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291.
Polarization dynamics are considered in the presence of an anisotropic Kerr non-linearity in the most common semiconductor waveguide geometry. The equations of motion are formulated in terms of Stokes polarization parameters and their Hamiltonian form is derived. Stationary solutions and their stability are found for plane-wave propagation. It is found that the non-integrable problem of mixed-polarization spatial soliton dynamics can be largely explained in terms of the equivalent plane-wave solutions. 相似文献
292.
The thermodynamic and transport properties of normal disordered conductors are strongly influenced by the proximity of a superconductor.
A cooperation between mesoscopic coherence and Andreev scattering of particles from the superconductor generates new types
of interference phenomena. A field theoretic approach is introduced which is capable of exploring both the averaged properties
and mesoscopic fluctuations of superconductor/normal-metal systems. As an example the method is applied to the study of the
level statistics of a SNS junction.
Pis’ma Zh. éksp. Teor. Fiz. 67, No. 1, 21–26 (10 January 1998)
Published in English in the original Russian journal. Edited by Steve Torstveit. 相似文献
293.
D. B. Saakian 《JETP Letters》1998,67(6):440-444
A layered random spin model, equivalent to the generalized random energy model (GREM), is introduced. In analogy with diluted
spin systems, a diluted GREM (DGREM) is constructed. It can be applied to calculate approximately the thermodynamic properties
of spin glass models in low dimensions. For the Edwards-Anderson model it gives the correct critical dimension and 5% accuracy
for the ground state energy in two dimensions.
Pis’ma Zh. éksp. Teor. Fiz. 67, No. 6, 415–419 (25 March 1998)
Published in English in the original Russian journal. Edited by Steve Torstveit. 相似文献
294.
The 351 nm laser-damage thresholds (at 0.7 nm pulse length) of monomeric liquid crystals are reported and results from aromatic-core samples are compared with those from fully saturated systems. The role of π-electron conjugation is examined and identified as the key cause for laser damage. For UV laser compatibility of devices, the damage behaviour of an alignment-layer polymer (nylon 6/6) was also investigated. 相似文献
295.
Translated from Vychislitel'nye Kompleksy i Modelirovanie Slozhnykh Sistem, pp. 138–141, Moscow State University, 1989. 相似文献
296.
Two organic scintillators — NE104 and a liquid solution of 2,5 diphenyloxazole (PPO) — were investigated through positron annihilation spectroscopy to study the influence of the structural order on the magnetic quenching effect on positron bound systems in solids.Preliminary note in [11] 相似文献
297.
M. D. Bavizhev V. L. Burlikov V. I. Simanchuk A. V. Kargapol'tsev 《Russian Physics Journal》1991,34(8):727-730
Experimental data on the generation of acoustic radiation in solid targets by pulsed high-energy proton beams are outlined. The features of ultrasound generation in solids by beams of heavy charged particles are analyzed, and the possibility of using the acoustic effect of heavy charged particles to investigate the interaction between radiation and condensed media and to determine particle energies is shown.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 95–99, August, 1991. 相似文献
298.
299.
R. Klein R. Grieser L. Hoog G. Huber I. Klaft P. Merz T. Kühl S. Schröder M. Grieser D. Habs W. Petrich D. Schwalm 《Zeitschrift für Physik A Hadrons and Nuclei》1992,342(4):455-461
We have performed for the first time precision spectroscopy on a coasting fast7Li+ ion beam in a storage ring. The ion beam moving with 6.4% speed of light was first electron cooled and then merged with two counterpropagating laser beams acting on two different hyperfine transitions sharing a common upper level (λ-system). One laser was frequency locked to thea 3 127J2 hfs frequency component established as a secondary frequency standard at 514 nm. The second laser was tuned over theλ-resonance, which was recorded relative to127J2 hfs components. This experiment is sensitive to the time dilation in fast moving frames and will lead to new limits for the verification of special relatively. The present status of the experiment and perspectives in accuracy are discussed. 相似文献
300.
The stable quasistationary mixing of ternary gas mixtures in a system of two chambers connected by a capillary is described
by a theoretical model which predicts the density distribution of the mixture along the length of the diffusion channel. It
is demonstrated that inversion of the density gradient can occur due to a nonlinear concentration distribution of the heavy
component in a diffusion “gate” effect. The results obtained using this model are compared with the experimental data.
Zh. Tekh. Fiz. 68, 14–17 (May 1998) 相似文献