作者机构：
[李天然] Department of Mathematics, Hunan City College, Yiyang, 413000, China;[陈传淼] Institute of Computation, Hunan Normal University, Changsha, 410081, China
期刊：
Nuclear Science and Engineering,2004年147(1):63-72 ISSN：0029-5639
通讯作者：
Fan, S
作者机构：
[Fan, S] Inst Atom Energy, Beijing 102413, Peoples R China.;Shanghai Univ, Shanghai Appl Radiat Inst, Shanghai 201800, Peoples R China.;Hunan City Univ, Dept Phys, Yiyang 413049, Peoples R China.;N China Elect Power Univ, Beijing 102206, Peoples R China.;NW Univ Xian, Dept Phys, Xian 710006, Peoples R China.
通讯机构：
[Fan, S] I;Inst Atom Energy, Beijing 102413, Peoples R China.
摘要：
To simplify the calculation, some assumptions are considered in the current work. The preequilibrium emission in the first step in the equilibrium process, which is characterized by exciton n = 3 and "never come back, " is considered in the preequilibrium emission process; the alpha emission is only completed with the neutron and proton emission, and the second particle emission is neglected. Under those assumptions, a semiempirical systematics of the cross section for the (n, a) reaction is obtained on the basis of the evaporation and exciton models for the energies ranging up to 20 Me V Within the nuclide mass region of 23 less than or equal to A < 209, a strong dependence on (N - Z + 1)/A and the incident neutron has been observed. The predictions of the semiempirical systematics with the global parameter of the excitation functions for the (n,alpha) reaction are in good agreement with the experimental data.
作者机构：
[Xia, QL] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Peoples R China.;Hunan City Univ, Dept Phys & Elect Sci, Yiyang 413049, Peoples R China.
通讯机构：
[Xia, QL] C;Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Peoples R China.
关键词：
非线性克莱茵-高登方程;类结致密子;非简谐格子;对称势
摘要：
We study the moving compacton-like kink in the system of a purely anharmonic lattice with symmetric onsite potential by a direct algebraic method. It is found that the localization of the compactons is related to the nonlinear coupling parameter Cnl and the potential barrier height V0 of the double well potential, and the velocity of the propagation of the compacton is determined by the localization parameter q and the potential barrier height V0. Numerical calculation results demonstrate that the compacton is stable when it moves along the lattice chain.
摘要：
We have obtained the parameter-phase diagram, which unambiguously defines the parameter region for the use of InAs/GaAs quantum dot as two-level quantum system in quantum computation in the framework of the effective-mass envelope function theory. Moreover, static electric field is found to efficiently prolong decoherence time. As a result, decoherence time may reach the order of magnitude of milli-seconds as external static electric field goes beyond 20 kV/cm if only vacuum fluctuation is taken as the main source for decoherence. Our calculated results are useful for guiding the solid-state implementation of quantum computing.
作者机构：
[潘留仙] Department of Physics, Hunan City College, Yiyang 413049, China;[周光辉] Department of Physics, Physics/Information Science College, Hunan Normal University, Changsha 410081, China;[李乐群] Hunan Propagating Medium Prof. Coll., Changsha 410000, China
摘要：
We report on the theoretical study of the interaction of the quantum dot (QD) exciton with the photon waveguide models in a semiconductor microcavity. The InAs/GaAs self-assembled QD exciton energies are calculated in a microcavity. The calculated results reveal that the electromagnetic field reduces the exciton energies in a semiconductor microcavity. The effect of the electromagnetic field decreases as the radius of the QD increases. Our calculated results are useful for designing and fabricating photoelectron devices.
期刊：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,1994年142(2):K59-K64 ISSN：1862-6300
通讯作者：
SHUI, JP
作者机构：
[CHIAO, CL; SHUI, JP] YIYANG TEACHERS COLL,DEPT PHYS,YIYANG 413049,PEOPLES R CHINA.;[SHUI, JP] ACAD SINICA,INST SOLID STATE PHYS,INTERNAL FRICT & DEFECTS SOLIDS LAB,HEFEI 230031,PEOPLES R CHINA.
通讯机构：
[SHUI, JP] A;ACAD SINICA,INST SOLID STATE PHYS,INTERNAL FRICT & DEFECTS SOLIDS LAB,HEFEI 230031,PEOPLES R CHINA.
摘要：
Information concerning the effect of pre-heat treatments upon the internal friction behaviour of amorphous palladium silicon alloys during multiple isothermal annealing at different or same temperatures was presented. The reversible behaviour of structural relaxation was observed experimentally.
