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871.
872.
Theoreticalanalysisandexperimentalinvestigationofpulsedtunableforsteritelaser¥WUFushun;WUXing;B.Hamilton;YAOJianquan(PhysicsD... 相似文献
873.
874.
R.J. Ballagh J. Cooper M.W. Hamilton W.J. Sandle D.M. Warrington 《Optics Communications》1981,37(2):143-148
The mean field treatment of dispersive and absorptive bistability for two-level atoms in an optical cavity is extended to account for the gaussian envelope of the cavity mode. The principal modification to the plane wave cavity case is the raising of the critical threshold for absorptive bistability as compared to thresholds for dispersive bistability. 相似文献
875.
Derek R. Boyd Peter B. Coulter W.James Hamilton W. Brian Jennings Valerie E. Wilson 《Tetrahedron letters》1984,25(21):2287-2288
The results of a kinetic study of the thermal isomerization of oxaziridines derived from -substituted C-arylaldimines and C-diarylketimines to the isomeric nitrones is reported. 相似文献
876.
877.
Simmons MY Hamilton AR Pepper M Linfield EH Rose PD Ritchie DA 《Physical review letters》2000,84(11):2489-2492
A detailed investigation of the metallic behavior in high-quality GaAs-AlGaAs two-dimensional hole systems reveals the presence of quantum corrections to the resistivity at low temperatures. Despite the low density ( r(s)>10) and high quality of these systems, both weak localization (observed via negative magnetoresistance) and weak hole-hole interactions (giving a correction to the Hall constant) are present in the so-called metallic phase where the resistivity decreases with decreasing temperature. If these quantum corrections persist down to T = 0, the results suggest that even at high r(s) there is no metallic phase in two dimensions. 相似文献
878.
Roesky HW Stasch A Hatop H Rennekamp C H Hamilton D Noltemeyer M Schmidt HG 《Angewandte Chemie (International ed. in English)》2000,39(1):171-173
A facile synthesis utilizing tetra-n-butylammonium hydrogen difluoride and Group 13 alkyl compounds leads to the soluble salts 1 - 4. Compound 1 is the smallest difluoro-diorganoaluminate so far characterized. The corresponding gallium and indium derivatives 3 and 4 are not sensitive to moisture. 相似文献
879.
880.
Allen ZA Astone P Baggio L Busby D Bassan M Blair DG Bonaldi M Bonifazi P Carelli P Cerdonio M Coccia E Conti L Cosmelli C Crivelli Visconti V D'Antonio S Fafone V Falferi P Fortini P Frasca S Hamilton WO Heng IS Ivanov EN Johnson WW Kingham M Locke CR Marini A 《Physical review letters》2000,85(24):5046-5050
We report the initial results from a search for bursts of gravitational radiation by a network of five cryogenic resonant detectors during 1997 and 1998. This is the first significant search with more than two detectors observing simultaneously. No gravitational wave burst was detected. The false alarm rate was lower than 1 per 10(4) yr when three or more detectors were operating simultaneously. The typical threshold was H approximately 4x10(-21) Hz-1 on the Fourier component at approximately 10(3) Hz of the gravitational wave strain amplitude. New upper limits for amplitude and rate of gravitational wave bursts have been set. 相似文献