this nonlinear regime. C1 UNIV ROCHESTER,LASER ENERGET LAB,ROCHESTER,NY 14623. RP GLENDINNING, SG (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 19 TC 67 Z9 69 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 24 PY 1992 VL 69 IS 8 BP 1201 EP 1204 DI 10.1103/PhysRevLett.69.1201 PG 4 WC Physics, Multidisciplinary SC Physics GA JK426 UT WOS:A1992JK42600015 ER PT J AU GARRETT, CW AF GARRETT, CW TI THE IMPLICATIONS OF FOSSIL-FUEL COMBUSTION ON GLOBAL CLIMATE CHANGE - AN OVERVIEW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 1 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201469 ER PT J AU DELEPLANQUE, MA AF DELEPLANQUE, MA TI SOME EXOTIC PROPERTIES OF NUCLEI AT HIGH SPINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 2 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300002 ER PT J AU WANG, P HILL, TG WARTCHOW, CA HUSTON, ME OEHLER, LM SMITH, MB BEDNARSKI, MD CALLSTROM, MR AF WANG, P HILL, TG WARTCHOW, CA HUSTON, ME OEHLER, LM SMITH, MB BEDNARSKI, MD CALLSTROM, MR TI THE SYNTHESIS AND CHARACTERIZATION OF NEW CARBOHYDRATE-BASED POLYMERS - NEW MATERIALS FOR THE STABILIZATION OF PROTEINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. OHIO STATE UNIV,DEPT CHEM,COLUMBUS,OH 43210. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 2 EP CARB PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200569 ER PT J AU LAGASSE, RR LESLIE, PK BERO, C PLAZEK, DJ AF LAGASSE, RR LESLIE, PK BERO, C PLAZEK, DJ TI TAILORING MICROCELLULAR POLYMERS DERIVED FROM GELLED SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV POLYMER PROC,ALBUQUERQUE,NM 87185. UNIV PITTSBURGH,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15261. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 3 EP MACR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301559 ER PT J AU WYSS, R AF WYSS, R TI SUPERDEFORMED NUCLEI AND THE IMPORTANCE OF QUADRUPOLE PAIRING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,JOINT INST HEAVY ION RES,OAK RIDGE,TN 37831. MSI,S-10405 STOCKHOLM,SWEDEN. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 3 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300003 ER PT J AU MCCARTHY, JL AF MCCARTHY, JL TI WHAT DO WHEAT, SOYBEANS, PINE TREES, DOGS, AND HUMANS HAVE IN COMMON - PAST EXPERIENCE AND FUTURE-PROSPECTS FOR INTEGRATING GENOMIC INFORMATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 4 EP CINF PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200988 ER PT J AU GILNA, P AF GILNA, P TI GENBANK AND ELECTRONIC DATA PUBLISHING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RI Gilna, Paul/I-3608-2016 OI Gilna, Paul/0000-0002-6542-0191 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 5 EP CINF PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200989 ER PT J AU PEKALA, RW ALVISO, CT KONG, FM AF PEKALA, RW ALVISO, CT KONG, FM TI ORGANIC AEROGELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 5 EP MACR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301561 ER PT J AU ATCHER, RW AF ATCHER, RW TI PRACTICAL AND THEORETICAL CONSIDERATIONS IN RADIONUCLIDE GENERATOR DEVELOPMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 6 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300006 ER PT J AU WILLIAMS, JM AF WILLIAMS, JM TI ADVANCES IN TECHNIQUES FOR MICROCELLULAR FOAM FORMATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 6 EP MACR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301562 ER PT J AU MAUSNER, LF AF MAUSNER, LF TI THE INVIVO GENERATOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 7 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300007 ER PT J AU DEC, JE ESPEY, C ZURLOYE, AO SIEBERS, DL AF DEC, JE ESPEY, C ZURLOYE, AO SIEBERS, DL TI SOOT AND FUEL DISTRIBUTION IMAGING IN A DIESEL-ENGINE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV 8362,LIVERMORE,CA 94551. PENN STATE UNIV,UNIV PK,PA 16802. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 8 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300573 ER PT J AU FRANZ, JA LINEHAN, JC AF FRANZ, JA LINEHAN, JC TI DETECTION OF ORGANIC SULFUR BY N-15 NMR VIA FORMATION OF IMINOSULFURANES 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 8 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201476 ER PT J AU CHASMAN, RR AF CHASMAN, RR TI EXTENDED NUCLEAR SHAPES IN THE HG MASS REGION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 10 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300010 ER PT J AU KIRTLEY, SM MULLINS, OC VANELP, J GEORGE, S CHEN, J CRAMER, SP AF KIRTLEY, SM MULLINS, OC VANELP, J GEORGE, S CHEN, J CRAMER, SP TI NITROGEN CHEMICAL-STRUCTURE IN PETROLEUM ASPHALTENES USING X-RAY ABSORPTION-SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SCHLUMBERGER DOLL RES CTR,RIDGEFIELD,CT 06877. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF DAVIS,DAVIS,CA 95616. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 10 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201478 ER PT J AU VANBERKEL, GJ RAMSEY, RS AF VANBERKEL, GJ RAMSEY, RS TI GEOPORPHYRIN ANALYSIS USING ELECTROSPRAY-IONIZATION MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 10 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201612 ER PT J AU HENRY, EA BECKER, JA KUHNERT, A BRINKMAN, MJ WANG, TF STOYER, MA YATES, SW DIAMOND, RM STEPHENS, FS DELEPLANQUE, MA MACCHIAVELLI, AO DRAPER, JP BURDE, J AZAIEZ, FA BEAUSANG, CW KELLY, W CIZEWSKI, JA AF HENRY, EA BECKER, JA KUHNERT, A BRINKMAN, MJ WANG, TF STOYER, MA YATES, SW DIAMOND, RM STEPHENS, FS DELEPLANQUE, MA MACCHIAVELLI, AO DRAPER, JP BURDE, J AZAIEZ, FA BEAUSANG, CW KELLY, W CIZEWSKI, JA TI SUPERDEFORMED AND OBLATE SHAPES IN LEAD NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08855. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 11 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300011 ER PT J AU ROSS, RH YOUNG, RA LU, PY AF ROSS, RH YOUNG, RA LU, PY TI USE OF TOXICITY EQUIVALENCE FACTORS IN ASSESSING THE HAZARD OF RELATED-COMPOUNDS IN OCCUPATIONAL SETTINGS AND AT SUPERFUND SITES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 11 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200793 ER PT J AU VAILLANCOURT, MB CHA, CY KIM, SS AF VAILLANCOURT, MB CHA, CY KIM, SS TI ELECTROMAGNETIC TECHNIQUE FOR SO2 AND NOX REMOVAL FROM COAL COMBUSTOR PRODUCT GAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CHA CORP,LARAMIE,WY 82070. UNIV WYOMING,LARAMIE,WY 82071. US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 11 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300576 ER PT J AU BAKTASH, C AF BAKTASH, C TI IDENTICAL MOMENTS OF INERTIA IN NEIGHBORING ODD-A AND EVEN-EVEN NUCLEI - A CRISIS FOR NUCLEAR PAIR CORRELATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 12 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300012 ER PT J AU ROSS, RH LU, PY HOVATTER, PS ETNIER, EL AF ROSS, RH LU, PY HOVATTER, PS ETNIER, EL TI TOXICITY ASSESSMENT AND ARAR DETERMINATION FOR SUPERFUND RISK ASSESSMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 12 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200794 ER PT J AU WEY, JE TORMA, AE AF WEY, JE TORMA, AE TI APPLICATION OF ELECTROCHEMICAL MEASUREMENT TECHNIQUES TO METAL SULFIDE OXIDATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EG&G IDAHO INC,INEL,IDAHO FALLS,ID 83415. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 14 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201616 ER PT J AU MACKLIS, RM ATCHER, R MORRIS, C BERESFORD, B HAFELI, U HUMM, J AF MACKLIS, RM ATCHER, R MORRIS, C BERESFORD, B HAFELI, U HUMM, J TI CONTROLLED RELEASE BIODEGRADABLE RADIOPOLYMERS FOR INTRACAVITARY RADIOTHERAPY USING A PB-212 ALPHA EMITTING GENERATOR SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 HARVARD UNIV,SCH MED,DEPT RADIAT ONCOL,BOSTON,MA 02115. ARGONNE NATL LAB,ARGONNE,IL 60439. RI Hafeli, Urs/B-4097-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 15 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300015 ER PT J AU RUETHER, JA SMITH, DN RAO, SN AF RUETHER, JA SMITH, DN RAO, SN TI GREENHOUSE GAS EMISSIONS FROM FOSSIL-FUEL USE AND TECHNICAL APPROACHES TO THEIR CONTROL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 15 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201481 ER PT J AU BRAY, LA WHEELWRIGHT, EJ WESTER, DW CARSON, KJ ELOVICH, RJ SHADE, EH ALEXANDER, DL CULLEY, GE ATKIN, SD AF BRAY, LA WHEELWRIGHT, EJ WESTER, DW CARSON, KJ ELOVICH, RJ SHADE, EH ALEXANDER, DL CULLEY, GE ATKIN, SD TI PRODUCTION OF Y-90 AT HANFORD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 17 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300017 ER PT J AU DIETZ, ML HORWITZ, EP AF DIETZ, ML HORWITZ, EP TI IMPROVED CHEMISTRY FOR THE PRODUCTION OF Y-90 FOR MEDICAL APPLICATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 18 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300018 ER PT J AU ALLENDORF, SW KRAUSE, JL CONAWAY, WE AF ALLENDORF, SW KRAUSE, JL CONAWAY, WE TI COHERENT CONTROL OF MOLECULAR REACTION DYNAMICS - PHASE-CONTROLLED PHOTODISSOCIATION OF HOD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 20 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300689 ER PT J AU MIRZADEH, S RICE, DE CALLAHAN, AP KNAPP, FF AF MIRZADEH, S RICE, DE CALLAHAN, AP KNAPP, FF TI EXTRACTION-BASED OS-194/IR-194 GENERATOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,NUCL MED GRP,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 20 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300020 ER PT J AU VOTER, AF AF VOTER, AF TI ATOMISTIC SIMULATION OF SURFACE-DIFFUSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 21 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201061 ER PT J AU FOILES, SM AF FOILES, SM TI STRUCTURE AND DIFFUSION OF METAL-SURFACES CALCULATED BY THE EMBEDDED ATOM METHOD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 22 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201062 ER PT J AU ECKELMEYER, KH AF ECKELMEYER, KH TI SCIENTISTS AND ENGINEERS ENRICHING K-12 SCIENCE-EDUCATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 23 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201755 ER PT J AU HAGAMAN, EW LEE, SK AF HAGAMAN, EW LEE, SK TI SELECTIVE FLUORINATION OF COALS - STRUCTURE AT REACTIVE SITES BY HIGH-RESOLUTION TRIPLE RESONANCE SOLID-STATE NMR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 24 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201490 ER PT J AU TURNER, J CHUN, H GALLION, S WEINER, P NICHOLAS, J AF TURNER, J CHUN, H GALLION, S WEINER, P NICHOLAS, J TI APPLICATION OF INNOVATIVE MULTIBODY METHODS TO MOLECULAR-DYNAMICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MOLDYN INC, CAMBRIDGE, MA 02138 USA. AMBER SYST INC, SOMERVILLE, MA 02143 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. Scripps Res Inst, RES INST, LA JOLLA, CA 92037 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 25 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201248 ER PT J AU LISIC, EC CALLAHAN, AP MIRZADEH, S KNAPP, FF AF LISIC, EC CALLAHAN, AP MIRZADEH, S KNAPP, FF TI A NEW TANDEM GENERATOR ION-EXCHANGE SYSTEM PROVIDING CARRIER-FREE RHENIUM-188-PERRHENIC ACID SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 TENNESSEE TECHNOL UNIV,DEPT CHEM,COOKEVILLE,TN 38505. OAK RIDGE NATL LAB,NUCL MED GRP,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 28 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300028 ER PT J AU UNEROZBAY, D GERSTEIN, BC KING, TS AF UNEROZBAY, D GERSTEIN, BC KING, TS TI INTERACTION OF HYDROGEN WITH ALKALI PROMOTED RU/SIO2 SURFACES - A PROTON NMR-STUDY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM ENGN,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 28 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201068 ER PT J AU CALLAHAN, AP MIRZADEH, S KNAPP, FF AF CALLAHAN, AP MIRZADEH, S KNAPP, FF TI LARGE-SCALE PRODUCTION OF TUNGSTEN-188 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,NUCL MED GRP,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 30 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300030 ER PT J AU SEABORG, GT AF SEABORG, GT TI AN OVERVIEW OF THE TEACHING OF NUCLEAR CHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 31 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300031 ER PT J AU FISHER, ER HO, P BUSS, RJ AF FISHER, ER HO, P BUSS, RJ TI LASER STUDIES OF THE REACTIVITY OF MAIN GROUP HYDRIDES WITH THE SURFACE OF DEPOSITING FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 34 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300703 ER PT J AU STEPHENS, RE AF STEPHENS, RE TI DEPARTMENT OF ENERGY SCIENCE-EDUCATION PROGRAMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,OFF ENERGY RES,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 35 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300035 ER PT J AU DICERBO, JC AF DICERBO, JC TI ARARS-ASSIST COMPUTER-SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 37 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200818 ER PT J AU GLENDENIN, LE AF GLENDENIN, LE TI THE EARLY YEARS WITH STEINBERG,ELLIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 37 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300037 ER PT J AU WILKINS, BD AF WILKINS, BD TI THE SCISSION-POINT MODEL OF FISSION REVISITED SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 38 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300038 ER PT J AU HOFFMAN, DC AF HOFFMAN, DC TI SPONTANEOUS FISSION PROPERTIES OF THE TRANSBERKELIUM ISOTOPES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 39 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300039 ER PT J AU CATON, GM HAAS, RT HAUFE, JC FRANCIS, MW LU, PY AF CATON, GM HAAS, RT HAUFE, JC FRANCIS, MW LU, PY TI PC-BASED EXPERT SYSTEM FOR INTEGRATED ASSESSMENT OF ENVIRONMENTAL COMPLIANCE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 40 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200821 ER PT J AU DENG, YP WU, GG MOYER, BA IZATT, RM AF DENG, YP WU, GG MOYER, BA IZATT, RM TI COMPLEXATION OF CYCLOHEXANO-15-CROWN-5 WITH TRANSITION-METAL IONS - A THERMODYNAMIC APPROACH SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. BRIGHAM YOUNG UNIV,DEPT CHEM,PROVO,UT 84604. 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 40 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201891 ER PT J AU FEIBELMAN, PJ AF FEIBELMAN, PJ TI ATOMIC SIZE EFFECTS IN ADSORBATE ENERGETICS ON METAL CRYSTALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 40 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201080 ER PT J AU LOFFREDO, DM LIU, AD TRIFUNAC, AD AF LOFFREDO, DM LIU, AD TRIFUNAC, AD TI PHOTOIONIZATION AND ENSUING ION-MOLECULE REACTIONS OF POLYCYCLIC AROMATIC-HYDROCARBONS IN ALKANE AND ALCOHOL-SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract RP LOFFREDO, DM (reprint author), ARGONNE NATL 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 40 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300166 ER PT J AU KAUFMAN, SB AF KAUFMAN, SB TI DEEP INELASTIC MUON SCATTERING FROM NUCLEI AT FERMILAB SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 42 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300042 ER PT J AU KOSZYKOWSKI, ML ARMSTRONG, R CLINE, RE MACFARLANE, J CHEN, JY BROWN, N AF KOSZYKOWSKI, ML ARMSTRONG, R CLINE, RE MACFARLANE, J CHEN, JY BROWN, N TI THE ADVANCED COMBUSTION MODELING ENVIRONMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,LIVERMORE,CA 94550. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 45 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201268 ER PT J AU HASAN, A SRIVASTAVA, PC MILLS, DCB AF HASAN, A SRIVASTAVA, PC MILLS, DCB TI SYNTHESIS OF 2-SUBSTITUTED THIOADENOSINE NUCLEOSIDES AND NUCLEOTIDES FOR PLATELET ADP-RECEPTOR STUDIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. TEMPLE UNIV,PHILADELPHIA,PA 19140. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 46 EP MEDI PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202404 ER PT J AU PHILLIPS, DR HAMILTON, VT TAYLOR, MD OTT, KC GRITZO, RE EMRAN, AM ROWE, RW PATTEL, D AF PHILLIPS, DR HAMILTON, VT TAYLOR, MD OTT, KC GRITZO, RE EMRAN, AM ROWE, RW PATTEL, D TI GENERATOR-PRODUCED AS-72 IN POSITRON EMISSION TOMOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,HOUSTON,TX 77030. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 46 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300046 ER PT J AU SHELNUTT, JA AF SHELNUTT, JA TI NONPLANAR METAL PORPHYRINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DEPT FUEL SCI 6211,ALBUQUERQUE,NM 87185. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 46 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201647 ER PT J AU MCILWAIN, ME TORMA, AE AF MCILWAIN, ME TORMA, AE TI MICROBIAL PROCESSES INVOLVED IN SULFIDE MINERAL LEACHING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 50 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201651 ER PT J AU SAULT, AG BOESPFLUG, EP AF SAULT, AG BOESPFLUG, EP TI ULTRA-HIGH VACUUM SURFACE CHARACTERIZATION OF ACTIVATED HYDROUS TITANIUM-OXIDE SUPPORTED NICKEL-CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV 6211,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 50 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201090 ER PT J AU SORRELL, C VOLINTINE, B AF SORRELL, C VOLINTINE, B TI THE ADVANCED INDUSTRIAL MATERIALS (AIM) PROGRAM OF THE UNITED-STATES DEPARTMENT OF ENERGY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,DIV ADV IND CONCEPTS,OFF IND TECHNOL,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 50 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200725 ER PT J AU CASTRO, A FAIRFIELD, F SHERA, B AF CASTRO, A FAIRFIELD, F SHERA, B TI DETECTION OF SINGLE DNA-MOLECULES IN A SHEATH FLOW CUVETTE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 51 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200450 ER PT J AU SOBCZYNSKI, SF AF SOBCZYNSKI, SF TI ENERGY-CONSERVATION RESEARCH-AND-DEVELOPMENT FOR THE PULP AND PAPER-INDUSTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,DIV IMPROVED ENERGY PROD,OFF IND TECHNOL,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 51 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200726 ER PT J AU FERRELL, J AF FERRELL, J TI THE GROWTH AND PRODUCTION OF BIOMASS AND THE INTERFACE WITH CONVERSION TECHNOLOGY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. US DOE,DIV BIOFUELS SYST,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 52 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200727 ER PT J AU CHUM, HL OVEREND, RP AF CHUM, HL OVEREND, RP TI THERMAL AND CHEMICAL CONVERSION OF BIOMASS AND WASTES TO FUELS, CHEMICALS, MATERIALS, AND ELECTRIC-POWER AT NREL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 53 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200728 ER PT J AU BORON, DJ AF BORON, DJ TI THE BIOLOGICAL AND CHEMICAL TECHNOLOGIES RESEARCH (BCTR) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 54 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200729 ER PT J AU UNKEFER, CJ AF UNKEFER, CJ TI C-13 NMR METABOLIC STUDIES ON METHYLOTROPHIC BACTERIA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,BIOCHEM & SPECT GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 54 EP CARB PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200621 ER PT J AU SALMONCOX, PH AF SALMONCOX, PH TI INDUSTRY UNIVERSITY GOVERNMENT PROGRAMS AT THE DEPARTMENT OF ENERGY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 58 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300623 ER PT J AU SPARKS, LD SHELNUTT, JA SCHEIDT, WR AF SPARKS, LD SHELNUTT, JA SCHEIDT, WR TI THE EFFECTS OF PI-PI INTERACTIONS ON MOLECULAR-STRUCTURE AND RESONANCE RAMAN-SPECTRA OF CRYSTALLINE COPPER(II) OCTAETHYLPORPHYRIN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DEPT FUEL SCI 6211,ALBUQUERQUE,NM 87185. UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. UNIV NOTRE DAME,DEPT CHEM & BIOCHEM,NOTRE DAME,IN 46556. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 58 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201659 ER PT J AU HOUSTON, JE AF HOUSTON, JE TI MOLECULAR-LEVEL STUDIES OF THE ADHESION AND MECHANICAL RELAXATION PROPERTIES OF SELF-ASSEMBLED ORGANIC MONOLAYERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 59 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201099 ER PT J AU WATKINS, BE TAYLOR, RT DROEGE, MW SATCHER, JH REIBOLD, RA WEAKELEY, TJR AF WATKINS, BE TAYLOR, RT DROEGE, MW SATCHER, JH REIBOLD, RA WEAKELEY, TJR TI BIOMIMETIC CATALYSTS - APPLICATION OF COPPER COORDINATION-COMPLEXES CONTAINING AN ASYMMETRIC COORDINATING LIGAND SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 59 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201524 ER PT J AU CHUM, HL BOZELL, J POWER, AJ AF CHUM, HL BOZELL, J POWER, AJ TI CHEMICALS FROM RENEWABLE FEEDSTOCKS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. AJ POWER & ASSOCIATES, BOULDER, CO 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 60 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200735 ER PT J AU HOBBS, JD MAJUMDER, SA QUIRKE, JME SHELNUTT, JA AF HOBBS, JD MAJUMDER, SA QUIRKE, JME SHELNUTT, JA TI STRUCTURAL INVESTIGATION OF NICKEL(II) OCTAETHYL-MESO-NITRO-PORPHYRINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DEPT FUEL SCI 6211,ALBUQUERQUE,NM 87185. UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. FLORIDA INT UNIV,DEPT CHEM,MIAMI,FL 33199. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 61 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201662 ER PT J AU BELL, AT AF BELL, AT TI RELATIONSHIPS BETWEEN THE STRUCTURE AND PERFORMANCE OF HETEROGENEOUS CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 63 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201103 ER PT J AU BOZELL, JJ CHUM, HL DIMMEL, DR POWER, AJ AF BOZELL, JJ CHUM, HL DIMMEL, DR POWER, AJ TI PULPING CATALYSTS FROM LIGNINS - AN ECONOMIC-ASSESSMENT OF A TECHNICAL APPROACH SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO. INST PAPER SCI & TECHNOL,ATLANTA,GA. AJ POWER & ASSOCIATES,BOULDER,CO. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 65 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200740 ER PT J AU JACOBSON, SC GOLSHANSHIRAZI, S GUIOCHON, G AF JACOBSON, SC GOLSHANSHIRAZI, S GUIOCHON, G TI RETENTION MECHANISMS OF ENANTIOMERS ON IMMOBILIZED PROTEINS AND EQUILIBRIUM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 69 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200468 ER PT J AU GILBERT, RO SIMPSON, JC AF GILBERT, RO SIMPSON, JC TI UNCERTAINTY ISSUES OF THE HANFORD ENVIRONMENTAL DOSE RECONSTRUCTION PROJECT 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 72 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201354 ER PT J AU SARANTITES, DG BARRETO, JL CHARITY, RJ NICOLIS, NA SOBOTKA, LG STRACENER, DW HENSLEY, DC BEENE, JR HALBERT, ML BAKTASH, C AF SARANTITES, DG BARRETO, JL CHARITY, RJ NICOLIS, NA SOBOTKA, LG STRACENER, DW HENSLEY, DC BEENE, JR HALBERT, ML BAKTASH, C TI ENTRANCE CHANNEL EFFECTS IN FUSION REACTIONS NEAR THE BARRIER - REACTION DYNAMICS OR NUCLEAR-STRUCTURE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WASHINGTON UNIV,DEPT CHEM,ST LOUIS,MO 63130. OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 73 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300073 ER PT J AU LEE, IY AF LEE, IY TI CORRELATION STUDIES OF CONTINUUM GAMMA-RAYS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 74 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300074 ER PT J AU HOFF, RW SOOD, PC SHELINE, RK AF HOFF, RW SOOD, PC SHELINE, RK TI MATRIX-ELEMENTS FOR THE RESIDUAL N-P INTERACTION IN DEFORMED ODD-ODD NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 FLORIDA STATE UNIV,TALLAHASSEE,FL 32306. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 75 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300075 ER PT J AU FORNAL, B BEARDEN, IG BRODA, R GRABOWSKI, ZW MAYER, RH NISIUS, D DALY, PJ CARPENTER, MP JANSSENS, RVJ KHOO, TL LAURITSEN, T LIANG, Y AF FORNAL, B BEARDEN, IG BRODA, R GRABOWSKI, ZW MAYER, RH NISIUS, D DALY, PJ CARPENTER, MP JANSSENS, RVJ KHOO, TL LAURITSEN, T LIANG, Y TI GAMMA-RAY SPECTROSCOPY OF MASSIVE TRANSFER PRODUCTS FROM HEAVY-ION REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PURDUE UNIV,W LAFAYETTE,IN 47907. ARGONNE NATL LAB,ARGONNE,IL 60439. RI Bearden, Ian/M-4504-2014; Carpenter, Michael/E-4287-2015 OI Bearden, Ian/0000-0003-2784-3094; Carpenter, Michael/0000-0002-3237-5734 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 77 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300077 ER PT J AU VANBERKEL, GJ MCLUCKEY, SA GLISH, GL AF VANBERKEL, GJ MCLUCKEY, SA GLISH, GL TI EXPANDING THE UNDERSTANDING AND UTILITY OF ELECTROSPRAY-IONIZATION MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 77 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200476 ER PT J AU OTTO, RJ NAPIER, B DEAN, L AF OTTO, RJ NAPIER, B DEAN, L TI TEACHING NUCLEAR-SCIENCE - LESSONS LEARNED BY LBL TEACHER RESEARCH ASSOCIATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MCCLYMONDS HIGH SCH,OAKLAND,CA 94607. LICK WILMERDING HIGH SCH,SAN FRANCISCO,CA 94112. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 80 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300080 ER PT J AU VAIRAVAMURTHY, A MANOWITZ, B JEON, Y AF VAIRAVAMURTHY, A MANOWITZ, B JEON, Y TI A STUDY OF SULFIDE OXIDATION AT SUB-MOLAR CONCENTRATIONS IN AQUEOUS-SOLUTION USING XANES SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,GEOSCI PROGRAM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 82 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201683 ER PT J AU FELCHER, GP GOYETTE, RJ ANASTASIADIS, S RUSSELL, TP FOSTER, M BATES, F AF FELCHER, GP GOYETTE, RJ ANASTASIADIS, S RUSSELL, TP FOSTER, M BATES, F TI FORWARD SCATTERING OF NEUTRONS FROM IMPERFECT MULTILAYERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. IBM ALMADEN,SAN JOSE,CA 95120. UNIV MINNESOTA,DEPT CHEM ENGN,MINNEAPOLIS,MN 55455. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 87 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301040 ER PT J AU JACKSON, KJ BURNHAM, AK BRAUN, RL KNAUSS, KG AF JACKSON, KJ BURNHAM, AK BRAUN, RL KNAUSS, KG TI MEASUREMENT OF PRESSURE EFFECTS ON N-HEXADECANE CRACKING RATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DEPT EARTH SCI,LIVERMORE,CA 94550. RI knauss, kevin/K-2827-2012; jackson, Kenneth/E-2236-2013 OI jackson, Kenneth/0000-0003-4231-3809 NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 87 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201551 ER PT J AU KNAUSS, KG COPENHAVER, SA BRAUN, RL BURNHAM, AK AF KNAUSS, KG COPENHAVER, SA BRAUN, RL BURNHAM, AK TI HYDROUS PYROLYSIS OF NEW-ALBANY AND PHOSPHORIA SHALES - EFFECTS OF TEMPERATURE AND PRESSURE ON THE KINETICS OF PRODUCTION OF CARBOXYLIC-ACIDS AND LIGHT-HYDROCARBONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DEPT EARTH SCI,LIVERMORE,CA 94550. RI knauss, kevin/K-2827-2012 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 88 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201552 ER PT J AU KARIM, A SINGH, N SIKKA, M BATES, FS DOZIER, W FELCHER, GP SATIJA, SK MAJKRZAK, CF AF KARIM, A SINGH, N SIKKA, M BATES, FS DOZIER, W FELCHER, GP SATIJA, SK MAJKRZAK, CF TI ORDERING IN POLYOLEFIN BLOCK COPOLYMER THIN-FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL INST STAND TECHNOL,GAITHERSBURG,MD 20899. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV MINNESOTA,DEPT CHEM ENGN,MINNEAPOLIS,MN 55455. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 92 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301045 ER PT J AU MCLUCKEY, SA VANBERKEL, GJ GLISH, GL RAMSEY, RS AF MCLUCKEY, SA VANBERKEL, GJ GLISH, GL RAMSEY, RS TI QUADRUPOLE ION TRAP ANALYSIS OF MULTIPLY CHARGED IONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 94 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200493 ER PT J AU ZHOU, PZ MARANO, JM LEE, SR AF ZHOU, PZ MARANO, JM LEE, SR TI STRATEGIC CONSIDERATIONS OF COAL-LIQUID REFINING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY RES CTR,PITTSBURGH,PA 15213. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 94 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201558 ER PT J AU LUANGDILOK, CH MEISEL, D AF LUANGDILOK, CH MEISEL, D TI PREPARATION AND PROPERTIES OF SURFACE MODIFIED SEMICONDUCTOR COLLOIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 95 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201134 ER PT J AU BELL, JT AF BELL, JT TI SEPARATIONS - THE PATH TO WASTE MINIMIZATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 96 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201822 ER PT J AU HOBBS, DT WALKER, DD AF HOBBS, DT WALKER, DD TI CHEMICAL PRETREATMENT OF SAVANNAH RIVER SITE NUCLEAR WASTE 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. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 97 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201823 ER PT J AU LITTLEJOHN, D CHANG, SG AF LITTLEJOHN, D CHANG, SG TI OXIDATIVE DESTRUCTION OF NITROGEN SULFONATES IN AQUEOUS-SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 97 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201379 ER PT J AU BENDIXSEN, CL AF BENDIXSEN, CL TI MANAGEMENT OF RADIOACTIVE LIQUID WASTE AT THE IDAHO-CHEMICAL-PROCESSING-PLANT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IDAHO NATL ENGN LAB,WINCO,IDAHO FALLS,ID 83403. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 98 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201824 ER PT J AU DAVIDS, CN AF DAVIDS, CN TI EXPERIMENTS AT THE FRAGMENT MASS ANALYZER AT ATLAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 101 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300101 ER PT J AU REVIOL, W GARG, U DAVIS, BF APRAHAMIAN, A NAGULESWARAN, S WALPE, JC YE, D LAURITSEN, T LIANG, Y AF REVIOL, W GARG, U DAVIS, BF APRAHAMIAN, A NAGULESWARAN, S WALPE, JC YE, D LAURITSEN, T LIANG, Y TI SPECTROSCOPY OF RU-96 AND RU-98 - STRUCTURES OF VARIED CHARACTER AT N-GREATER-THAN-OR-EQUAL-TO-52 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV NOTRE DAME,NOTRE DAME,IN 46556. ARGONNE NATL LAB,ARGONNE,IL 60439. RI Naguleswaran, Sanjeev/A-4305-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 103 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300103 ER PT J AU JENNE, EA EARY, LE SCHRAMKE, JA AF JENNE, EA EARY, LE SCHRAMKE, JA TI GEOCHEMICAL CONSIDERATIONS IN PLUGGING UNDERGROUND SULFIDE MINE 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 105 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201705 ER PT J AU MITCHELL, S LAFFERTY, CJ GARCIA, R SNAPE, CE BUCHANAN, AC BRITT, PF KLAVETTER, E AF MITCHELL, S LAFFERTY, CJ GARCIA, R SNAPE, CE BUCHANAN, AC BRITT, PF KLAVETTER, E TI PYROLYSIS AND HYDROPYROLYSIS OF DIPHENYLALKANES AND SULFUR-COMPOUNDS IMMOBILIZED ON SILICA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,GLASGOW G1 1XL,SCOTLAND. OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. RI Garcia, Roberto/J-6919-2014 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 106 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201570 ER PT J AU STRACHAN, DM ALLEMANN, RT PEDERSON, LR BRYAN, SA BURKE, TM JOHNSON, GD ASHBY, EC MEISEL, D AF STRACHAN, DM ALLEMANN, RT PEDERSON, LR BRYAN, SA BURKE, TM JOHNSON, GD ASHBY, EC MEISEL, D TI THE CHEMICAL AND PHYSICAL-MECHANISMS FOR GAS GENERATION, RETENTION, AND RELEASE FROM TANK 241-SY-101 - IMPLICATIONS FOR MITIGATION AND REMEDIATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. GEORGIA INST TECHNOL, ATLANTA, GA 30332 USA. ARGONNE NATL 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 107 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201832 ER PT J AU HORWITZ, EP DIETZ, ML ROGERS, RD AF HORWITZ, EP DIETZ, ML ROGERS, RD TI A COMBINED TRANSURANIC-STRONTIUM EXTRACTION RECOVERY PROCESS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NO ILLINOIS UNIV,DEPT CHEM,DE KALB,IL 60115. ARGONNE NATL LAB,ARGONNE,IL 60439. RI Rogers, Robin/C-8265-2013 OI Rogers, Robin/0000-0001-9843-7494 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 108 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201833 ER PT J AU LUMETTA, GJ SWANSON, JL BARKER, SA AF LUMETTA, GJ SWANSON, JL BARKER, SA TI PROCESS CHEMISTRY FOR THE PRETREATMENT OF HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 109 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201834 ER PT J AU DOSCH, RG ANTHONY, RG BROWN, NE SPRUNG, JL STEPHENS, HP AF DOSCH, RG ANTHONY, RG BROWN, NE SPRUNG, JL STEPHENS, HP TI ADVANCED FORMS OF TITANATE ION-EXCHANGERS FOR CHEMICAL PRETREATMENT OF NUCLEAR WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. TEXAS A&M UNIV SYST,DEPT CHEM ENGN,COLL STN,TX 77843. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 110 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201835 ER PT J AU RILEY, SJ AF RILEY, SJ TI CHEMICAL PROBES OF THE GEOMETRIC STRUCTURE OF TRANSITION-METAL CLUSTERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 110 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300779 ER PT J AU CAMPBELL, K AF CAMPBELL, K TI EXPLORATORY DATA-ANALYSIS AND MODELING OF A VAPOR-PHASE CONTAMINANT PLUME SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 111 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201393 ER PT J AU JOHNSON, TR LEWIS, MA NEWMAN, AE LAIDLER, JJ AF JOHNSON, TR LEWIS, MA NEWMAN, AE LAIDLER, JJ TI TREATMENT OF HIGH-LEVEL WASTES FROM THE IFR FUEL-CYCLE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 111 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201836 ER PT J AU JOHNSON, KM WILLS, KD BUTLER, DB JOHNSON, WK WONG, CS AF JOHNSON, KM WILLS, KD BUTLER, DB JOHNSON, WK WONG, CS TI THE PERFORMANCE OF AN AUTOMATED CONTINUOUS GAS EXTRACTOR AND COULOMETRIC DETECTOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. UNIV RHODE ISL, NARRAGANSETT, RI 02882 USA. FISHERIES & OCEANS CANADA INST OCEAN SCI, SIDNEY V8L 4B2, BC, CANADA. 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 23 PY 1992 VL 204 BP 113 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201713 ER PT J AU TOTH, KS AF TOTH, KS TI PROBING NUCLEI FAR FROM STABILITY BY MEANS OF RADIOACTIVE DECAY STUDIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 114 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300114 ER PT J AU GREENWOOD, RC HELMER, RG WATTS, KD WILLMES, H AF GREENWOOD, RC HELMER, RG WATTS, KD WILLMES, H TI STUDIES OF DECAY PROPERTIES OF FISSION-PRODUCT ISOTOPES USING THE INEL ISOL FACILITY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. UNIV IDAHO,MOSCOW,ID 83843. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 115 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300115 ER PT J AU CRAMER, SP CHEN, J GEORGE, S CHRISTIANSEN, J VANELP, J TITTSWORTH, R HALES, B SMITH, B COUCOUVANIS, D CAMPOBASSO, N BOLIN, J AF CRAMER, SP CHEN, J GEORGE, S CHRISTIANSEN, J VANELP, J TITTSWORTH, R HALES, B SMITH, B COUCOUVANIS, D CAMPOBASSO, N BOLIN, J TI X-RAY SPECTROSCOPY OF NITROGENASE FEMO PROTEIN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF DAVIS,DEPT APPL SCI,DAVIS,CA 95616. LAWRENCE BERKELEY LAB,DEPT E & ES,BERKELEY,CA 94720. LOUISIANA STATE UNIV,DEPT CHEM,BATON ROUGE,LA 70803. AFRC,SUSSEX,ENGLAND. UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109. PURDUE UNIV,DEPT BIOL SCI,W LAFAYETTE,IN 47907. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 116 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201967 ER PT J AU SABATANI, E RUBINSTEIN, I GOTTESFELD, S REDONDO, A RISHPON, J AF SABATANI, E RUBINSTEIN, I GOTTESFELD, S REDONDO, A RISHPON, J TI PROPERTIES OF POLYANILINE FILMS GROWN ELECTROCHEMICALLY ON ORGANIC MONOLAYERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WEIZMANN INST SCI,DEPT MAT & INTERFACES,IL-76100 REHOVOT,ISRAEL. TEL AVIV UNIV,DEPT BIOTECHNOL,IL-69978 TEL AVIV,ISRAEL. LOS ALAMOS NATL LAB,ELECTR RES GRP,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 116 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201155 ER PT J AU FRANK, P HEDMAN, B ELIEZER, D TSURUTA, H NEWTON, WE HODGSON, KO AF FRANK, P HEDMAN, B ELIEZER, D TSURUTA, H NEWTON, WE HODGSON, KO TI X-RAY SPECTROELECTROCHEMICAL AND SOLUTION SCATTERING STUDIES ON AV-1 FEMOCO SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305. STANFORD UNIV,DEPT APPL PHYS,STANFORD,CA 94305. VIRGINIA POLYTECH INST & STATE UNIV,DEPT BIOCHEM & NUTR,BLACKSBURG,VA 24061. STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94305. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 117 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201968 ER PT J AU REYNOLDS, JG TAYLOR, RW MORRIS, CJ AF REYNOLDS, JG TAYLOR, RW MORRIS, CJ TI CATALYTIC ACTIVITY OF COMBUSTED OIL-SHALE FOR REMOVAL OF NITROGEN-OXIDES IN GAS STREAMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 117 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201581 ER PT J AU FRANCIS, AJ DODGE, CJ GILLOW, JB NEILL, CC AF FRANCIS, AJ DODGE, CJ GILLOW, JB NEILL, CC TI MICROBIOLOGICAL AND PHOTOCHEMICAL TREATMENT OF RADIOACTIVE-WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 121 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201846 ER PT J AU HINKS, DG JORGENSEN, JD RADAELLI, P DABROWSKI, B HUNTER, B WAGNER, J AF HINKS, DG JORGENSEN, JD RADAELLI, P DABROWSKI, B HUNTER, B WAGNER, J TI STRUCTURE, DIMENSIONALITY AND SUPERCONDUCTIVITY IN OXIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439. RI Radaelli, Paolo/C-2952-2011 OI Radaelli, Paolo/0000-0002-6717-035X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 121 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201972 ER PT J AU NEU, MP HOFFMAN, DC NITSCHE, H SILVA, RJ AF NEU, MP HOFFMAN, DC NITSCHE, H SILVA, RJ TI PLUTONIUM SPECIATION IN NEAR NEUTRAL CARBONATE SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 121 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300121 ER PT J AU QUINN, KG SOUTH, DW KOSOBUD, RF AF QUINN, KG SOUTH, DW KOSOBUD, RF TI THE ROLE OF ENVIRONMENTAL COST INFORMATION IN A GREENHOUSE GAS TRADABLE EMISSION PERMIT SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,TECHNOL & ENVIRONM POLICY SECT,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 122 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201404 ER PT J AU MAHANAMA, KRR GUNDEL, LA DAISEY, JM AF MAHANAMA, KRR GUNDEL, LA DAISEY, JM TI SELECTIVE FLUORESCENCE DETECTION OF POLYCYCLIC AROMATIC-HYDROCARBONS IN ENVIRONMENTAL TOBACCO-SMOKE AND OTHER AIRBORNE PARTICLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 128 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200527 ER PT J AU VORRES, KS AF VORRES, KS TI EVOLUTION OF GAS FROM COAL IN SEALED GLASS AMPOULES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 128 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201592 ER PT J AU COSMAN, M DELOSSANTOS, C FIALA, R HINGERTY, B IBANEZ, V GEACINTOV, N BROYDE, S PATEL, D AF COSMAN, M DELOSSANTOS, C FIALA, R HINGERTY, B IBANEZ, V GEACINTOV, N BROYDE, S PATEL, D TI 2D-NMR STUDIES OF STEREOSPECIFIC BENZO[A]PYRENE DEOXYOLIGONUCLEOTIDE DUPLEX ADDUCTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 COLUMBIA UNIV,DEPT BIOCHEM & MOLEC BIOPHYS,NEW YORK,NY 10032. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NYU,DEPT CHEM,NEW YORK,NY 10003. NYU,DEPT BIOL,NEW YORK,NY 10003. RI Fiala, Radovan/D-8789-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 139 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200538 ER PT J AU SAPERS, SP HESS, WP AF SAPERS, SP HESS, WP TI PHOTODISSOCIATION OF BRCH2CH2OH AND ICH2CH2OH - FORMATION AND CHARACTERIZATION OF OH(X2-PI) 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 145 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300814 ER PT J AU SMALL, GJ JANKOWIAK, R AF SMALL, GJ JANKOWIAK, R TI PRINCIPLES AND TECHNICAL ASPECTS OF FLUORESCENCE AND OTHER LINE NARROWING SPECTROSCOPIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. NR 1 TC 0 Z9 0 U1 2 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 147 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200546 ER PT J AU JANKOWIAK, R MARSCH, GA SMALL, GJ AF JANKOWIAK, R MARSCH, GA SMALL, GJ TI APPLICATIONS OF LOW-TEMPERATURE LASER-INDUCED FLUORESCENCE SPECTROSCOPY TO CHEMICAL CARCINOGENESIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 148 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200547 ER PT J AU CORBETT, JD AF CORBETT, JD TI NEW CHEMISTRY IN METALLIC SYSTEMS - INTERSTITIALS, CLUSTERS AND ZINTL PHASES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 150 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202001 ER PT J AU BUCHANAN, M HETTICH, R NOURSE, B AF BUCHANAN, M HETTICH, R NOURSE, B TI CHARACTERIZATION OF DNA ADDUCTS WITH FOURIER-TRANSFORM MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RI Hettich, Robert/N-1458-2016 OI Hettich, Robert/0000-0001-7708-786X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 151 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200550 ER PT J AU TRULSON, MO FRIEDRICH, DM LAFEMINA, JP AF TRULSON, MO FRIEDRICH, DM LAFEMINA, JP TI CHARACTERIZATION OF PHOTOINDUCED CHARGE-TRANSFER DYNAMICS BY RESONANCE RAMAN-SPECTROSCOPY 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 154 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300823 ER PT J AU RICCO, AJ KEPLEY, LJ THOMAS, RC SUN, L CROOKS, RM AF RICCO, AJ KEPLEY, LJ THOMAS, RC SUN, L CROOKS, RM TI CHARACTERIZATION AND CHEMICAL SENSOR APPLICATIONS OF MONOLAYER FILMS USING SAW DEVICES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. RI Ricco, Antonio/A-5273-2010 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 160 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201199 ER PT J AU EDMONDS, CG GUPTA, R MCCLOSKEY, JA CRAIN, PF AF EDMONDS, CG GUPTA, R MCCLOSKEY, JA CRAIN, PF TI RNA MODIFICATION IN MICROORGANISMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV UTAH, DEPT MED CHEM, SALT LAKE CITY, UT 84112 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. SO ILLINOIS UNIV, SCH MED, DEPT MED BIOCHEM, CARBONDALE, IL 62901 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 167 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200566 ER PT J AU CHEN, MJ RATHKE, JW AF CHEN, MJ RATHKE, JW TI ACTIVATION OF HYDROCARBONS BY SOLUBLE RHODIUM PHTHALOCYANINE COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 170 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202021 ER PT J AU LAHANN, TR BAUER, WF LU, DR AF LAHANN, TR BAUER, WF LU, DR TI ENHANCED DELIVERY OF PARA-BORONOPHENYLALANINE BY 2-HYDROXYPROPYL-BETA-CYCLODEXTRIN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IDAHO STATE UNIV,POCATELLO,ID 83209. IDAHO NATL ENGN LAB,IDAHO FALLS,ID. RI Bauer, William/B-8357-2016 OI Bauer, William/0000-0002-7190-9700 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 170 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301370 ER PT J AU DEINHAMMER, RS PORTER, MD BRAYMEN, SD SHIMAZU, K AF DEINHAMMER, RS PORTER, MD BRAYMEN, SD SHIMAZU, K TI ION CHROMATOGRAPHIC SEPARATIONS USING STEP AND LINEAR VOLTAGE WAVE-FORMS AT CHARGE-CONTROLLABLE POLYMERIC AND MONOLAYER STATIONARY PHASES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 HOKKAIDO UNIV,DEPT CHEM,SAPPORO,HOKKAIDO 060,JAPAN. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,MICROELECTR RES CTR,AMES,IA 50011. RI Shimazu, Katsuaki/D-4282-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 179 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31201218 ER PT J AU SCHENTER, GK AF SCHENTER, GK TI DYNAMIC SOLVENT EFFECTS ON ACTIVATED CHEMICAL-REACTIONS - EFFECTS OF REACTION-PATH CURVATURE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 181 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300850 ER PT J AU TSAY, TJ HE, Y LIN, MC MELIUS, CF AF TSAY, TJ HE, Y LIN, MC MELIUS, CF TI BRANCHING UNIMOLECULAR DECOMPOSITION OF DIKETENE - COMPARISON OF THEORY AND EXPERIMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EMORY UNIV,DEPT CHEM,ATLANTA,GA 30322. SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 184 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300853 ER PT J AU CHOI, MG ANGELICI, RJ AF CHOI, MG ANGELICI, RJ TI BENZO[B]THIOPHENE (BT) COMPLEXES OF CP'(CO)2RE(BT) - MODELS FOR BT BINDING TO HDS CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 195 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202046 ER PT J AU MANG, JT RIEKER, TP LI, C PATEL, P SURENDRANATH, V KUMAR, S AF MANG, JT RIEKER, TP LI, C PATEL, P SURENDRANATH, V KUMAR, S TI CRITICAL-BEHAVIOR AT THE NEMATIC TO SMECTIC-A-PHASE TRANSITION IN A SIDE-CHAIN POLYMER LIQUID-CRYSTAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 KENT STATE UNIV,DEPT PHYS,KENT,OH 44242. KENT STATE UNIV,INST LIQUID CRYSTAL,KENT,OH 44242. LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 197 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301150 ER PT J AU KULKARNI, S KRAUSE, S WIGNALL, GD AF KULKARNI, S KRAUSE, S WIGNALL, GD TI SMALL-ANGLE NEUTRON-SCATTERING FROM SYNTHETIC MEMBRANES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 RENSSELAER POLYTECH INST,DEPT CHEM,POLYMER SCI & ENGN PROGRAM,TROY,NY 12180. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 201 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301154 ER PT J AU NELSON, TO RISBERG, DL AF NELSON, TO RISBERG, DL TI KINETICS OF GASEOUS F-ATOM DONOR (F2, KRF2, AND O2F2) REACTIONS WITH DIFFERENT SOLIDS (SI, C, ETC) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 204 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300873 ER PT J AU BROWN, KW RAY, D AF BROWN, KW RAY, D TI STRUCTURAL PROBES OF SIZE-SELECTED CLUSTER IONS 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 216 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300885 ER PT J AU KNOCHENMUSS, RD RAY, D AF KNOCHENMUSS, RD RAY, D TI VIBRATIONS AND DYNAMICS OF HYDROGEN-BONDED CLUSTERS 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 223 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300892 ER PT J AU WOODWARD, J KORAN, LJ HERNANDEZ, LJ AF WOODWARD, J KORAN, LJ HERNANDEZ, LJ TI USE OF IMMOBILIZED BETA-GLUCOSIDASE IN THE HYDROLYSIS OF CELLULOSE 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. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 224 EP AGFD PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31200224 ER PT J AU BERNATIS, P MIEDANER, A DUBOIS, DL AF BERNATIS, P MIEDANER, A DUBOIS, DL TI SELECTIVE PALLADIUM PHOSPHINE CATALYSTS FOR THE ELECTROCHEMICAL REDUCTION OF CARBON-DIOXIDE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,DIV BASIC SCI,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 229 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202080 ER PT J AU ASTRUC, D BROWN, DS DELVILLEDESBOIS, MH VOLLHARDT, KPC AF ASTRUC, D BROWN, DS DELVILLEDESBOIS, MH VOLLHARDT, KPC TI SPECIFIC METAL RECOGNITION IN THE REDOX CHEMISTRY OF HETEROBIMETALLIC FULVALENE COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV BORDEAUX 1,CHIM ORGAN & ORGANOMET LAB,CNRS,URA 35,F-33405 TALENCE,FRANCE. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. RI DELVILLE, Marie-Helene/C-6040-2011 OI DELVILLE, Marie-Helene/0000-0001-8863-8225 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 232 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202083 ER PT J AU CRUMRINE, DS FRENCH, DC AF CRUMRINE, DS FRENCH, DC TI INTRAMOLECULAR EFG AT SULFUR IN BENZENESULFONATE FROM CONCENTRATION AND COUNTERION DEPENDENCE OF S-33 QUADRUPOLAR RELAXATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOYOLA UNIV,DEPT CHEM,CHICAGO,IL 60626. ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 232 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300358 ER PT J AU DANG, LX AF DANG, LX TI INTERACTIONS OF ION-PAIR IN WATER - A MOLECULAR-DYNAMICS STUDY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, MOLEC SCI RES CTR, 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 233 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300902 ER PT J AU HUO, PP CEBE, P AF HUO, PP CEBE, P TI REAL-TIME SAXS STUDIES OF POLY(BUTYLENE TEREPHTHALATE) POLY(ARYLATE) BLENDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139. BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 244 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31301440 ER PT J AU JELLINEK, J AF JELLINEK, J TI DYNAMICS OF CLUSTER-MOLECULE SYSTEMS - NI13 + D2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 263 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300932 ER PT J AU BAE, Y BEUHLER, RJ CHU, YY FRIEDLANDER, G FRIEDMAN, L AF BAE, Y BEUHLER, RJ CHU, YY FRIEDLANDER, G FRIEDMAN, L TI CLUSTER IMPACT - A CHEMICAL APPROACH TO FUSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 265 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300934 ER PT J AU MILLER, WH AF MILLER, WH TI DIRECT CALCULATION OF THE CUMULATIVE REACTION PROBABILITY (MICROCANONICAL REACTIVE FLUX) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT MED,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 267 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300936 ER PT J AU PULLIAM, CR PETERSON, EJ KUBATMARTIN, KA PETERSON, DE AF PULLIAM, CR PETERSON, EJ KUBATMARTIN, KA PETERSON, DE TI FORMATION OF THE BI/PB-2223 SUPERCONDUCTOR - THE ROLE OF CA2-XSRXPBO4 (X-LESS-THAN-OR-EQUAL-TO-2) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SYRACUSE UNIV,UTICA COLL,DEPT CHEM,SYRACUSE,NY 13244. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 1 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 268 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202119 ER PT J AU MORSS, LR AF MORSS, LR TI PHASE-RELATIONSHIPS IN OXIDES CALN(TI,ZR)2O7-X BY X-RAY AND NEUTRON POWDER DIFFRACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 269 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202120 ER PT J AU NOVOA, JJ ROVIRA, MC CONSTANS, P WHANGBO, MH WILLIAMS, JM AF NOVOA, JJ ROVIRA, MC CONSTANS, P WHANGBO, MH WILLIAMS, JM TI C(SP(N))-H...O INTERACTIONS (N=1, 2, 3) IN ORGANIC-CRYSTALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV BARCELONA,FAC QUIM,DEPT QUIM FIS,E-08028 BARCELONA,SPAIN. N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RI Novoa, Juan/B-3525-2013 OI Novoa, Juan/0000-0003-3577-1182 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 271 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202122 ER PT J AU RAY, D AF RAY, D TI REACTION DYNAMICS IN SIZE-SELECTED MOLECULAR CLUSTERS 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 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 276 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300945 ER PT J AU HOLIAN, BL AF HOLIAN, BL TI SIMULATING COMPLEX FLOWS USING MASSIVELY PARALLEL MOLECULAR-DYNAMICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 282 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300951 ER PT J AU CLOSE, MR MCCARLEY, RE AF CLOSE, MR MCCARLEY, RE TI SYNTHESIS, CHARACTERIZATION AND PROPERTIES OF A NEW HEXAGONAL BRONZE - (NH4)XWO3-Y(NH)Y SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 286 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202137 ER PT J AU WISHART, JF VANELDIK, R JI, S CHANG, S ISIED, SS AF WISHART, JF VANELDIK, R JI, S CHANG, S ISIED, SS TI HIGH-PRESSURE PULSE-RADIOLYSIS STUDY OF INTRAMOLECULAR AND INTERMOLECULAR REDUCTION OF CYTOCHROME-E BY RUTHENIUM(II) AMMINE COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RUTGERS STATE UNIV,DEPT CHEM,NEW BRUNSWICK,NJ 08903. UNIV WITTEN,INST INORGAN CHEM,W-5810 WITTEN,GERMANY. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 325 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202176 ER PT J AU MITCHELL, MA BENICEWICZ, BC AF MITCHELL, MA BENICEWICZ, BC TI SYNTHESIS OF 1,3-OXAZOLINES AND 1,3-OXAZINES UTILIZING POTASSIUM FLUORIDE ON ALUMINA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 326 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300452 ER PT J AU PENG, G CRAMER, SP WADE, CP HOINKIS, M TITTSWORTH, R HALES, BJ COUCOUVANIS, D AF PENG, G CRAMER, SP WADE, CP HOINKIS, M TITTSWORTH, R HALES, BJ COUCOUVANIS, D TI LOW-TEMPERATURE FT-IR STUDY OF INHIBITED NITROGENASE AND IRON MOLYBDENUM COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF DAVIS,DEPT APPL SCI,DAVIS,CA 95616. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. LOUISIANA STATE UNIV,DEPT CHEM,BATON ROUGE,LA 70803. UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109. IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 340 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202191 ER PT J AU GEORGE, SJ JIE, C VANELP, J CRAMER, SP CHEN, CT TITTSWORTH, RC HALES, BJ AF GEORGE, SJ JIE, C VANELP, J CRAMER, SP CHEN, CT TITTSWORTH, RC HALES, BJ TI IRON L-EDGE SPECTROSCOPY OF NITROGENASE AND RELATED IRON-SULFUR SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF DAVIS,DAVIS,CA 95616. AT&T BELL LABS,MURRAY HILL,NJ 07974. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 341 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202192 ER PT J AU CHEN, J GEORGE, SJ CRAMER, SP TITTSWORTH, R HALES, B AF CHEN, J GEORGE, SJ CRAMER, SP TITTSWORTH, R HALES, B TI EXAFS STUDIES OF A VINELANDII MOFE NITROGENASE AS A FUNCTION OF OXIDATION-STATE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF DAVIS,DAVIS,CA 95616. LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 342 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202193 ER PT J AU MCCARLEY, RE HOLLINGSHEAD, JA HILSENBECK, SJ ZHANG, X AF MCCARLEY, RE HOLLINGSHEAD, JA HILSENBECK, SJ ZHANG, X TI METAL CLUSTER COMPOUNDS AS PRECURSORS TO METAL-OXIDES AND SULFIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 369 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202220 ER PT J AU BUCHANAN, AC BRITT, PF AF BUCHANAN, AC BRITT, PF TI INFLUENCE OF HYDROGEN DONORS ON HIGH-TEMPERATURE, FREE-RADICAL CHAIN-REACTIONS ON SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 373 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300499 ER PT J AU BROWN, GM GARRITY, ML SACHLEBEN, RA SWORSKI, TJ AF BROWN, GM GARRITY, ML SACHLEBEN, RA SWORSKI, TJ TI REVERSIBLE ENERGY-TRANSFER BETWEEN NAPHTHALENE AND TERBIUM(III) IN COMPLEXES OF MULTIDENTATE CHELATING-AGENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 23 PY 1992 VL 204 BP 411 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ312 UT WOS:A1992JJ31202262 ER PT J AU BOZLEE, B LIAN, B KAHN, J GARRELL, RL HERNE, T LEIDEN, A PALKO, P HESS, N EXARHOS, G AF BOZLEE, B LIAN, B KAHN, J GARRELL, RL HERNE, T LEIDEN, A PALKO, P HESS, N EXARHOS, G TI CHARACTERIZATION OF ALKALI-METAL SOLS IN DIETHYL-ETHER - VISIBLE EXTINCTION AND SURFACE-ENHANCED RAMAN-SPECTRA SO CHEMICAL PHYSICS LETTERS LA English DT Article ID SCATTERING SERS; SPECTROSCOPY; ABSORPTION; PARTICLES; CLUSTERS; SODIUM; AG; NA AB Colloidal suspensions of Na, K, Rb, and Cs have been prepared in diethyl ether. The visible extinction spectra of each are compared with results of theoretical Mie-scattering spectra, calculated using a variety of optical constant data sets. Comparison of the experimental extinction spectra to the theoretical spectra demonstrates that fresh sols of Na, K and Rb contain small metal particles with diameters suitable for surface-enhanced Raman (SER) spectroscopic studies. Fresh Cs colloids, reported for the first time, show signs of particle aggregation in long strings. Raman spectra of Na, K and Rb colloids are presented in the region between 150 and 700 cm-1. We find that Na colloids display two broad SER features at 290 and 530 cm-1, K colloids display two SER features at 220 and 480 cm-1, and Rb colloids display one band at 215 cm-1. The lower-frequency bands for Na and K sols and the 215 cm-1 band of Rb sols may be due to lattice modes of amorphous alkali-metal hydroxides on the metal surfaces. The two higher-frequency bands at 480 and 530 cm-1 remain unassigned. C1 UNIV CALIF LOS ANGELES, DEPT CHEM & BIOCHEM, LOS ANGELES, CA 90024 USA. ST VINCENT COLL, DEPT CHEM, LATROBE, PA 15650 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP BOZLEE, B (reprint author), WHITMAN COLL, DEPT CHEM, WALLA WALLA, WA 99362 USA. OI Hess, Nancy/0000-0002-8930-9500 NR 23 TC 7 Z9 7 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 21 PY 1992 VL 196 IS 5 BP 437 EP 444 DI 10.1016/0009-2614(92)85717-O PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JH692 UT WOS:A1992JH69200008 ER PT J AU PRATT, ST DEHMER, JL DEHMER, PM AF PRATT, ST DEHMER, JL DEHMER, PM TI PHOTOELECTRON-SPECTROSCOPY OF THE LINEAR (A2A1)3PB2 1B2 RYDBERG STATE OF WATER SO CHEMICAL PHYSICS LETTERS LA English DT Article ID MULTIPHOTON IONIZATION SPECTROSCOPY; PHOTOIONIZATION CROSS-SECTIONS; VACUUM ULTRAVIOLET; PREDISSOCIATION DYNAMICS; ABSORPTION-SPECTRA; VIBRONIC STRUCTURE; EXCITED-STATES; H2O; D2O; MOLECULE AB Photoelectron spectra are reported for two-photon-resonant, three-photon ionization via several vibrational levels of the linear (A2A1)3pb2 1B2 Rydberg state of H2O and D2O. In the dominant photoionization pathway, the ejection of the Rydberg electron occurs with no change in the electronic or vibrational state of the ion core, providing direct confirmation of the vibrational numbering of the 1B2 state proposed by Abramson et al. Photoionization accompanied by excitation of the symmetric stretch in the resulting ion is also observed, reflecting the difference in bond lengths between the 1B2 Rydberg state and the A2A1 ionic state. RP PRATT, ST (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 31 TC 7 Z9 7 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 21 PY 1992 VL 196 IS 5 BP 469 EP 474 DI 10.1016/0009-2614(92)85722-M PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JH692 UT WOS:A1992JH69200013 ER PT J AU PUSECHEL, RF BLAKE, DF SNETSINGER, KG HANSEN, ADA VERMA, S KATO, K AF PUSECHEL, RF BLAKE, DF SNETSINGER, KG HANSEN, ADA VERMA, S KATO, K TI BLACK CARBON (SOOT) AEROSOL IN THE LOWER STRATOSPHERE AND UPPER TROPOSPHERE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID LIGHT-ABSORPTION; ARCTIC HAZE; EL-CHICHON; COMPONENT AB As determined by impactor samplers flown on ER-2 and DC-8 aircraft, black carbon aerosol (BCA) mass loadings in the stratosphere average 0.6 nanograms per standard cubic meter, or 0.01% of the total aerosol. Upper tropospheric BCA increases to 0.3%. Low stratospheric concentration is commensurate with present commercial air traffic fuel consumption, given the following assumptions: the BCA emissions are 0.1 grams per kilogram of fuel consumed, 10% of route mileage is above the tropopause, and average BCA stratospheric residence time is about one year. Taking BCA into account, the stratospheric single scatter albedo is almost-equal-to 0.99. Using parameters for planned supersonic commercial aircraft, whose emissions will be predominantly in the stratosphere, we show that such traffic will double stratospheric BCA concentration. This would reduce the aerosol single scattering albedo by one percent, and double the BCA surface area that is available for heterogeneous chemistry. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. SETI INST,MT VIEW,CA 94043. TMA NORCAL,RICHMOND,CA 94804. RP PUSECHEL, RF (reprint author), NASA,AMES RES CTR,MS 239-4,MOFFETT FIELD,CA 94035, USA. NR 26 TC 11 Z9 11 U1 2 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 21 PY 1992 VL 19 IS 16 BP 1659 EP 1662 DI 10.1029/92GL01801 PG 4 WC Geosciences, Multidisciplinary SC Geology GA JL393 UT WOS:A1992JL39300009 ER PT J AU NILSEN, J SCOFIELD, JH CHANDLER, EA AF NILSEN, J SCOFIELD, JH CHANDLER, EA TI REINVESTIGATING THE EARLY RESONANTLY PHOTOPUMPED X-RAY LASER SCHEMES SO APPLIED OPTICS LA English DT Article DE X-RAY LASERS; RESONANTLY PHOTOPUMPED LASERS ID HELIUM ISOELECTRONIC SEQUENCE; POPULATION-INVERSION; IONS; PHOTOEXCITATION; TRANSITION; RADIATION; ENERGIES; PLASMAS; ATOMS; GAIN AB Although H and He-like resonantly photopumped laser schemes were among the earliest methods proposed for producing x-ray lasers, demonstrating these schemes in the laboratory has proved to be elusive. Nevertheless the resonantly photopumped schemes remain interesting both because of their potential to improve the efficiency of lasers that otherwise operate through other process such as recombination and because of their potential for yielding entirely new and relatively efficient lasers. We present an expanded list of candidate lasers that operate by utilizing Ly-alpha or He-alpha radiation from a pump ion to photopump an electron from the ground state of a H or He-like lasant ion to the n = 3 or 4 state, with subsequent lasing between the n = 4 --> n = 3 or n = 3 --> n = 2 states of the H or He-like ion. The example of the potassium-pumped chlorine scheme, which exhibits both 4 --> 3 and 3 --> 2 laser lines, has been modeled extensively, and the results of the calculation are presented. RP NILSEN, J (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 32 TC 25 Z9 25 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 4950 EP 4956 PG 7 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200016 PM 20733655 ER PT J AU NILSEN, J AF NILSEN, J TI RESONANTLY PHOTOPUMPED LI-LIKE X-RAY LASERS SO APPLIED OPTICS LA English DT Article DE X-RAY LASERS; RESONANTLY PHOTOPUMPED LASERS ID POPULATION-INVERSION; ALPHA RADIATION; AMPLIFICATION; PLASMAS; IONS; PHOTOEXCITATION; GAIN; SCHEME; ALUMINUM; TITANIUM AB We identify potential candidates for achieving x-ray lasing in Li-like ions by utilizing Ly-alpha or He-alpha radiation to photopump an electron resonantly from the n = 2 state of the Li-like ion to the n = 4 or 5 state with subsequent lasing between the n = 5 --> n = 4, n = 5 --> n = 3, or n = 4 --> n = 3 states of the Li-like ion. To identify potential resonances we calculate all the n = 2 --> n = 4 and 5 transitions in Li-like ions that look favorable to pump and identify the resonances that are possible with Ly-alpha or He-alpha radiation. Many laser candidates are identified with the baron-pumped Na scheme being modeled as it appears to be an extremely promising candidate that could be driven by pulsed power machines or optical lasers of modest energy. Since gain has already been observed in Li-like ions because of recombination one can also combine the advantages of resonant photopumping with recombination to produce an improved Li-like laser. RP NILSEN, J (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 48 TC 10 Z9 10 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 4957 EP 4961 PG 5 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200017 PM 20733656 ER PT J AU EDER, DC SCOTT, HA MAXON, S LONDON, RA AF EDER, DC SCOTT, HA MAXON, S LONDON, RA TI PHOTON TRAPPING MODELS FOR X-RAY LASERS SO APPLIED OPTICS LA English DT Article ID ESCAPE PROBABILITIES; LINE TRANSFER; PLASMAS; DESIGN; MEDIA AB Optimum methods for calculating the effects of photon trapping are discussed. An efficient line-transfer algorithm that can calculate trapping when there are overlapping and interacting lines is described. Escape probability formulas are shown to be appropriate for calculating photon trapping for isolated lines and for the highest-energy line in a group of lines in many situations. Major computational savings are achieved by using cylindrical escape probabilities for recombination x-ray laser schemes. For collisional x-ray laser schemes it is shown that the calculation of line transfer in planar geometry is sufficiently fast that one only obtains substantial savings by exploiting the coarser spatial zoning that is possible when using escape probabilities in regions of steep velocity gradients. The use of escape probabilities is shown to be particularly well suited for single-zone parameter studies. RP EDER, DC (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 16 TC 14 Z9 14 U1 1 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 4962 EP 4968 PG 7 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200018 PM 20733657 ER PT J AU MUENDEL, MH HAGELSTEIN, PL DASILVA, LB AF MUENDEL, MH HAGELSTEIN, PL DASILVA, LB TI PREDICTED 4-WAVE-MIXING AND TRIPLING RATES FOR NEON-LIKE YTTRIUM X-RAY LASER-RADIATION IN SODIUM-LIKE PLASMAS SO APPLIED OPTICS LA English DT Article AB Presented are predicted conversion rates for four-wave mixing of the output of the Ne-like Y soft-x-ray laser (15.495 nm) with that of an optical laser in a Na-like Ca plasma to give radiation at approximately 7.8 nm (approximate frequency doubling). Also presented are frequency tripling rates of the Ne-like Y laser in a Na-like V plasma to give radiation at 5.165 nm. In each case the nonlinear susceptibilities and converted intensities are calculated, and phase-matching considerations are discussed. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. MIT,ELECTR RES LAB,BLDG 38-276,77 MASSACHUSETTS AVE,CAMBRIDGE,MA 02139. NR 13 TC 3 Z9 3 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 4969 EP 4972 PG 4 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200019 PM 20733658 ER PT J AU HADDAD, WS CULLEN, D SOLEM, JC LONGWORTH, JW MCPHERSON, A BOYER, K RHODES, CK AF HADDAD, WS CULLEN, D SOLEM, JC LONGWORTH, JW MCPHERSON, A BOYER, K RHODES, CK TI FOURIER-TRANSFORM HOLOGRAPHIC MICROSCOPE SO APPLIED OPTICS LA English DT Article DE MICROHOLOGRAPHY; FOURIER-TRANSFORM MICROHOLOGRAPHY; BIOLOGICAL SAMPLES; GLYCEROL MICRODROP; RESOLUTION; NUMERICAL RECONSTRUCTION; REFERENCE SCATTERER AB We describe a holographic microscope with a spatial resolution approaching the diffraction limit. The instrument uses a tiny drop of glycerol as a lens to create the spherically diverging reference illumination necessary for Fourier-transform holography. Measurement of the point-spread function, which is obtained by imaging a knife edge in dark-field illumination, indicates a transverse resolution of 1.4-mu-m with wavelength lambda = 514.5 nm. Longitudinal resolution is obtained from the holograms by the numerical equivalent of optical sectioning. We describe the method of reconstruction and demonstrate the microscope's capability with selected biological specimens. The instrument offers two unique capabilities: (1) it can collect three-dimensional information in a single pulse of light, avoiding specimen damage and bleaching; and (2) it can record three-dimensional motion pictures from a series of light pulses. The conceptual design is applicable to a broad range of wavelengths and we discuss extension to the x-ray regime. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP HADDAD, WS (reprint author), MCR TECHNOL CORP,POB 10084,CHICAGO,IL 60610, USA. NR 19 TC 97 Z9 99 U1 1 U2 15 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 4973 EP 4978 PG 6 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200020 PM 20733659 ER PT J AU MANSFIELD, DK KRUG, PA VOCATURO, M GUTTADORA, L ROCKMORE, M MICAI, K AF MANSFIELD, DK KRUG, PA VOCATURO, M GUTTADORA, L ROCKMORE, M MICAI, K TI STARK-TUNED, FAR-INFRARED LASER FOR HIGH-FREQUENCY PLASMA DIAGNOSTICS SO APPLIED OPTICS LA English DT Article ID HIGH-POWER OPERATION AB A Stark-tuned optically pumped far-infrared CH3OH laser operating at 119-mu-m has been built. The laser is designed to operate at high power while exhibiting a well-separated Stark doublet. At a pump power of 65 W and an electric field of 1 kV/cm the laser has delivered over 100 mW cw while exhibiting a frequency splitting of 34 MHz. These parameters indicate that this laser would be suitable for use in the present generation of modulated interferometers on large thermonuclear plasma devices. The achieved modulation frequency is more than an order of magnitude higher than could be achieved by using standard techniques. C1 UNIV SYDNEY,SCH PHYS,SYDNEY,NSW 2006,AUSTRALIA. RP MANSFIELD, DK (reprint author), PLASMA PHYS LAB,PRINCETON,NJ 08543, USA. NR 6 TC 11 Z9 11 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 5030 EP 5033 PG 4 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200029 PM 20733668 ER PT J AU MARCY, HO WARREN, LF WEBB, MS EBBERS, CA VELSKO, SP KENNEDY, GC CATELLA, GC AF MARCY, HO WARREN, LF WEBB, MS EBBERS, CA VELSKO, SP KENNEDY, GC CATELLA, GC TI 2ND-HARMONIC GENERATION IN ZINC TRIS(THIOUREA) SULFATE SO APPLIED OPTICS LA English DT Article DE NONLINEAR OPTICAL; 2ND-HARMONIC GENERATION; ZINC TRIS(THIOUREA) SULFATE; PHASE MATCHING ID BIAXIAL CRYSTALS; SINGLE-CRYSTALS; PHASE; COEFFICIENTS AB The linear and second-order nonlinear optical properties of single-crystal zinc tris(thiourea) sulfate, or ZTS, are determined. The deduced nonlinear coefficients are \d3l\ = 0.3l, \d32\ = 0.35, and \d33\ = 0.23 Pm/V compared with a \d14\ value of 0.39 pm/V for potassium dihydrogen phosphate. Because it exhibits a low angular sensitivity (delta-DELTA-k/delta-theta), ZTS may prove useful for type-II second-harmonic generation from 1.06 to 1.027-mu-m. We present the phase-matching measurement data for ZTS and compare the calculated frequency conversion efficiency for ZTS with that of several other well-characterized materials. C1 LAWRENCE LIVERMORE NATL LAB,NONLINEAR OPT MAT GRP,LIVERMORE,CA 94550. CLEVELAND CRYSTALS INC,CLEVELAND,OH 44110. RP MARCY, HO (reprint author), ROCKWELL INT CORP,CTR SCI,POB 1085,THOUSAND OAKS,CA 91358, USA. NR 39 TC 188 Z9 194 U1 0 U2 9 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 5051 EP 5060 PG 10 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200033 PM 20733672 ER PT J AU LAWSON, JK SPECK, DR BIBEAU, C BURKHART, SC HENESIAN, MA LAUMANN, CW WEILAND, TL WILCOX, RB AF LAWSON, JK SPECK, DR BIBEAU, C BURKHART, SC HENESIAN, MA LAUMANN, CW WEILAND, TL WILCOX, RB TI TEMPORAL SHAPING OF 3RD-HARMONIC PULSES ON THE NOVA LASER SYSTEM SO APPLIED OPTICS LA English DT Article DE ND-GLASS LASER; INERTIAL CONFINEMENT FUSION; NOVA LASER FACILITY ID COMPRESSION; OSCILLATOR; ND AB We demonstrate temporal shaping of 0.35-mu-m-wavelength pulses produced by a third-harmonic conversion of the output from the Nova Nd:phosphate glass-laser amplifier system for use in inertial confinement fusion experiments. We describe the computer models used to calculate the pulse shape that is required as the input to the amplifier system, the experimental apparatus used to produce these pulses, and the high-power 0.35-mu-m shaped pulses produced in recent experiments. RP LAWSON, JK (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 5508 L-493,LIVERMORE,CA 94550, USA. NR 23 TC 6 Z9 12 U1 1 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1992 VL 31 IS 24 BP 5061 EP 5068 PG 8 WC Optics SC Optics GA JJ472 UT WOS:A1992JJ47200034 PM 20733673 ER PT J AU ALSOP, DC CHENG, ES CLAPP, AC COTTINGHAM, DA FISCHER, ML GUNDERSEN, JO KREYSA, E LANGE, AE LUBIN, PM MEINHOLD, PR RICHARDS, PL SMOOT, GF AF ALSOP, DC CHENG, ES CLAPP, AC COTTINGHAM, DA FISCHER, ML GUNDERSEN, JO KREYSA, E LANGE, AE LUBIN, PM MEINHOLD, PR RICHARDS, PL SMOOT, GF TI A SEARCH FOR ANISOTROPY IN THE COSMIC MICROWAVE BACKGROUND ON INTERMEDIATE ANGULAR SCALES SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND ID RADIATION; FLUCTUATIONS AB The results of a search for anisotropy in the cosmic microwave background on angular scales near 1-degrees are presented. Observations were simultaneously performed in bands centered at frequencies of 6, 9, and 12 cm-1 with a multifrequency bolometric receiver mounted on a balloon-borne telescope. The statistical sensitivity of the data is the highest reported to date at this angular scale, which is of critical importance for understanding the formation of structure in the universe. Signals in excess of random were observed in the data. The experiment, data analysis, and interpretation are described. C1 UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. MAX PLANCK INST RADIOASTRON,W-5300 BONN 1,GERMANY. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RI Alsop, David/J-5764-2013 OI Alsop, David/0000-0002-8206-1995 NR 17 TC 37 Z9 37 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1992 VL 395 IS 2 BP 317 EP 325 DI 10.1086/171654 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JH628 UT WOS:A1992JH62800001 ER PT J AU BALL, R AF BALL, R TI A DYNAMIC ANALYSIS OF THE BARRED SPIRAL GALAXY NGC-3359 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC-3359); GALAXIES, KINEMATICS AND DYNAMICS; GALAXIES, SPIRAL ID HIGH-RESOLUTION OBSERVATIONS; DISK GALAXIES; GAS-FLOW; NEUTRAL HYDROGEN; MOLECULAR CLOUDS; OVAL DISTORTIONS; STAR FORMATION; DENSITY WAVES; DARK MATTER; MODELS AB The dynamics of gas in the disk of the SBc galaxy NGC 3359 are studied by means of hydrodynamical simulations. These models are compared to the observed structure and kinematics of neutral hydrogen in the galaxy, as mapped with a resolution of 1 kpc at the VLA. Near-infrared surface photometric observations of the stellar bar are used to constrain models further. The most successful models reproduce the essentials of the observed gaseous spiral structure in both its distribution and kinematics. However, this success is achieved only by arbitrarily imposing an oval distortion potential which does not correspond to the shape of the observed stellar bar. Models using only a bar derived from the surface photometry are unable to generate spiral structure of the required amplitude in the outer parts of the galactic disk, because the physical bar is too short and its forces fall off too rapidly. The essential role of the oval distortion in the more successful models seems to be maintenance of a significant tangential force on the gas well out into the disk. We offer brief speculations on what might fill a similar role in the physical galaxy: leading candidates are various types of spiral wave, for which the oval distortion may act as a proxy, or possibly a global mode of the galaxy's disk. RP BALL, R (reprint author), LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY PHYS,LIVERMORE,CA 94550, USA. NR 72 TC 20 Z9 20 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1992 VL 395 IS 2 BP 418 EP 443 DI 10.1086/171662 PN 1 PG 26 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JH628 UT WOS:A1992JH62800009 ER PT J AU SMALE, AP LOCHNER, JC AF SMALE, AP LOCHNER, JC TI LONG-TERM VARIABILITY IN LOW-MASS X-RAY BINARIES - A STUDY USING DATA FROM VELA-5B SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, CLOSE; STARS, VARIABLES, OTHER; X-RAYS, STARS ID TIME-SERIES ANALYSIS; UNEVENLY SPACED DATA; ORBITAL PERIOD; OPTICAL COUNTERPART; TRANSIENT V0332+53; CYGNUS X-2; 4U 1820-30; DISCOVERY; MODULATION; MODEL AB We have examined a complete sample of 1 s resolution Vela 5B data for all low-mass X-ray binaries for which they can be extracted without source confusion, and searched for periodicities of more than 1 day using Fourier analysis and period folding techniques. We confirm the existence of a 174.6 day period in X1820 - 303 with extremely high confidence, derive an accurate ephemeris for the modulation, and model the form of the folded light curve. We have searched the data from X1916 - 053 for the published 199 day period; no significant periodicities are detected in the raw data, although the candidate period appears in power spectra constructed from a filtered data set. We conclude that this period detection is not firm, with a false alarm probability (FAP) in the range 10% - 20%. For Cygnus X-2 we find a significant periodicity of 77.34 days with a false alarm probability of less than 10(-5); this may be associated with an accretion disk precession time scale. We detect the 4.8 hr orbital period of Cygnus X-3, and show in addition that the power spectrum shows variability on time scales up to 200 days. No periodicities greater than 1 day with a significance greater than 2-sigma were found in the following sources: NGC 1851, X0614 + 091, X0918 - 549, X0921 - 630, X1254 - 690, X1627 - 673, X1636 - 536, X1735 - 444, X1822 - 371, X1822 - 000, Serpens X-1, X1957 + 115, and M15. For these sources we have placed upper limits on the existence of periods of order hundreds of days, and also upon the detection of some periods in the literature of approximately a fev; days. Our analysis suggests that while long-term cyclic variability is common among high-mass binaries, it is a rare occurrence in the low-mass systems. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP SMALE, AP (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,CODE 666,GREENBELT,MD 20771, USA. NR 53 TC 47 Z9 46 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1992 VL 395 IS 2 BP 582 EP 591 DI 10.1086/171678 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JH628 UT WOS:A1992JH62800025 ER PT J AU HERANT, M BENZ, W COLGATE, S AF HERANT, M BENZ, W COLGATE, S TI POSTCOLLAPSE HYDRODYNAMICS OF SN-1987A - 2-DIMENSIONAL SIMULATIONS OF THE EARLY EVOLUTION SO ASTROPHYSICAL JOURNAL LA English DT Article DE HYDRODYNAMICS; STARS, INDIVIDUAL (SN-1987A); STARS, NEUTRON; SUPERNOVAE, INDIVIDUAL (SN-1987A) ID SUPERNOVA 1987A; LINE-PROFILES; CORE-COLLAPSE; LIGHT-CURVE; EMISSION; INSTABILITIES; ANNIHILATION; EXPLOSIONS; NEUTRINOS; ENVELOPE AB We present the results of simulations in two spatial dimensions of the very early phases of the explosion of SN 1987A. Starting our calculations close to the time when the prompt shock emerges from the neutrino-sphere, we simulate the first few seconds of the explosion using a two-dimensional cylindrical geometry smooth particle hydrodynamics (SPH) code. The explosion energy is obtained, as in the delayed mechanism, by tapping a small fraction of the energy carried by the neutrinos produced in the making of the neutron star. The success of the explosion is determined to be sensitive to the duration of the infall, the timing of the bounce, and the subsequent neutrino heating. Using a semianalytical model for the initial structure of the collapsed object, we present two simulations that differ by the mass that has been allowed to collapse into a neutron star prior to the bounce. In the case of a short initial infall (1.37 M. baryon mass proto-neutron star), the explosion fails due to excessive cooling. For a longer initial infall (1.5 M. baryon mass proto-neutron star), the cooling is less and the explosion is successful although relatively weak [approximately 0.35 foe (10(51) ergs)]. We show that in this case, a successful explosion is brought about by the presence of an entropy gradient which, combined with the gravitational pull of the neutron star, leads to extremely strong instabilities. In such models, convective currents carry the deposited energy away from the neutron star and bring in new, cold material, thus preventing excessive neutrino cooling. The flow is coherent on very large scales and does not lead to microscopic mixing. The critical importance of the global circulation, for the success of the explosion, is demonstrated by the fact that similar simulations, carried out with a one-dimensional code, fizzle dramatically. It also appears that the early mixing during the explosion could account for a number of observational features of SN 1987A, such as infrared iron line profiles with extended high-velocity wings, which have so far remained unexplained. C1 UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85724. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP HERANT, M (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 43 TC 204 Z9 208 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1992 VL 395 IS 2 BP 642 EP 653 DI 10.1086/171685 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JH628 UT WOS:A1992JH62800032 ER PT J AU VEERARAGHAVAN, S STEBBINS, A AF VEERARAGHAVAN, S STEBBINS, A TI LARGE-SCALE MICROWAVE ANISOTROPY FROM GRAVITATING SEEDS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY; COSMIC MICROWAVE BACKGROUND ID COSMIC STRINGS; GLOBAL TEXTURE; DOMAIN-WALLS AB Topological defects could have seeded primordial inhomogeneities in cosmological matter. We examine the horizon-scale matter and geometry perturbations generated by such seeds in an expanding homogeneous and isotropic universe. Evolving particle horizons generally lead to perturbations around motionless seeds, even when there are compensating initial underdensities in the matter. We describe the pattern of the resulting large angular scale microwave anisotropy. C1 NASA,CTR FERMILAB ASTROPHYS,FERMILAB,BATAVIA,IL 60510. RP VEERARAGHAVAN, S (reprint author), UNIV MASSACHUSETTS,DEPT PHYS & ASTRON,AMHERST,MA 01003, USA. NR 17 TC 13 Z9 13 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1992 VL 395 IS 2 BP L55 EP L58 DI 10.1086/186487 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JH629 UT WOS:A1992JH62900001 ER PT J AU BOER, GJ ARPE, K BLACKBURN, M DEQUE, M GATES, WL HART, TL LETREUT, H ROECKNER, E SHEININ, DA SIMMONDS, I SMITH, RNB TOKIOKA, T WETHERALD, RT WILLIAMSON, D AF BOER, GJ ARPE, K BLACKBURN, M DEQUE, M GATES, WL HART, TL LETREUT, H ROECKNER, E SHEININ, DA SIMMONDS, I SMITH, RNB TOKIOKA, T WETHERALD, RT WILLIAMSON, D TI SOME RESULTS FROM AN INTERCOMPARISON OF THE CLIMATES SIMULATED BY 14 ATMOSPHERIC GENERAL-CIRCULATION MODELS SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID PHYSICAL PARAMETERIZATIONS; FEEDBACK PROCESSES; ECMWF; JANUARY; PERFORMANCE; IMPACT AB Some climatological information from 14 atmospheric general circulation models is presented and compared in order to assess the ability of a broad group of models to simulate current climate. The quantities considered are cross sections of temperature, zonal wind, and meridional stream function together with latitudinal distributions of mean sea level pressure and precipitation rate. The nature of the deficiencies in the simulated climates that are common to all models and those which differ among models is investigated; the general improvement in the ability of models to simulate certain aspects of the climate is shown; consideration is given to the effect of increasing resolution on simulated climate; and approaches to understanding and reducing model deficiencies are discussed. The information presented here is a subset of a more voluminous compilation which is available in report form (Boer et al., 1991). This report contains essentially the same text, but results from all 14 models are presented together with additional results in the form of geographical distributions of surface variables and certain difference statistics. C1 METEOROL OFF,BRACKNELL RG12 2SZ,BERKS,ENGLAND. METEOROL RES INST,TSUKUBA,IBARAKI 305,JAPAN. PRINCETON UNIV,GEOPHYS FLUID DYNAM LAB,PRINCETON,NJ 08542. NATL CTR ATMOSPHER RES,BOULDER,CO 80303. MAIN GEOPHYS OBSERV,ST PETERSBURG 193018,USSR. UNIV MELBOURNE,DEPT METEOROL,PARKVILLE,VIC 3052,AUSTRALIA. MAX PLANCK INST METEOROL,W-2000 HAMBURG 13,GERMANY. UNIV READING,DEPT METEOROL,READING RG6 2AU,ENGLAND. CTR NATL RECH METEOROL,METRO FRANCE,F-31057 TOULOUSE,FRANCE. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. BUR METEOROL,RES CTR,MELBOURNE,VIC 3001,AUSTRALIA. ECOLE NORM SUPER,METEOROL DYNAM LAB,CNRS,F-75231 PARIS 05,FRANCE. RP BOER, GJ (reprint author), CANADIAN CLIMATE CTR,4905 DUFFERIN ST,DOLINSVIEW M3H 5T4,ONTARIO,CANADA. NR 43 TC 136 Z9 137 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD AUG 20 PY 1992 VL 97 IS D12 BP 12771 EP 12786 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA JL282 UT WOS:A1992JL28200001 ER PT J AU HUNT, RD ANDREWS, L AF HUNT, RD ANDREWS, L TI INFRARED-SPECTRA OF HF COMPLEXES WITH CCL4, CHCL3, AND CH2CL2 IN SOLID ARGON SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID HYDROGEN-BONDED COMPLEXES; PROTON AFFINITIES; GAS-PHASE; DIMERS; FLUORIDE; ACIDITY; HCN; BASICITY; SCALE AB Hydrogen fluoride complexes with CCl4, CHCl3, and CH2Cl2 were prepared in argon matrices and characterized by infrared spectroscopy. The spectra of CCl4 and HF revealed a strong CCl4-HF complex absorption at 3876 cm-1 with a considerably weaker band at 3904 cm-1 due to the CCl4-FH complex. Only one 1:2 complex, CCl4-HF-HF, was observed at higher HF concentrations and matrix annealings. Similarly, the HF interaction with CH2Cl2 produced two 1:1 complexes and one 1:2 complex. However, the major product absorption at 3901 cm-1 was assigned to the anti-hydrogen-bonded complex, CH2Cl2-FH, while a less intense doublet due to the CH2Cl2-HF complex appeared at 3799 and 3793 cm-1. The IR spectra of CHCl3 and HF were more complicated due to the presence of a third 1:1 complex. The CHCl3-HF complex band at 3860 cm-1 was clearly the strongest product absorption. In addition, the CHCl3-FH complex produced a 3903-cm-1 absorption, while a triplet probably due to the HF-HCCl3 complex was observed at 3893, 3883, and 3875 cm-1. Finally, the acid-base properties of these common solvents were considered. C1 UNIV VIRGINIA,DEPT CHEM,CHARLOTTESVILLE,VA 22901. RP HUNT, RD (reprint author), OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831, USA. NR 32 TC 11 Z9 11 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 20 PY 1992 VL 96 IS 17 BP 6945 EP 6949 DI 10.1021/j100196a018 PG 5 WC Chemistry, Physical SC Chemistry GA JK807 UT WOS:A1992JK80700018 ER PT J AU MUELLER, KT BALTISBERGER, JH WOOTEN, EW PINES, A AF MUELLER, KT BALTISBERGER, JH WOOTEN, EW PINES, A TI ISOTROPIC CHEMICAL-SHIFTS AND QUADRUPOLAR PARAMETERS FOR O-17 USING DYNAMIC-ANGLE SPINNING NMR SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID NUCLEAR MAGNETIC-RESONANCE; RESOLUTION O-17 NMR; SOLID-STATE; MAGIC ANGLE; DOUBLE-ROTATION; DOUBLE-ROTOR; VASS NMR; SPECTROSCOPY; TRANSITION; ZEOLITES AB Several oxygen-17-enriched silicates were studied using dynamic-angle spinning (DAS) NMR spectroscopy at two magnetic field strengths. The DAS method averages second-order quadrupolar interactions by reorienting a sample about a time-dependent axis, thereby yielding high-resolution spectra for half-odd integer spin quadrupolar nuclei such as oxygen-17. A narrow spectral line is observed for each distinct oxygen site in a powdered sample at the sum of the isotropic chemical shift and the field-dependent isotropic second-order quadrupolar shift. Using equations for the total shift observed at two field strengths, the chemical shift is uniquely determined together with a product of the quadrupolar coupling constant (C(Q) = e2qQ/h) and the quadrupolar asymmetry parameter (eta). For one silicate, we demonstrate aa computer program that uses the isotropic shifts and quadrupolar products as constraints and provides simulations of overlapped magic-angle spinning line shapes. In this way the quadrupolar parameters, C(Q) and eta, are determined separately for each crystallographic site. The silicates studied include the discrete orthosilicates larnite (Ca2SiO4) and forsterite (Mg2SiO4), as well as diopside (CaMgSi2O6), wollastonite (CaSiO3), and clinoenstatite (MgSiO3), which are minerals composed of chains of silicon-oxygen tetrahedra. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,1 CYCLOTRON RD,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RI Mueller, Karl/A-3637-2010 NR 48 TC 72 Z9 72 U1 1 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 20 PY 1992 VL 96 IS 17 BP 7001 EP 7004 DI 10.1021/j100196a028 PG 4 WC Chemistry, Physical SC Chemistry GA JK807 UT WOS:A1992JK80700028 ER PT J AU ALNAJJAR, MS GARROSSIAN, MS AUTREY, ST FERRIS, KF FRANZ, JA AF ALNAJJAR, MS GARROSSIAN, MS AUTREY, ST FERRIS, KF FRANZ, JA TI KINETIC AND ABINITIO THEORETICAL-STUDY OF HYDROGEN-ATOM ABSTRACTION FROM THIOLS BY THIYL RADICALS - BASIS RATE EXPRESSIONS FOR REACTIONS OF SULFUR-CENTERED RADICALS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID BIMOLECULAR SELF-REACTION; TERT-BUTYL RADICALS; ARRHENIUS PARAMETERS; ABSORPTION-SPECTRA; RATE CONSTANTS; TERMINATION; DISULFIDES; MICELLES; PAIRS; SPECTROSCOPY AB Arrhenius rate expressions were determined for the abstraction of hydrogen atom from thiophenol and hexanethiol by the octanethiyl radical at 25-100-degrees-C in nonane. Octanethiyl radicals were produced by steady-state photolysis of octyl thiobenzoate. Analysis of octyl disulfide and octanethiol provided relative rate expressions for abstraction of hydrogen atom from thiols versus self-termination of the octanethiyl radical. For hexanethiol, log (k(abs)/k(t)1/2) = (2.94 +/- 0.29) - (3.84 +/- 0.41)/theta, and for thiophenol, log (k(abs)/k(t)1/2) = (2.56 +/- 0.19) - (2.88 +/- 0.28)/theta; theta = 2.3RT kcal/mol. Combining these expressions with the Smoluchowski expression for self-termination of octanethiyl in nonane, log (k(t)1/2) = 5.96 - 1.335/theta, which employs experimental diffusion coefficients of octanethiol and a spin selection factor sigma = 1, yields, for thiophenol, log (k(abs)/M-1 s-1) = (8.52 +/- 0.18) - (4.22 +/- 0.27)/theta, and for hexanethiol, log (k(abs)/M-1 s-1) = (8.90 +/- 0.29) - (5.18 +/- 0.41)/theta (errors are 2-sigma). The rate of disappearance of octanethiyl/diphenylketyl radical pairs in SDS micelles, determined by nanosecond optical spectroscopy, was found to be unchanged in a 700-G magnetic field, providing evidence for rapid intersystem crossing of sulfur-centered radical pairs and support for the assignment of sigma = 1 above. Ab initio electronic structure calculations on the reaction HS. + HSH --> HSH + .SH, performed at AH and correlated levels, predict an activation barrier of DELTA-H double dagger = 4.6 kcal/mol, in close agreement with the experimental barrier for the octanethiyl + hexanethiol reaction. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 60 TC 22 Z9 22 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 20 PY 1992 VL 96 IS 17 BP 7037 EP 7043 DI 10.1021/j100196a036 PG 7 WC Chemistry, Physical SC Chemistry GA JK807 UT WOS:A1992JK80700036 ER PT J AU PINNICK, DA AGNEW, SF SWANSON, BI AF PINNICK, DA AGNEW, SF SWANSON, BI TI FLUID N2O4 AT VERY HIGH-PRESSURE AND HIGH-TEMPERATURE - OBSERVATION OF THE NITRITE ISOMER SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID DINITROGEN TETROXIDE; CHEMISTRY AB Infrared and UV-visible absorption spectra have been obtained for samples of N2O4 contained in diamond-anvil cells at high pressures and high temperatures. Infrared spectra allow characterization of the phase and chemistry of N2O4 as a function of temperature and pressure, while UV-visible absorption spectra allow an independent measure of DELTA-H and correlation with previous measurements. Three new peaks appear in the IR spectra at low pressures and elevated temperatures in the liquid phase, one in the NO2 stretching region, one in the NO stretching region, and the third in the NON stretching region, all of which we assign to the nitrite isomer of N2O4, O2N-O-NO. The appearance of these features is reversible and allows us to measure a DELTA-H for the isomerization, both with IR and UV-visible absorption spectroscopies. The DELTA-H for isomerization at 0.4 GPa is 19.1 +/- 0.8 kJ/mol, which is compared with previous measurements for the dissociation of N2O4 at ambient pressure. We find that the heretofore unreported presence of isomerization interfered with the previously measured DELTA-H for N2O4 dissociation in solution (determined with UV-visible absorption), and our correction to these previous low-pressure data brings it into better agreement with independent ESR measurements on the dissociation. C1 LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP INC-4,MAIL STOP C345,LOS ALAMOS,NM 87545. NR 17 TC 33 Z9 33 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 20 PY 1992 VL 96 IS 17 BP 7092 EP 7096 DI 10.1021/j100196a046 PG 5 WC Chemistry, Physical SC Chemistry GA JK807 UT WOS:A1992JK80700046 ER PT J AU LIU, LC AF LIU, LC TI SPIN ISOSPIN CORRELATION AND MULTINUCLEON EFFECTS IN ETA-MESON PRODUCTION BY PIONS ON HE-3 SO PHYSICS LETTERS B LA English DT Article ID SCATTERING; THRESHOLD; MODEL AB Pion-induced eta-production on a pair of nucleons is shown to be as important as the one-step pi-eta conversion on a single nucleon. The dominant two-nucleon contribution comes from the pi(NN)J=0,I=1 --> eta(NN)J=0,I'=1 transition. Because of the large cancellation among various three-nucleon amplitudes, the effect of three-nucleon processes on the eta-production cross sections is much smaller than that of the two-nucleon processes. RP LIU, LC (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,T-2,LOS ALAMOS,NM 87544, USA. NR 14 TC 7 Z9 7 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 20 PY 1992 VL 288 IS 1-2 BP 18 EP 22 DI 10.1016/0370-2693(92)91948-9 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JJ094 UT WOS:A1992JJ09400004 ER PT J AU CHOW, WW PEREIRA, MF KOCH, SW AF CHOW, WW PEREIRA, MF KOCH, SW TI MANY-BODY TREATMENT ON THE MODULATION RESPONSE IN A STRAINED QUANTUM-WELL SEMICONDUCTOR-LASER MEDIUM SO APPLIED PHYSICS LETTERS LA English DT Article ID LINEWIDTH ENHANCEMENT FACTOR; REFRACTIVE-INDEX; GAIN AB The carrier density modulation response of a semiconductor laser medium is analyzed. The differential gain and linewidth enhancement factor are computed as functions of strain and threshold gain. The example of InGaAs/InP with different InAs content is used to illustrate the situations of zero, tensile and compressive strain. C1 UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721. UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721. RP CHOW, WW (reprint author), SANDIA NATL LABS,DIV 2235,ALBUQUERQUE,NM 87185, USA. NR 12 TC 28 Z9 28 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 758 EP 760 DI 10.1063/1.107789 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600008 ER PT J AU KRAMER, KJ TALWAR, S SIGMON, TW WEINER, KH AF KRAMER, KJ TALWAR, S SIGMON, TW WEINER, KH TI CRYSTALLINITY, STRAIN, AND THERMAL-STABILITY OF HETEROEPITAXIAL SI1-XGEX/SI (100) LAYERS CREATED USING PULSED LASER-INDUCED EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article AB Heteroepitaxy of Si1-xGex/Si alloy layers on Si (100) substrates has been achieved using pulsed laser induced epitaxy (PLIE). The energy of 1 to 20 pulses from a spatially homogenized XeCl excimer laser beam is used to melt a structure consisting of electron-beam evaporated Ge on Si (100) substrates. Alloy films with different Ge fractions are investigated and films with up to 21% Ge content are found to exhibit excellent crystallinity, as confirmed by MeV-ion channeling along the [100] direction. MeV-ion channeling is also used to determine the level of strain in the layers. This is done by comparing angular yield curves around the [110] direction for the substrate and alloy layer. The strain values obtained match with calculations for an ideally strained layer state. The strain is also measured for layers that have been subjected to different thermal cycles. A high level of strain is preserved in the alloy layer even after heating to 950-degrees-C for 1 h. This unusual thermal stability is believed to be due to two process features, the ultrarapid nature of the process and the interfacial grading of the Ge fraction created during the melt-regrowth process. C1 STANFORD UNIV,DEPT ELECT ENGN,STANFORD,CA 94305. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP KRAMER, KJ (reprint author), STANFORD UNIV,STANFORD ELECTR LABS,STANFORD,CA 94305, USA. NR 15 TC 26 Z9 26 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 769 EP 771 DI 10.1063/1.107793 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600012 ER PT J AU SOKOL, PE MA, WJ HERWIG, KW SNOW, WM WANG, Y KOPLIK, J BANAVAR, JR AF SOKOL, PE MA, WJ HERWIG, KW SNOW, WM WANG, Y KOPLIK, J BANAVAR, JR TI FREEZING IN CONFINED GEOMETRIES SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULARLY THIN-FILMS; POROUS VYCOR GLASS; LIQUID-FILMS; FLUIDS; SHEAR; PORES; HE-4 AB Results of detailed structural studies, using elastic neutron scattering, of the freezing of liquid O2 and D2 in porous vycor glass are presented. The experimental studies have been complemented by computer simulations of the dynamics of freezing of a Lennard-Jones liquid in narrow channels bounded by molecular walls. Our results point to a new simple physical interpretation of freezing in confined geometries. C1 ARGONNE NATL LAB,INTENSE PULSED NEUTRON SOURCE,ARGONNE,IL 60439. CUNY CITY COLL,BENJAMIN LEVICH INST,NEW YORK,NY 10031. PENN STATE UNIV,MAT RES LAB,UNIV PK,PA 16802. CUNY CITY COLL,DEPT PHYS,NEW YORK,NY 10031. NATL INST STAND & TECHNOL,DIV QUANTUM METROL,GAITHERSBURG,MD 20899. RP SOKOL, PE (reprint author), PENN STATE UNIV,DEPT PHYS,UNIV PK,PA 16802, USA. RI Herwig, Kenneth/F-4787-2011 NR 23 TC 72 Z9 72 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 777 EP 779 DI 10.1063/1.108461 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600015 ER PT J AU LOVEJOY, ML MELLOCH, MR LUNDSTROM, MS KEYES, BM AHRENKIEL, RK DELYON, TJ WOODALL, JM AF LOVEJOY, ML MELLOCH, MR LUNDSTROM, MS KEYES, BM AHRENKIEL, RK DELYON, TJ WOODALL, JM TI COMPARATIVE-STUDY OF MINORITY ELECTRON PROPERTIES IN P+-GAAS DOPED WITH BERYLLIUM AND CARBON SO APPLIED PHYSICS LETTERS LA English DT Article ID BIPOLAR-TRANSISTORS; TIME AB Minority electron properties in p+-GaAs doped with beryllium (Be) and with carbon (C) are reported. Measurements of essentially identical responses for structures differing only in dopant element demonstrate that the diffusivity (D(n)) and the diffusion lengths (L(n)) are the same in p+-GaAs doped to approximately 10(19) cm-3 with Be- and C-dopants. Zero-field time-of-flight analysis yields D(n)=35 cm2/s and internal quantum efficiency analysis yields L(n)=2.4-mu-m, which implies a lifetime that is approximately at the estimated radiative limit. In addition, the majority Hall mobility was also found to be identical for the Be- and C-doped material. C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598. RP LOVEJOY, ML (reprint author), PURDUE UNIV,SCH ELECT ENGN,W LAFAYETTE,IN 47907, USA. NR 13 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 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 822 EP 824 DI 10.1063/1.107756 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600030 ER PT J AU LOWNDES, DH ZHENG, XY ZHU, S BUDAI, JD WARMACK, RJ AF LOWNDES, DH ZHENG, XY ZHU, S BUDAI, JD WARMACK, RJ TI SUPPRESSION OF THE SPIRAL-GROWTH MECHANISM IN EPITAXIAL YBA2CU3O7-X FILMS GROWN ON MISCUT SUBSTRATES SO APPLIED PHYSICS LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPY; THIN-FILMS; MGO AB The growth mechanism and surface microstructures of epitaxial YBa2Cu3O7-x films are extremely sensitive to substrate miscut angle. The screw dislocation-mediated growth that is so prominent in YBa2Cu3O7-x films grown on well-aligned (001) substrates can be completely eliminated by growing YBa2Cu3O7-x on a substrate that is miscut only 2-degrees-3-degrees away from (001). Films grown on miscut near-(001) LaAlO3 and SrTiO3 substrates consist of overlapping tilted platelets, one c-axis unit cell thick, that are epitaxially aligned with the underlying crystal lattice. This morphology, and the absence of screw-growth features, persists even in relatively thick (approximately 200 nm) films. The dominance of miscut-aligned growth is explained by the large number of surface steps that act as both nucleation and rapid-growth sites on a miscut surface. C1 UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. RP LOWNDES, DH (reprint author), OAK RIDGE NATL LAB,DIV SOLID STATE,POB 2008,OAK RIDGE,TN 37831, USA. RI Budai, John/R-9276-2016 OI Budai, John/0000-0002-7444-1306 NR 14 TC 52 Z9 53 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 852 EP 854 DI 10.1063/1.107766 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600040 ER PT J AU EKIN, JW FINNEMORE, DK LI, Q TENBRINK, J CARTER, W AF EKIN, JW FINNEMORE, DK LI, Q TENBRINK, J CARTER, W TI EFFECT OF AXIAL STRAIN ON THE CRITICAL CURRENT OF AG-SHEATHED BIBASED SUPERCONDUCTORS IN MAGNETIC-FIELDS UP TO 25-T SO APPLIED PHYSICS LETTERS LA English DT Article ID WIRES AB The irreversible strain limit epsilon(irrev) for the onset of permanent axial strain damage to Ag-sheathed Bi2Sr2Ca1Cu2O8+x and Bi2Sr2Ca2Cu3010+x superconductors has been measured to be in the range of 0.2%-0.35%. This strain damage onset is about an order of magnitude higher than for bulk sintered Y-, Bi-, or Tl-based superconductors and is approaching practical values for magnet design. The measurements show that the value of epsilon(irrev) is not dependent on magnetic field, nor does the critical current depend on strain below epsilon(irrev) at least up to 25 T at 4.2 K. Both of these factors indicate that the observed strain effect in Ag-sheathed Bi-based superconductors is not intrinsic to the superconductor material. Rather, the effect is extrinsic and arises from superconductor fracture. Thus, the damage onset is amenable to further enhancement. Indeed, the data suggest that subdividing the superconductor into fine filaments or adding Ag to the superconductor powder prior to processing significantly enhances the damage threshold epsilon(irrev) to above 0.6%. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. VACUUMSCHMELZE GMBH,HANAU,GERMANY. AMER SUPERCONDUCTOR CORP,WATERTOWN,MA 02172. BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973. RP EKIN, JW (reprint author), NATL INST STAND & TECHNOL,DIV ELECTROMAGNET TECHNOL,BOULDER,CO 80303, USA. NR 12 TC 136 Z9 136 U1 0 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 858 EP 860 DI 10.1063/1.107768 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600042 ER PT J AU BRYANT, PH CARROLL, TL PECORA, LM RACHFORD, FJ AF BRYANT, PH CARROLL, TL PECORA, LM RACHFORD, FJ TI SUBSATURATION FERROMAGNETIC-RESONANCE IN YTTRIUM-IRON-GARNET SPHERES SO APPLIED PHYSICS LETTERS LA English DT Article AB Experimental data is presented for ferromagnetic resonance in an yttrium iron garnet sphere slightly below the threshold field for saturation. It is found that significantly different behavior occurs depending on whether the dc field is aligned with the [111], [100], or [110] axes of the crystal. Explanations are proposed to account for the observed behavior, which in the [100] and [110] cases involve the formation of macroscopic magnetization patterns. These two cases also exhibit frequency reversal below threshold, in which the frequency is observed to increase as the field is decreased. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. USN,RES LAB,WASHINGTON,DC 20375. RP BRYANT, PH (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. OI Carroll, Thomas/0000-0002-2371-2049 NR 7 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 17 PY 1992 VL 61 IS 7 BP 864 EP 866 DI 10.1063/1.107771 PG 3 WC Physics, Applied SC Physics GA JJ366 UT WOS:A1992JJ36600044 ER PT J AU LYON, WS AF LYON, WS TI SAMPLE ANALYSIS - REALISM VS RELIGION SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS LA English DT Editorial Material RP LYON, WS (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH LE JI J. Radioanal. Nucl. Chem.-Lett. PD AUG 17 PY 1992 VL 165 IS 6 BP 331 EP 335 DI 10.1007/BF02164425 PG 5 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA JL386 UT WOS:A1992JL38600001 ER PT J AU CONDE, H OLSSON, N RAMSTROM, E RONNQVIST, T ZORRO, R BLOMGREN, J HAKANSSON, A TIBELL, G JONSSON, O NILSSON, L RENBERG, PU OSTERLUND, M UNKELBACH, W WAMBACH, J VANDERWERF, SY ULLMANN, J WENDER, SA AF CONDE, H OLSSON, N RAMSTROM, E RONNQVIST, T ZORRO, R BLOMGREN, J HAKANSSON, A TIBELL, G JONSSON, O NILSSON, L RENBERG, PU OSTERLUND, M UNKELBACH, W WAMBACH, J VANDERWERF, SY ULLMANN, J WENDER, SA TI THE ZR-90(N, P)Y-90 REACTION AT E(N) = 98 MEV SO NUCLEAR PHYSICS A LA English DT Article DE ZR-90(N,P); E = 98 MEV; MEASURED-SIGMA(EP,THETA); Y-90 DEDUCED GAMOW-TELLER; OTHER MULTIPOLE STRENGTHS; STATISTICAL MULTISTEP DIRECT; DWBA CALCULATIONS; MULTIPOLE DECOMPOSITION; COMPARISON WITH RPA-DWIA CALCULATIONS ID GAMOW-TELLER STRENGTH; ISOVECTOR GIANT-RESONANCES; PREEQUILIBRIUM NEUTRON EMISSION; NUCLEON-NUCLEON INTERACTION; CHARGE-EXCHANGE; CROSS-SECTIONS; INTERMEDIATE ENERGIES; STATISTICAL-THEORY; P,N REACTIONS; BETA-DECAY AB Double-differential cross sections of the Zr-90(n, p) reaction have been measured at 98 MeV in the angular range 0-degrees-30-degrees for excitation energies up to 40 MeV. The spectra have been interpreted in terms of direct and multistep reactions. The contributions from the latter have been calculated using a statistical theory of multistep direct reactions. The direct parts of the spectra have been decomposed into their different multipole components by using peak-fitting and multipole-decomposition techniques, based on sample angular distributions calculated within the distorted-wave Born approximation. An extensive microscopic calculation based on the random-phase approximation has also been performed and the results are compared with the experimental data. A value S(beta)+ = 1.7 +/- 0.2 is extracted for the Gamow-Teller strength, suggesting an occupancy nu-2 = 0.09 +/- 0.01 for the 1g9/2 proton orbital. This value has been compared with recent results from (d, He-3) proton pickup and (e, e'p) knockout reactions. C1 UNIV UPPSALA, DEPT NEUTRON RES, BOX 535, S-75122 UPPSALA, SWEDEN. UNIV UPPSALA, DEPT RADIAT SCI, S-75122 UPPSALA, SWEDEN. UNIV UPPSALA, SVEDBERG LAB, S-75121 UPPSALA, SWEDEN. UNIV LUND, DEPT PHYS, S-22362 LUND, SWEDEN. FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST KERNPHYS, W-5170 JULICH 1, GERMANY. KERNFYS VERSNELLER INST, 9747 AA GRONINGEN, NETHERLANDS. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. NR 89 TC 23 Z9 23 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 17 PY 1992 VL 545 IS 4 BP 785 EP 821 DI 10.1016/0375-9474(92)90530-W PG 37 WC Physics, Nuclear SC Physics GA JL433 UT WOS:A1992JL43300002 ER PT J AU APFELDORF, KM AF APFELDORF, KM TI HAMILTONIAN REDUCTION ON THE WEIGHT LATTICE SO NUCLEAR PHYSICS B LA English DT Article ID EXTENDED VIRASORO ALGEBRAS; CONFORMAL FIELD-THEORIES; QUANTUM GROUP-STRUCTURE; ZUMINO-WITTEN MODEL; KAC-MOODY ALGEBRAS; OPERATOR ALGEBRA; COADJOINT ORBITS; KP HIERARCHY; REPRESENTATIONS; GRAVITY AB Quantum hamiltonian reduction for co-adjoint orbits of affine algebras is considered. We investigate in detail new quantum hamiltonian reductions of sl(3) current algebras which yield twisted versions of W3(2). We discuss all Possible quantum reductions of sl(3) current algebras in which twisting terms from the Sugawara tensor are specific by vectors on the weight lattice of sl(3). Some comments are also given on sl(n) (n greater-than-or-equal-to 4) cases reduced in a similar way. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. RP APFELDORF, KM (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 36 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 17 PY 1992 VL 381 IS 1-2 BP 431 EP 447 DI 10.1016/0550-3213(92)90655-U PG 17 WC Physics, Particles & Fields SC Physics GA JK127 UT WOS:A1992JK12700018 ER PT J AU CREUTZ, M AF CREUTZ, M TI MICROCANONICAL CLUSTER MONTE-CARLO SIMULATION SO PHYSICAL REVIEW LETTERS LA English DT Article ID 3-DIMENSIONAL ISING-MODEL AB I propose a numerical simulation algorithm for statistical systems which combines a microcanonical transfer of energy with global changes in clusters of spins. The advantages of the cluster approach near a critical point augment the speed increases associated with multispin coding in the microcanonical approach. The method also provides a limited ability to tune the average cluster size. RP CREUTZ, M (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 17 TC 21 Z9 21 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 17 PY 1992 VL 69 IS 7 BP 1002 EP 1005 DI 10.1103/PhysRevLett.69.1002 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000002 ER PT J AU BECKERSZENDY, R BRATTON, CB CASPER, D DYE, ST GAJEWSKI, W GOLDHABER, M HAINES, TJ HALVERSON, PG JONES, T KIELCZEWSKA, D KROPP, WR LEARNED, JG LOSECCO, J MCGRATH, G MCGREW, C MATTHEWS, J MATSUNO, S MILLER, RS MUDAN, MS PRICE, L REINES, F SCHULTZ, J SINCLAIR, D SOBEL, HW STONE, J SULAK, LR SVOBODA, R VANDERVELDE, J AF BECKERSZENDY, R BRATTON, CB CASPER, D DYE, ST GAJEWSKI, W GOLDHABER, M HAINES, TJ HALVERSON, PG JONES, T KIELCZEWSKA, D KROPP, WR LEARNED, JG LOSECCO, J MCGRATH, G MCGREW, C MATTHEWS, J MATSUNO, S MILLER, RS MUDAN, MS PRICE, L REINES, F SCHULTZ, J SINCLAIR, D SOBEL, HW STONE, J SULAK, LR SVOBODA, R VANDERVELDE, J TI SEARCH FOR MUON NEUTRINO OSCILLATIONS WITH THE IRVINE-MICHIGAN-BROOKHAVEN DETECTOR SO PHYSICAL REVIEW LETTERS LA English DT Article ID UNDERGROUND WATER DETECTOR; IMB-3 DETECTOR; PROTON DECAY; FLUX; PHYSICS AB Muon neutrinos produced as a result of cosmic-rav interactions with the atmosphere are used to search for nu(mu) oscillations into nu(tau) by comparing the measured rate of upward-going muons in the Irvine-Michigan-Brookhaven detector with the expected rate. In addition, the ratio of upward-going muons which stop in the detector to those which exit is used to search for deviations from the expected spectrum. This latter technique is free of flux and cross-section normalization uncertainties. No evidence for oscillations is found. 90% C.L. limits on delta-m2 are derived in the range (1-2) x 10(-4) eV2 for sin(2)2-theta > 0.5. C1 CLEVELAND STATE UNIV,CLEVELAND,OH 44115. UNIV MICHIGAN,ANN ARBOR,MI 48109. BOSTON UNIV,BOSTON,MA 02215. UNIV CALIF IRVINE,IRVINE,CA 92717. BROOKHAVEN NATL LAB,UPTON,NY 11973. UNIV MARYLAND,COLL PK,MD 20742. UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND. UNIV WARSAW,PL-00325 WARSAW,POLAND. UNIV NOTRE DAME,NOTRE DAME,IN 46556. LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. RP BECKERSZENDY, R (reprint author), UNIV HAWAII,HONOLULU,HI 96822, USA. RI Sobel, Henry/A-4369-2011; OI Matthews, James/0000-0002-1832-4420 NR 24 TC 113 Z9 113 U1 1 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 17 PY 1992 VL 69 IS 7 BP 1010 EP 1013 DI 10.1103/PhysRevLett.69.1010 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000004 ER PT J AU ADAMS, MR AID, S ANTHONY, PL BAKER, MD BARTLETT, J BHATTI, AA BRAUN, HM BUSZA, W CONRAD, JM COUTRAKON, G DAVISSON, R DERADO, I DHAWAN, SK DOUGHERTY, W DREYER, T DZIUNIKOWSKA, K ECKARDT, V ECKER, U ERDMANN, M ESKREYS, A FIGIEL, J GEBAUER, HJ GEESAMAN, DF GILMAN, R GREEN, MC HAAS, J HALLIWELL, C HANLON, J HANTKE, D HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM KAUFMAN, S KENNEDY, RD KIRK, T KOBRAK, HGE KRZYWDZINSKI, S KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MAGILL, S MALECKI, P MANZ, A MELANSON, H MICHAEL, DG MOHR, W MONTGOMERY, HE MORFIN, JG NICKERSON, RB ODAY, S OLKIEWICZ, K OSBORNE, L PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SEYERLEIN, HJ SKUJA, A SNOW, GA SOLDNERREMBOLD, S STEINBERG, PH STIER, HE STOPA, P SWANSON, RA TALAGA, R TENTINDOREPOND, S TROST, HJ VENKATARAMANIA, H VIDAL, M WILHELM, M WILKES, J WILSON, R WITTEK, W WOLBERS, SA ZHAO, T AF ADAMS, MR AID, S ANTHONY, PL BAKER, MD BARTLETT, J BHATTI, AA BRAUN, HM BUSZA, W CONRAD, JM COUTRAKON, G DAVISSON, R DERADO, I DHAWAN, SK DOUGHERTY, W DREYER, T DZIUNIKOWSKA, K ECKARDT, V ECKER, U ERDMANN, M ESKREYS, A FIGIEL, J GEBAUER, HJ GEESAMAN, DF GILMAN, R GREEN, MC HAAS, J HALLIWELL, C HANLON, J HANTKE, D HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM KAUFMAN, S KENNEDY, RD KIRK, T KOBRAK, HGE KRZYWDZINSKI, S KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MAGILL, S MALECKI, P MANZ, A MELANSON, H MICHAEL, DG MOHR, W MONTGOMERY, HE MORFIN, JG NICKERSON, RB ODAY, S OLKIEWICZ, K OSBORNE, L PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SEYERLEIN, HJ SKUJA, A SNOW, GA SOLDNERREMBOLD, S STEINBERG, PH STIER, HE STOPA, P SWANSON, RA TALAGA, R TENTINDOREPOND, S TROST, HJ VENKATARAMANIA, H VIDAL, M WILHELM, M WILKES, J WILSON, R WITTEK, W WOLBERS, SA ZHAO, T TI 1ST MEASUREMENTS OF JET PRODUCTION-RATES IN DEEP-INELASTIC LEPTON-PROTON SCATTERING SO PHYSICAL REVIEW LETTERS LA English DT Article ID LUND MONTE-CARLO; MUON SCATTERING; CROSS-SECTIONS; QCD JETS; FRAGMENTATION; HERA AB The first measurements of forward multijet rates in deep-inelastic lepton scattering are presented. Data were taken with a 490-GeV muon beam incident on a hydrogen target. The jets were defined using the JADE algorithm. The measured rates are presented as a function of the jet resolution parameter y(cut), and as a function of the virtual-photon-proton center-of-momentum energy W, in the range 13 less-than-or-equal-to W less-than-or-equal-to 33 GeV. Comparisons are made to the predictions of the Lund Monte Carlo programs, and good agreement is obtained when QCD corrections are included in the model. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. HARVARD UNIV,CAMBRIDGE,MA 02138. UNIV ILLINOIS,CHICAGO,IL 60680. STANISLAW STASZIC UNIV MIN & MET,INST NUCL PHYS,PL-30059 KRAKOW,POLAND. UNIV MARYLAND,COLL PK,MD 20742. MIT,CAMBRIDGE,MA 02139. MAX PLANCK INST PHYS & ASTROPHYS,W-8000 MUNICH 40,GERMANY. NORTHWESTERN UNIV,EVANSTON,IL 60208. UNIV WASHINGTON,SEATTLE,WA 98195. UNIV GESAMTHSCH WUPPERTAL,W-5600 WUPPERTAL 1,GERMANY. YALE UNIV,NEW HAVEN,CT 06511. RP ADAMS, MR (reprint author), UNIV FREIBURG,W-7800 FREIBURG,GERMANY. NR 25 TC 18 Z9 18 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 17 PY 1992 VL 69 IS 7 BP 1026 EP 1029 DI 10.1103/PhysRevLett.69.1026 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000008 ER PT J AU ABBOTT, T AKIBA, Y BEAVIS, D BLOOMER, MA BOND, PD CHASMAN, C CHEN, Z CHU, YY COLE, BA COSTALES, JB CRAWFORD, HJ CUMMING, JB DEBBE, R ENGELAGE, J FUNG, SY GUSHUE, S HAMAGAKI, H HANSEN, O HAYANO, RS HAYASHI, S HOMMA, S HUANG, HZ IKEDA, Y JURICIC, I KANG, J KATCOFF, S KAUFMAN, S KIMURA, K KITAMURA, K KURITA, K LEDOUX, RJ LEVINE, MJ MIAKE, Y MORSE, RJ MOSKOWITZ, B NAGAMIYA, S OLNESS, J PARSONS, CG REMSBERG, LP SAKURAI, H SARABURA, M STANKUS, P STEADMAN, SG STEPHANS, SF SUGITATE, T TANNENBAUM, MJ VANDIJK, JH VIDEBAEK, F VIENT, M VUTSADAKIS, V WEGNER, HE WOODRUFF, DS WU, YD ZAJC, WA AF ABBOTT, T AKIBA, Y BEAVIS, D BLOOMER, MA BOND, PD CHASMAN, C CHEN, Z CHU, YY COLE, BA COSTALES, JB CRAWFORD, HJ CUMMING, JB DEBBE, R ENGELAGE, J FUNG, SY GUSHUE, S HAMAGAKI, H HANSEN, O HAYANO, RS HAYASHI, S HOMMA, S HUANG, HZ IKEDA, Y JURICIC, I KANG, J KATCOFF, S KAUFMAN, S KIMURA, K KITAMURA, K KURITA, K LEDOUX, RJ LEVINE, MJ MIAKE, Y MORSE, RJ MOSKOWITZ, B NAGAMIYA, S OLNESS, J PARSONS, CG REMSBERG, LP SAKURAI, H SARABURA, M STANKUS, P STEADMAN, SG STEPHANS, SF SUGITATE, T TANNENBAUM, MJ VANDIJK, JH VIDEBAEK, F VIENT, M VUTSADAKIS, V WEGNER, HE WOODRUFF, DS WU, YD ZAJC, WA TI BOSE-EINSTEIN CORRELATIONS IN SI+AL AND SI+AU COLLISIONS AT 14.6A GEV/C SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; INTENSITY INTERFEROMETRY; NUCLEAR COLLISIONS; EMISSION AB The E802 Spectrometer at the Brookhaven Alternating Gradient Synchrotron has been used to measure the correlations in relative momentum between like-sign pions emitted in central Si+Al and Si+Au collisions at 14.6A GeV/c. Data are presented in terms of the correlation function for both identified pi- and pi+ pairs near the nucleon-nucleon center-of-mass rapidity. All parametrizations of the correlation function are consistent with a spherically symmetric source of rms radius R(rms), almost-equal-to 3.5 +/- 0.4 fm and lifetime tau is similar to 2 fm/c. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. BROOKHAVEN NATL LAB,UPTON,NY 11973. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521. COLUMBIA UNIV,NEW YORK,NY 10027. NEVIS LABS,IRVINGTON,NY 10533. HIROSHIMA UNIV,HIROSHIMA 730,JAPAN. UNIV TOKYO,INST NUCL STUDY,TANASHI,TOKYO 188,JAPAN. KYUSHU UNIV,FUKUOKA 812,JAPAN. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. MIT,CAMBRIDGE,MA 02139. UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN. RI Cumming, James/I-3358-2013; SAKURAI, HIROYOSHI/G-5085-2014; Hayano, Ryugo/F-7889-2012; HAMAGAKI, HIDEKI/G-4899-2014; OI Cumming, James/0000-0001-6930-0958; Hayano, Ryugo/0000-0002-1214-7806; Tannenbaum, Michael/0000-0002-8840-5314 NR 18 TC 39 Z9 39 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 17 PY 1992 VL 69 IS 7 BP 1030 EP 1033 DI 10.1103/PhysRevLett.69.1030 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000009 ER PT J AU KNICKELBEIN, MB MENEZES, WJC AF KNICKELBEIN, MB MENEZES, WJC TI OPTICAL-RESPONSE OF SMALL NIOBIUM CLUSTERS SO PHYSICAL REVIEW LETTERS LA English DT Article ID IONIZATION-POTENTIALS; PLASMA RESONANCES; NICKEL CLUSTERS; PHOTODISSOCIATION; PHOTOIONIZATION; DISSOCIATION; SPECTROSCOPY; COMPLEXES; ENERGIES; SPECTRA AB The optical absorption spectra of small, isolated niobium clusters from seven to twenty atoms have been measured from 334 to 614 nm via photodepletion of niobium cluster-argon van der Waals complexes, Nb(n)Ar(m), in a molecular beam. The absorption cross sections of all clusters in this size range increase with decreasing wavelength, as predicted by classical electrodynamic theory applied to small niobium spheres, however, the magnitudes of the cross sections are several times larger than predicted. RP KNICKELBEIN, MB (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 31 TC 48 Z9 48 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 17 PY 1992 VL 69 IS 7 BP 1046 EP 1049 DI 10.1103/PhysRevLett.69.1046 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000013 ER PT J AU BOROVSKY, JE AF BOROVSKY, JE TI DOUBLE-LAYERS DO ACCELERATE PARTICLES IN THE AURORAL-ZONE SO PHYSICAL REVIEW LETTERS LA English DT Article ID PARALLEL ELECTRIC-FIELDS; PAIRED ELECTROSTATIC SHOCKS; HIGH-ALTITUDE; ANOMALOUS RESISTIVITY; IONOSPHERIC IONS; DISCRETE AURORA; BOUNDARY-LAYER; DISTRIBUTIONS; MAGNETOSPHERE; ARCS AB In response to a recent report [D. A. Bryant, R. Bingham, and U. de Angelis, Phys. Rev. Lett. 68, 37 (1991)] that makes the claim that electrostatic fields are weak in the auroral zone and that electrostatic fields cannot accelerate particles, it is pointed out that the evidence for electrostatic fields in the auroral zone is overwhelming and that these electrostatic fields often are accelerating electrons to produce aurora. The literature cited in the article above as evidence against double layers (strong electric fields) is reexamined and is found not to be evidence against double layers. RP BOROVSKY, JE (reprint author), LOS ALAMOS NATL LAB,SPACE PLASMA PHYS GRP,LOS ALAMOS,NM 87545, USA. NR 68 TC 20 Z9 20 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 17 PY 1992 VL 69 IS 7 BP 1054 EP 1056 DI 10.1103/PhysRevLett.69.1054 PG 3 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000015 ER PT J AU HANFLAND, M HEMLEY, RJ MAO, HK WILLIAMS, GP AF HANFLAND, M HEMLEY, RJ MAO, HK WILLIAMS, GP TI SYNCHROTRON INFRARED-SPECTROSCOPY AT MEGABAR PRESSURES - VIBRATIONAL DYNAMICS OF HYDROGEN TO 180 GPA SO PHYSICAL REVIEW LETTERS LA English DT Article ID X-RAY-DIFFRACTION; SOLID HYDROGEN; PHASE-TRANSITION; ULTRAHIGH PRESSURES; MOLECULAR-HYDROGEN; RAMAN MEASUREMENTS; DENSE HYDROGEN; DEUTERIUM; STATE; EQUATION AB We have developed new techniques for measuring infrared spectra at megabar pressures using synchrotron radiation and applied them to study the Q1(1), Q1(1) + S1(0), and Q(R)(J) vibrational transitions of solid hydrogen to 180 GPa. The frequency difference between the Q1(1) infrared and Raman vibrons increases from 3 cm-1 (zero pressure) to 510 cm -1 (180 GPa), indicating a dramatic increase in intermolecular coupling with pressure. A negative frequency shift is observed for the infrared vibron above 140 GPa. A significant increase in frequency and LO-TO splitting of the lattice phonon is also documented. C1 CARNEGIE INST WASHINGTON,CTR HIGH PRESSURE RES,WASHINGTON,DC 20015. BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. RP HANFLAND, M (reprint author), CARNEGIE INST WASHINGTON,GEOPHYS LAB,WASHINGTON,DC 20015, USA. NR 34 TC 67 Z9 67 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 17 PY 1992 VL 69 IS 7 BP 1129 EP 1132 DI 10.1103/PhysRevLett.69.1129 PG 4 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000034 ER PT J AU JOHNSON, WR CHENG, KT AF JOHNSON, WR CHENG, KT TI COMPLETE FRAGMENTATION-PATTERN FOR 2-STEP DOUBLE PHOTOIONIZATION IN XENON - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note ID RANDOM-PHASE APPROXIMATION; PHOTO-IONIZATION; XE C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP JOHNSON, WR (reprint author), UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556, USA. NR 7 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 17 PY 1992 VL 69 IS 7 BP 1144 EP 1144 DI 10.1103/PhysRevLett.69.1144 PG 1 WC Physics, Multidisciplinary SC Physics GA JJ330 UT WOS:A1992JJ33000038 ER PT J AU MCMULLAN, RK KOETZLE, TF FRONCKOWIAK, MD AF MCMULLAN, RK KOETZLE, TF FRONCKOWIAK, MD TI STRUCTURE OF [20-CH3],[20-CD3]-METHYLPREGNENE-3,20-DIOL METHANOLATE FROM NEUTRON-DIFFRACTION AT 123-K SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Note ID CRYSTAL-STRUCTURE AB C22H33D3O2.CH3OH, M(r) = 367.59, monoclinic, P2(1), a = 13.345 (3), b = 7.729 (2), c = 10.471 (2) angstrom, beta = 101.18 (2)-degrees, V = 1059.5 (4) angstrom3, Z = 2, D(n) = 1. 152 g cm-3, lambda(n)(Be,002) = 1.0508 angstrom, mu(n) = 2.794 cm-1, F(000) = 51.93 fm, T = 123 K, R(F2) = 0.0390, wR(F2) = 0.0408, S = 1. 32 for 3826 unique reflections and 601 variable parameters, including D/H scattering lengths at six sites. The statistical distribution of D between two methyl C20 groups, derived from b(obs) (e.s.d.'s <2%), shows the chirality at C20 to be 84.0% S, 16.0% R within +/- 0.6 and +/- 1.0% as estimated from respective averages of three values in each methyl group. The C-H bond lengths of tetrahedral C atoms (uncorrected for thermal motion) have average values and sigma-values from observed distributions of 1.098 (4) angstrom for 16 methylene C-H bonds, 1.090 (4) angstrom for 12 methyl C-H(D) bonds, and 1. 105 (6) angstrom for five methine C-H bonds. The average H(D)-C-H(D) angles are 106.5 (4) and 107.8 (10)-degrees for eight methylene and 15 methyl angles, respectively. The average e.s.d.'s are 0.003 (C-H and C-D) and 0.002 angstrom (C-C and C-O) for bond lengths and 0.3 [H(D)-C-H(D)], 0.2 [C-C-H(D)] and 0.09-degrees (C-C-C) for bond angles. The H...O hydrogen-bond lengths and O-H...O angles are 1.693 (3) angstrom, 175.7 (3)-degrees; 1.756 (3) angstrom, 171.6 (3)-degrees; 1.771 (3) angstrom, 171.7 (3)-degrees. Together, the three O-H...O bonds form an infinite helical chain about the 2(1) axis at 1/2, 0. There are five distinct intermolecular H...H distances less than 2.3 angstrom, one being exceptionally short at 2.020 angstrom. C1 MED FDN BUFFALO INC,BUFFALO,NY 14204. RP MCMULLAN, RK (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 12 TC 7 Z9 7 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD AUG 15 PY 1992 VL 48 BP 1509 EP 1512 DI 10.1107/S0108270192000234 PN 8 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA JL206 UT WOS:A1992JL20600055 ER PT J AU BARTELS, DM HAN, P PERCIVAL, PW AF BARTELS, DM HAN, P PERCIVAL, PW TI DIFFUSION AND CIDEP OF H AND D ATOMS IN SOLID H2O, D2O AND ISOTOPIC MIXTURES SO CHEMICAL PHYSICS LA English DT Article ID TIME-RESOLVED CONDUCTIVITY; TRANSITION-STATE THEORY; PULSE-IONIZED ICE; HYDROGEN-ATOMS; INTERMOLECULAR FORCES; WATER RADIOLYSIS; FREE-RADICALS; POLARIZATION; MUONIUM; ELECTRONS AB Hydrogen and deuterium atoms have been studied by pulsed EPR spectroscopy in polycrystalline samples of H2O ice, D2O ice, and various isotopic mixtures. At high temperature ( - 10-degrees-C) the pattern and the time-dependence of the EPR line intensities are similar to previous results for H and D in liquid water. Chemically induced dynamic electron polarization (CIDEP) is generated in second-order atom combination reactions. The CIDEP behavior was found to change over the temperature range studied ( - 5-degrees-C to 130-degrees-C), consistent with additional contributions from spur reactions, and at lower temperatures, geminate recombination of (D...OD) radical pairs. Transverse spin relaxation times were measured by the spin-echo technique, and interpreted in terms of translational motion of free atoms diffusing through the ice lattice. One surprising result is that D atoms diffuse faster than H atoms below 200 K. This is explained as a vibrational zero point energy effect, by applying transition state theory to a model in which the diffusing atom must pass through a tight "bottleneck" in the electronic potential surface, as it passes from one minimum energy site in the lattice to the next. The H and D spin relaxation rates were successfully simulated by means of a semi-classical potential which was constructed by pairwise addition of atom-atom contributions represented by modified Buckingham potential functions. Extension of the model to include tunneling resulted in little. change to the fit of the H and D data. Although predictions of muonium diffusion rates using the same potential do not give quantitative agreement with published results from spin relaxation measurements, they do serve to illustrate the dominant effect of tunneling over a wide temperature range for that light atom. C1 SIMON FRASER UNIV,DEPT CHEM,BURNABY V5A 1S6,BC,CANADA. SIMON FRASER UNIV,TRIUNIV MESON FACIL,BURNABY V5A 1S6,BC,CANADA. RP BARTELS, DM (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. OI Percival, Paul/0000-0002-6512-128X NR 51 TC 39 Z9 39 U1 0 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD AUG 15 PY 1992 VL 164 IS 3 BP 421 EP 437 DI 10.1016/0301-0104(92)87079-O PG 17 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JH508 UT WOS:A1992JH50800009 ER PT J AU HJELM, RP WILCOXON, J THIYAGARAJAN, P ALKAN, H AF HJELM, RP WILCOXON, J THIYAGARAJAN, P ALKAN, H TI NONEQUILIBRIUM BEHAVIOR IN EGG PHOSPHATIDYLCHOLINE-BILE SALT MIXED AQUEOUS COLLOIDS SO CROATICA CHEMICA ACTA LA English DT Article ID BILIARY LIPID SYSTEMS; ANGLE NEUTRON-SCATTERING; LECITHIN; DILUTION; MICELLE AB Aqueous mixed colloids of bile salt and phosphatidylcholine have particle morphologies that are highly dependent on total lipid concentration. Starting at the highest concentrations globular mixed micelles are found. These elongate into rods with dilution, and then transform into vesicles at the lowest lipid concentrations. Little is known of the mechanism of these concentration-dependent transformations. Here, we report observations from static and dynamic light scattering on egg phosphatidylcholine-glycocholate mixtures, showing that the system passes through a series of large structures upon dilution. As the mixed colloid is diluted to concentrations close to or at the vesicle transition, a well defined structure is formed initially, which is likely to be an aggregate of mixed micelles. This structure then undergoes a series of transformations. The discovery of this structure could be an important clue in understanding the transition from rod-like to vesicle forms. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. ARGONNE NATL LAB,DIV INTENSE NEUTRON SOURCE,ARGONNE,IL 60436. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60436. UNIV ILLINOIS,DEPT PHARMACEUT,CHICAGO,IL 60680. RP HJELM, RP (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545, USA. RI Lujan Center, LANL/G-4896-2012 NR 15 TC 0 Z9 0 U1 0 U2 0 PU CROATIAN CHEMICAL SOC PI ZAGREB PA MARULICEV TRG 19/II, 41001 ZAGREB, CROATIA SN 0011-1643 J9 CROAT CHEM ACTA JI Croat. Chem. Acta PD AUG 15 PY 1992 VL 65 IS 2 BP 367 EP 377 PG 11 WC Chemistry, Multidisciplinary SC Chemistry GA JP458 UT WOS:A1992JP45800013 ER PT J AU MCLAUGHLIN, SB TJOELKER, MJ AF MCLAUGHLIN, SB TJOELKER, MJ TI GROWTH AND PHYSIOLOGICAL-CHANGES IN RED SPRUCE SAPLINGS ASSOCIATED WITH ACIDIC DEPOSITION AT HIGH ELEVATIONS IN THE SOUTHERN APPALACHIANS, USA SO FOREST ECOLOGY AND MANAGEMENT LA English DT Article; Proceedings Paper CT INTERNATIONAL CONF ON ACIDIC DEPOSITION, ITS NATURE AND IMPACTS : ATMOSPHERIC POLLUTION AND FORESTS CY SEP 16-21, 1990 CL GLASGOW, SCOTLAND SP USDA, FOREST SERV, UK FORESTRY COMMISS ID SEASONAL PATTERNS; SMOKY MOUNTAINS; TREE SEEDLINGS; 2 ELEVATIONS; ALUMINUM; DECLINE; FORESTS AB Exploratory field studies to evaluate the physiological basis of growth decline of red spruce at high elevation sites in the southern Appalachian Mountains have detected decreasing ratios of net photosynthesis (Ps) to dark respiration (Rs) associated with decreasing foliar calcium and increasing aluminium at higher elevation sites. A role of acidic deposition in inducing or amplifying the effects of nutrient deficiency in these high elevation soils had been previously inferred from changing growth and wood chemistry trends of mature trees, high levels of atmospheric deposition, and high ratios of aluminium to calcium in soil solutions at the study site. Greenhouse studies using native soils from the study area have confirmed the capacity of acid rain and mist, in the range of levels occurring at these sites, to produce similar alterations in both growth and physiology of red spruce saplings. This paper discusses the corroborative evidence of acid deposition effects on carbon metabolism and growth based on the combined field and laboratory studies. The importance of soil nutrition and duration of acid deposition treatment is illustrated by time-course measurements of red spruce photosynthesis and dark respiration in laboratory studies. C1 UNIV WISCONSIN,SCH FORESTRY,MADISON,WI 53706. RP MCLAUGHLIN, SB (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN, USA. RI Tjoelker, Mark/M-2413-2016 OI Tjoelker, Mark/0000-0003-4607-5238 NR 23 TC 13 Z9 13 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1127 J9 FOREST ECOL MANAG JI For. Ecol. Manage. PD AUG 15 PY 1992 VL 51 IS 1-3 BP 43 EP 51 DI 10.1016/0378-1127(92)90470-T PG 9 WC Forestry SC Forestry GA JP766 UT WOS:A1992JP76600005 ER PT J AU INGBER, MS HAILEY, CE AF INGBER, MS HAILEY, CE TI NUMERICAL MODELING OF CAVITIES ON AXISYMMETRICAL BODIES AT ZERO AND NONZERO ANGLE OF ATTACK SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS LA English DT Article DE CAVITATION FLOW; CAVITY CLOSURE MODEL; DRAG ON CAVITATING BODIES; BOUNDARY ELEMENT METHOD AB The flow about submerged, fully cavitating axisymmetric bodies at both zero and non-zero angle of attack is considered in this paper. A cavity closure model that relates the point of detachment, the angle that the separating streamline makes with the body and the cavity length is described. The direct boundary element method is used to solve the potential flow problem and to determine the cavity shape. A momentum integral boundary layer solver is included in the formulation so that shear stresses can be incorporated into the drag calculations. The numerical predictions based on the proposed closure model are compared with water tunnel measurements and photographs. C1 SANDIA NATL LABS,DEPT AERODYNAM,ALBUQUERQUE,NM 87185. RP INGBER, MS (reprint author), UNIV NEW MEXICO,DEPT MECH ENGN,ALBUQUERQUE,NM 87131, USA. NR 27 TC 2 Z9 9 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0271-2091 J9 INT J NUMER METH FL JI Int. J. Numer. Methods Fluids PD AUG 15 PY 1992 VL 15 IS 3 BP 251 EP 271 DI 10.1002/fld.1650150302 PG 21 WC Computer Science, Interdisciplinary Applications; Mathematics, Interdisciplinary Applications; Mechanics; Physics, Fluids & Plasmas SC Computer Science; Mathematics; Mechanics; Physics GA JG305 UT WOS:A1992JG30500001 ER PT J AU CHIN, P DAZEVEDO, EF FORSYTH, PA TANG, WP AF CHIN, P DAZEVEDO, EF FORSYTH, PA TANG, WP TI PRECONDITIONED CONJUGATE-GRADIENT METHODS FOR THE INCOMPRESSIBLE NAVIER-STOKES EQUATIONS SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS LA English DT Article DE NAVIER-STOKES; ILU(L); PRECONDITIONED CONJUGATE GRADIENT ID FLOW CALCULATIONS; ITERATIVE METHODS; SYSTEMS; SOLVER AB A robust technique for solving primitive variable formulations of the incompressible Navier-Stokes equations is to use Newton iteration for the fully implicit non-linear equations. A direct sparse matrix method can be used to solve the Jacobian but is costly for large problems; an alternative is to use an iterative matrix method. This paper investigates effective ways of using a conjugate-gradient-type method with an incomplete LU factorization preconditioner for two-dimensional incompressible viscous flow problems. Special attention is paid to the ordering of unknowns, with emphasis on a minimum updating matrix (MUM) ordering. Numerical results are given for several test problems. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37830. RP CHIN, P (reprint author), UNIV WATERLOO,DEPT COMP SCI,WATERLOO N2L 3G1,ONTARIO,CANADA. NR 26 TC 27 Z9 27 U1 0 U2 2 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0271-2091 J9 INT J NUMER METH FL JI Int. J. Numer. Methods Fluids PD AUG 15 PY 1992 VL 15 IS 3 BP 273 EP 295 DI 10.1002/fld.1650150303 PG 23 WC Computer Science, Interdisciplinary Applications; Mathematics, Interdisciplinary Applications; Mechanics; Physics, Fluids & Plasmas SC Computer Science; Mathematics; Mechanics; Physics GA JG305 UT WOS:A1992JG30500002 ER PT J AU COOK, BA HARRINGA, JL HAN, SH BEAUDRY, BJ AF COOK, BA HARRINGA, JL HAN, SH BEAUDRY, BJ TI PARASITIC EFFECTS OF OXYGEN ON THE THERMOELECTRIC PROPERTIES OF SI80GE20 DOPED WITH GAP AND P SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SILICON; ALLOYS; GERMANIUM; GE AB The presence of oxygen in silicon-germanium can have a significant effect on the sintering, microstructural, and transport properties of these alloys. A neutron activation study was performed to follow the total oxygen content during the preparation of mechanically alloyed n-type Si-20 at. % Ge alloys using either fine powders, polycrystalline Czochralski chunk, or single-crystal float zoned starting materials. The alloys were prepared with a nominal composition of Si0.747Ge0.187(GaP)0.016P0.034. The total oxygen concentration was measured in the starting materials, after 6 h of mechanical alloying in a helium environment, after hot pressing, and after a 3 h, 1100-degrees-C heat treatment in fused silica ampoules. Alloys that contained oxygen levels in excess of 2.0 at. % exhibited low carrier mobility and low thermal conductivity, whereas those that contained less than 0.6 at. % oxygen possessed high mobility and thermal conductivity. The microstructure, as observed by optical metallography and scanning electron microscopy, was found to differ greatly with oxygen content as the low oxygen alloys showed relatively large, well-defined grains and the high oxygen alloys showed evidence of poor sintering and limited grain growth. RP COOK, BA (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 24 TC 13 Z9 13 U1 1 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1992 VL 72 IS 4 BP 1423 EP 1428 DI 10.1063/1.351702 PG 6 WC Physics, Applied SC Physics GA JJ226 UT WOS:A1992JJ22600032 ER PT J AU LUSH, GB MACMILLAN, HF KEYES, BM LEVI, DH MELLOCH, MR AHRENKIEL, RK LUNDSTROM, MS AF LUSH, GB MACMILLAN, HF KEYES, BM LEVI, DH MELLOCH, MR AHRENKIEL, RK LUNDSTROM, MS TI A STUDY OF MINORITY-CARRIER LIFETIME VERSUS DOPING CONCENTRATION IN NORMAL-TYPE GAAS GROWN BY METALORGANIC CHEMICAL VAPOR-DEPOSITION SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SURFACE-FREE GAAS; DOUBLE HETEROSTRUCTURES; AUGER RECOMBINATION; QUANTUM EFFICIENCY; RADIATIVE LIFETIME; GAP SEMICONDUCTORS; EPITAXIAL GAAS; ABSORPTION; TRANSPORT; LAYERS AB Time-resolved photoluminescence decay measurements are used to explore minority carrier recombination in n-type GaAs grown by metalorganic chemical vapor deposition, and doped with selenium to produce electron concentrations from 1.3 X 10(17) cm-3 to 3.8 X 10(18) cm-3. For electron densities n0 < 10(18) cm-3, the lifetime is found to be controlled by radiative recombination and photon recycling with no evidence of Shockley-Read-Hall recombination. For higher electron densities, samples show evidence of Shockley-Read-Hall recombination as reflected in the intensity dependence of the photoluminescence decay. Still, we find that radiative recombination and photon recycling are important for all electron concentrations studied, and no evidence for Auger recombination was observed. C1 VARIAN RES CTR,PALO ALTO,CA 94303. NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. RP LUSH, GB (reprint author), PURDUE UNIV,SCH ELECT ENGN,W LAFAYETTE,IN 47901, USA. NR 33 TC 38 Z9 38 U1 0 U2 12 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1992 VL 72 IS 4 BP 1436 EP 1442 DI 10.1063/1.351704 PG 7 WC Physics, Applied SC Physics GA JJ226 UT WOS:A1992JJ22600034 ER PT J AU KLEINSCHMIDT, PD LAU, KH HILDENBRAND, DL AF KLEINSCHMIDT, PD LAU, KH HILDENBRAND, DL TI SUBLIMATION STUDIES OF NPO2F2 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DECOMPOSITION AB Using Knudsen effusion mass spectrometry, we have identified the following reaction as the sublimation decomposition mechanism of NPO2F2 (s): 2NpO2F2 (S) = NPO2 (S) + O2 (g) + NpF4(g). From second-law analysis of the measured pressures of NpF4(g) over the temperature range 820-985 K the derived enthalpy change at 298 K is 556.8 +/- 12.2 kJ/mol and the entropy change is 342.4 +/- 13.8 J/K mol. From these values and enthalpies of formation and entropies reported in the literature for the other species we calculate the enthalpy of formation of NPO2F2(S) to be - 1608 +/- 10 kJ/mol and the entropy to be 147 +/- 9 J/K mol. C1 SRI INT,MENLO PK,CA 94025. RP KLEINSCHMIDT, PD (reprint author), LOS ALAMOS NATL LAB,DIV NUCL MAT TECHNOL,LOS ALAMOS,NM 87545, USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2417 EP 2421 DI 10.1063/1.463080 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100025 ER PT J AU SEIDEMAN, T MILLER, WH AF SEIDEMAN, T MILLER, WH TI QUANTUM-MECHANICAL REACTION PROBABILITIES VIA A DISCRETE VARIABLE REPRESENTATION-ABSORBING BOUNDARY-CONDITION GREEN-FUNCTION SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID TRANSITION-STATE THEORY; THERMAL RATE CONSTANTS; MICROCANONICAL RATE CONSTANTS; BENCHMARK CALCULATIONS; BIMOLECULAR REACTIONS; SCATTERING-THEORY; SYSTEMS; APPROXIMATION; MOLECULES; EQUATIONS AB The use of a discrete variable representation (DVR) and absorbing boundary conditions (ABC) to construct the outgoing Green's function G(E+) = lim(epsilon --> 0) (E + i-epsilon - H) - 1, and its subsequent use to determine the cumulative reaction probability for a chemical reaction, bas been extended beyond our previous work [J. Chem. Phys. 96, 4412 (1992)] in several significant ways. In particular, the present paper gives a more thorough derivation and analysis of the DVR-ABC approach, shows how the same DVR-ABC Green's function can be used to obtain state-to-state (as well as cumulative) reaction probabilities, derives a DVR for the exact, multidimensional Watson Hamiltonian (referenced to a transition state), and presents illustrative calculations for the three-dimensional H + H-2 reaction with zero total angular momentum. C1 LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. RP SEIDEMAN, T (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 70 TC 228 Z9 228 U1 1 U2 18 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2499 EP 2514 DI 10.1063/1.463088 PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100033 ER PT J AU COVINSKY, MH SUITS, AG DAVIS, HF LEE, YT AF COVINSKY, MH SUITS, AG DAVIS, HF LEE, YT TI THE REACTION DYNAMICS OF SODIUM WITH OZONE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID RESONANCE-ABSORPTION SPECTROSCOPY; ABSOLUTE RATE CONSTANTS; ATOMIC SODIUM; NITROUS-OXIDE; KINETICS; NAO; CHEMISTRY; EMISSION; ATMOSPHERE; EXCITATION AB The reaction of sodium atoms (Na) with ozone (O3) has been studied using crossed molecular beams at a collision energy of 18 kcal/mole. The only product observed was NaO. The reaction occurs via an electron-transfer mechanism that yields NaO which is forward scattered with respect to the sodium beam. The translational energy distribution peaks near the forward stripping limit but extends out to the maximum allowed by energy conservation. The fragmentation ratio of NaO upon electron bombardment ionization I(NaO+)/[I(NaO+) +I(Na+)] as a function of product translational energy has been measured for an electron energy of 200 V. C1 LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. RP COVINSKY, MH (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. RI Lee, Yuan-Tseh/F-7914-2012 NR 41 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 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2515 EP 2521 DI 10.1063/1.463089 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100034 ER PT J AU PHILLPOT, SR RICKMAN, JM AF PHILLPOT, SR RICKMAN, JM TI SIMULATED QUENCHING TO THE ZERO-TEMPERATURE LIMIT OF THE GRAND-CANONICAL ENSEMBLE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SITE GRAIN-BOUNDARIES; 100 TWIST BOUNDARIES; MOLECULAR-DYNAMICS; CALCULATED ENERGY; COINCIDENT AB A formalism for obtaining the zero-temperature structure of monocomponent solids in the grand-canonical ensemble is developed. The new methodology, grand-canonical simulated quenching, is validated by simulating systems initially containing a vacancy and an interstitial. As a first application, the reconstruction of a high-angle twist grain boundary in fcc Cu is investigated. RP ARGONNE NATL LAB, DEPT MAT SCI, ARGONNE, IL 60439 USA. RI Phillpot, Simon/J-9117-2012; OI Phillpot, Simon/0000-0002-7774-6535 NR 21 TC 10 Z9 10 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2651 EP 2658 DI 10.1063/1.463053 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100051 ER PT J AU DANG, LX AF DANG, LX TI THE NONADDITIVE INTERMOLECULAR POTENTIAL FOR WATER REVISED SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-DYNAMICS; POLARIZABILITY AB The results of an improved version of a nonadditive intermolecular model for water that explicitly includes the nonadditive polarization energy are reported. The original polarizable water potential model (POL1), upon which the improved version is based, was developed by Caldwell, Dang, and Kollman [J. Am. Soc. Chem. 112, 9144 (1990)]. To improve the POL1 model, we developed a new set of atomic polarizabilities that reproduce the experimental molecular polarizability for water using the atom-dipole interaction model (Applequist, Carl, and Fung [J. Am. Soc. Chem. 94, 2952 (1972)]). Using the new atomic polarizabilities, we optimized the Lennard-Jones parameters for O-O interactions to improve the model. As expected, the new model has improved the radial distribution functions and the average potential energy for liquid water as well as the density and the average total dipole moment. The model is then used to compute the binding energies of Cs+-water clusters. Without the need for three-body forces (ion-water-water interaction), the agreement between the results of molecular-dynamics simulations and experimental energies of cluster formation is very good. RP DANG, LX (reprint author), PACIFIC NW LAB, MOLEC SCI RES CTR, POB 999, RICHLAND, WA 99352 USA. NR 11 TC 232 Z9 232 U1 1 U2 10 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2659 EP 2660 DI 10.1063/1.463054 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100052 ER PT J AU BLANDER, M BIERWAGEN, E CALKINS, KG CURTISS, LA PRICE, DL SABOUNGI, ML AF BLANDER, M BIERWAGEN, E CALKINS, KG CURTISS, LA PRICE, DL SABOUNGI, ML TI STRUCTURE OF ACIDIC HALOALUMINATE MELTS - NEUTRON-DIFFRACTION AND QUANTUM CHEMICAL CALCULATIONS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID INFRARED-EMISSION SPECTRA; BINARY MOLTEN-SALTS; MOLECULAR-DYNAMICS; ALCL3-NACL MELTS; BASIS SET; TETRACHLOROALUMINATE; EQUILIBRIA; MIXTURES; ALLOYS; MAX4 AB The structure of molten mixtures of (KX)y(AlX3)1-y was investigated by neutron diffraction for X=Cl and Br and y=0.25 and 0.33. These melts, known as acidic haloaluminates, contain different ionic species such as AlX4-, Al2X7- , Al3X10- . The diffraction patterns were similar, although not identical, for the same halide pairs and showed features indicative of short-range and intermediate-range order. Quantum chemical calculations were carried out on AlX4-, Al2X7- , and Al3X10- to provide information needed to interpret the structural results within the framework of the random packing of structural units model. It is shown that the bent Al-X-Al bridge for Al2X7-, obtained from the quantum chemical calculations, is necessary to represent well the structure, and that the values of the bond angles at the central halide atoms are around 110-degrees. Aluminum atoms are found to be tetrahedrally coordinated by the halide atoms, and information on the orientational correlations of neighboring Al2X7- is derived. RP BLANDER, M (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Price, David Long/A-8468-2013; Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 38 TC 50 Z9 50 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1992 VL 97 IS 4 BP 2733 EP 2741 DI 10.1063/1.463063 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JJ411 UT WOS:A1992JJ41100062 ER PT J AU RUBEN, GC PEKALA, RW TILLOTSON, TM HRUBESH, LW AF RUBEN, GC PEKALA, RW TILLOTSON, TM HRUBESH, LW TI IMAGING AEROGELS AT THE MOLECULAR-LEVEL SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID ORGANIC AEROGELS; SILICA AEROGELS; FORMALDEHYDE; RESORCINOL AB Aerogels are a special class of open-cell foams that have an ultrafine cell/pore size ( < 50 nm), high surface area (400-1000 m2 g-1), and an ultrastructure composed of interconnected colloidal-like particles or polymeric chains with characteristic dimensions of 10 nm. The purpose of this paper is to directly image a series of resorcinol-formaldehyde (R F) and silica aerogels by high resolution transmission electron microscopy (HRTEM). A new vertical replication technique allows us to examine aerogels at the molecular level in situ so that differences in polymeric and colloidal aerogels can be visualized. Such information is crucial for nano-engineering the structure and properties of these novel materials. C1 LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550. RP RUBEN, GC (reprint author), DARTMOUTH COLL,DEPT BIOL SCI,HANOVER,NH 03755, USA. NR 29 TC 60 Z9 61 U1 2 U2 10 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 1992 VL 27 IS 16 BP 4341 EP 4349 DI 10.1007/BF00541564 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA JJ210 UT WOS:A1992JJ21000013 ER PT J AU SALEM, JA CHOI, SR FREEDMAN, MR JENKINS, MG AF SALEM, JA CHOI, SR FREEDMAN, MR JENKINS, MG TI MECHANICAL-BEHAVIOR AND FAILURE PHENOMENON OF AN INSITU TOUGHENED SILICON-NITRIDE SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID FRACTURE-TOUGHNESS; STRENGTH AB The Weibull modulus, fracture toughness and crack-growth resistance of an in situ toughened, silicon nitride material used to manufacture a turbine combustor were determined from room temperature to 1371-degrees-C. The material exhibited an elongated grain structure that resulted in improved fracture toughness, non-linear crack-growth resistance, and good elevated-temperature strength. However, low-temperature strength was limited by grains of excessive length (30-100-mu-m), These excessively long grains were surrounded by regions rich in sintering additives. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. RP SALEM, JA (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 18 TC 16 Z9 16 U1 1 U2 5 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 1992 VL 27 IS 16 BP 4421 EP 4428 DI 10.1007/BF00541575 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA JJ210 UT WOS:A1992JJ21000024 ER PT J AU KARASEK, KR GORETTA, KC HELBERG, DA ROUTBORT, JL AF KARASEK, KR GORETTA, KC HELBERG, DA ROUTBORT, JL TI EROSION IN BISMALEIMIDE POLYMERS AND BISMALEIMIDE POLYMER COMPOSITES SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID SOLID-PARTICLE EROSION C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP KARASEK, KR (reprint author), ALLIED SIGNAL INC,DES PLAINES,IL 60017, USA. NR 8 TC 27 Z9 27 U1 0 U2 1 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD AUG 15 PY 1992 VL 11 IS 16 BP 1143 EP 1144 DI 10.1007/BF00730858 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA JJ211 UT WOS:A1992JJ21100021 ER PT J AU HAYANO, H PELLEGRIN, JL SMITH, S WILLIAMS, S AF HAYANO, H PELLEGRIN, JL SMITH, S WILLIAMS, S TI HIGH-RESOLUTION BPM FOR FFTB SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB The beam position monitor (BPM) for the final focus test beam (FFTB) is newly designed to have 1-mu-m precision and repeatability within 500-mu-m from center. The system design and the performance test of the prototype electronics are described. C1 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. RP HAYANO, H (reprint author), NATL LAB HIGH ENERGY PHYS,OHO 1-1,TSUKUBA,IBARAKI 305,JAPAN. NR 3 TC 3 Z9 3 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 47 EP 52 DI 10.1016/0168-9002(92)90768-Y PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200008 ER PT J AU ATAC, M PARK, J CLINE, D CHRISMAN, D PETROFF, MD BIRD, F FENKER, H MORGAN, K THOMAS, J BAUMBAUGH, B KELLY, M WARCHOL, J RUCHTI, R ABBOTT, B DAVIES, R KOLTICK, D AF ATAC, M PARK, J CLINE, D CHRISMAN, D PETROFF, MD BIRD, F FENKER, H MORGAN, K THOMAS, J BAUMBAUGH, B KELLY, M WARCHOL, J RUCHTI, R ABBOTT, B DAVIES, R KOLTICK, D TI TRACKING WITH SCINTILLATING FIBERS AND VISIBLE-LIGHT PHOTON COUNTERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID STATE AB A fiber tracking system was constructed at UCLA, consisting of four layers of scintillating fiber ribbons coupled to visible light photon counters (VLPCs), and was tested by measuring cosmic ray tracks. The total length of the fiber array is 7 m: 4 m of scintillating fiber and 3 m of clear optical fiber, 0.83 mm diameter. An average number of 6 photoelectrons were detected by the VLPCs, 7 m from the cosmic ray interaction point at the end of the fibers. The details of the experimental arrangement and the test results are presented. C1 SUPERCONDUCTING SUPERCOLLIDER LAB,DALLAS,TX. ROCKWELL INT CORP,CTR SCI,ANAHEIM,CA 92803. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV NOTRE DAME,NOTRE DAME,IN 46556. PURDUE UNIV,W LAFAYETTE,IN 47907. RP ATAC, M (reprint author), UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024, USA. NR 4 TC 26 Z9 26 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 155 EP 160 DI 10.1016/0168-9002(92)90774-X PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200014 ER PT J AU AMBATS, I DAWSON, J DERRICK, M MAGILL, S MUSGRAVE, B REPOND, J SCHLERETH, J STANEK, R SUGANO, K TALAGA, R AF AMBATS, I DAWSON, J DERRICK, M MAGILL, S MUSGRAVE, B REPOND, J SCHLERETH, J STANEK, R SUGANO, K TALAGA, R TI COSMIC-RAY TESTS OF THE ZEUS BARREL CALORIMETER MODULES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB The ZEUS barrel calorimeter consists of 32 wedge-shaped modules constructed using alternate layers of depleted uranium and scintillator with one radiation length sampling. In this paper we summarize tests made on 22 of these modules by measuring their response to hardened cosmic rays. We describe the cosmic ray facility, the data taking, the track reconstruction, the data analysis, and the module testing. These tests include the uniformity, both tower-to-tower and module-to-module, in the response to minimum ionizing particles, the mapping of this response as a function of lateral position of the particles inside a given tower, and the measurement of the number of photoelectrons produced by a minimum ionizing particle. In addition, we present data on the stability of the current in the photomultiplier tube generated by the natural radioactivity of the uranium. RP AMBATS, I (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 16 TC 5 Z9 5 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 161 EP 176 DI 10.1016/0168-9002(92)90775-Y PG 16 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200015 ER PT J AU WANG, YX GODFREY, G AF WANG, YX GODFREY, G TI STUDY OF DIMETHYL ETHER FOR LIMITED STREAMER TUBES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID DRIFT-CHAMBER GAS; WIRE CHAMBERS AB Position resolution and lifetime have been studied for one-atmosphere DME in half-inch diameter aluminum tube chambers operated in the limited streamer mode. The radial resolution was measured by timing to be sigma(r) = 73-mu-m. The longitudinal resolution was measured by charge division to be < 0.3% of the wire length. No significant gain changes were seen after 12 C/cm. C1 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP WANG, YX (reprint author), STANFORD UNIV,UNIV CALIF INTERCAMPUS INST RES PARTICLE ACCELERATORS,STANFORD,CA 94309, 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 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD AUG 15 PY 1992 VL 320 IS 1-2 BP 238 EP 242 DI 10.1016/0168-9002(92)90781-X PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200021 ER PT J AU ANDERSEN, E BARNES, PD BLAES, R BRAUN, H BROM, JM CHERNEY, M COHLER, M DELACRUZ, B DIEBOLD, GE DULNY, B FERNANDEZ, C FRANKLIN, G GARABATOS, C GARZON, JA GEIST, WM GREINER, DE GRUHN, C HAFIDOUNI, M HRUBEC, J JONES, PG JUDD, EG KUIPERS, JPM LADREM, M DEGUEVARA, PL LOVHOIDEN, G MACNAUGHTON, J MICHALON, A MICHALONMENTZER, ME MOSQUERA, J NATKANIEC, Z NELSON, JM NEUHOFER, G DELOSHEROS, CP PLO, M PORTH, P POWELL, B QUINN, B RAMIL, A RIESTER, JL ROHRINGER, H SAKREJDA, I THORSTEINSEN, T TRAXLER, J VOLTOLINI, C YANEZ, A ZYBERT, R AF ANDERSEN, E BARNES, PD BLAES, R BRAUN, H BROM, JM CHERNEY, M COHLER, M DELACRUZ, B DIEBOLD, GE DULNY, B FERNANDEZ, C FRANKLIN, G GARABATOS, C GARZON, JA GEIST, WM GREINER, DE GRUHN, C HAFIDOUNI, M HRUBEC, J JONES, PG JUDD, EG KUIPERS, JPM LADREM, M DEGUEVARA, PL LOVHOIDEN, G MACNAUGHTON, J MICHALON, A MICHALONMENTZER, ME MOSQUERA, J NATKANIEC, Z NELSON, JM NEUHOFER, G DELOSHEROS, CP PLO, M PORTH, P POWELL, B QUINN, B RAMIL, A RIESTER, JL ROHRINGER, H SAKREJDA, I THORSTEINSEN, T TRAXLER, J VOLTOLINI, C YANEZ, A ZYBERT, R TI A HIGH-SPEED FASTBUS VME DATA ACQUISITION-SYSTEM FOR THE CERN NA36 EXPERIMENT SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB A high speed data acquisition system was used to record events from sulphur-nucleus collisions at 200 GeV/c per nucleon at the CERN NA36 experiment. The system was designed to accept up to 12 Mbytes of raw data per beam spill. A multicrate Fastbus-CAMAC system was used to acquire the data during the beam spill and thereafter event-building and transfer to IBM 3480 cartridges were accomplished by means of two processors in a VME crate which processed data between spills. Communication between Fastbus and VME crates was provided by a fast link developed at CERN. C1 INST FIZYKI JADROWEJ,PL-30055 KRAKOW 30,POLAND. UNIV SANTIAGO,DEPT FIS PARTICULAS,E-15706 SANTIAGO,SPAIN. INST HOCHENERGIEPHYS,A-1050 VIENNA,AUSTRIA. UNIV LOUIS PASTEUR,CTR RECH NUCL,CNRS,INST NATL PHYS NUCL & PHYS PARTICULES,F-67037 STRASBOURG,FRANCE. UNIV YORK,DEPT PHYS,YORK YO1 5DD,N YORKSHIRE,ENGLAND. CTR INVEST ENERGET MEDIOAMBIENTALES & TECHNOL,DIV FIS PARTICULAS,E-28040 MADRID,SPAIN. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV BIRMINGHAM,DEPT PHYS,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. CERN,CH-1211 GENEVA 23,SWITZERLAND. CREIGHTON UNIV,DEPT PHYS,OMAHA,NE 68178. CARNEGIE MELLON UNIV,DEPT PHYS,PITTSBURGH,PA 15213. RP ANDERSEN, E (reprint author), UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY. RI de la Cruz, Begona/K-7552-2014; Yanez, Armando/L-2957-2014; Plo Casasus, Maximo/M-1445-2014; Ramil, Alberto/B-4698-2008; OI Yanez, Armando/0000-0003-4626-7993; Plo Casasus, Maximo/0000-0002-2289-918X; Ramil, Alberto/0000-0002-5333-9425; Quinn, Brian/0000-0003-2800-986X; Franklin, Gregg/0000-0003-4176-1378; Perez de los Heros, Carlos/0000-0002-2084-5866 NR 7 TC 0 Z9 0 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 300 EP 304 DI 10.1016/0168-9002(92)90789-7 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200029 ER PT J AU BOWMAN, CD ARTHUR, ED LISOWSKI, PW LAWRENCE, GP JENSEN, RJ ANDERSON, JL BLIND, B CAPPIELLO, M DAVIDSON, JW ENGLAND, TR ENGEL, LN HAIGHT, RC HUGHES, HG IRELAND, JR KRAKOWSKI, RA LABAUVE, RJ LETELLIER, BC PERRY, RT RUSSELL, GJ STAUDHAMMER, KP VERSAMIS, G WILSON, WB AF BOWMAN, CD ARTHUR, ED LISOWSKI, PW LAWRENCE, GP JENSEN, RJ ANDERSON, JL BLIND, B CAPPIELLO, M DAVIDSON, JW ENGLAND, TR ENGEL, LN HAIGHT, RC HUGHES, HG IRELAND, JR KRAKOWSKI, RA LABAUVE, RJ LETELLIER, BC PERRY, RT RUSSELL, GJ STAUDHAMMER, KP VERSAMIS, G WILSON, WB TI NUCLEAR-ENERGY GENERATION AND WASTE TRANSMUTATION USING AN ACCELERATOR-DRIVEN INTENSE THERMAL-NEUTRON SOURCE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB We describe a new approach for commercial nuclear energy production without a long-term high-level waste stream and for transmutation of both fission product and higher actinide commercial nuclear waste using a thermal flux of accelerator-produced neutrons in the 10(16) n/cm2s range. Continuous neutron fluxes at this intensity. which is approximately 100 times larger than is typically available in a large scale thermal reactor. appear practical, owing to recent advances in proton linear accelerator technology and to the spallation target-moderator design presented here. This large flux of thermal neutrons makes possible a waste inventory in the transmutation system which is smaller by about a factor of 100 than competing concepts. The accelerator allows the system to operate well below criticality so that the possibility for a criticality accident is eliminated. No control rods are required. The successful implementation of this new method for energy generation and waste transmutation would eliminate the need for nuclear waste storage on a geologic time scale. The production of nuclear energy from Th-232 or U-238 is used to illustrate the general principles of commercial nuclear energy, production without long-term high-level waste. There appears to be sufficient thorium to meet the world's energy needs for many millenia. RP BOWMAN, CD (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 29 TC 375 Z9 385 U1 18 U2 71 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 336 EP 367 DI 10.1016/0168-9002(92)90795-6 PG 32 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200035 ER PT J AU LEE, WK MACRANDER, AT MILLS, DM ROGERS, CS SMITHER, RK BERMAN, LE AF LEE, WK MACRANDER, AT MILLS, DM ROGERS, CS SMITHER, RK BERMAN, LE TI PERFORMANCE OF A GALLIUM-COOLED 85-DEGREES INCLINED SILICON MONOCHROMATOR FOR A HIGH-POWER DENSITY X-RAY-BEAM SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID CRYSTALS AB We have made double crystal rocking curve measurements on a gallium-cooled silicon monochromator in both the normal flat geometry and an 85-degrees inclined geometry on the X-25 focused wiggler beamline at the National Synchrotron Light Source. At 192 mA ring current, the focused wiggler delivers about 37.7 W of power into a spot size of FWHM 0.4 x 0.8 mm2, resulting in an average power density of about 118 W/mm2. The inclined crystal geometry spreads the beam footprint on the surface of the crystal while maintaining a b = -1 symmetric Bragg reflection. At an 85-degrees inclination angle, the beam footprint is 11.5 times larger than that for the flat geometry. In the case of the flat geometry at a ring current of 156 mA, we see, via an infrared camera, an increase in temperature of 56-degrees-C above the nominal silicon temperature. The rocking curves for this case were significantly broadened (FWHM for 15 keV Si(333) = 35 arc sec) due to the thermally induced strain in the silicon. In the inclined crystal, the thermal peak on the crystal was only about 2.7-degrees-C above the nominal silicon temperature. In this case, the rocking curve width for the 15 keV Si(333) reflection was measured to be FWHM = 2.7 arc sec compared with the theoretical width of FWHM = 1.0 arc sec. The residual strain is totally due to the mounting of the crystals and not the heating from the X-ray beam. C1 BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. RP LEE, WK (reprint author), ARGONNE NATL LAB,ADV PHOTON SOURCE,ARGONNE,IL 60439, USA. NR 11 TC 26 Z9 26 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 381 EP 387 DI 10.1016/0168-9002(92)90798-9 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200038 ER PT J AU HAYNES, DL JONES, CM JURAS, RC MEIGS, MJ RAATZ, JE SCHROEDER, JB AF HAYNES, DL JONES, CM JURAS, RC MEIGS, MJ RAATZ, JE SCHROEDER, JB TI A SIMPLE, INEXPENSIVE VOLTAGE GRADING RESISTOR FOR LARGE ELECTROSTATIC ACCELERATORS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Letter AB A simple, inexpensive voltage grading resistor installation for electrostatic accelerators is described. Functional tests in the Holifield Heavy Ion Research Facility 25-MV tandem accelerator indicate that this system is insensitive to spark-induced damage at operating potentials up to 24 MV. C1 NATL ELECTROSTAT CORP,MIDDLETON,WI 53562. RP HAYNES, DL (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 6 TC 9 Z9 9 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 AUG 15 PY 1992 VL 320 IS 1-2 BP 400 EP 402 DI 10.1016/0168-9002(92)90803-C PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA JH542 UT WOS:A1992JH54200043 ER PT J AU SWEET, RM MOFFAT, K TRENTHAM, DR AF SWEET, RM MOFFAT, K TRENTHAM, DR TI THE DEVELOPMENT AND APPLICATION OF PHOTOSENSITIVE CAGED COMPOUNDS TO AID TIME-RESOLVED STRUCTURE DETERMINATION OF MACROMOLECULES - DISCUSSION SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Discussion C1 NATL INST MED RES,LONDON NW7 1AA,ENGLAND. UNIV CHICAGO,DEPT BIOCHEM & MOLEC BIOL,CHICAGO,IL 60637. RP SWEET, RM (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON, ENGLAND SW1Y 5AG SN 0962-8428 J9 PHILOS T ROY SOC A JI Philos. Trans. R. Soc. Lond. Ser. A-Math. Phys. Eng. Sci. PD AUG 15 PY 1992 VL 340 IS 1657 BP 243 EP 244 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA JK123 UT WOS:A1992JK12300010 ER PT J AU SINGER, PT CARTY, RP BERMAN, LE SCHLICHTING, I STOCK, A SMALAS, A CAI, ZP MANGEL, WF JONES, KW SWEET, RM AF SINGER, PT CARTY, RP BERMAN, LE SCHLICHTING, I STOCK, A SMALAS, A CAI, ZP MANGEL, WF JONES, KW SWEET, RM TI LAUE DIFFRACTION AS A TOOL IN DYNAMIC STUDIES - HYDROLYSIS OF A TRANSIENTLY STABLE INTERMEDIATE IN CATALYSIS BY TRYPSIN SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Article ID X-RAY-DIFFRACTION; MACROMOLECULAR CRYSTALLOGRAPHY; CRYSTALS; PROTEIN; PHOTOGRAPHS; DETECTOR; BINDING AB A transiently stable intermediate in trypsin catalysis, guanidinobenzoyl-Ser-195 trypsin, can be trapped and then released by control of the pH in crystals of the enzyme. This effect has been investigated by static and dynamic white-beam Laue crystallography. Comparison of structures determined before and immediately after a pH jump reveals the nature of concerted changes that accompany activation of the enzyme. Careful analysis of the results of several structure determinations gives information about the reliability of Laue results in general. A study of multiple exposures taken under differing conditions of beam intensity, crystal quality, and temperature revealed information about ways to control damage of specimens by the X-ray beam. C1 SUNY HLTH SCI CTR BROOKLYN,DEPT BIOCHEM,BROOKLYN,NY 11203. BRANDEIS UNIV,ROSENSTIEL BASIC MED SCI RES CTR,WALTHAM,MA 02254. CTR ADV BIOTECHNOL & MED,PISCATAWAY,NJ 08854. UNIV TROMSO,INST MATH & PHYS SCI,N-9000 TROMSO,NORWAY. BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. RP SINGER, PT (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. RI Schlichting, Ilme/I-1339-2013; Smalas, Arne/C-4131-2016 OI Smalas, Arne/0000-0002-4651-9911 NR 21 TC 10 Z9 10 U1 0 U2 0 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON, ENGLAND SW1Y 5AG SN 0962-8428 J9 PHILOS T ROY SOC A JI Philos. Trans. R. Soc. Lond. Ser. A-Math. Phys. Eng. Sci. PD AUG 15 PY 1992 VL 340 IS 1657 BP 285 EP 300 DI 10.1098/rsta.1992.0067 PG 16 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA JK123 UT WOS:A1992JK12300015 ER PT J AU SENGUPTA, S SHI, DL WANG, Z BIONDO, AC BALACHANDRAN, U GORETTA, KC AF SENGUPTA, S SHI, DL WANG, Z BIONDO, AC BALACHANDRAN, U GORETTA, KC TI EFFECT OF Y2BACUOX PRECIPITATES ON FLUX PINNING IN MELT-PROCESSED YBA2CU3OX SO PHYSICA C LA English DT Article ID CRITICAL CURRENT-DENSITY; HIGH-JC; CU-O; SUPERCONDUCTORS; GROWTH; CRYSTALS; CREEP; OXIDE AB Magnetic hysteresis data have been taken at 4.2, 50, and 77 K over a wide range of magnetic field on three types of melt-textured YBa2Cu3Ox (123) samples: stoichiometric 123, 123 + 6 mol% Y2BaCuO5 (211) particles, and quench-melt-growth-processed (QMGP) 123 + 6 mol% 211. In order to obtain accurate comparisons of the intragranular critical current densities, the magnetization measurements were performed on finely powdered samples, the average particle size of which was less than the grain size of the original sample. The QMGP samples exhibited substantially larger hysteresis at 4.2 and 50 K, indicating significantly enhanced flux pinning at these temperatures. At 77 K, however, although the hysteresis loop of the QMGP samples was largest at low fields, the hysteresis difference, DELTA-M, decreased more rapidly with field than did the DELTA-M of the stoichiometric melt-processed sample. A possible pinning mechanism related to the observed hysteretic behavior is discussed. C1 ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439. RP SENGUPTA, S (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 28 TC 59 Z9 59 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD AUG 15 PY 1992 VL 199 IS 1-2 BP 43 EP 49 DI 10.1016/0921-4534(92)90538-N PG 7 WC Physics, Applied SC Physics GA JK213 UT WOS:A1992JK21300007 ER PT J AU PETERSON, DE WAHLBECK, PG MALEY, MP WILLIS, JO KUNG, PJ COULTER, JY SALAZAR, KV PHILLIPS, DS BINGERT, JF PETERSON, EJ HULTS, WL AF PETERSON, DE WAHLBECK, PG MALEY, MP WILLIS, JO KUNG, PJ COULTER, JY SALAZAR, KV PHILLIPS, DS BINGERT, JF PETERSON, EJ HULTS, WL TI DEVELOPMENT OF TL-1223 SUPERCONDUCTING TAPES SO PHYSICA C LA English DT Article ID CU; WIRES AB A superconducting tape based on the TlBa2Ca2Cu3O9 (Tl-1223) phase sheathed in silver was fabricated using the powder-in-tube method. Optimal conditions to synthesize powder (T(c) = 110 K) and anneal composite tapes were examined. Microstructural examination indicates that cracks are easily healed during a 3 h anneal at the relatively low temperature of 775-degrees-C. A transport critical current density J(c) of 6200 A/cm2 at 75 K was measured on short lengths of the annealed rolled and pressed 0.20 mm thick tape. The J(c) value drops to about 250 A/cm2 at 75 K and 1 T due to the presence of weak links; however, a J(c) of 1000 A/cm2 at 45 K is maintained constant to above 6 T. Measurements of magnetic hysteresis loops indicate that the Tl-1223 tape exhibits a high degree of flux pinning. Very little texturing of the superconducting core was evident. C1 WICHITA STATE UNIV,DEPT CHEM,WICHITA,KS 67208. RP PETERSON, DE (reprint author), LOS ALAMOS NATL LAB,CTR SUPERCONDUCT TECHNOL,MAIL STOP K763,LOS ALAMOS,NM 87545, USA. NR 21 TC 29 Z9 29 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD AUG 15 PY 1992 VL 199 IS 1-2 BP 161 EP 170 DI 10.1016/0921-4534(92)90555-Q PG 10 WC Physics, Applied SC Physics GA JK213 UT WOS:A1992JK21300024 ER PT J AU CHRISTENSEN, K OLAMI, Z AF CHRISTENSEN, K OLAMI, Z TI SCALING, PHASE-TRANSITIONS, AND NONUNIVERSALITY IN A SELF-ORGANIZED CRITICAL CELLULAR-AUTOMATON MODEL SO PHYSICAL REVIEW A LA English DT Article ID EARTHQUAKES; SYSTEMS AB We present a two-dimensional continuous cellular automaton that is equivalent to a driven spring-block model. Both the conservation and the anisotropy in the model are controllable quantities. Above a critical level of conservation, the model exhibits self-organized criticality. The self-organization of this system and hence the critical exponents depend on the conservation and the boundary conditions. In the critical isotropic nonconservative phase, the exponents change continuously as a function of conservation. Furthermore, the exponents vary continuously when changing the boundary conditions smoothly. Consequently, there is no universality of the critical exponents. We discuss the relevance of this for earthquakes. Introducing anisotropy changes the scaling of the distribution function, but not the power-law exponent. We explore the phase diagram of this model. We find that at low conservation levels a localization transition occurs. We see two additional phase transitions. The first is seen when moving from the conservative into the nonconservative model. The second appears when passing from the anisotropic two-dimensional system to the purely one-dimensional system. RP CHRISTENSEN, K (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 20 TC 161 Z9 164 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 15 PY 1992 VL 46 IS 4 BP 1829 EP 1838 DI 10.1103/PhysRevA.46.1829 PG 10 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JK630 UT WOS:A1992JK63000020 ER PT J AU ZHOU, XL CHEN, SH FELCHER, GP AF ZHOU, XL CHEN, SH FELCHER, GP TI IMPROVED ANALYTICAL FORMULAS FOR X-RAY AND NEUTRON REFLECTION FROM SURFACE-FILMS SO PHYSICAL REVIEW A LA English DT Article ID INTERFACE AB A general and exact expression for x-ray and neutron reflectance and transmittance is given in terms of an integral of the real-space scattering-length-density profile fluctuation of the film, with respect to an arbitrary constant reference density level, over the wave function inside the film. Various special cases and approximations are then derived from this exact form by suitable approximations of the wave function. In particular, two practical approximate formulas are derived which are improvement over the corresponding distorted-wave Born approximations. One is for an arbitrary film deposited on a known substrate and the other for a free liquid surface. Numerical results are used to illustrate the accuracy of these formulas. C1 ARGONNE NATL LAB, DIV INTENSE PULSED NEUTRON SOURCE 360, ARGONNE, IL 60439 USA. ARGONNE NATL LAB, DIV MAT SCI 223, ARGONNE, IL 60439 USA. RP ZHOU, XL (reprint author), MIT, DEPT NUCL ENGN, 24-211, CAMBRIDGE, MA 02139 USA. NR 12 TC 9 Z9 9 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 15 PY 1992 VL 46 IS 4 BP 1839 EP 1843 DI 10.1103/PhysRevA.46.1839 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JK630 UT WOS:A1992JK63000021 ER PT J AU ALEXANDER, FJ CHEN, H CHEN, S DOOLEN, GD AF ALEXANDER, FJ CHEN, H CHEN, S DOOLEN, GD TI LATTICE BOLTZMANN MODEL FOR COMPRESSIBLE FLUIDS SO PHYSICAL REVIEW A LA English DT Article ID GAS AUTOMATA; EQUATION AB We formulate a lattice Boltzmann model which simulates compressible fluids. By choosing the parameters of the equilibrium distribution appropriately, we are able to select the sound speed (which may be set arbitrarily low), bulk viscosity, and kinematic viscosity. This model simulates compressible flows and can include shocks. With a proper rescaling and zero-sound speed, this model simulates Burgers's equation. The viscosity determined by a Chapman-Enskog expansion compares well with that measured from simulations. We also compare the exact solutions of Burgers's equation on the unit circle to solutions of our lattice Boltzmann model, again finding reasonable agreement. RP ALEXANDER, FJ (reprint author), LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,MS-B258,LOS ALAMOS,NM 87545, USA. RI Chen, Shiyi/A-3234-2010 NR 13 TC 69 Z9 75 U1 0 U2 12 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 AUG 15 PY 1992 VL 46 IS 4 BP 1967 EP 1970 DI 10.1103/PhysRevA.46.1967 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JK630 UT WOS:A1992JK63000033 ER PT J AU MARSH, GE AF MARSH, GE TI MAGNETIC ENERGY, MULTIPLY CONNECTED DOMAINS, AND FORCE-FREE FIELDS SO PHYSICAL REVIEW A LA English DT Article ID RELAXATION AB This paper addresses the question of magnetic energy in mutiply connected domains. It is shown that the magnetic energy must in general include a boundary term that is usually assumed to vanish. The physical interpretation of this term is discussed in terms of de Rham's theorems. RP MARSH, GE (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 28 TC 9 Z9 9 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 15 PY 1992 VL 46 IS 4 BP 2117 EP 2123 DI 10.1103/PhysRevA.46.2117 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JK630 UT WOS:A1992JK63000051 ER PT J AU OLAMI, Z CHRISTENSEN, K AF OLAMI, Z CHRISTENSEN, K TI TEMPORAL CORRELATIONS, UNIVERSALITY, AND MULTIFRACTALITY IN A SPRING-BLOCK MODEL OF EARTHQUAKES SO PHYSICAL REVIEW A LA English DT Note ID SELF-ORGANIZED CRITICALITY AB We characterize the complex temporal structure of the earthquake activity in a nonconservative spring-block model of earthquakes. The temporal sequence of the occurrence of earthquakes is observed to be multifractal. The clustering (temporal correlations) between earthquakes is characterized by a universal exponent. Those correlations disappear when the model becomes conservative. RP OLAMI, Z (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 12 TC 35 Z9 35 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 15 PY 1992 VL 46 IS 4 BP R1720 EP R1723 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA JK630 UT WOS:A1992JK63000004 ER PT J AU TAN, ZQ NAMAVAR, F BUDNICK, JI SANCHEZ, FH FASIHUDDIN, A HEALD, SM BOULDIN, CE WOICIK, JC AF TAN, ZQ NAMAVAR, F BUDNICK, JI SANCHEZ, FH FASIHUDDIN, A HEALD, SM BOULDIN, CE WOICIK, JC TI SILICIDE FORMATION AND STRUCTURAL EVOLUTION IN FE-IMPLANTED, CO-IMPLANTED, AND NI-IMPLANTED SILICON SO PHYSICAL REVIEW B LA English DT Article ID ABSORPTION FINE-STRUCTURE; BURIED COSI2 LAYERS; ION-BEAM SYNTHESIS; 111 SI; MICROSTRUCTURE; MESOTAXY; CRYSTALS; SI(100) AB Silicide formation and structural evolution in Fe-, Co-, and Ni-implanted silicon have been studied with use of extended x-ray-absorption fine-structure, x-ray-diffraction, and Rutherford backscattering spectrometry. Si(100) wafers were implanted at elevated temperatures, typically 350-degrees-C, to doses ranging from 1 X 10(16) to 1 X 10(18) ions/cm2. In the Co-implanted system, CoSi2 forms with doses as low as 1 X 10(16) Co/cm2 and up to 3 X 10(17) Co/cm2, where the CoSi phase starts to form. At higher doses (8 X 10(17) co/cm2), ordered CoSi and a CoSi-like short-range-ordered phase coexist. The silicide formation observed in the Ni-implanted system is similar to that in the cobalt-implanted system. In the case of iron implantation, Fe is coordinated with about eight Si atoms in the (1-3) X 10(17) Fe/cm2 range as in the tetragonal FeSi2. However, the FeSi2 phase forms only at around 5 X 10(17) Fe/cm2. At even higher doses, a substantial amount of iron is in disordered states in addition to the ordered FeSi phase. Upon annealing at 900-degrees-C, semiconducting beta-FeSi2 forms in all the Fe-implanted samples independent of the dose. Mechanisms for silicide formation in these ion-implanted systems are discussed with respect to crystal structure, diffusion, and implantation damage. C1 UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269. SPIRE CORP,BEDFORD,MA 01730. UNIV CONNECTICUT,INST MAT SCI,STORRS,CT 06269. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. RP TAN, ZQ (reprint author), BROOKHAVEN NATL LAB,BLDG 510E,UPTON,NY 11973, USA. NR 29 TC 28 Z9 32 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1992 VL 46 IS 7 BP 4077 EP 4085 DI 10.1103/PhysRevB.46.4077 PG 9 WC Physics, Condensed Matter SC Physics GA JJ846 UT WOS:A1992JJ84600045 ER PT J AU MARUYAMA, T GARWIN, EL PREPOST, R ZAPALAC, GH AF MARUYAMA, T GARWIN, EL PREPOST, R ZAPALAC, GH TI ELECTRON-SPIN POLARIZATION IN PHOTOEMISSION FROM STRAINED GAAS GROWN ON GAAS1-XPX SO PHYSICAL REVIEW B LA English DT Note ID CRITICAL LAYER THICKNESS; MOLECULAR-BEAM-EPITAXY; X-RAY-DIFFRACTION; SI1-XGEX/SI HETEROSTRUCTURES; MISFIT DISLOCATIONS; RELAXATION; SUPERLATTICES; PHOTOLUMINESCENCE; PHOTOREFLECTANCE; SPECTROSCOPY AB Spin-polarized electron photoemission has been investigated for strained GaAs epitaxially grown on a GaAs1-xPx buffer. The lattice-mismatched heterostructure results in a highly strained epitaxial layer and significant enhancement of electron-spin polarization is observed. The effect of epitaxial layer strain is studied for a variety of samples with epitaxial-layer thicknesses varying from 0.1 to 0.3-mu-m and the phosphorus concentration x varying from 0.21 to 0.28. Electron-spin polarization as high as 90% has been observed. The 0.3-mu-m-thick sample, well in excess of theoretical estimates for the critical thickness for pseudomorphic growth, reaches an electron-spin polarization of 80%, demonstrating a significant persistence of lattice strain. C1 UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706. RP MARUYAMA, T (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 37 TC 75 Z9 75 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1992 VL 46 IS 7 BP 4261 EP 4264 DI 10.1103/PhysRevB.46.4261 PG 4 WC Physics, Condensed Matter SC Physics GA JJ846 UT WOS:A1992JJ84600069 ER PT J AU RALLS, KS AF RALLS, KS TI TUNNEL-JUNCTION NOISE AT LOW-TEMPERATURES - TUNNELING OR LOCAL HEATING SO PHYSICAL REVIEW B LA English DT Note ID METAL AB A model that considers energy transfer from hot electrons to structural defects provides a simpler explanation for the dynamics of discrete resistance fluctuations in tunnel junctions than one involving tunneling at low temperatures. The issue of whether or not change is being trapped at the defect then becomes irrelevant to the fluctuation dynamics. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP RALLS, KS (reprint author), AT&T BELL LABS,MURRAY HILL,NJ 07974, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1992 VL 46 IS 7 BP 4295 EP 4296 DI 10.1103/PhysRevB.46.4295 PG 2 WC Physics, Condensed Matter SC Physics GA JJ846 UT WOS:A1992JJ84600078 ER PT J AU PALMER, BJ GORDON, RG AF PALMER, BJ GORDON, RG TI ADDENDUM AND ERRATUM - FREQUENCY-DEPENDENT CONDUCTIVITY IN POLYCRYSTALLINE METALS AND SEMICONDUCTORS [PHYS REV B 40,11549 (1989)] SO PHYSICAL REVIEW B LA English DT Note AB Our claim in the original paper that the one-particle distortion to the equilibrium distribution function in three dimensions has the specific form g(r,v) = g0(v) + g(x)(x,v) + g(y)(y,v) + g(z)(z,v), given that the scattering frequency is gamma(r) = v0 + gamma'(x) + gamma'(y) + gamma'(z), is incorrect. However, it still appears to be an effective approximation to the true result. C1 HARVARD UNIV, DEPT CHEM, CAMBRIDGE, MA 02138 USA. RP PALMER, BJ (reprint author), PACIFIC NW LAB, DEPT ANALYT SCI, RICHLAND, WA 99352 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1992 VL 46 IS 8 BP 4986 EP 4987 DI 10.1103/PhysRevB.46.4986 PG 2 WC Physics, Condensed Matter SC Physics GA JK725 UT WOS:A1992JK72500072 ER PT J AU FRIEMAN, JA HILL, CT WATKINS, R AF FRIEMAN, JA HILL, CT WATKINS, R TI LATE-TIME COSMOLOGICAL PHASE-TRANSITIONS - PARTICLE-PHYSICS MODELS AND COSMIC EVOLUTION SO PHYSICAL REVIEW D LA English DT Article ID PSEUDO-GOLDSTONE BOSONS; DOMAIN-WALLS; EARLY UNIVERSE; AXIONS; INFLATION; MATTER AB We describe a natural particle-physics basis for late-time phase transitions in the Universe. Such a transition can seed the formation of large-scale structure while leaving a minimal imprint upon the microwave background anisotropy. The key ingredient is an ultralight pseudo Nambu-Goldstone boson with an astronomically large (approximately kpc-Mpc) Compton wavelength. We analyze the cosmological signatures of and constraints upon a wide class of scenarios which do not involve domain walls. In addition to seeding structure, coherent ultralight bosons may also provide unclustered dark matter in a spatially flat universe, OMEGA(phi) congruent-to 1. C1 UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. RP FRIEMAN, JA (reprint author), FERMI NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 44 TC 98 Z9 99 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 AUG 15 PY 1992 VL 46 IS 4 BP 1226 EP 1238 DI 10.1103/PhysRevD.46.1226 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JH749 UT WOS:A1992JH74900004 ER PT J AU GLENDENNING, NK AF GLENDENNING, NK TI 1ST-ORDER PHASE-TRANSITIONS WITH MORE THAN ONE CONSERVED CHARGE - CONSEQUENCES FOR NEUTRON-STARS SO PHYSICAL REVIEW D LA English DT Article ID NUCLEAR-MATTER; QUARK-MATTER; STRANGE MATTER; HADRON; HYPERNUCLEI; MODELS; STATE AB We consider how first-order phase transitions in systems having more than one conserved charge (multicomponent systems) differ from those in systems having only one. In general, the properties of the transition are quite different in the two cases. Perhaps most importantly the pressure varies continuously with the proportion of phases in equilibrium, and is not a constant in the mixed phase as in the example of the gas-liquid transition in familiar one-component systems. We identify the microphysics responsible for the difference. In the case that one of the conserved charges is the electric charge, a geometrical structure in the mixed phase is expected. As an example, possible consequences are developed for the structure of a neutron star in which the transition to quark matter in the core occurs. It is also pointed out that the general results pertain to relativistic nuclear collisions in the so-called stopping or baryon-rich domain where there are three conserved charges (baryon, electric, and strangeness), and impact the expected phase transition from confined hadronic matter to quark matter as regards signals that are supposedly driven by pressure. The physics discussed here is also relevant to the subnuclear gas-liquid transition that is under study in lower-energy nuclear collisions. RP GLENDENNING, NK (reprint author), LAWRENCE BERKELEY LAB,DIV NUCL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 30 TC 530 Z9 540 U1 0 U2 6 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 AUG 15 PY 1992 VL 46 IS 4 BP 1274 EP 1287 DI 10.1103/PhysRevD.46.1274 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JH749 UT WOS:A1992JH74900007 ER PT J AU SCHUMACHER, B MILLER, WA ZUREK, WH AF SCHUMACHER, B MILLER, WA ZUREK, WH TI KERR BLACK-HOLE IN EQUILIBRIUM WITH A ROTATING HEAT BATH SO PHYSICAL REVIEW D LA English DT Article ID THERMODYNAMICS AB The equilibrium and stability of a rotating black hole in a finite heat bath is discussed. An axisymmetric box of radiation in thermal equilibrium rotates rigidly, and some radiation slumps towards the outer wall. When such a heat bath is in equilibrium with a black hole, the temperatures and angular velocities of the hole and the bath are equal. The situation in which the heat bath is in a cylindrical box much larger than the hole, and contains only massless modes, is particularly simple and may be examined in detail. A sufficient condition for the stability of the equilibrium can be derived, analogous to the stability condition derived by Davies and by Gibbons and Perry for the nonrotating case. Depending on the total energy E, total angular momentum J, and radius R of the heat bath, the system at equilibrium may be in one of three thermodynamic regimes: a radiation-only state, a state dominated by a black hole, or a transition state in which both the black hole and the heat bath contain significant energy, angular momentum, and entropy. C1 LOS ALAMOS NATL LAB,DIV THEORET,THEORET ASTROPHYS GRP,LOS ALAMOS,NM 87545. RP SCHUMACHER, B (reprint author), KENYON COLL,DEPT PHYS,GAMBIER,OH 43022, USA. NR 15 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD AUG 15 PY 1992 VL 46 IS 4 BP 1416 EP 1423 DI 10.1103/PhysRevD.46.1416 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JH749 UT WOS:A1992JH74900018 ER PT J AU DOWKER, HF HALLIWELL, JJ AF DOWKER, HF HALLIWELL, JJ TI QUANTUM-MECHANICS OF HISTORY - THE DECOHERENCE FUNCTIONAL IN QUANTUM-MECHANICS SO PHYSICAL REVIEW D LA English DT Article ID WIGNER FUNCTION; CONSISTENT HISTORIES; BROWNIAN-MOTION; WAVE PACKET; COSMOLOGY; SPACETIME; ENVIRONMENT; PRINCIPLE; UNIVERSE; MODEL AB We study a formulation of quantum mechanics in which the central notion is that of a quantum-mechanical history-a sequence of events at a succession of times. The primary aim is to identify sets of "decoherent" (or "consistent") histories for the system. These are quantum-mechanical histories suffering negligible interference with each other, and, therefore, to which probabilities may be assigned. These histories may be found for a given system using the so-called decoherence functional. When the decoherence functional is exactly diagonal, probabilities may be assigned to the histories, and all probability sum rules are satisfied exactly. We propose a condition for approximate decoherence, and argue that it implies that most probability sum rules will be satisfied to approximately the same degree. We also derive an inequality bounding the size of the off-diagonal terms of the decoherence functional. We calculate the decoherence functional for some simple one-dimensional systems, with a variety of initial states. For these systems, we explore the extent to which decoherence is produced using two different types of coarse graining. The first type of coarse graining involves imprecise specification of the particle's. position. The second involves coupling the particle to a thermal bath of harmonic oscillators and ignoring the details of the bath (the Caldeira-Leggett model). We argue that both types of coarse graining are necessary in general. We explicitly exhibit the degree of decoherence as a function of the temperature of the bath, and of the width to within which the particle's position is specified. We study the diagonal elements of the decoherence functional, representing the probabilities for the possible histories of the system. To the extent that the histories decohere, we show that the probability distributions are peaked about the classical histories of the system, with the distribution of their initial positions and momenta given by a smeared version of the Wigner function. We discuss this result in connection with earlier uses of the Wigner function in this context. We find that there is a certain amount of tension between the demands of decoherence and peaking about classical paths. C1 MIT, CTR THEORET PHYS, NUCL SCI LAB, CAMBRIDGE, MA 02139 USA. RP NASA, CTR FERMILAB ASTROPHYS, FERMI NATL ACCELERATOR LAB, POB 500, BATAVIA, IL 60510 USA. NR 50 TC 129 Z9 129 U1 1 U2 7 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 AUG 15 PY 1992 VL 46 IS 4 BP 1580 EP 1609 DI 10.1103/PhysRevD.46.1580 PG 30 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA JH749 UT WOS:A1992JH74900032 ER EF