//www.getgobooth.com/ 必威体育下载 daily 15 2024-10-08 13:42:52 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-10-08 13:42:52 zh Copyright ©Acta Physica Sinica All Rights Reserved. 京ICP备05002789号-1 Address: PostCode：100190 Phone: 010-82649829，82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 //www.getgobooth.com/en/article/doi/10.7498/aps.39.337 Author(s): SHEN YOU-GEN <br/><p>In the higher-dimensional space-time, the metric coefficients g00 and g11 of both the Schwarzschild and Reissner-Nordstr?m metrics satify the relation g00g11 =-1. Byconsidering that rhe relation between the metric coefficients is valid inside a chargedperfect-fluid distribution, and assuming the mass density σ=σ0rbe-λ(r)/2, weobtain an exact interior solution far a static charged sphere in the higher-dimensional space-time.</p> <br/>Acta Physica Sinica. 1990 39(3): 337-342. Published 2005-06-22 Author(s): SHEN YOU-GEN <br/><p>In the higher-dimensional space-time, the metric coefficients g00 and g11 of both the Schwarzschild and Reissner-Nordstr?m metrics satify the relation g00g11 =-1. Byconsidering that rhe relation between the metric coefficients is valid inside a chargedperfect-fluid distribution, and assuming the mass density σ=σ0rbe-λ(r)/2, weobtain an exact interior solution far a static charged sphere in the higher-dimensional space-time.</p> <br/>Acta Physica Sinica. 1990 39(3): 337-342. Published 2005-06-22 EXACT INTERIOR SOLUTION FOR A STATIC CHAGED SPHERE IN THE HIGHER DIMENSIONAL SPACE TIME SHEN YOU-GEN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 337-342. article doi:10.7498/aps.39.337 10.7498/aps.39.337 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.337 337-342 //www.getgobooth.com/en/article/doi/10.7498/aps.39.343 Author(s): ZHENG QING-ZHANG <br/><p>In this paper, we have proposed a multiple wires homogeneous suspending fashion for gravitational waves antenna, showed that the strain caused by suspending in the antenna can be reduced arbitrarily to avoid the additional noise excited by restricted phonons, and also proved that the influence of this suspending fashion upon the eigen frequency and the Q factor of the antenna can be neglected. Thus, this suspending fashion may be a perfect supporting scheme.</p> <br/>Acta Physica Sinica. 1990 39(3): 343-350. Published 2005-06-22 Author(s): ZHENG QING-ZHANG <br/><p>In this paper, we have proposed a multiple wires homogeneous suspending fashion for gravitational waves antenna, showed that the strain caused by suspending in the antenna can be reduced arbitrarily to avoid the additional noise excited by restricted phonons, and also proved that the influence of this suspending fashion upon the eigen frequency and the Q factor of the antenna can be neglected. Thus, this suspending fashion may be a perfect supporting scheme.</p> <br/>Acta Physica Sinica. 1990 39(3): 343-350. Published 2005-06-22 A NEW SUPPORTING SCHEME FOR GRAVITATIONAL WAVES ANTENNA ZHENG QING-ZHANG 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 343-350. article doi:10.7498/aps.39.343 10.7498/aps.39.343 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.343 343-350 //www.getgobooth.com/en/article/doi/10.7498/aps.39.351 Author(s): YU XI-LING, JIN HUI-QIANG, YAN GUANG-HUI, WANG GUANG-RUI, CHEN SHI-GANG <br/><p>In this paper, through the discrimination of Farrey sequence and the demonstration of bistable states of the forced Brusselator with weak coupling, it is shown that its phase diagram has the same topological structure with that of the circle map.</p> <br/>Acta Physica Sinica. 1990 39(3): 351-358. Published 2005-06-22 Author(s): YU XI-LING, JIN HUI-QIANG, YAN GUANG-HUI, WANG GUANG-RUI, CHEN SHI-GANG <br/><p>In this paper, through the discrimination of Farrey sequence and the demonstration of bistable states of the forced Brusselator with weak coupling, it is shown that its phase diagram has the same topological structure with that of the circle map.</p> <br/>Acta Physica Sinica. 1990 39(3): 351-358. Published 2005-06-22 FORCED BRUSSELATOR AND CIRCULAR MAPPING YU XI-LING, JIN HUI-QIANG, YAN GUANG-HUI, WANG GUANG-RUI, CHEN SHI-GANG 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 351-358. article doi:10.7498/aps.39.351 10.7498/aps.39.351 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.351 351-358 //www.getgobooth.com/en/article/doi/10.7498/aps.39.359 Author(s): XIANG TIAN-XIANG <br/><p>In this paper, a theoretical model for vibrational predissociation (VP) of molecular clusters via intermediate states is proposed. It is shown that molecular intermediate states play an important role in inducing VP processes of molecular clusters. Based on this theory, a statistical dynamics model is established to describe and interpret qualitatively and semiquantatively the experimental line-broadening effects in various molecular clusters. Finally, we discuss the effects of a variety of coupling mechanisms on the energetic structures and the state relaxation processes in molecular clusters.</p> <br/>Acta Physica Sinica. 1990 39(3): 359-366. Published 2005-06-22 Author(s): XIANG TIAN-XIANG <br/><p>In this paper, a theoretical model for vibrational predissociation (VP) of molecular clusters via intermediate states is proposed. It is shown that molecular intermediate states play an important role in inducing VP processes of molecular clusters. Based on this theory, a statistical dynamics model is established to describe and interpret qualitatively and semiquantatively the experimental line-broadening effects in various molecular clusters. Finally, we discuss the effects of a variety of coupling mechanisms on the energetic structures and the state relaxation processes in molecular clusters.</p> <br/>Acta Physica Sinica. 1990 39(3): 359-366. Published 2005-06-22 A THEORETICAL MODEL OF VIBRATIONAL PREDISSOCIA-TION VIA INTERMEDIATE STATE COUPLING XIANG TIAN-XIANG 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 359-366. article doi:10.7498/aps.39.359 10.7498/aps.39.359 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.359 359-366 //www.getgobooth.com/en/article/doi/10.7498/aps.39.367 Author(s): HUANG GUO-SONG, ZHOU FENG, GU SHAO-TING, ZHANG GUO-XUAN, CHEN ZE-XING <br/><p>The theoretical analysis and experimental result of steady-state thermal distortion in hollow cylinder lasers are given in this paper. The basic considerations of a 1 kW average power Nd: glass hollow cylinder laser are presented.</p> <br/>Acta Physica Sinica. 1990 39(3): 367-374. Published 2005-06-22 Author(s): HUANG GUO-SONG, ZHOU FENG, GU SHAO-TING, ZHANG GUO-XUAN, CHEN ZE-XING <br/><p>The theoretical analysis and experimental result of steady-state thermal distortion in hollow cylinder lasers are given in this paper. The basic considerations of a 1 kW average power Nd: glass hollow cylinder laser are presented.</p> <br/>Acta Physica Sinica. 1990 39(3): 367-374. Published 2005-06-22 THERMAL DISTORTION OF Nd: GLASS HOLLOW CYLINDER LASERS HUANG GUO-SONG, ZHOU FENG, GU SHAO-TING, ZHANG GUO-XUAN, CHEN ZE-XING 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 367-374. article doi:10.7498/aps.39.367 10.7498/aps.39.367 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.367 367-374 //www.getgobooth.com/en/article/doi/10.7498/aps.39.375 Author(s): SHUAI ZHI-GANG, SUN XIN, FU ROU-LI <br/><p>The third order optical nonlinearity in 1-d conducting polymers are investigated with a simple model. The relevant physical effects on the nonlinear polarization are analysed. For third harmonic generation our result is in good accordance with the experiment of prestine polyacetylene.</p> <br/>Acta Physica Sinica. 1990 39(3): 375-380. Published 2005-06-22 Author(s): SHUAI ZHI-GANG, SUN XIN, FU ROU-LI <br/><p>The third order optical nonlinearity in 1-d conducting polymers are investigated with a simple model. The relevant physical effects on the nonlinear polarization are analysed. For third harmonic generation our result is in good accordance with the experiment of prestine polyacetylene.</p> <br/>Acta Physica Sinica. 1990 39(3): 375-380. Published 2005-06-22 NONLINEAR OPTICAL EFFECTS IN CONDUCTING POLYMERS SHUAI ZHI-GANG, SUN XIN, FU ROU-LI 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 375-380. article doi:10.7498/aps.39.375 10.7498/aps.39.375 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.375 375-380 //www.getgobooth.com/en/article/doi/10.7498/aps.39.381 Author(s): LI FU-BIN <br/><p>We consider a system with a single locally conservative field in a slab geometry with different densities maintained at the two surfaces of the slab. On the basis of flutuating hydro-dynamics, we show that the static-density correlations are long ranged and decay as - l/│x-y│d-2 for dimension d≥3 over distances small compared to the size of the slab.</p> <br/>Acta Physica Sinica. 1990 39(3): 381-390. Published 2005-06-22 Author(s): LI FU-BIN <br/><p>We consider a system with a single locally conservative field in a slab geometry with different densities maintained at the two surfaces of the slab. On the basis of flutuating hydro-dynamics, we show that the static-density correlations are long ranged and decay as - l/│x-y│d-2 for dimension d≥3 over distances small compared to the size of the slab.</p> <br/>Acta Physica Sinica. 1990 39(3): 381-390. Published 2005-06-22 LONG RANGE CORRELATIONS FOR MICROSCOPIC STOCHA-STIC DYNAMICS IN A NONEQUILIBRIUM STEADY STATE (Ⅰ)——CONSTRUCTION OF THE THEORY OF FLUCTUATING HYDRODYNAMICS IN TERMS OF A STOCHASTIC LATTICE GAS MODEL LI FU-BIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 381-390. article doi:10.7498/aps.39.381 10.7498/aps.39.381 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.381 381-390 //www.getgobooth.com/en/article/doi/10.7498/aps.39.391 Author(s): LI FU-BIN <br/><p>As a particle model, we investigate a stochastic lattice gas with Kawasaki dynamics. We establish the connection with the fluctuating hydrodynamics. In the case of hard core interaction only we prove the validity of fluctuating hydrodynamics and obtain the corrections which are presumably model dependent.</p> <br/>Acta Physica Sinica. 1990 39(3): 391-398. Published 2005-06-22 Author(s): LI FU-BIN <br/><p>As a particle model, we investigate a stochastic lattice gas with Kawasaki dynamics. We establish the connection with the fluctuating hydrodynamics. In the case of hard core interaction only we prove the validity of fluctuating hydrodynamics and obtain the corrections which are presumably model dependent.</p> <br/>Acta Physica Sinica. 1990 39(3): 391-398. Published 2005-06-22 LONG RANGE CORRELATIONS FOR MICROSCOPIC STOCHA-STIC DYNAMICS IN A NONEQUILIBRIUM STEADY STATE (Ⅱ)——PROVE FOR THE CORRECTNESS OF A MICROSCOPIC STOCHASTIC DYNAMICALMODEL LI FU-BIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 391-398. article doi:10.7498/aps.39.391 10.7498/aps.39.391 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.391 391-398 //www.getgobooth.com/en/article/doi/10.7498/aps.39.399 Author(s): LUO YAO-QUAN, WANG LONG, YANG SI-ZE, CHEN YAN-PING, QI XIA-ZHI, LI ZAN-LIANG, WANG WEN-SHU, LI WEN-LAI, ZHAO HUA, TANG JI-HUI, TAN FU-CHUAN <br/><p>Obvious heating effects have been observed in RF heating experiments on CT-6B tokamak, in which microwave beams of frequencies 34.34 GHz and 20.1 GHz generated by two gyrotron systems were launched from top and outside of the device, respectively. It is shown that these heating effects arise becouse of the different heating mechanisms. The former is due mainly to the resonance heating of O mode. The latter belongs to down shift-over dense heating. Its heating mechanism may be the nonlinear phenomena occuring near the high density cut off layer of X mode. A kind of nonlinear heating phenomena (secondary heating) has been observed in two experiments, which may come from the different physical mechanisms.</p> <br/>Acta Physica Sinica. 1990 39(3): 399-407. Published 2005-06-22 Author(s): LUO YAO-QUAN, WANG LONG, YANG SI-ZE, CHEN YAN-PING, QI XIA-ZHI, LI ZAN-LIANG, WANG WEN-SHU, LI WEN-LAI, ZHAO HUA, TANG JI-HUI, TAN FU-CHUAN <br/><p>Obvious heating effects have been observed in RF heating experiments on CT-6B tokamak, in which microwave beams of frequencies 34.34 GHz and 20.1 GHz generated by two gyrotron systems were launched from top and outside of the device, respectively. It is shown that these heating effects arise becouse of the different heating mechanisms. The former is due mainly to the resonance heating of O mode. The latter belongs to down shift-over dense heating. Its heating mechanism may be the nonlinear phenomena occuring near the high density cut off layer of X mode. A kind of nonlinear heating phenomena (secondary heating) has been observed in two experiments, which may come from the different physical mechanisms.</p> <br/>Acta Physica Sinica. 1990 39(3): 399-407. Published 2005-06-22 ELECTRON CYCLOTRON WAVE HEATING EXPERIMENT ON CT-6B TOKAMAK LUO YAO-QUAN, WANG LONG, YANG SI-ZE, CHEN YAN-PING, QI XIA-ZHI, LI ZAN-LIANG, WANG WEN-SHU, LI WEN-LAI, ZHAO HUA, TANG JI-HUI, TAN FU-CHUAN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 399-407. article doi:10.7498/aps.39.399 10.7498/aps.39.399 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.399 399-407 //www.getgobooth.com/en/article/doi/10.7498/aps.39.408 Author(s): CHEN KE-MING, JIN GAO-LONG, SHENG CHI, ZHOU GUO-LIANG, JIANG WEI-DONG, ZHANG XIANG-JIU, YU MING-REN <br/><p>Reflection High Energy Electron Diffraction (RHEED) intensity oscillations during the growth of alternating Ge and Si layers were observed, and the growth behavior during molecular beam epitaxy of Ge/Si ultra-thin multi-layered structures on Si(l00) and Si(lll) substrates has been studied. By using RHEED intensity oscillation, we have fabricated the Ge(2ML)/Si(2ML) and Ge(4ML)/Si(4ML) ultra-thin superlattices by phase-locking method.</p> <br/>Acta Physica Sinica. 1990 39(3): 408-415. Published 2005-06-22 Author(s): CHEN KE-MING, JIN GAO-LONG, SHENG CHI, ZHOU GUO-LIANG, JIANG WEI-DONG, ZHANG XIANG-JIU, YU MING-REN <br/><p>Reflection High Energy Electron Diffraction (RHEED) intensity oscillations during the growth of alternating Ge and Si layers were observed, and the growth behavior during molecular beam epitaxy of Ge/Si ultra-thin multi-layered structures on Si(l00) and Si(lll) substrates has been studied. By using RHEED intensity oscillation, we have fabricated the Ge(2ML)/Si(2ML) and Ge(4ML)/Si(4ML) ultra-thin superlattices by phase-locking method.</p> <br/>Acta Physica Sinica. 1990 39(3): 408-415. Published 2005-06-22 PHASE-LOCKED EPITAXY OF Ge/Si SUPERLATTICES BY USING RHEED INTENSITY OSCILLATIONS CHEN KE-MING, JIN GAO-LONG, SHENG CHI, ZHOU GUO-LIANG, JIANG WEI-DONG, ZHANG XIANG-JIU, YU MING-REN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 408-415. article doi:10.7498/aps.39.408 10.7498/aps.39.408 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.408 408-415 //www.getgobooth.com/en/article/doi/10.7498/aps.39.416 Author(s): WU YU-KUN, MENG XIANG-MIN, HE LUN-XING, GUO KE-XIN <br/><p>X-ray diffraction showed that the conventionally solidified A165Cu20 Co15 alloy consistes mainly of 2-D decagonal quasicrystal (T phase). SEM reveals that T phase formed the perfect morphology of prismoid with 10/m or 10/mmm symmetry. The bounded planes of primoid correspond to the strong spots in the electron diffraction pattern of T phase.</p> <br/>Acta Physica Sinica. 1990 39(3): 416-419. Published 2005-06-22 Author(s): WU YU-KUN, MENG XIANG-MIN, HE LUN-XING, GUO KE-XIN <br/><p>X-ray diffraction showed that the conventionally solidified A165Cu20 Co15 alloy consistes mainly of 2-D decagonal quasicrystal (T phase). SEM reveals that T phase formed the perfect morphology of prismoid with 10/m or 10/mmm symmetry. The bounded planes of primoid correspond to the strong spots in the electron diffraction pattern of T phase.</p> <br/>Acta Physica Sinica. 1990 39(3): 416-419. Published 2005-06-22 Al65Cu20Co15 DECAGONAL QUASICRYSTAL WU YU-KUN, MENG XIANG-MIN, HE LUN-XING, GUO KE-XIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 416-419. article doi:10.7498/aps.39.416 10.7498/aps.39.416 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.416 416-419 //www.getgobooth.com/en/article/doi/10.7498/aps.39.420 Author(s): XIANG JIN-ZHONG, ZHENG ZHI-HAO, XIONG JING, ZHANG FENG-QING <br/><p>Diamond-like carbon (DLC) films, prepared by RF plasma CVD, were implanted at a dose of 5×1015Ar/cm2 with various ion energy of 50, 100, 140, 180 keV. Before and after ion implantation, IR absorption spectra, Raman spectra, optical gap Eopt, hydrogen contents and resistivities were measured. The results show that C-H bonds are destroyed and sp2 and sp3 components are decreased during implantation. While the ratio of (sp2/sp3) increases with ion energy. The Eopt, resistivities and hydrogen contents decrease with ion energy increasing. Ho-wever, at 180 keV, the above parameters have no evident change. These results are also discussed in this paper.</p> <br/>Acta Physica Sinica. 1990 39(3): 420-423. Published 2005-06-22 Author(s): XIANG JIN-ZHONG, ZHENG ZHI-HAO, XIONG JING, ZHANG FENG-QING <br/><p>Diamond-like carbon (DLC) films, prepared by RF plasma CVD, were implanted at a dose of 5×1015Ar/cm2 with various ion energy of 50, 100, 140, 180 keV. Before and after ion implantation, IR absorption spectra, Raman spectra, optical gap Eopt, hydrogen contents and resistivities were measured. The results show that C-H bonds are destroyed and sp2 and sp3 components are decreased during implantation. While the ratio of (sp2/sp3) increases with ion energy. The Eopt, resistivities and hydrogen contents decrease with ion energy increasing. Ho-wever, at 180 keV, the above parameters have no evident change. These results are also discussed in this paper.</p> <br/>Acta Physica Sinica. 1990 39(3): 420-423. Published 2005-06-22 DIAMOND-LIKE CARBON FILMS IMPLANTED WITH VARIOUS ION ENERGY XIANG JIN-ZHONG, ZHENG ZHI-HAO, XIONG JING, ZHANG FENG-QING 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 420-423. article doi:10.7498/aps.39.420 10.7498/aps.39.420 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.420 420-423 //www.getgobooth.com/en/article/doi/10.7498/aps.39.424 Author(s): LIU YAN-ZHANG, FAN XI-QING <br/><p>The infrared divergence response theory is applied to reorientational relaxation process of OH- in KCl: OH to study the behaviour of low temperature ultrasonic absorption in this system. Our calculation results showed that the thermally activated relaxation process makes the main contribution to the ultrasonic absorption for T&lt;4.5K; as for T&lt;4.5K, the tunneling relaxation process can not been neglected.</p> <br/>Acta Physica Sinica. 1990 39(3): 424-428. Published 2005-06-22 Author(s): LIU YAN-ZHANG, FAN XI-QING <br/><p>The infrared divergence response theory is applied to reorientational relaxation process of OH- in KCl: OH to study the behaviour of low temperature ultrasonic absorption in this system. Our calculation results showed that the thermally activated relaxation process makes the main contribution to the ultrasonic absorption for T&lt;4.5K; as for T&lt;4.5K, the tunneling relaxation process can not been neglected.</p> <br/>Acta Physica Sinica. 1990 39(3): 424-428. Published 2005-06-22 INFRARED DIVERGENCE RESPONSE OF STRUCTURAL RELAXATION IN KCl:OH LIU YAN-ZHANG, FAN XI-QING 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 424-428. article doi:10.7498/aps.39.424 10.7498/aps.39.424 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.424 424-428 //www.getgobooth.com/en/article/doi/10.7498/aps.39.429 Author(s): PENG JING-CUI <br/><p>Light absorption of polydiacetylene chains has been investigated using Green's function. In tight-binding approximation, we defined a Hamiltonian at first, then computed two-electron Green's function using random phase approximation, discussed some properties of excited-states for PDA's, calculated light absorption spectra and compared with experiments.</p> <br/>Acta Physica Sinica. 1990 39(3): 429-436. Published 2005-06-22 Author(s): PENG JING-CUI <br/><p>Light absorption of polydiacetylene chains has been investigated using Green's function. In tight-binding approximation, we defined a Hamiltonian at first, then computed two-electron Green's function using random phase approximation, discussed some properties of excited-states for PDA's, calculated light absorption spectra and compared with experiments.</p> <br/>Acta Physica Sinica. 1990 39(3): 429-436. Published 2005-06-22 LIGHT ABSORPTION OF POLYDIACETYLENE CHAINS ——GREEN'S FUNCTION STUDY PENG JING-CUI 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 429-436. article doi:10.7498/aps.39.429 10.7498/aps.39.429 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.429 429-436 //www.getgobooth.com/en/article/doi/10.7498/aps.39.437 Author(s): DUAN WEN-HUI, GU BING-LIN, ZHU JIA-LIN <br/><p>The electronic structure of CdSe, CdTe and SnSe are studied using the first-principle scalar-relativistic LMTO-ASA method in the local-density approximation. In the calculation, extra "empty" spheres are introduced on high-symmetry interstitial sites in zinc-blende crystal structure and NaCl crystal structure, and a correction for the leading non-spherical component of the crystal potential is incorporated. The calculated results are compared with the experiment and other non-self consistent calculation.</p> <br/>Acta Physica Sinica. 1990 39(3): 437-445. Published 2005-06-22 Author(s): DUAN WEN-HUI, GU BING-LIN, ZHU JIA-LIN <br/><p>The electronic structure of CdSe, CdTe and SnSe are studied using the first-principle scalar-relativistic LMTO-ASA method in the local-density approximation. In the calculation, extra "empty" spheres are introduced on high-symmetry interstitial sites in zinc-blende crystal structure and NaCl crystal structure, and a correction for the leading non-spherical component of the crystal potential is incorporated. The calculated results are compared with the experiment and other non-self consistent calculation.</p> <br/>Acta Physica Sinica. 1990 39(3): 437-445. Published 2005-06-22 ELECTRONIC STRUCTURE OF CHALCOGEN COMPOUNDS CdSe, CdTe AND SnSe DUAN WEN-HUI, GU BING-LIN, ZHU JIA-LIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 437-445. article doi:10.7498/aps.39.437 10.7498/aps.39.437 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.437 437-445 //www.getgobooth.com/en/article/doi/10.7498/aps.39.446 Author(s): MAO HUI-MING, SHAO JIN-SHAN, WANG HONG-WEI, FENG WEI-GUO, SUN XIN <br/><p>For the quasi one-dimensional electron systems with coulomb interaction, a new model is presented. The form of effective Coulomb potential is derived. Based on the correlated wave function theory, the many-body wave function is obtained on the basis of the collective oscillation behavior of the electron gas. The pair correlation functions and correlation energies of the different electron densities are obtained. The pair correlation functions obtained in this paper are positive definite and satisfy the normalization condition.</p> <br/>Acta Physica Sinica. 1990 39(3): 446-456. Published 2005-06-22 Author(s): MAO HUI-MING, SHAO JIN-SHAN, WANG HONG-WEI, FENG WEI-GUO, SUN XIN <br/><p>For the quasi one-dimensional electron systems with coulomb interaction, a new model is presented. The form of effective Coulomb potential is derived. Based on the correlated wave function theory, the many-body wave function is obtained on the basis of the collective oscillation behavior of the electron gas. The pair correlation functions and correlation energies of the different electron densities are obtained. The pair correlation functions obtained in this paper are positive definite and satisfy the normalization condition.</p> <br/>Acta Physica Sinica. 1990 39(3): 446-456. Published 2005-06-22 VARIATIONAL CALCULATION FOR ELECTRON CORRELA-TIONS OF QUASI ONE-DIMENSIONAL SYSTEM MAO HUI-MING, SHAO JIN-SHAN, WANG HONG-WEI, FENG WEI-GUO, SUN XIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 446-456. article doi:10.7498/aps.39.446 10.7498/aps.39.446 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.446 446-456 //www.getgobooth.com/en/article/doi/10.7498/aps.39.457 Author(s): MA YU-QIANG, LI ZHEN-YA <br/><p>In this paper, starting from the relation between two distinct topological structure, we propose a simple self-consistent method based on the Maxwell-Garnett theory, in order to improve the Bruggeman's effective medium theory (mean-field-type approximation). We derive a general expression for the effective conductivity of a two-phase random composite system. The theoretical results on electric and thermal conductivity for some real materials are in good agreement with experimental data.</p> <br/>Acta Physica Sinica. 1990 39(3): 457-463. Published 2005-06-22 Author(s): MA YU-QIANG, LI ZHEN-YA <br/><p>In this paper, starting from the relation between two distinct topological structure, we propose a simple self-consistent method based on the Maxwell-Garnett theory, in order to improve the Bruggeman's effective medium theory (mean-field-type approximation). We derive a general expression for the effective conductivity of a two-phase random composite system. The theoretical results on electric and thermal conductivity for some real materials are in good agreement with experimental data.</p> <br/>Acta Physica Sinica. 1990 39(3): 457-463. Published 2005-06-22 EFFECTIVE-MEDIUM THEORY FOR TWO-PHASE RANDOM COMPOSITE/SYSTEM MA YU-QIANG, LI ZHEN-YA 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 457-463. article doi:10.7498/aps.39.457 10.7498/aps.39.457 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.457 457-463 //www.getgobooth.com/en/article/doi/10.7498/aps.39.464 Author(s): YUAN HAO-XIN, LI QI-GUANG, JIANG SHAN, LU WEI, TONG FEI-MING, TANG DING-YUAN <br/><p>Theoretical and experimental studies have been made about the electrical characteristics of Hg1-xCdxTe n+-p photodiodes with x=0.5 at room temperature and at hydrostatic pressures up to 2GPa. The observed "anomalous" pressure dependence of the current-voltage characteristics of p-n junctions, which exhibits in the small bias region, has been satisfactorily explained using a theory which takes into account the pressure dependence of deep levels and its effect on deep level-assisted tunneling current. By fitting the dark current to this theory, two deep levels, D1(=Ev + 0.75Eg) and D2( = Ev+0.5Eg), as well as their respective electron and hole lifetimes, were obtained. The pressure coefficients of deep levels in undoped Hg1-x Cdx Te were also obtained.</p> <br/>Acta Physica Sinica. 1990 39(3): 464-471. Published 2005-06-22 Author(s): YUAN HAO-XIN, LI QI-GUANG, JIANG SHAN, LU WEI, TONG FEI-MING, TANG DING-YUAN <br/><p>Theoretical and experimental studies have been made about the electrical characteristics of Hg1-xCdxTe n+-p photodiodes with x=0.5 at room temperature and at hydrostatic pressures up to 2GPa. The observed "anomalous" pressure dependence of the current-voltage characteristics of p-n junctions, which exhibits in the small bias region, has been satisfactorily explained using a theory which takes into account the pressure dependence of deep levels and its effect on deep level-assisted tunneling current. By fitting the dark current to this theory, two deep levels, D1(=Ev + 0.75Eg) and D2( = Ev+0.5Eg), as well as their respective electron and hole lifetimes, were obtained. The pressure coefficients of deep levels in undoped Hg1-x Cdx Te were also obtained.</p> <br/>Acta Physica Sinica. 1990 39(3): 464-471. Published 2005-06-22 HYDROSTATIC PRESSURE STUDIES OF DEEP LEVELS AND RELATED CURRENT MECHANISMS IN Hg1-xCdxTe n+-P PHOTODIODES YUAN HAO-XIN, LI QI-GUANG, JIANG SHAN, LU WEI, TONG FEI-MING, TANG DING-YUAN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 464-471. article doi:10.7498/aps.39.464 10.7498/aps.39.464 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.464 464-471 //www.getgobooth.com/en/article/doi/10.7498/aps.39.472 Author(s): DU YOU-WEI, QIU ZI-QIANG, TANG HUAN, J. C. WALKER <br/><p>The relation between magnetic ordering and superconductivity of YBa2Cu3O7-δ was studied by M?ssbauer effect with 57Fe as probe in Cu lattice. The experimental results can be under-stood qualitatively by non-phonon superconductivity mechanism.</p> <br/>Acta Physica Sinica. 1990 39(3): 472-478. Published 2005-06-22 Author(s): DU YOU-WEI, QIU ZI-QIANG, TANG HUAN, J. C. WALKER <br/><p>The relation between magnetic ordering and superconductivity of YBa2Cu3O7-δ was studied by M?ssbauer effect with 57Fe as probe in Cu lattice. The experimental results can be under-stood qualitatively by non-phonon superconductivity mechanism.</p> <br/>Acta Physica Sinica. 1990 39(3): 472-478. Published 2005-06-22 M?SSBAUER STUDY OF MAGNETIC ORDERING IN YBa2Cu3O7-δ DU YOU-WEI, QIU ZI-QIANG, TANG HUAN, J. C. WALKER 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 472-478. article doi:10.7498/aps.39.472 10.7498/aps.39.472 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.472 472-478 //www.getgobooth.com/en/article/doi/10.7498/aps.39.479 Author(s): TANG GUI-DE, HAN BAO-SHAN <br/><p>The dependence of the magnetic torque of single crystal GGG (Gd3Ga5O12) substrates on their geometry and some related physical parameters were studied. A method was proposed to deduce the substrate contribution in determining the uniaxial anisotropy constant Ku and magnetocrystalline one K1. Both Ku and K1 can be acquired from the magnetic torque curves by employing the two-variable regression and using computer. As example, the measured curves of Ku and K1 as a function of temperature were presented.</p> <br/>Acta Physica Sinica. 1990 39(3): 479-485. Published 2005-06-22 Author(s): TANG GUI-DE, HAN BAO-SHAN <br/><p>The dependence of the magnetic torque of single crystal GGG (Gd3Ga5O12) substrates on their geometry and some related physical parameters were studied. A method was proposed to deduce the substrate contribution in determining the uniaxial anisotropy constant Ku and magnetocrystalline one K1. Both Ku and K1 can be acquired from the magnetic torque curves by employing the two-variable regression and using computer. As example, the measured curves of Ku and K1 as a function of temperature were presented.</p> <br/>Acta Physica Sinica. 1990 39(3): 479-485. Published 2005-06-22 DETERMINATION OF THE ANISOTROPY CONSTANTS Ku AND K1 OF GARNET BUBBLE FILMS BY MEASURING TORQUE CURVES TANG GUI-DE, HAN BAO-SHAN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 479-485. article doi:10.7498/aps.39.479 10.7498/aps.39.479 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.479 479-485 //www.getgobooth.com/en/article/doi/10.7498/aps.39.486 Author(s): ZHONG JIAN <br/><p>By means of linearized Holstein-Primakoff transformation and Green function theory, the spin wave dispersion curves are obtained for superlattices consisting of two kinds of Heisenberg antiferromagnetic layers. It is interesting that the results are different in cases that a super-cell contains odd or even number of atomic planes, implying differences in physical properties.</p> <br/>Acta Physica Sinica. 1990 39(3): 486-490. Published 2005-06-22 Author(s): ZHONG JIAN <br/><p>By means of linearized Holstein-Primakoff transformation and Green function theory, the spin wave dispersion curves are obtained for superlattices consisting of two kinds of Heisenberg antiferromagnetic layers. It is interesting that the results are different in cases that a super-cell contains odd or even number of atomic planes, implying differences in physical properties.</p> <br/>Acta Physica Sinica. 1990 39(3): 486-490. Published 2005-06-22 SPIN WAVE SPECTRUM IN HEISENBERG ANTIFERRO-MAGNETIC SUPERLATTICES ZHONG JIAN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 486-490. article doi:10.7498/aps.39.486 10.7498/aps.39.486 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.486 486-490 //www.getgobooth.com/en/article/doi/10.7498/aps.39.491 Author(s): XU XIU-YING, ZHANG XING-KUI, FENG DUAN, Lü PENG <br/><p>Birefringence image of a large hexagonal lamellar inclusion have been observed in GGG single crystal. The strain field of inclusion and long-rang strain field are analyzed with Brace-Kohler compensator. The theoretical calculation and computer simulation are in agreement with the result of experiment.</p> <br/>Acta Physica Sinica. 1990 39(3): 491-494. Published 2005-06-22 Author(s): XU XIU-YING, ZHANG XING-KUI, FENG DUAN, Lü PENG <br/><p>Birefringence image of a large hexagonal lamellar inclusion have been observed in GGG single crystal. The strain field of inclusion and long-rang strain field are analyzed with Brace-Kohler compensator. The theoretical calculation and computer simulation are in agreement with the result of experiment.</p> <br/>Acta Physica Sinica. 1990 39(3): 491-494. Published 2005-06-22 BIREFRINGENCE IMAGE OF A LARGE HEXAGONAL LAMELLAR INCLUSION AND COMPUTER SIMULATION XU XIU-YING, ZHANG XING-KUI, FENG DUAN, Lü PENG 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 491-494. article doi:10.7498/aps.39.491 10.7498/aps.39.491 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.491 491-494 //www.getgobooth.com/en/article/doi/10.7498/aps.39.495 Author(s): LU WEI, YU ZHI-YI, YE HONG-JUAN, XU WEN-LAN, MA KE-JUN, SHEN XUE-CHU <br/><p>The far infrared reflection spectra of Hg1-xMnx Te with different composition in the temperature region of 4.2-300 K are reported. It is demonstrated that there are a gap mode as well as a local mode associated with impurity Mn in HgTe. The gap mode has a frequency of 97 cm-1. The theoretical analysis of the gap mode has been proceeded.</p> <br/>Acta Physica Sinica. 1990 39(3): 495-500. Published 2005-06-22 Author(s): LU WEI, YU ZHI-YI, YE HONG-JUAN, XU WEN-LAN, MA KE-JUN, SHEN XUE-CHU <br/><p>The far infrared reflection spectra of Hg1-xMnx Te with different composition in the temperature region of 4.2-300 K are reported. It is demonstrated that there are a gap mode as well as a local mode associated with impurity Mn in HgTe. The gap mode has a frequency of 97 cm-1. The theoretical analysis of the gap mode has been proceeded.</p> <br/>Acta Physica Sinica. 1990 39(3): 495-500. Published 2005-06-22 A STUDY ON THE FAR INFRARED REFLECTION SPECTRA OF Hg1-xMnxTe LU WEI, YU ZHI-YI, YE HONG-JUAN, XU WEN-LAN, MA KE-JUN, SHEN XUE-CHU 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 495-500. article doi:10.7498/aps.39.495 10.7498/aps.39.495 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.495 495-500 //www.getgobooth.com/en/article/doi/10.7498/aps.39.501 Author(s): WANG ZHEN-XIA, PAN JI-SHENG, CHEN SHOU-MIAN, ZHENG LI-PING, TAO ZHEN-LAN, WANG CHENG-BAO, ZHANG HUI-MING, ZHANG WEI-PING, LU ZHAO-LUN <br/><p>Individual sputtering angular distributions and partial sputtering yields of Ni and Pd from Ni-Pd alloy have been measured at different temperatures, by using the Rutherford back-scattering spectrometry (RBS). The experimental results indicate that the partial sputtering yields of both Ni and Pd have a great change near the Curie temperature (the temperature of magnetic phase-transition of Ni-Pd alloy). Furthermore, the change of Pd partial sputtering: yield is greater than that of Ni. Ni is the preferentially sputtering element, but its preferential sputtering extent decreases during the magnetic phase-transition as taget temperature increases. The phenomena seem to be caused by the reduction of surface binding energies during the magnetic phase-transition, the surface segregation and the enhanced diffusion induced by-ion bombardment.</p> <br/>Acta Physica Sinica. 1990 39(3): 501-506. Published 2005-06-22 Author(s): WANG ZHEN-XIA, PAN JI-SHENG, CHEN SHOU-MIAN, ZHENG LI-PING, TAO ZHEN-LAN, WANG CHENG-BAO, ZHANG HUI-MING, ZHANG WEI-PING, LU ZHAO-LUN <br/><p>Individual sputtering angular distributions and partial sputtering yields of Ni and Pd from Ni-Pd alloy have been measured at different temperatures, by using the Rutherford back-scattering spectrometry (RBS). The experimental results indicate that the partial sputtering yields of both Ni and Pd have a great change near the Curie temperature (the temperature of magnetic phase-transition of Ni-Pd alloy). Furthermore, the change of Pd partial sputtering: yield is greater than that of Ni. Ni is the preferentially sputtering element, but its preferential sputtering extent decreases during the magnetic phase-transition as taget temperature increases. The phenomena seem to be caused by the reduction of surface binding energies during the magnetic phase-transition, the surface segregation and the enhanced diffusion induced by-ion bombardment.</p> <br/>Acta Physica Sinica. 1990 39(3): 501-506. Published 2005-06-22 PREFERENTIAL SPUTTERING FROM Ni-Pd ALLOY AT ELEVATED TEMPERATURES WANG ZHEN-XIA, PAN JI-SHENG, CHEN SHOU-MIAN, ZHENG LI-PING, TAO ZHEN-LAN, WANG CHENG-BAO, ZHANG HUI-MING, ZHANG WEI-PING, LU ZHAO-LUN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 501-506. article doi:10.7498/aps.39.501 10.7498/aps.39.501 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.501 501-506 //www.getgobooth.com/en/article/doi/10.7498/aps.39.507 Author(s): DENG ZHONG-MIN <br/><p>The effect of ageing on resistivity, thermoelectromotive power vs Pt and specific heat of the Ni-14.5Cr-1.5Si(wt%) alloy was studied. After quenching, this alloy experiences a transformation from disorder to short range order. Results showed that the resistivity inereased signifitantly by ageing, but the thermoelectromotive power and specific heat increased only slightly. X-ray diffraction analysis showed that this is caused by the formation of the δ-second phase, which is a Ni2Si compound.</p> <br/>Acta Physica Sinica. 1990 39(3): 507-510. Published 2005-06-22 Author(s): DENG ZHONG-MIN <br/><p>The effect of ageing on resistivity, thermoelectromotive power vs Pt and specific heat of the Ni-14.5Cr-1.5Si(wt%) alloy was studied. After quenching, this alloy experiences a transformation from disorder to short range order. Results showed that the resistivity inereased signifitantly by ageing, but the thermoelectromotive power and specific heat increased only slightly. X-ray diffraction analysis showed that this is caused by the formation of the δ-second phase, which is a Ni2Si compound.</p> <br/>Acta Physica Sinica. 1990 39(3): 507-510. Published 2005-06-22 THE EFFECT OF AGEING ON SOME PROPERTIES OF THE Ni-14.5Cr-1.5Si(wt%) ALLOY DENG ZHONG-MIN 2005-06-22 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1990 39(3): 507-510. article doi:10.7498/aps.39.507 10.7498/aps.39.507 Acta Physica Sinica 39 3 2005-06-22 //www.getgobooth.com/en/article/doi/10.7498/aps.39.507 507-510

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