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101.
本文报导了采用氩离子激光器来泵浦Rr ̄(3+):YLF晶体,应用声光调制器实现了主动锁模;同时应用振动─高反射平面镜也实现了被动锁模,两种锁模均得到了ps光脉冲。据作者了解这是这种晶体材料的第一次锁模运转。 相似文献
102.
O. N. Bakharev A. V. Dooglav A. V. Egorov E. V. Krjukov Yu. A. Sakhratov M. A. Teplov H. B. Brom J. Witteveen 《JETP Letters》1996,64(5):398-403
The nuclear magnetic relaxation of 169Tm in TmBa2Cu3O6+x
(x=0.1–1.0, Δ x=0.1) and TmBa2Cu4O8 is studied at temperatures below 5 K. In all the samples, the Tm spin-lattice relaxation proceeds via intrinsic paramagnetic
centers (PCs) like Cu2+ or copper-oxygen spin-polarized clusters. The experimental data for TmBa2Cu3O6+x
support the idea of the structural (chemical) micro-phase separation in oxygen-deficient 123 compounds. Apparently, the samples
with x⩾0.4 contain hole-poor nonsuperconducting regions, enriched with PCs, and hole-rich (PC-poor) superconducting regions. The
volume fraction f
n of the PC-rich phase reaches a maximum value of 0.85 at x=0.4 and decreases monotonically with increasing x (f
n=0.5, 0.3, and 0.25 at x=0.5, 0.6, and 0.7, respectively). The Tm spin-lattice relaxation in the underdoped TmBa2Cu4O8 compound indicates that this sample, in contrast to oxygen-deficient TmBa2Cu3O6+x
, has a homogeneous composition. However, the Tm spin-spin relaxation measurements reveal two sorts of the Tm nuclear spins
in Tm124, having different NMR spectra and different relaxation times T
2. The latter result is evidence of electronic phase separation in CuO2 phases.
Pis’ma Zh. éksp. Teor. Fiz. 64, No. 5, 365–370 (10 September 1996)
Published in English in the original Russian journal. Edited by Steve Torstveit. 相似文献
103.
Photoionization efficiency data for Hg2+ have been obtained in the region of 650–1400 A. The ionization energy of Hg2 was determined to be 9.103 ± 0.010 eV. This value allows the calculation of the dissociation energy of Hg+2 to be 1.40 ± 0.02 eV. By analyzing the differences in energy between corresponding autoionization peaks observed in the Hg+ and the Hg2+ spectra and by assuming the charge induced-dipole interaction to be the dominant interaction between Hg+(2D5/2, 3/2) and Hg at the equilibrium bond distance of Hg2, the equilibrium bond distance for Hg2 was deduced to 3.35 A. 相似文献
104.
Abachi S Baringer P Bylsma BG DeBonte R Koltick D Low EH McIlwain RL Miller DH Ng CR Shibata EI Derrick M Kooijman P Loos JS Musgrave B Price LE Repond J Sugano K Blockus D Brabson B Brom J Jung C Ogren H Paik HW Rust DR Ackerlof C Chapman J Errede D Ken MT Meyer DI Nitz D Thun R Tschirhart R Neal H Cork B 《Physical review letters》1987,58(25):2627-2630
105.
Abachi S Derrick M Kooijman P Musgrave B Price L Repond J Sugano K Blockus D Brabson B Brom J Jung C Ogren H Rust DR Cork B Akerlof C Chapman J Errede D Ken MT Meyer DI Neal H Nitz D Thun R Tschirhart R Baringer P Bylsma BG DeBonte R Koltick D Low EH McIlwain RL Miller DH Ng CR Shibata E 《Physical review D: Particles and fields》1990,41(5):1414-1424
106.
Photodissociation studies using ion imaging are reported, measuring the coherence of the polarization of the S((1)D(2)) fragment from the photolysis of single-quantum state-selected carbonyl sulfide (OCS) at 223 and 230 nm. A hexapole state-selector focuses a molecular beam of OCS parent molecules in the ground state (nu2=0mid R:JM=10) or in the first excited bending state (nu2=1mid R:JlM=111). At 230 nm photolysis the Im[a1 (1)(parallel, perpendicular)] moment for the fast S(1D2) channel increases by about 50% when the initial OCS parent state changes from the vibrationless ground state to the first excited bending state. No dependence on the initial bending state is found for photolysis at 223 nm. We observe separate rings in the slow channel of the velocity distribution of S(1D2) correlating to single CO(J) rotational states. The additional available energy for photolysis at 223 nm is found to be channeled mostly into the CO(J) rotational motion. An improved value for the OC-S bond energy D0=4.292 eV is reported. 相似文献
107.
108.
Alves GA Amato S Anjos JC Appel JA Astorga J Bracker SB Cremaldi LM Dagenhart WD Darling CL Dixon RL Errede D Fenker HC Gay C Green DR Jedicke R Karchin PE Kennedy C Kwan S Lueking LH de Mello Neto JR Metheny J Milburn RH de Miranda JM da Motta Filho H Napier A Passmore D Rafatian A dos Reis AC Ross WR Santoro AF Sheaff M Souza MH Spalding WJ Stoughton C Streetman ME Summers DJ Takach SF Wallace A Wu Z 《Physical review letters》1996,77(12):2392-2395
109.
110.