//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:38 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:38 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.33.897 Author(s): MAO DE-QIANG, LI MING-FU, REN SHANG-YUAN <br/><p>By using Koster-Slater Green's function method and on-site defect potential approximation, a systematic method of A1 symmetric deep level wavefunction calculation of substitutional defect pairs is worked out. The method is applied to the spectator-oxygen pairs in GaP successfully. The Zn-O and Cd-O pair wavefunctions are obtained for the first time. The wavefunction is mainly concentrated on four bonds which locate at four nearest neighbour sites of oxygen center and point toward the oxygen. Nevertheless, the four bonds are not in the equal weight. The component of the bond which links spectator with oxygen is reduced in comparison with other three and it is more reduced for more electropositive spectator. The rest part of the wavefunction extends diversely over a wide range of space.</p> <br/>Acta Physica Sinica. 1984 33(7): 897-907. Published 2005-03-25 Author(s): MAO DE-QIANG, LI MING-FU, REN SHANG-YUAN <br/><p>By using Koster-Slater Green's function method and on-site defect potential approximation, a systematic method of A1 symmetric deep level wavefunction calculation of substitutional defect pairs is worked out. The method is applied to the spectator-oxygen pairs in GaP successfully. The Zn-O and Cd-O pair wavefunctions are obtained for the first time. The wavefunction is mainly concentrated on four bonds which locate at four nearest neighbour sites of oxygen center and point toward the oxygen. Nevertheless, the four bonds are not in the equal weight. The component of the bond which links spectator with oxygen is reduced in comparison with other three and it is more reduced for more electropositive spectator. The rest part of the wavefunction extends diversely over a wide range of space.</p> <br/>Acta Physica Sinica. 1984 33(7): 897-907. Published 2005-03-25 A1 SYMMETRIC DEEP LEVEL WAVEFUNCTION OF SUBSTITUTIONAL DEFECT PAIRS IN GaP MAO DE-QIANG, LI MING-FU, REN SHANG-YUAN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 897-907. article doi:10.7498/aps.33.897 10.7498/aps.33.897 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.897 897-907 //www.getgobooth.com/en/article/doi/10.7498/aps.33.908 Author(s): WANG WEN-KUI <br/><p>We find that the amorphous alloy Ti80Si20 wouldn't decompose into multiphases, but rather transform directly into bcc supersaturate solid solution of Ti (Si). This phenomena may be attributed to the lower elastic energy created by solid solution and the comparatively large compressibility of Ti.</p> <br/>Acta Physica Sinica. 1984 33(7): 908-913. Published 2005-03-25 Author(s): WANG WEN-KUI <br/><p>We find that the amorphous alloy Ti80Si20 wouldn't decompose into multiphases, but rather transform directly into bcc supersaturate solid solution of Ti (Si). This phenomena may be attributed to the lower elastic energy created by solid solution and the comparatively large compressibility of Ti.</p> <br/>Acta Physica Sinica. 1984 33(7): 908-913. Published 2005-03-25 CRYSTALLIZATION OF AMORPHOUS Ti80Si20 ALLOY UNDER HIGH PRESSURE WANG WEN-KUI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 908-913. article doi:10.7498/aps.33.908 10.7498/aps.33.908 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.908 908-913 //www.getgobooth.com/en/article/doi/10.7498/aps.33.914 Author(s): WANG WEN-KUI, HE SHU-AN, H. IWASAKI, Y. SYONO, T. GOTO <br/><p>In this work, the structures of crystalline phases formed from the amorphous Co80B20 alloy under pressures from ambinent pressure to 770 kbar has been investigated. The results obtained are compared with those on amorphous Fe-B alloys.</p> <br/>Acta Physica Sinica. 1984 33(7): 914-920. Published 2005-03-25 Author(s): WANG WEN-KUI, HE SHU-AN, H. IWASAKI, Y. SYONO, T. GOTO <br/><p>In this work, the structures of crystalline phases formed from the amorphous Co80B20 alloy under pressures from ambinent pressure to 770 kbar has been investigated. The results obtained are compared with those on amorphous Fe-B alloys.</p> <br/>Acta Physica Sinica. 1984 33(7): 914-920. Published 2005-03-25 PHASES STABILITY OF AN AMORPHOUS Co80B20 ALLOY UNDER HIGH-TEMPERATURE AND HIGH-PRESSURE WANG WEN-KUI, HE SHU-AN, H. IWASAKI, Y. SYONO, T. GOTO 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 914-920. article doi:10.7498/aps.33.914 10.7498/aps.33.914 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.914 914-920 //www.getgobooth.com/en/article/doi/10.7498/aps.33.921 Author(s): MAI ZHEN-HONG, CUI SHU-FAN, LIN JIAN, Lü YAN <br/><p>The relationship between the annealing temperatures and the hydrogen-induced defects in floating zone silicon grown in hydrogen atmosphere has been investigated by X-ray section topography. According to the analysis of X-ray topographic patterns of the early stage hydrogen-induced defects, it is found that the lattices around hydrogen precipitates are under compression. The processes of the breakdown of silicon-hydrogen bonds and the formation of hydrogen-induced defects are discussed briefly.</p> <br/>Acta Physica Sinica. 1984 33(7): 921-926. Published 2005-03-25 Author(s): MAI ZHEN-HONG, CUI SHU-FAN, LIN JIAN, Lü YAN <br/><p>The relationship between the annealing temperatures and the hydrogen-induced defects in floating zone silicon grown in hydrogen atmosphere has been investigated by X-ray section topography. According to the analysis of X-ray topographic patterns of the early stage hydrogen-induced defects, it is found that the lattices around hydrogen precipitates are under compression. The processes of the breakdown of silicon-hydrogen bonds and the formation of hydrogen-induced defects are discussed briefly.</p> <br/>Acta Physica Sinica. 1984 33(7): 921-926. Published 2005-03-25 STUDY OF HYDROGEN-INDUCED DEFECTS IN FLOATING ZONE SILICON GROWN IN HYDROGEN ATMOSPHERE MAI ZHEN-HONG, CUI SHU-FAN, LIN JIAN, Lü YAN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 921-926. article doi:10.7498/aps.33.921 10.7498/aps.33.921 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.921 921-926 //www.getgobooth.com/en/article/doi/10.7498/aps.33.927 Author(s): FU PAN-MING <br/><p>We have studied the saturation effect of degenerate four-wave mixing in Doppler-broadened two-level system. A set of recurrent formula which is suitable for numerical analysis is derived and applied to calculate the lineshape of four-wave mixing signal in the weak saturation region. The results show that a double-peak structure appears at the line center as the intensity of the incident light increases.</p> <br/>Acta Physica Sinica. 1984 33(7): 927-934. Published 2005-03-25 Author(s): FU PAN-MING <br/><p>We have studied the saturation effect of degenerate four-wave mixing in Doppler-broadened two-level system. A set of recurrent formula which is suitable for numerical analysis is derived and applied to calculate the lineshape of four-wave mixing signal in the weak saturation region. The results show that a double-peak structure appears at the line center as the intensity of the incident light increases.</p> <br/>Acta Physica Sinica. 1984 33(7): 927-934. Published 2005-03-25 THE SATURATION EFFECT OF DEGENERATE FOUR-WAVE MIXING IN DOPPLER-BROADENED SYSTEM FU PAN-MING 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 927-934. article doi:10.7498/aps.33.927 10.7498/aps.33.927 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.927 927-934 //www.getgobooth.com/en/article/doi/10.7498/aps.33.935 Author(s): FANG HONG-LIE, FU SHU-FEN, G. T. MOORE <br/><p>The stationary pulse solutions for a free electron laser are obtained by using the classical theory. Computation shows that the stationary solutions can only be found under certain particular conditions. The shapes of the solutions do not depend on the shapes of initial optical pulses as long as these conditions are satisfied.</p> <br/>Acta Physica Sinica. 1984 33(7): 935-942. Published 2005-03-25 Author(s): FANG HONG-LIE, FU SHU-FEN, G. T. MOORE <br/><p>The stationary pulse solutions for a free electron laser are obtained by using the classical theory. Computation shows that the stationary solutions can only be found under certain particular conditions. The shapes of the solutions do not depend on the shapes of initial optical pulses as long as these conditions are satisfied.</p> <br/>Acta Physica Sinica. 1984 33(7): 935-942. Published 2005-03-25 STATIONARY PULSE SOLUTIONS FOR A FREE ELECTRON LASER FANG HONG-LIE, FU SHU-FEN, G. T. MOORE 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 935-942. article doi:10.7498/aps.33.935 10.7498/aps.33.935 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.935 935-942 //www.getgobooth.com/en/article/doi/10.7498/aps.33.943 Author(s): YANG YUAN, YANG PEI-FANG, YU WEI-HAI <br/><p>The relationship of the conductivity with frequency for an amorphous fast lithium ion conducting material B2O3-0.7Li2O-0.7LiCl was studied. The results showed that: in a quite wide frequency range the bulk conductance was equal to the total conductance for the specimens; the frequency spectra of the conductivity showed a plateau and a rise in the intermediate and higher frequency range, respectively; and the frequency at which the conductivity began to increase became higher with rising of temperature. As a result of the features of such amorphous material, the measurement of the conductivity may be carried out by use of the a.c. bridge or the a.c. V-A method and thus be simplified. Considering the effect of the long range disorder in the non-crystalline solid on the ionic transport, we praposed a mechanism of the local polarization and explained the features of the spectra of conductivity and its dependence on temperature.</p> <br/>Acta Physica Sinica. 1984 33(7): 943-951. Published 2005-03-25 Author(s): YANG YUAN, YANG PEI-FANG, YU WEI-HAI <br/><p>The relationship of the conductivity with frequency for an amorphous fast lithium ion conducting material B2O3-0.7Li2O-0.7LiCl was studied. The results showed that: in a quite wide frequency range the bulk conductance was equal to the total conductance for the specimens; the frequency spectra of the conductivity showed a plateau and a rise in the intermediate and higher frequency range, respectively; and the frequency at which the conductivity began to increase became higher with rising of temperature. As a result of the features of such amorphous material, the measurement of the conductivity may be carried out by use of the a.c. bridge or the a.c. V-A method and thus be simplified. Considering the effect of the long range disorder in the non-crystalline solid on the ionic transport, we praposed a mechanism of the local polarization and explained the features of the spectra of conductivity and its dependence on temperature.</p> <br/>Acta Physica Sinica. 1984 33(7): 943-951. Published 2005-03-25 STUDY ON THE FREQUECY DEPENDENCE OF THE CONDUCTIVITY OF AMORPHOUS B2O3-0.7Li2O-0.7LiCl YANG YUAN, YANG PEI-FANG, YU WEI-HAI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 943-951. article doi:10.7498/aps.33.943 10.7498/aps.33.943 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.943 943-951 //www.getgobooth.com/en/article/doi/10.7498/aps.33.952 Author(s): ZHANG YU-HENG, WANG JUN <br/><p>The quantum diffraction of the superconducting weaklink and the quantum interference of the dc-SQUID have been calculated theoretically based on the constant current source ESJ modle. An analytical expression describing the constant amplitude oscillation of the dc voltoge component with magnetic field for double junction de-SQUID has been obtained.</p> <br/>Acta Physica Sinica. 1984 33(7): 952-958. Published 2005-03-25 Author(s): ZHANG YU-HENG, WANG JUN <br/><p>The quantum diffraction of the superconducting weaklink and the quantum interference of the dc-SQUID have been calculated theoretically based on the constant current source ESJ modle. An analytical expression describing the constant amplitude oscillation of the dc voltoge component with magnetic field for double junction de-SQUID has been obtained.</p> <br/>Acta Physica Sinica. 1984 33(7): 952-958. Published 2005-03-25 THE RELATIONS BETWEEN VOLTAGE AND MAGNETIC FIELD OF SUPERCONDUCTING WEAKLINK(Ⅰ) ZHANG YU-HENG, WANG JUN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 952-958. article doi:10.7498/aps.33.952 10.7498/aps.33.952 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.952 952-958 //www.getgobooth.com/en/article/doi/10.7498/aps.33.959 Author(s): ZHANG YU-HENG, WANG JUN <br/><p>In this paper, the superconducting weaklink and the influence of the feed back radiation on its I-V curve is studied, based on the constant source RSJ model. The analytical solution has been obtained and the relationship between the change of the I-V curve and the feedback radiation field intensity from the cavity has been given for the case while the field is very weak. The theoretical results show that the feedback radiation can change the amplitude and shape of V(H), but its period is unchanged.</p> <br/>Acta Physica Sinica. 1984 33(7): 959-966. Published 2005-03-25 Author(s): ZHANG YU-HENG, WANG JUN <br/><p>In this paper, the superconducting weaklink and the influence of the feed back radiation on its I-V curve is studied, based on the constant source RSJ model. The analytical solution has been obtained and the relationship between the change of the I-V curve and the feedback radiation field intensity from the cavity has been given for the case while the field is very weak. The theoretical results show that the feedback radiation can change the amplitude and shape of V(H), but its period is unchanged.</p> <br/>Acta Physica Sinica. 1984 33(7): 959-966. Published 2005-03-25 THE RELATIONS BETWEEN VOLTAGE AND MAGNETIC FIELD OF SUPERCONDUCTING WEAKLINK(Ⅱ) ZHANG YU-HENG, WANG JUN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 959-966. article doi:10.7498/aps.33.959 10.7498/aps.33.959 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.959 959-966 //www.getgobooth.com/en/article/doi/10.7498/aps.33.967 Author(s): GONG CHANG-DE, XING DING-YU, LIU MIE <br/><p>The McMillan tunneling model has been generalized and applied to a N-S multi-film structure with thickness of each film smaller than the superconducting coherent length. The order parameters and superconducting critical temperature of the structure are calculated, and the possibilities of enhancing Tc by modifying the electron-phonon coupling and contaminating with different atom in the interface regions are also discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 967-974. Published 2005-03-25 Author(s): GONG CHANG-DE, XING DING-YU, LIU MIE <br/><p>The McMillan tunneling model has been generalized and applied to a N-S multi-film structure with thickness of each film smaller than the superconducting coherent length. The order parameters and superconducting critical temperature of the structure are calculated, and the possibilities of enhancing Tc by modifying the electron-phonon coupling and contaminating with different atom in the interface regions are also discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 967-974. Published 2005-03-25 DISCUSSION ON THE SUPERCONDUCTING CRITICAL TEMPERATURE IN A N-S MULTI-FILM STRUCTURE GONG CHANG-DE, XING DING-YU, LIU MIE 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 967-974. article doi:10.7498/aps.33.967 10.7498/aps.33.967 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.967 967-974 //www.getgobooth.com/en/article/doi/10.7498/aps.33.975 Author(s): WU HANG-SHENG, WENG ZHEN-YU <br/><p>A formula of the critical temperature for superconductors with small λ is derived from the Eliashberg equation. The effective phonon spectrum is taken in the present paper as the Einstein spectrum. The values of Tc calculated from our formula are compared with the numerical solutions of the Eliashberg equation in the case of μ*= 0 and the agreement between them is fairly well in the region of λ&lt;Λ.</p> <br/>Acta Physica Sinica. 1984 33(7): 975-988. Published 2005-03-25 Author(s): WU HANG-SHENG, WENG ZHEN-YU <br/><p>A formula of the critical temperature for superconductors with small λ is derived from the Eliashberg equation. The effective phonon spectrum is taken in the present paper as the Einstein spectrum. The values of Tc calculated from our formula are compared with the numerical solutions of the Eliashberg equation in the case of μ*= 0 and the agreement between them is fairly well in the region of λ&lt;Λ.</p> <br/>Acta Physica Sinica. 1984 33(7): 975-988. Published 2005-03-25 THEORY OF THE CRITICAL TEMPERATURE FOR SUPERCONDUCTORS WITH SMALL λ (Ⅰ) WU HANG-SHENG, WENG ZHEN-YU 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 975-988. article doi:10.7498/aps.33.975 10.7498/aps.33.975 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.975 975-988 //www.getgobooth.com/en/article/doi/10.7498/aps.33.989 Author(s): SUN ZONG-QI <br/><p>The micro-diffusion equation for Zener pairs and asymmetric pairs of point defects in fcc metals under the action of periodic distributional moving sources of inner stress have been solved by using finite Fourier transformation and Laplace transformation. Finite sum formulae for rigidity and damping coefficient of a kink have been obtained.Numerical results are given. A simple analytic result is obtained for anelastic interaction between edge dislocation and asymmetric pairs of point defects, which is found to be in agreement with other results based on a different approach.The enhanced internal friction due to the interaction between dislocation and point defects is discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 989-998. Published 2005-03-25 Author(s): SUN ZONG-QI <br/><p>The micro-diffusion equation for Zener pairs and asymmetric pairs of point defects in fcc metals under the action of periodic distributional moving sources of inner stress have been solved by using finite Fourier transformation and Laplace transformation. Finite sum formulae for rigidity and damping coefficient of a kink have been obtained.Numerical results are given. A simple analytic result is obtained for anelastic interaction between edge dislocation and asymmetric pairs of point defects, which is found to be in agreement with other results based on a different approach.The enhanced internal friction due to the interaction between dislocation and point defects is discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 989-998. Published 2005-03-25 ANELASTIC INTERACTION BETWEEN MOVING KINK AND MOBILE PAIRS OF POINT DEFECTS SUN ZONG-QI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 989-998. article doi:10.7498/aps.33.989 10.7498/aps.33.989 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.989 989-998 //www.getgobooth.com/en/article/doi/10.7498/aps.33.999 Author(s): SU ZHAO-BING, YU LU, ZHOU GUANG-ZHAO <br/><p>The set of coupled, self-consistent equations for the order parameter, the fermion field and the collective excitations developed previously in the framework of the closed time-path Green's functions (CTPGF) is applied to systems with four-fermion interaction. The Hartree, the Hartree-Pock (HP) and the random phase approximations (RPA) for the order parameter and its fluctuations are derived in a systematic way. The thermodynamical potential for the fermion system is calculated explicitly in these approximations. The formalism presented here can be applied to nuclear as well as other many fermion systems in both equilibrium and nonequilibrium states.</p> <br/>Acta Physica Sinica. 1984 33(7): 999-1007. Published 2005-03-25 Author(s): SU ZHAO-BING, YU LU, ZHOU GUANG-ZHAO <br/><p>The set of coupled, self-consistent equations for the order parameter, the fermion field and the collective excitations developed previously in the framework of the closed time-path Green's functions (CTPGF) is applied to systems with four-fermion interaction. The Hartree, the Hartree-Pock (HP) and the random phase approximations (RPA) for the order parameter and its fluctuations are derived in a systematic way. The thermodynamical potential for the fermion system is calculated explicitly in these approximations. The formalism presented here can be applied to nuclear as well as other many fermion systems in both equilibrium and nonequilibrium states.</p> <br/>Acta Physica Sinica. 1984 33(7): 999-1007. Published 2005-03-25 THE GENERALIZED MEAN FIELD EXPANSIONS FOR MANY FERMION SYSTEMS SU ZHAO-BING, YU LU, ZHOU GUANG-ZHAO 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 999-1007. article doi:10.7498/aps.33.999 10.7498/aps.33.999 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.999 999-1007 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1008 Author(s): WANG GUANG-RUI, ZHANG SHU-YU, HAO BAI-LIN <br/><p>Detailed numerical study shows that along certain directions in the parameter space the periodicity of the forced Brusselator appears in the same order as that in one-dimensional nuimodal mappings, i.e. in accordance with the U-sequence of Metropolis, stein and Stein. We find a simple method to assign words from a symbolic dynamics of two letters to periods in the model. Our results show the neccesity to enlarge the parameter space in similar research ia order to have a global picture of the bifurcation and chaos "spectrum".</p> <br/>Acta Physica Sinica. 1984 33(7): 1008-1016. Published 2005-03-25 Author(s): WANG GUANG-RUI, ZHANG SHU-YU, HAO BAI-LIN <br/><p>Detailed numerical study shows that along certain directions in the parameter space the periodicity of the forced Brusselator appears in the same order as that in one-dimensional nuimodal mappings, i.e. in accordance with the U-sequence of Metropolis, stein and Stein. We find a simple method to assign words from a symbolic dynamics of two letters to periods in the model. Our results show the neccesity to enlarge the parameter space in similar research ia order to have a global picture of the bifurcation and chaos "spectrum".</p> <br/>Acta Physica Sinica. 1984 33(7): 1008-1016. Published 2005-03-25 U-SEQUENCE OF PERIODIC SOLUTIONS IN THE FORCED BRUSSELATOR WANG GUANG-RUI, ZHANG SHU-YU, HAO BAI-LIN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1008-1016. article doi:10.7498/aps.33.1008 10.7498/aps.33.1008 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1008 1008-1016 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1017 Author(s): SONG ZENG-FU, LIA SHO-REN, GUI YOU-XI, JIANG JIE, HUA DAO-HONG, WANG SHU-KUN, HUO YU-TAI <br/><p>The following spectra of LiYF4:Nd have been observed for the first time: (i) the electronic and electron-phonor Raman spectra of the stark sub-levels Y1-Y6 of energy levels 4I11/2 excited by 4880? Ar+ laser beam; (ii) two-photon fluorescence and electron-phonor spectra excited by 6943? ruby laser beam.</p> <br/>Acta Physica Sinica. 1984 33(7): 1017-1023. Published 2005-03-25 Author(s): SONG ZENG-FU, LIA SHO-REN, GUI YOU-XI, JIANG JIE, HUA DAO-HONG, WANG SHU-KUN, HUO YU-TAI <br/><p>The following spectra of LiYF4:Nd have been observed for the first time: (i) the electronic and electron-phonor Raman spectra of the stark sub-levels Y1-Y6 of energy levels 4I11/2 excited by 4880? Ar+ laser beam; (ii) two-photon fluorescence and electron-phonor spectra excited by 6943? ruby laser beam.</p> <br/>Acta Physica Sinica. 1984 33(7): 1017-1023. Published 2005-03-25 THE ELECTRONIC RAMAN SCATTERING AND TWO-PHOTON FLOURESCENCE IN LiYF4:Nd3+ SONG ZENG-FU, LIA SHO-REN, GUI YOU-XI, JIANG JIE, HUA DAO-HONG, WANG SHU-KUN, HUO YU-TAI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1017-1023. article doi:10.7498/aps.33.1017 10.7498/aps.33.1017 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1017 1017-1023 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1024 Author(s): ZHANG HONG-JUN, DAI JIAN-HUA, WANG PENG-YE, JIN CHAO-DING, L. M. NARDUCCI <br/><p>This paper reports the process of bifureation to chaos of the self-pulsing output with the changing of the parameters of the system in a liquid crystal hybrid optical bistable device under the condition of tR&lt;&lt;τ (where tR is the delay time of the feedback system, τ is the relaxation time of the liquid crystal). The bifurcations and chaos are calculated. The dynamical behavior of the system is analysed by the Fast Fourier Transform and the phase portrait. The experimental result is compared with Ikeda's theory.</p> <br/>Acta Physica Sinica. 1984 33(7): 1024-1030. Published 2005-03-25 Author(s): ZHANG HONG-JUN, DAI JIAN-HUA, WANG PENG-YE, JIN CHAO-DING, L. M. NARDUCCI <br/><p>This paper reports the process of bifureation to chaos of the self-pulsing output with the changing of the parameters of the system in a liquid crystal hybrid optical bistable device under the condition of tR&lt;&lt;τ (where tR is the delay time of the feedback system, τ is the relaxation time of the liquid crystal). The bifurcations and chaos are calculated. The dynamical behavior of the system is analysed by the Fast Fourier Transform and the phase portrait. The experimental result is compared with Ikeda's theory.</p> <br/>Acta Physica Sinica. 1984 33(7): 1024-1030. Published 2005-03-25 BIFURCATIONS AND CHAOTIC BEHAVIOR IN LIQUID CRYSTAL HYBRID OPTICAL BISTABLE DEVICES ZHANG HONG-JUN, DAI JIAN-HUA, WANG PENG-YE, JIN CHAO-DING, L. M. NARDUCCI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1024-1030. article doi:10.7498/aps.33.1024 10.7498/aps.33.1024 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1024 1024-1030 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1031 Author(s): XIE YU-ZHANG, RUAN LI-ZHEN <br/><p>The pitch of the mixture MBBA:CC=22.7 :77.3 (by weight) at different tempera-lures ranging from 37℃ to 55℃ is determined by method of Bragg scattering using 6328? He-Ne laser beam. From the present measurement and the published data on other materials, we propose an empirical formula for the temperature dependence of the pitch of cholesterics, namely p=p0-b/(T-T0), with the pitch p0 for dextrorotatory materials. This formula is well suited not only for pure materials but also for mixtures as long as the temperature is not very close to the point of transition or the point of inversion of the helicity of the materials. The constants p0 ,b and T0 for different cholesteric liquid crystals are determined from their related data.</p> <br/>Acta Physica Sinica. 1984 33(7): 1031-1036. Published 2005-03-25 Author(s): XIE YU-ZHANG, RUAN LI-ZHEN <br/><p>The pitch of the mixture MBBA:CC=22.7 :77.3 (by weight) at different tempera-lures ranging from 37℃ to 55℃ is determined by method of Bragg scattering using 6328? He-Ne laser beam. From the present measurement and the published data on other materials, we propose an empirical formula for the temperature dependence of the pitch of cholesterics, namely p=p0-b/(T-T0), with the pitch p0 for dextrorotatory materials. This formula is well suited not only for pure materials but also for mixtures as long as the temperature is not very close to the point of transition or the point of inversion of the helicity of the materials. The constants p0 ,b and T0 for different cholesteric liquid crystals are determined from their related data.</p> <br/>Acta Physica Sinica. 1984 33(7): 1031-1036. Published 2005-03-25 MEASUREMENT OF THE PITCH OF A MBBA-CC MIXTURE AND AN EMPIRICAL FORMULA FOR THE TEMPERA-TURE DEPENDENCE OF THE PITCH OF CHOLESTERICS XIE YU-ZHANG, RUAN LI-ZHEN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1031-1036. article doi:10.7498/aps.33.1031 10.7498/aps.33.1031 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1031 1031-1036 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1037 Author(s): LIANG JIN-ZHONG, LAI ZONG-HE, WU YU-KUN, GUO KE-XIN <br/><p>By tilting the crystals formed in an amorphous Ni-P alloy during crystallization in transmission electron microscope, two further hexagonal metastable phases (a2 and a3) have been discovered. Their lattice parameter a has the same value (6.73?) as that of the previously reported hexagonal metastable phase (a1), but the values of the other lattice parameter c are 3/2 and 4 times respectively of that of the phase a1. This shows that these phases are longperiod polytype structures. Furthermore, the previously assumed F.C.C. sublattice (a=5.50?) of a1 has been found to be really metastable phase from {111} planes of which these hexagonal metastable phases are formed.</p> <br/>Acta Physica Sinica. 1984 33(7): 1037-1039. Published 2005-03-25 Author(s): LIANG JIN-ZHONG, LAI ZONG-HE, WU YU-KUN, GUO KE-XIN <br/><p>By tilting the crystals formed in an amorphous Ni-P alloy during crystallization in transmission electron microscope, two further hexagonal metastable phases (a2 and a3) have been discovered. Their lattice parameter a has the same value (6.73?) as that of the previously reported hexagonal metastable phase (a1), but the values of the other lattice parameter c are 3/2 and 4 times respectively of that of the phase a1. This shows that these phases are longperiod polytype structures. Furthermore, the previously assumed F.C.C. sublattice (a=5.50?) of a1 has been found to be really metastable phase from {111} planes of which these hexagonal metastable phases are formed.</p> <br/>Acta Physica Sinica. 1984 33(7): 1037-1039. Published 2005-03-25 THE HEXAGONAL METASTABLE PHASE FORMED IN AN AMORPHOUS Ni-P ALLOY DURING CRYSTALLIZATION (Ⅲ)——HEXAGONAL POLYTYPE LIANG JIN-ZHONG, LAI ZONG-HE, WU YU-KUN, GUO KE-XIN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1037-1039. article doi:10.7498/aps.33.1037 10.7498/aps.33.1037 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1037 1037-1039 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1040 Author(s): ZHANG GUO-GUANG, LI WAN-TONG, GUO KE-XIN <br/><p>During the martensitic transformation of Co-Al alloys stacking faults occur abundantly and sometimes a local ordered 21R structure can be found by electron diffraction and lattice imaging techniques. It is shown that optical diffraction method is a useful means of studying this kind of local ordered structure.</p> <br/>Acta Physica Sinica. 1984 33(7): 1040-1043. Published 2005-03-25 Author(s): ZHANG GUO-GUANG, LI WAN-TONG, GUO KE-XIN <br/><p>During the martensitic transformation of Co-Al alloys stacking faults occur abundantly and sometimes a local ordered 21R structure can be found by electron diffraction and lattice imaging techniques. It is shown that optical diffraction method is a useful means of studying this kind of local ordered structure.</p> <br/>Acta Physica Sinica. 1984 33(7): 1040-1043. Published 2005-03-25 A LONG PERIOD STRUCTURE 21R IN Co-Al ALLOYS ZHANG GUO-GUANG, LI WAN-TONG, GUO KE-XIN 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1040-1043. article doi:10.7498/aps.33.1040 10.7498/aps.33.1040 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1040 1040-1043 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1044 Author(s): ZHANG DE-HAI <br/><p>This paper supposes that N=8 Extended Supergravity (ESG) can form the composite supermultiplets, and discusses the possibility of containing SU(5) Supersymme-tric Grand Unification Theory (SUSY GUT) in both composite supermultiplets {3/2,8}N=8SU(8) and {2,28}N=8SU(8) Under some harsh assumptions, it is possible to obtain 3 generations of leptons and quarks and satisfactory particle spectrum of SU (5) SUSY GUT in the {3/2,8}N=8SU(8) scheme. Under some reasonable assumptions, it is possible to obtain 5 generations of leptons and quarks (or after some modification, 4 generations) in the {2,28}N=8SU(8) scheme.</p> <br/>Acta Physica Sinica. 1984 33(7): 1044-1049. Published 2005-03-25 Author(s): ZHANG DE-HAI <br/><p>This paper supposes that N=8 Extended Supergravity (ESG) can form the composite supermultiplets, and discusses the possibility of containing SU(5) Supersymme-tric Grand Unification Theory (SUSY GUT) in both composite supermultiplets {3/2,8}N=8SU(8) and {2,28}N=8SU(8) Under some harsh assumptions, it is possible to obtain 3 generations of leptons and quarks and satisfactory particle spectrum of SU (5) SUSY GUT in the {3/2,8}N=8SU(8) scheme. Under some reasonable assumptions, it is possible to obtain 5 generations of leptons and quarks (or after some modification, 4 generations) in the {2,28}N=8SU(8) scheme.</p> <br/>Acta Physica Sinica. 1984 33(7): 1044-1049. Published 2005-03-25 AN ATTEMPT TO EMBED SUSY GUT INTO ESG ZHANG DE-HAI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1044-1049. article doi:10.7498/aps.33.1044 10.7498/aps.33.1044 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1044 1044-1049 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1050 Author(s): CHEN YAN-PING, ZHOU YU-MEI <br/><p>The analytic expressions of local damping rate of ordinary and extraordinary modes in perpendicular propagation have been obtained on the basis of the general expressions of the dielectric tensor for the weakly relativistic anisotropic Maxwellian distribution function. The effects of the anisotropy of the distribution function and loss cone type distribution function on the local damping rate have been discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 1050-1057. Published 2005-03-25 Author(s): CHEN YAN-PING, ZHOU YU-MEI <br/><p>The analytic expressions of local damping rate of ordinary and extraordinary modes in perpendicular propagation have been obtained on the basis of the general expressions of the dielectric tensor for the weakly relativistic anisotropic Maxwellian distribution function. The effects of the anisotropy of the distribution function and loss cone type distribution function on the local damping rate have been discussed.</p> <br/>Acta Physica Sinica. 1984 33(7): 1050-1057. Published 2005-03-25 ECRH IN NON-THERMAL EQUILIBRIUM PLASMAS IN WEAKLY RELATIVISTIC REGIME CHEN YAN-PING, ZHOU YU-MEI 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1050-1057. article doi:10.7498/aps.33.1050 10.7498/aps.33.1050 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1050 1050-1057 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1058 Author(s): YANG RUI-QING, XIONG SHI-JIE, CAI JIAN-HUA <br/><p>Following the line of our interpretation of the conduction behavior of metallie su-perlattices, we have studied the attenuation of sound waves in such artificial materials, with special emphasis on the dependence upon the modulation wavelength. Acoustical experiments may help to justify the physical mechanism of transport processes suggested in [1].</p> <br/>Acta Physica Sinica. 1984 33(7): 1058-1061. Published 2005-03-25 Author(s): YANG RUI-QING, XIONG SHI-JIE, CAI JIAN-HUA <br/><p>Following the line of our interpretation of the conduction behavior of metallie su-perlattices, we have studied the attenuation of sound waves in such artificial materials, with special emphasis on the dependence upon the modulation wavelength. Acoustical experiments may help to justify the physical mechanism of transport processes suggested in [1].</p> <br/>Acta Physica Sinica. 1984 33(7): 1058-1061. Published 2005-03-25 SOUND ATTENUATION IN METALLIC SUPERLATTICES YANG RUI-QING, XIONG SHI-JIE, CAI JIAN-HUA 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1058-1061. article doi:10.7498/aps.33.1058 10.7498/aps.33.1058 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1058 1058-1061 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1062 Author(s): LI HONG-CHENG, D. G. HINKS <br/><p>The process for making Chevrel-phase PbMo6S8 superconducting tapes by reaction diffusion method and the properties of the tapes are reported. Mo tape reacts with H2S to form single phase Mo-S compound (MoS2 or Mo2S3, depends on the reaction temperature), then with Pb vapor to form single phase PbMo6S8 layers. The transition temperature of the layers are 13.0-14.5 K, the widths of the transitions are in the range of 0.15-0.20 K and Jc(6T, 4.2K) ≌1.9×l08A/m2.</p> <br/>Acta Physica Sinica. 1984 33(7): 1062-1064. Published 2005-03-25 Author(s): LI HONG-CHENG, D. G. HINKS <br/><p>The process for making Chevrel-phase PbMo6S8 superconducting tapes by reaction diffusion method and the properties of the tapes are reported. Mo tape reacts with H2S to form single phase Mo-S compound (MoS2 or Mo2S3, depends on the reaction temperature), then with Pb vapor to form single phase PbMo6S8 layers. The transition temperature of the layers are 13.0-14.5 K, the widths of the transitions are in the range of 0.15-0.20 K and Jc(6T, 4.2K) ≌1.9×l08A/m2.</p> <br/>Acta Physica Sinica. 1984 33(7): 1062-1064. Published 2005-03-25 THE SUPERCONDUCTING PROPERTIES OF PbMo6S8 TAPES PREPARED BY REACTION DIFFUSION METHOD LI HONG-CHENG, D. G. HINKS 2005-03-25 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(7): 1062-1064. article doi:10.7498/aps.33.1062 10.7498/aps.33.1062 Acta Physica Sinica 33 7 2005-03-25 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1062 1062-1064

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