//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.38.1041 Author(s): ZHANG WEI-PING, TAN WEI-HAN <br/><p>In the paper, applying the stochastic statistical methods, we obtain the resonant radiation spectrum of a two-level atom ensemble driven by multimode squeezed light. Co-responding to different squeezing degrees of the quantum fluctuations of the driving field, the central peak of radiation spectrum exhibits subnatural-and supernatural-linewidth phenomenon, and in all cases the side peaks are broadened. The positions of the side peaks and the character of symmetry of radiation spectrum depend upon the coherent excitation direction and the squeezing direction of the driving field.</p> <br/>Acta Physica Sinica. 1989 38(7): 1041-1047. Published 2005-07-08 Author(s): ZHANG WEI-PING, TAN WEI-HAN <br/><p>In the paper, applying the stochastic statistical methods, we obtain the resonant radiation spectrum of a two-level atom ensemble driven by multimode squeezed light. Co-responding to different squeezing degrees of the quantum fluctuations of the driving field, the central peak of radiation spectrum exhibits subnatural-and supernatural-linewidth phenomenon, and in all cases the side peaks are broadened. The positions of the side peaks and the character of symmetry of radiation spectrum depend upon the coherent excitation direction and the squeezing direction of the driving field.</p> <br/>Acta Physica Sinica. 1989 38(7): 1041-1047. Published 2005-07-08 RESONANT RADIATION OF ATOM IN SGUEEZED LIGHT FIELD ZHANG WEI-PING, TAN WEI-HAN 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1041-1047. article doi:10.7498/aps.38.1041 10.7498/aps.38.1041 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1041 1041-1047 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1048 Author(s): DING GANG-JIAN, SHANG REN-CHENG, ZHANG LIAN-FANG, WEN KE-LING, HUI QIN, CHEN DIE-YAN <br/><p>A beam of gold atoms was produced by heating the gold containing material by electrothermal method. Two UV laser beams then orthogonally irradiated the atomic beam, exciting the Au atoms to very high Rydberg states from their ground states (6S1/2). A high voltage pulsed electric field was applied to the interaction region approximately 200 ns after the laser pulse, it ionized the Au atoms into Rydberg states. By scanning the wavelength of laser in a certain range, the positions of 38 energy levels of Au atoms in n2D3/2 (n = 18-38) and n2S1/2 (n = 21-34; 36-38) series have been determined. the ionization limits of the n2D3/2 and n2S1/2 series were found to be ED = 74409.8 (3)cm-1 and Es = 74410.0(2) cm-1, respectively, by parametric fitting. The quantum defects of all these levels were also calculated.</p> <br/>Acta Physica Sinica. 1989 38(7): 1048-1055. Published 2005-07-08 Author(s): DING GANG-JIAN, SHANG REN-CHENG, ZHANG LIAN-FANG, WEN KE-LING, HUI QIN, CHEN DIE-YAN <br/><p>A beam of gold atoms was produced by heating the gold containing material by electrothermal method. Two UV laser beams then orthogonally irradiated the atomic beam, exciting the Au atoms to very high Rydberg states from their ground states (6S1/2). A high voltage pulsed electric field was applied to the interaction region approximately 200 ns after the laser pulse, it ionized the Au atoms into Rydberg states. By scanning the wavelength of laser in a certain range, the positions of 38 energy levels of Au atoms in n2D3/2 (n = 18-38) and n2S1/2 (n = 21-34; 36-38) series have been determined. the ionization limits of the n2D3/2 and n2S1/2 series were found to be ED = 74409.8 (3)cm-1 and Es = 74410.0(2) cm-1, respectively, by parametric fitting. The quantum defects of all these levels were also calculated.</p> <br/>Acta Physica Sinica. 1989 38(7): 1048-1055. Published 2005-07-08 EXPERIMENTAL STUDY OF RYDBERG STATES OF AU ATOM DING GANG-JIAN, SHANG REN-CHENG, ZHANG LIAN-FANG, WEN KE-LING, HUI QIN, CHEN DIE-YAN 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1048-1055. article doi:10.7498/aps.38.1048 10.7498/aps.38.1048 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1048 1048-1055 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1056 Author(s): WU YING-JIAN, LI JIA-MING <br/><p>Based on the Hartree-Slater self-consistent field theory, we considere the residual interaction which is omitted in obtaining the Hartree-Slater self-consistent field in previous calculation. We calculate the near threshold photoionization cross sections of K-shell of atomic Ne-and Ne+ ion and the cross section ratios as examples. We discuss the effects of residual interaction and compare our results with experiments.</p> <br/>Acta Physica Sinica. 1989 38(7): 1056-1061. Published 2005-07-08 Author(s): WU YING-JIAN, LI JIA-MING <br/><p>Based on the Hartree-Slater self-consistent field theory, we considere the residual interaction which is omitted in obtaining the Hartree-Slater self-consistent field in previous calculation. We calculate the near threshold photoionization cross sections of K-shell of atomic Ne-and Ne+ ion and the cross section ratios as examples. We discuss the effects of residual interaction and compare our results with experiments.</p> <br/>Acta Physica Sinica. 1989 38(7): 1056-1061. Published 2005-07-08 CORRELATION INTERACTION IN ATOMIC INNER SHELL PHOTOELECTRIC EFFECT WU YING-JIAN, LI JIA-MING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1056-1061. article doi:10.7498/aps.38.1056 10.7498/aps.38.1056 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1056 1056-1061 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1062 Author(s): JIANG QIN, LI ZHEN-YA <br/><p>We use the mean field renormalization group method to treat the semi-infinite Ising ferromagnetic system with the amorphization of the surface. The critical behavior of the surface with a surface random field, including critical temperature, the possibility of tricritical and reentrant phenomena, are investigated in detail.</p> <br/>Acta Physica Sinica. 1989 38(7): 1062-1068. Published 2005-07-08 Author(s): JIANG QIN, LI ZHEN-YA <br/><p>We use the mean field renormalization group method to treat the semi-infinite Ising ferromagnetic system with the amorphization of the surface. The critical behavior of the surface with a surface random field, including critical temperature, the possibility of tricritical and reentrant phenomena, are investigated in detail.</p> <br/>Acta Physica Sinica. 1989 38(7): 1062-1068. Published 2005-07-08 STUDY OF SURFACE MAGNETISM IN A SEMI-INFINITE ISING FERROMAGNETIC SYSTEM JIANG QIN, LI ZHEN-YA 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1062-1068. article doi:10.7498/aps.38.1062 10.7498/aps.38.1062 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1062 1062-1068 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1069 Author(s): LAN TIAN, XU FEI-YUE <br/><p>In this papar,a new atomic structure model of the Si{001}2×1 surface determined from band theory calcution of low-energy-electron diffraction are prensented.The new structure model involves a dimer band length ld = 2.387? and thee atomic layer distances d1 = 0.50±0.01?, d2= 0.96±0.01?, d3 = 1.17±0.01? and two asymmetric displacements of dimer atoms.</p> <br/>Acta Physica Sinica. 1989 38(7): 1069-1076. Published 2005-07-08 Author(s): LAN TIAN, XU FEI-YUE <br/><p>In this papar,a new atomic structure model of the Si{001}2×1 surface determined from band theory calcution of low-energy-electron diffraction are prensented.The new structure model involves a dimer band length ld = 2.387? and thee atomic layer distances d1 = 0.50±0.01?, d2= 0.96±0.01?, d3 = 1.17±0.01? and two asymmetric displacements of dimer atoms.</p> <br/>Acta Physica Sinica. 1989 38(7): 1069-1076. Published 2005-07-08 A NEW ATOMIC STRUCTURE MODEL OF Si {001} 2×1 SURFACE LAN TIAN, XU FEI-YUE 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1069-1076. article doi:10.7498/aps.38.1069 10.7498/aps.38.1069 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1069 1069-1076 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1077 Author(s): LAN TIAN, XU FEI-YUE <br/><p>In this paper, a scalene triangle-dimer-adatom model of the Si(lll)7×7 surface determined from band theory calculation of Low-Energ electron diffraction is prensented. We found the first-layer spacing distance d1 = 0.95±0.02?(expanded 21.3%±0.02?), the second-layer spacing distance d2=0.83±0.02?(expanded 5.9%±0.02?), the third-layer spacing distance d3 = 0.69±0.05?(contracted 10.9%±0.05?) and the fourth-layer spacing distance d4 = 2.38±0.08? (expanded 3.8%±0.08?).</p> <br/>Acta Physica Sinica. 1989 38(7): 1077-1085. Published 2005-07-08 Author(s): LAN TIAN, XU FEI-YUE <br/><p>In this paper, a scalene triangle-dimer-adatom model of the Si(lll)7×7 surface determined from band theory calculation of Low-Energ electron diffraction is prensented. We found the first-layer spacing distance d1 = 0.95±0.02?(expanded 21.3%±0.02?), the second-layer spacing distance d2=0.83±0.02?(expanded 5.9%±0.02?), the third-layer spacing distance d3 = 0.69±0.05?(contracted 10.9%±0.05?) and the fourth-layer spacing distance d4 = 2.38±0.08? (expanded 3.8%±0.08?).</p> <br/>Acta Physica Sinica. 1989 38(7): 1077-1085. Published 2005-07-08 SURFACE ATOMIC STRUCTURE OF THE Si (111) 7×7 SURFACE STUDIED BY LOW-ENERGY ELECTRON DIFFRACTION LAN TIAN, XU FEI-YUE 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1077-1085. article doi:10.7498/aps.38.1077 10.7498/aps.38.1077 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1077 1077-1085 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1086 Author(s): WANG LI-JUN, HOU HONG-QI, ZHOU JUN-MING, TANG RU-MING, LU ZHI-DONG, WANG YAN-YUN, HUANG YI <br/><p>In this article we report the results of photoluminescence studies on In0.25Ga0.75 As-GaAs straiaed quantum wells grown by molecular beam epitaxy under pressure at 77 K. The applied hydrostatic pressure ranges from 0 to 50 kbar. The pressure coefficients of T valley of (InGa)As-GaAs strained quantum wells are presented. We have observed the crossover between the energy level in the well and X valley in the barrier GaAs. With the analysis of its behavior under pressure, the ratio of conduction band offset to valence band offset in In0.25 Ga0.75 As-GaAs heterojunction is determined as Qc =△Ec:△Ev = 0.68:0.32. The theoretical studies on (InGa) AsGaAs strained quantum wells under normal pressure fit the experimental results very well. Some discussions about (AlGa)As-GaAs quantum wells are also included in this paper.</p> <br/>Acta Physica Sinica. 1989 38(7): 1086-1092. Published 2005-07-08 Author(s): WANG LI-JUN, HOU HONG-QI, ZHOU JUN-MING, TANG RU-MING, LU ZHI-DONG, WANG YAN-YUN, HUANG YI <br/><p>In this article we report the results of photoluminescence studies on In0.25Ga0.75 As-GaAs straiaed quantum wells grown by molecular beam epitaxy under pressure at 77 K. The applied hydrostatic pressure ranges from 0 to 50 kbar. The pressure coefficients of T valley of (InGa)As-GaAs strained quantum wells are presented. We have observed the crossover between the energy level in the well and X valley in the barrier GaAs. With the analysis of its behavior under pressure, the ratio of conduction band offset to valence band offset in In0.25 Ga0.75 As-GaAs heterojunction is determined as Qc =△Ec:△Ev = 0.68:0.32. The theoretical studies on (InGa) AsGaAs strained quantum wells under normal pressure fit the experimental results very well. Some discussions about (AlGa)As-GaAs quantum wells are also included in this paper.</p> <br/>Acta Physica Sinica. 1989 38(7): 1086-1092. Published 2005-07-08 PHOTOLUMINESCENCE STUDIES ON InxGa1-xAs-GaAs STRAINED QUANTUM WELLS STRUCTURE UNDER HYDROSTATIC PRESSURE WANG LI-JUN, HOU HONG-QI, ZHOU JUN-MING, TANG RU-MING, LU ZHI-DONG, WANG YAN-YUN, HUANG YI 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1086-1092. article doi:10.7498/aps.38.1086 10.7498/aps.38.1086 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1086 1086-1092 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1093 Author(s): ZHU JIA-LIN <br/><p>Using a novel variational wave function for the ground state of the shallow donor in a narrow GaAs/Ga1-xAlxAs quantum-well, we have calculated the wave function and the binding energy for impurity ground state. The numerical results shown that it is important to describe the coupling between the narrow quantum-well and the impurity potential correctly.</p> <br/>Acta Physica Sinica. 1989 38(7): 1093-1102. Published 2005-07-08 Author(s): ZHU JIA-LIN <br/><p>Using a novel variational wave function for the ground state of the shallow donor in a narrow GaAs/Ga1-xAlxAs quantum-well, we have calculated the wave function and the binding energy for impurity ground state. The numerical results shown that it is important to describe the coupling between the narrow quantum-well and the impurity potential correctly.</p> <br/>Acta Physica Sinica. 1989 38(7): 1093-1102. Published 2005-07-08 COUPLING EFFECT BETWEEN A SHALLOW-IMPURITY POTENTIAL AND A NARROW QUANTUM-WELL ZHU JIA-LIN 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1093-1102. article doi:10.7498/aps.38.1093 10.7498/aps.38.1093 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1093 1093-1102 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1103 Author(s): XUE FANG-SHI <br/><p>In this paper, an analytical energy band easy to calculate for GaAs, AlAs and AlGaAs is proposed. The transfer eigenvalue and energy effective mass are obtained by asing the LCAO transfer matrix model. By studing the transfer eigenrunction for two energy valleys, the transformation between different energy valleys is derived, from which new concepts about symmetry transformer and symmetry filter are suggested. Using the energy effective masses and the transformation coefficients between energy valleys at the interface, we derive the equations of envelope function and their boundary conditions for this single band-double valley model. Applying this theory to GaAs/AlGaAs/AlAs system, the confined energy level and wavefunc-tion are calculated. Finally, the significance of this generalized effective mass theory is discussed.</p> <br/>Acta Physica Sinica. 1989 38(7): 1103-1110. Published 2005-07-08 Author(s): XUE FANG-SHI <br/><p>In this paper, an analytical energy band easy to calculate for GaAs, AlAs and AlGaAs is proposed. The transfer eigenvalue and energy effective mass are obtained by asing the LCAO transfer matrix model. By studing the transfer eigenrunction for two energy valleys, the transformation between different energy valleys is derived, from which new concepts about symmetry transformer and symmetry filter are suggested. Using the energy effective masses and the transformation coefficients between energy valleys at the interface, we derive the equations of envelope function and their boundary conditions for this single band-double valley model. Applying this theory to GaAs/AlGaAs/AlAs system, the confined energy level and wavefunc-tion are calculated. Finally, the significance of this generalized effective mass theory is discussed.</p> <br/>Acta Physica Sinica. 1989 38(7): 1103-1110. Published 2005-07-08 A SINGLE BAND-DOUBLE VALLEY THEORY FOR SUPERLA-TTICE AND QUANTUM WELL XUE FANG-SHI 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1103-1110. article doi:10.7498/aps.38.1103 10.7498/aps.38.1103 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1103 1103-1110 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1111 Author(s): XIA YUE-YUAN, XU XIAN-GANG, ZHANG ZHAO-LIN, TAN CHUN-YU, YANG HONG, SUN XIU-FANG <br/><p>In this paper, we present a new method for calculation of depth profiles of implanted ions in multilayer materials. It combines the Monte Carlo simulation method with the method of numerical solution of the LSS transport equation. Taking into account the reflection of the ions at the interfaces of the layers the analytical expression of the range distribution in the multilayer materials is obtained. The comparison between the theoretical and the experimental results is made and good agreement is shown.</p> <br/>Acta Physica Sinica. 1989 38(7): 1111-1121. Published 2005-07-08 Author(s): XIA YUE-YUAN, XU XIAN-GANG, ZHANG ZHAO-LIN, TAN CHUN-YU, YANG HONG, SUN XIU-FANG <br/><p>In this paper, we present a new method for calculation of depth profiles of implanted ions in multilayer materials. It combines the Monte Carlo simulation method with the method of numerical solution of the LSS transport equation. Taking into account the reflection of the ions at the interfaces of the layers the analytical expression of the range distribution in the multilayer materials is obtained. The comparison between the theoretical and the experimental results is made and good agreement is shown.</p> <br/>Acta Physica Sinica. 1989 38(7): 1111-1121. Published 2005-07-08 ION RANGE DISTRIBUTION IN MULTILAYER MATERIALS XIA YUE-YUAN, XU XIAN-GANG, ZHANG ZHAO-LIN, TAN CHUN-YU, YANG HONG, SUN XIU-FANG 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1111-1121. article doi:10.7498/aps.38.1111 10.7498/aps.38.1111 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1111 1111-1121 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1122 Author(s): LI YU-PU, WANG PEI-XUAN, ZHANG GUO-GUANG, MA RU-ZHANG, LIU JIA-RUI, ZHU PEI-RAN, QIU CHANG-QING <br/><p>The HR-1 austenic steel have been irradiated with 70 keV 4He ions to the dose of 5×1016—1018cm2 at room temperature. Isochronal post-annealing has been carried out at temperatures up to 1273 K. 2.5 MeV proton elastic scattering,TEM and SEM are used to investigate the trap-ping, migration and release of He.</p> <br/>Acta Physica Sinica. 1989 38(7): 1122-1126. Published 2005-07-08 Author(s): LI YU-PU, WANG PEI-XUAN, ZHANG GUO-GUANG, MA RU-ZHANG, LIU JIA-RUI, ZHU PEI-RAN, QIU CHANG-QING <br/><p>The HR-1 austenic steel have been irradiated with 70 keV 4He ions to the dose of 5×1016—1018cm2 at room temperature. Isochronal post-annealing has been carried out at temperatures up to 1273 K. 2.5 MeV proton elastic scattering,TEM and SEM are used to investigate the trap-ping, migration and release of He.</p> <br/>Acta Physica Sinica. 1989 38(7): 1122-1126. Published 2005-07-08 A STUDY OF He TRAPPING AND RELEASE IN THE HR-1 STAINLESS STEEL LI YU-PU, WANG PEI-XUAN, ZHANG GUO-GUANG, MA RU-ZHANG, LIU JIA-RUI, ZHU PEI-RAN, QIU CHANG-QING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1122-1126. article doi:10.7498/aps.38.1122 10.7498/aps.38.1122 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1122 1122-1126 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1127 Author(s): GAO FEI, ZHANG HONG-TU <br/><p>In this paper, the strain and stress fields produced by the dislocation are analysed by means of continuous dislocation distribution. The dislocation distribution inside the core is expressed by the dislocation gauge fields which are calculated under certain gauge condition. The stresses inside and outside the core of a screw dislocation are obtained. Outside the core, the stresses are the same as that of Volterra dislocation, but inside the core, the stresses of the screw dislocation approach zero when ρ goes to zero. Finally, the energy of the screw dislocation is calculated.</p> <br/>Acta Physica Sinica. 1989 38(7): 1127-1133. Published 2005-07-08 Author(s): GAO FEI, ZHANG HONG-TU <br/><p>In this paper, the strain and stress fields produced by the dislocation are analysed by means of continuous dislocation distribution. The dislocation distribution inside the core is expressed by the dislocation gauge fields which are calculated under certain gauge condition. The stresses inside and outside the core of a screw dislocation are obtained. Outside the core, the stresses are the same as that of Volterra dislocation, but inside the core, the stresses of the screw dislocation approach zero when ρ goes to zero. Finally, the energy of the screw dislocation is calculated.</p> <br/>Acta Physica Sinica. 1989 38(7): 1127-1133. Published 2005-07-08 THE APPLICATION OF DISLOCATION GAUGE FIELD FOR THE DISLOCATION CORE GAO FEI, ZHANG HONG-TU 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1127-1133. article doi:10.7498/aps.38.1127 10.7498/aps.38.1127 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1127 1127-1133 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1134 Author(s): ZHAO QING-LAN, HUANG YI-SEN <br/><p>X-ray topographic contrast of inclusions in the crystal of potassium acid phthalate (KAP) has been studied experimentally and theoretically. The nature of inclusion formation was determined in view of their black and white contrast. An "Inclusion Decoration Method" for use in determining the nature of the strained regions in the crystal with very large areas has been proposed. The results together with such an analysis technique are presented in this paper. It has provided a practical way to identify the structural weakness in single crystals.</p> <br/>Acta Physica Sinica. 1989 38(7): 1134-1139. Published 2005-07-08 Author(s): ZHAO QING-LAN, HUANG YI-SEN <br/><p>X-ray topographic contrast of inclusions in the crystal of potassium acid phthalate (KAP) has been studied experimentally and theoretically. The nature of inclusion formation was determined in view of their black and white contrast. An "Inclusion Decoration Method" for use in determining the nature of the strained regions in the crystal with very large areas has been proposed. The results together with such an analysis technique are presented in this paper. It has provided a practical way to identify the structural weakness in single crystals.</p> <br/>Acta Physica Sinica. 1989 38(7): 1134-1139. Published 2005-07-08 X-RAY TOPOGRAPHIC CONTRAST OF INCLUSIONS IN CRYSTAL OF POTASSIUM ACID PHTHALATE ZHAO QING-LAN, HUANG YI-SEN 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1134-1139. article doi:10.7498/aps.38.1134 10.7498/aps.38.1134 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1134 1134-1139 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1140 Author(s): ZHENG DA-FANG, LIN ZHI-FANG, TAO RUI-BAO <br/><p>Using an exact real-space renormalization-group technique, we show that self-avoiding trails (SAT) and self-avoiding walks (SAW) on the Sierpinski gasket enjoy the same critical exponent ν for the ‘correlation length' and therefore belong to the same universcllily class. On the other hand, it is shown that SAT on branching Koch curves with maximum ramification number Rmax&lt;3 belongs to another universality class different from that of SAW.</p> <br/>Acta Physica Sinica. 1989 38(7): 1140-1045. Published 2005-07-08 Author(s): ZHENG DA-FANG, LIN ZHI-FANG, TAO RUI-BAO <br/><p>Using an exact real-space renormalization-group technique, we show that self-avoiding trails (SAT) and self-avoiding walks (SAW) on the Sierpinski gasket enjoy the same critical exponent ν for the ‘correlation length' and therefore belong to the same universcllily class. On the other hand, it is shown that SAT on branching Koch curves with maximum ramification number Rmax&lt;3 belongs to another universality class different from that of SAW.</p> <br/>Acta Physica Sinica. 1989 38(7): 1140-1045. Published 2005-07-08 SELF-AVOIDING TRAILS ON FINITELY RAMIFIED FRACTALS ZHENG DA-FANG, LIN ZHI-FANG, TAO RUI-BAO 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1140-1045. article doi:10.7498/aps.38.1140 10.7498/aps.38.1140 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1140 1140-1045 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1146 Author(s): WANG GUO-LIANG, DAI PEI-YING <br/><p>The behavior of velocity of ultrasound in glasses below 3 K is analysed by combining the tunneling model and the infrared divergence theory. The variation of sound velocity is regarded as consisting of two parts, i.e., non-relaxation process and relaxation process. The former is analysed by the Bose elementary excitation theory and the latter by the theory of tun neling relaxation with infrared divergence. The theoretical curve of sound velocity vs temperature is consistent with the experimental data. The observed In T rule of sound velocity for normal frequency (107Hz) at 0.3-1K, and the phenomenon of appearance of sound velocity minimum for ultrahigh frequency (2GHz) belowe 0.1 K are also explained.</p> <br/>Acta Physica Sinica. 1989 38(7): 1146-1153. Published 2005-07-08 Author(s): WANG GUO-LIANG, DAI PEI-YING <br/><p>The behavior of velocity of ultrasound in glasses below 3 K is analysed by combining the tunneling model and the infrared divergence theory. The variation of sound velocity is regarded as consisting of two parts, i.e., non-relaxation process and relaxation process. The former is analysed by the Bose elementary excitation theory and the latter by the theory of tun neling relaxation with infrared divergence. The theoretical curve of sound velocity vs temperature is consistent with the experimental data. The observed In T rule of sound velocity for normal frequency (107Hz) at 0.3-1K, and the phenomenon of appearance of sound velocity minimum for ultrahigh frequency (2GHz) belowe 0.1 K are also explained.</p> <br/>Acta Physica Sinica. 1989 38(7): 1146-1153. Published 2005-07-08 THEORY OF VELOCITY OF ULTRASOUND WITH I NFRARED DIVERGENCE IN GIASSES AT LOW TEMPERATURES WANG GUO-LIANG, DAI PEI-YING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1146-1153. article doi:10.7498/aps.38.1146 10.7498/aps.38.1146 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1146 1146-1153 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1154 Author(s): BAO SHI-NING, HUANG QIN-LONG, XU YA-BO <br/><p>The chemisorption of CO on Fe(ll0) surface has been investigated using angle resolved ultraviolet photoemission spectroscopy (ARUPS)The experimental results, compared with the calculation, show that the molecular axis of Co is nearly perpendicular to the iron surface at 150K and low coverage of CO. The angle between CO axis and the surface normal is less than 10 degrees.</p> <br/>Acta Physica Sinica. 1989 38(7): 1154-1161. Published 2005-07-08 Author(s): BAO SHI-NING, HUANG QIN-LONG, XU YA-BO <br/><p>The chemisorption of CO on Fe(ll0) surface has been investigated using angle resolved ultraviolet photoemission spectroscopy (ARUPS)The experimental results, compared with the calculation, show that the molecular axis of Co is nearly perpendicular to the iron surface at 150K and low coverage of CO. The angle between CO axis and the surface normal is less than 10 degrees.</p> <br/>Acta Physica Sinica. 1989 38(7): 1154-1161. Published 2005-07-08 AN ARUPS STUDY OF CO ON Fe(110) SURFACE BAO SHI-NING, HUANG QIN-LONG, XU YA-BO 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1154-1161. article doi:10.7498/aps.38.1154 10.7498/aps.38.1154 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1154 1154-1161 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1162 Author(s): LI YONG-GUI, ZHUANG JIE-JIA, JI YU-LING <br/><p>A method of measuring micro-vibration amplitude with laser is presented. By using the optical resonant characteristic of Fabry-Perot etalon and intensity-comparison lock-in technique of laser, we have completed a measurement with the minimum amplitude of vibration at the order of 10-12 cm under the condition of an ordinary laboratory.</p> <br/>Acta Physica Sinica. 1989 38(7): 1162-1166. Published 2005-07-08 Author(s): LI YONG-GUI, ZHUANG JIE-JIA, JI YU-LING <br/><p>A method of measuring micro-vibration amplitude with laser is presented. By using the optical resonant characteristic of Fabry-Perot etalon and intensity-comparison lock-in technique of laser, we have completed a measurement with the minimum amplitude of vibration at the order of 10-12 cm under the condition of an ordinary laboratory.</p> <br/>Acta Physica Sinica. 1989 38(7): 1162-1166. Published 2005-07-08 A METHOD FOR MEASURING THE MICRO-VIBRATION AMPLITUDE BY USING INTENSITY-COMPARISON LOCK-IN TECHNIQUE OF LASER LI YONG-GUI, ZHUANG JIE-JIA, JI YU-LING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1162-1166. article doi:10.7498/aps.38.1162 10.7498/aps.38.1162 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1162 1162-1166 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1167 Author(s): ZHU SHI-TONG <br/><p>Arccording the general covariant equation of motion and Maxwell equations, we derive the analytical expressions for various quantities of electron plasma wave. It is pointed out that the plasma wave with △ω = 2ωp is completely harmonic. The condition of complete resonance is given by △ω= 2ω(p0) [1+(e2(A2((1)2)+(A2((2)2))/(2m2c4)+(3e2A2(1)A2(2))/(m2c4)]-1/2.</p> <br/>Acta Physica Sinica. 1989 38(7): 1167-1171. Published 2005-07-08 Author(s): ZHU SHI-TONG <br/><p>Arccording the general covariant equation of motion and Maxwell equations, we derive the analytical expressions for various quantities of electron plasma wave. It is pointed out that the plasma wave with △ω = 2ωp is completely harmonic. The condition of complete resonance is given by △ω= 2ω(p0) [1+(e2(A2((1)2)+(A2((2)2))/(2m2c4)+(3e2A2(1)A2(2))/(m2c4)]-1/2.</p> <br/>Acta Physica Sinica. 1989 38(7): 1167-1171. Published 2005-07-08 FREQUENCY MATCHING IN BEAT WAVE LASER ACCELERATOR ZHU SHI-TONG 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1167-1171. article doi:10.7498/aps.38.1167 10.7498/aps.38.1167 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1167 1167-1171 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1172 Author(s): QIU JI-ZHEN, ZHANG SEN, WANG GANG <br/><p>Photoionization spectra of Ca and Sr atoms above the classical field-ionization threshold are observed by using two-photon excitation method. The relation between the resonances and the applied electric field as well as polarization, of laser beam are discussed.</p> <br/>Acta Physica Sinica. 1989 38(7): 1172-1176. Published 2005-07-08 Author(s): QIU JI-ZHEN, ZHANG SEN, WANG GANG <br/><p>Photoionization spectra of Ca and Sr atoms above the classical field-ionization threshold are observed by using two-photon excitation method. The relation between the resonances and the applied electric field as well as polarization, of laser beam are discussed.</p> <br/>Acta Physica Sinica. 1989 38(7): 1172-1176. Published 2005-07-08 RESONANCES OF PHOTOIONIZATION OF Ca AND Sr ATOMS IN AN ELECTRIC FIELD QIU JI-ZHEN, ZHANG SEN, WANG GANG 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1172-1176. article doi:10.7498/aps.38.1172 10.7498/aps.38.1172 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1172 1172-1176 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1177 Author(s): LI YI-BING, LI SHAO-PING <br/><p>This paper presents an investigation of dipole spin modes in an anisotropic medium with uniaxial anisotropy and a weak exchange effect. The critical angle between surface wave and volume wave is given according to the new circumstance and the real ω vs k figure in space is analysed. The experimental results of single crystal YIG FMR spectra agree well with our calculation.</p> <br/>Acta Physica Sinica. 1989 38(7): 1177-1181. Published 2005-07-08 Author(s): LI YI-BING, LI SHAO-PING <br/><p>This paper presents an investigation of dipole spin modes in an anisotropic medium with uniaxial anisotropy and a weak exchange effect. The critical angle between surface wave and volume wave is given according to the new circumstance and the real ω vs k figure in space is analysed. The experimental results of single crystal YIG FMR spectra agree well with our calculation.</p> <br/>Acta Physica Sinica. 1989 38(7): 1177-1181. Published 2005-07-08 MAGNETO-EXCHANGE MODES IN ANISOTROPIC MEDIA LI YI-BING, LI SHAO-PING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1177-1181. article doi:10.7498/aps.38.1177 10.7498/aps.38.1177 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1177 1177-1181 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1182 Author(s): GUAN PENG, LIU YI-HUA <br/><p>Some previous experimental results about the concentration dependence of magnetic ani-sotropy for metalmetal amorphous alloys were analyzed. By introducing a new parameter, a model of tetrahedral directional order was proposed. The comparison with some experimental data shows good agreement.</p> <br/>Acta Physica Sinica. 1989 38(7): 1182-1186. Published 2005-07-08 Author(s): GUAN PENG, LIU YI-HUA <br/><p>Some previous experimental results about the concentration dependence of magnetic ani-sotropy for metalmetal amorphous alloys were analyzed. By introducing a new parameter, a model of tetrahedral directional order was proposed. The comparison with some experimental data shows good agreement.</p> <br/>Acta Physica Sinica. 1989 38(7): 1182-1186. Published 2005-07-08 A NEW MODEL FOR INDUCED ANISOTROPY IN AMORPHOUS ALLOYS GUAN PENG, LIU YI-HUA 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1182-1186. article doi:10.7498/aps.38.1182 10.7498/aps.38.1182 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1182 1182-1186 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1187 Author(s): YE QING <br/><p>In this paper, we apply the decoration and decimation transformation to the square-lattice spin-1 model and show that it is equivalent toa checkerboard Ising model with cross and four-spin interactions. Then, the approximate critical condition is obtained for the model and it reduces to Onsager's exact solution in the Ising-model limit.</p> <br/>Acta Physica Sinica. 1989 38(7): 1187-1190. Published 2005-07-08 Author(s): YE QING <br/><p>In this paper, we apply the decoration and decimation transformation to the square-lattice spin-1 model and show that it is equivalent toa checkerboard Ising model with cross and four-spin interactions. Then, the approximate critical condition is obtained for the model and it reduces to Onsager's exact solution in the Ising-model limit.</p> <br/>Acta Physica Sinica. 1989 38(7): 1187-1190. Published 2005-07-08 AN APPROXIMATE SOLUTION FOR SQUARE-LATTICE SPIN-1 MODEL YE QING 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1187-1190. article doi:10.7498/aps.38.1187 10.7498/aps.38.1187 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1187 1187-1190 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1191 Author(s): TANG KUN-FA <br/><p>In this paper, we consider a Kagome-lattise mixed-spin model and show that it is equivalent to an eight-vertex model via decimation and duality transformation. According to the free-fermion approximate solution of the eight-vertex model, the approximate expressions are given for the free energy and critical condition of the model.</p> <br/>Acta Physica Sinica. 1989 38(7): 1191-1195. Published 2005-07-08 Author(s): TANG KUN-FA <br/><p>In this paper, we consider a Kagome-lattise mixed-spin model and show that it is equivalent to an eight-vertex model via decimation and duality transformation. According to the free-fermion approximate solution of the eight-vertex model, the approximate expressions are given for the free energy and critical condition of the model.</p> <br/>Acta Physica Sinica. 1989 38(7): 1191-1195. Published 2005-07-08 THE FREE-FERMION APPROXIMATE SOLUTION FOR KAGOME-LATTICE MIXED-SPIN MODEL TANG KUN-FA 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1191-1195. article doi:10.7498/aps.38.1191 10.7498/aps.38.1191 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1191 1191-1195 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1196 Author(s): WANG FU-GAO, TANG KUN-FA, HU JIA-ZHEN <br/><p>The critical behavior of Ising model with three-spin interactions on three-node hierarchical lattices is investigated by using an exact renormalization group transformation. As in the case of Bravais lattices, the model with two-spin interactions and the one with three-spin interactions belong to different universality classes.</p> <br/>Acta Physica Sinica. 1989 38(7): 1196-1198. Published 2005-07-08 Author(s): WANG FU-GAO, TANG KUN-FA, HU JIA-ZHEN <br/><p>The critical behavior of Ising model with three-spin interactions on three-node hierarchical lattices is investigated by using an exact renormalization group transformation. As in the case of Bravais lattices, the model with two-spin interactions and the one with three-spin interactions belong to different universality classes.</p> <br/>Acta Physica Sinica. 1989 38(7): 1196-1198. Published 2005-07-08 CRITICAL BEHAVIOUR OF ISING MODEL WITH THREE-SPIN INTERACTIONS ON THREE-NODE HIERARCHICAL LATTICES WANG FU-GAO, TANG KUN-FA, HU JIA-ZHEN 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1196-1198. article doi:10.7498/aps.38.1196 10.7498/aps.38.1196 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1196 1196-1198 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1199 Author(s): LI WEN-ZU, WU JIAN-BIN, CHEN FENG, CHENG KAI-JIA <br/><p>Starting from the quasi-two dimensional Bose condensation, we studied the influence of layer-thickness and ox gen-vacancy on the critical temperature Tc in real high-Tc, superconductors. The results are consistent with known experiments qualitatively.</p> <br/>Acta Physica Sinica. 1989 38(7): 1199-1204. Published 2005-07-08 Author(s): LI WEN-ZU, WU JIAN-BIN, CHEN FENG, CHENG KAI-JIA <br/><p>Starting from the quasi-two dimensional Bose condensation, we studied the influence of layer-thickness and ox gen-vacancy on the critical temperature Tc in real high-Tc, superconductors. The results are consistent with known experiments qualitatively.</p> <br/>Acta Physica Sinica. 1989 38(7): 1199-1204. Published 2005-07-08 QUASI-TWO DIMENSIONAL BOSE CONDENSATION AND HIGH-Tc SUPERCONDUCTIVITY LI WEN-ZU, WU JIAN-BIN, CHEN FENG, CHENG KAI-JIA 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1199-1204. article doi:10.7498/aps.38.1199 10.7498/aps.38.1199 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1199 1199-1204 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1205 Author(s): ZHONG WEI-LIE <br/><p>Incomplete poling of ferroelectric crystals has significant effect on their diffraction intensities. In the crystal structure determination, this effect must be taken into account. For lead hydrogen phosphate, appropriate equations are derived to correct this effect. Incorporating this correction in the structure determination of this crystal, a better fit is obtained.</p> <br/>Acta Physica Sinica. 1989 38(7): 1205-1209. Published 2005-07-08 Author(s): ZHONG WEI-LIE <br/><p>Incomplete poling of ferroelectric crystals has significant effect on their diffraction intensities. In the crystal structure determination, this effect must be taken into account. For lead hydrogen phosphate, appropriate equations are derived to correct this effect. Incorporating this correction in the structure determination of this crystal, a better fit is obtained.</p> <br/>Acta Physica Sinica. 1989 38(7): 1205-1209. Published 2005-07-08 THE DIFFRACTION INTENSITIES OF INCOMPLETELY POLED FERROELECTRIC CRYSTALS ZHONG WEI-LIE 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1205-1209. article doi:10.7498/aps.38.1205 10.7498/aps.38.1205 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1205 1205-1209 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1210 Author(s): XING XU, JIANG WEI, WANG XI-FU <br/><p>In this paper, we make quantitative rheor ncal calculation for the anomalous Hall effect in n-Ge semiconductor at room teperature by use of the inversion layers model. The results are in agreement with the experiments.</p> <br/>Acta Physica Sinica. 1989 38(7): 1210-1214. Published 2005-07-08 Author(s): XING XU, JIANG WEI, WANG XI-FU <br/><p>In this paper, we make quantitative rheor ncal calculation for the anomalous Hall effect in n-Ge semiconductor at room teperature by use of the inversion layers model. The results are in agreement with the experiments.</p> <br/>Acta Physica Sinica. 1989 38(7): 1210-1214. Published 2005-07-08 INVESTIGATION OF THE ANOMALOUS HALL EFFECT IN n-Ge AT ROOM TEMPERATURE BY THE INVERSION LAYERS MODEL XING XU, JIANG WEI, WANG XI-FU 2005-07-08 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1989 38(7): 1210-1214. article doi:10.7498/aps.38.1210 10.7498/aps.38.1210 Acta Physica Sinica 38 7 2005-07-08 //www.getgobooth.com/en/article/doi/10.7498/aps.38.1210 1210-1214

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