//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:37 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:37 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.41.869 Author(s): DAI XIAN-XIN, ZHAO ZHENG <br/><p>A new method is suggested to determine the event horizon and the Howking temperature of a spherically charged evaporating black hole. The Klein-Gordon equation near the event horizon is solved.</p> <br/>Acta Physica Sinica. 1992 41(6): 869-872. Published 1992-03-05 Author(s): DAI XIAN-XIN, ZHAO ZHENG <br/><p>A new method is suggested to determine the event horizon and the Howking temperature of a spherically charged evaporating black hole. The Klein-Gordon equation near the event horizon is solved.</p> <br/>Acta Physica Sinica. 1992 41(6): 869-872. Published 1992-03-05 EVENT HORIZON AND TEMPERATURE OF SPHERICALLY CHARGED EVAPORATING BLACK HOLE DAI XIAN-XIN, ZHAO ZHENG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 869-872. article doi:10.7498/aps.41.869 10.7498/aps.41.869 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.869 869-872 //www.getgobooth.com/en/article/doi/10.7498/aps.41.873 Author(s): SUN BIAO, LI JIA-MING <br/><p>Based on the independent-particle-approximation (i.e. the multiple scattering self-consistent-field theory), we studied the electronic structures of Rydberg series of the diatomic molecules with Si as their united atom, such as N2, CO, BF, A1H, LiNa, "BeNe" and "MgHe". The principal quantum number of the first state of the Rydberg series is determined from the limit atom of the molecular elecronic configuration. The dynamics of the excited molecules has been elucidated. Our theoretical results prove to be in fair agreement with the existing experimental measurements, thus it can provide a reliable basis for future refined calculations such as the configuation interaction methods.</p> <br/>Acta Physica Sinica. 1992 41(6): 873-880. Published 1992-03-05 Author(s): SUN BIAO, LI JIA-MING <br/><p>Based on the independent-particle-approximation (i.e. the multiple scattering self-consistent-field theory), we studied the electronic structures of Rydberg series of the diatomic molecules with Si as their united atom, such as N2, CO, BF, A1H, LiNa, "BeNe" and "MgHe". The principal quantum number of the first state of the Rydberg series is determined from the limit atom of the molecular elecronic configuration. The dynamics of the excited molecules has been elucidated. Our theoretical results prove to be in fair agreement with the existing experimental measurements, thus it can provide a reliable basis for future refined calculations such as the configuation interaction methods.</p> <br/>Acta Physica Sinica. 1992 41(6): 873-880. Published 1992-03-05 ELECTRONIC STRUCTURE OF MOLECULAR RYDBERG STATES OF DIATOMIC MOLECULES WITH Si AS THEIR UNITED ATOM SUN BIAO, LI JIA-MING 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 873-880. article doi:10.7498/aps.41.873 10.7498/aps.41.873 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.873 873-880 //www.getgobooth.com/en/article/doi/10.7498/aps.41.881 Author(s): YANG JIAN-HAO, LIU FU-SUI <br/><p>This paper reconsiders the calculation methods of transition probability its quantum mechanics, and points out that under the action of non-monochromatic light with frequency width Aw, the ionization probability of atoms will seriously deviate from Fermi's Second Golden Rule within the initial interaction period △t≈1/△ω.</p> <br/>Acta Physica Sinica. 1992 41(6): 881-884. Published 1992-03-05 Author(s): YANG JIAN-HAO, LIU FU-SUI <br/><p>This paper reconsiders the calculation methods of transition probability its quantum mechanics, and points out that under the action of non-monochromatic light with frequency width Aw, the ionization probability of atoms will seriously deviate from Fermi's Second Golden Rule within the initial interaction period △t≈1/△ω.</p> <br/>Acta Physica Sinica. 1992 41(6): 881-884. Published 1992-03-05 TRANSIENT IONIZATION PROBABILITY OF ATOMS UNDER THE ACTION OF NONMONOCHROM-ATIC LIGHT YANG JIAN-HAO, LIU FU-SUI 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 881-884. article doi:10.7498/aps.41.881 10.7498/aps.41.881 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.881 881-884 //www.getgobooth.com/en/article/doi/10.7498/aps.41.885 Author(s): CHEN XIANG-JUN, FAN XIAO-WEI, XU KE-ZUN, YANG BING-XIN, XING SHI-LIN, WANG YONG-GANG, ZHANG FANG <br/><p>A linear-transmission-type apparatus for measuring total cross sections of electron scattering by atoms and molecules has been set up. Measurements on N2 have been carried out for 250-1400eV electrons with an accuracy of 3.5%. The results have been compared with available experimental and theoretical values of the total cross section.</p> <br/>Acta Physica Sinica. 1992 41(6): 885-889. Published 1992-03-05 Author(s): CHEN XIANG-JUN, FAN XIAO-WEI, XU KE-ZUN, YANG BING-XIN, XING SHI-LIN, WANG YONG-GANG, ZHANG FANG <br/><p>A linear-transmission-type apparatus for measuring total cross sections of electron scattering by atoms and molecules has been set up. Measurements on N2 have been carried out for 250-1400eV electrons with an accuracy of 3.5%. The results have been compared with available experimental and theoretical values of the total cross section.</p> <br/>Acta Physica Sinica. 1992 41(6): 885-889. Published 1992-03-05 TOTAL CROSS SECTION MEASUREMENTS FOR ELECTRON SCATTERING ON N2 IN THE ENERGY RANGE 250-1400 eV CHEN XIANG-JUN, FAN XIAO-WEI, XU KE-ZUN, YANG BING-XIN, XING SHI-LIN, WANG YONG-GANG, ZHANG FANG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 885-889. article doi:10.7498/aps.41.885 10.7498/aps.41.885 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.885 885-889 //www.getgobooth.com/en/article/doi/10.7498/aps.41.890 Author(s): HU KAI-SHENG, LI ZONG-XIANG, NING DING, LI HAO, ZHOU JIAN-PING, LIU WEI-MIN <br/><p>This papers presents the effects of Co-60 gamma irradiation on the absorption loss of single mode optical fibers doped with rare earth Er3+. The parameters of optical fibers are measured, prior to irradiation and after irradiation and UV bleaching. It has been found that absorption loss in the wavelength range of 0.80-1.60μm is greatly lager than those of unirra-diated fibers. Its increase law of absorption loss is similar to that of β ray irradiation. This similarity can be explained by Compton's effect. The induced loss can be partly bleached by UV, resulting in a better effect than heat annealing. In order to improve radiation resistivity, the elements with smaller atomic number should be selected as dopants in both core and cladding of the fiber.</p> <br/>Acta Physica Sinica. 1992 41(6): 890-897. Published 1992-03-05 Author(s): HU KAI-SHENG, LI ZONG-XIANG, NING DING, LI HAO, ZHOU JIAN-PING, LIU WEI-MIN <br/><p>This papers presents the effects of Co-60 gamma irradiation on the absorption loss of single mode optical fibers doped with rare earth Er3+. The parameters of optical fibers are measured, prior to irradiation and after irradiation and UV bleaching. It has been found that absorption loss in the wavelength range of 0.80-1.60μm is greatly lager than those of unirra-diated fibers. Its increase law of absorption loss is similar to that of β ray irradiation. This similarity can be explained by Compton's effect. The induced loss can be partly bleached by UV, resulting in a better effect than heat annealing. In order to improve radiation resistivity, the elements with smaller atomic number should be selected as dopants in both core and cladding of the fiber.</p> <br/>Acta Physica Sinica. 1992 41(6): 890-897. Published 1992-03-05 EFFECTS OF γ IRRADIATION ON LOSS CHARACTERISTICS OF SINGLE MODE OPTICAL FIBERS DOPED WITH RARE EARTH Er3+ HU KAI-SHENG, LI ZONG-XIANG, NING DING, LI HAO, ZHOU JIAN-PING, LIU WEI-MIN 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 890-897. article doi:10.7498/aps.41.890 10.7498/aps.41.890 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.890 890-897 //www.getgobooth.com/en/article/doi/10.7498/aps.41.898 Author(s): LIN ZUN-QI, ZHANG HUI-HUANG, HE XING-FA, LIN KANG-CHUN, WANG XIAO-QIN, ZHUANG YI-FEI, WANG LIU-SHUI, WEI XIAO-CHUN, LU QI-RONG, SHI A-YING, DAI MEI-LAN, TIAN LI, FAN GEN-LIANG, LI JIA-MING <br/><p>A novel group of experiments has shown that single 10-micrometer-radius-scale laser spot is not able to produce the 90° side emitted three half harmonic efficiently in a preformed laser plasmas. However, with the help of one or two accessary laser spots with size similar to the main one, the side emitted three halfs can easily be built up when some position and angle conditions for the accessary spots are fulfilled. The origin of these phenomena have been analyzed in terms of the two plasmon decay theory and dynamic self-focusing model.</p> <br/>Acta Physica Sinica. 1992 41(6): 898-909. Published 1992-03-05 Author(s): LIN ZUN-QI, ZHANG HUI-HUANG, HE XING-FA, LIN KANG-CHUN, WANG XIAO-QIN, ZHUANG YI-FEI, WANG LIU-SHUI, WEI XIAO-CHUN, LU QI-RONG, SHI A-YING, DAI MEI-LAN, TIAN LI, FAN GEN-LIANG, LI JIA-MING <br/><p>A novel group of experiments has shown that single 10-micrometer-radius-scale laser spot is not able to produce the 90° side emitted three half harmonic efficiently in a preformed laser plasmas. However, with the help of one or two accessary laser spots with size similar to the main one, the side emitted three halfs can easily be built up when some position and angle conditions for the accessary spots are fulfilled. The origin of these phenomena have been analyzed in terms of the two plasmon decay theory and dynamic self-focusing model.</p> <br/>Acta Physica Sinica. 1992 41(6): 898-909. Published 1992-03-05 EFFECT OF THE SMALL ACCESSARY LASER SPOTS ON THE HARMONIC EMISSION STIMULATED BY SELF-FOCUSING OF A 10-MICROMETER SCALE LASER SPOT LIN ZUN-QI, ZHANG HUI-HUANG, HE XING-FA, LIN KANG-CHUN, WANG XIAO-QIN, ZHUANG YI-FEI, WANG LIU-SHUI, WEI XIAO-CHUN, LU QI-RONG, SHI A-YING, DAI MEI-LAN, TIAN LI, FAN GEN-LIANG, LI JIA-MING 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 898-909. article doi:10.7498/aps.41.898 10.7498/aps.41.898 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.898 898-909 //www.getgobooth.com/en/article/doi/10.7498/aps.41.910 Author(s): YANG WEI-HONG, HU XI-WEI <br/><p>In this paper, the reduced form (four differential equations of the first order) of generalized MHD equations is obtained, only some approximations satisfied by the experimental condition of heating tokamak plasma are used. An analytical dispersion relation (eigenmode solution) for a homogeneous plasma cylinder is obtained. It is shown that Appert's theory is a limiting case of our theory.</p> <br/>Acta Physica Sinica. 1992 41(6): 910-916. Published 1992-03-05 Author(s): YANG WEI-HONG, HU XI-WEI <br/><p>In this paper, the reduced form (four differential equations of the first order) of generalized MHD equations is obtained, only some approximations satisfied by the experimental condition of heating tokamak plasma are used. An analytical dispersion relation (eigenmode solution) for a homogeneous plasma cylinder is obtained. It is shown that Appert's theory is a limiting case of our theory.</p> <br/>Acta Physica Sinica. 1992 41(6): 910-916. Published 1992-03-05 REDUCED FORM AND EIGENMODE SOLUTION OF GENERALIZED MHD EQUATIONS IN A CYLINDRICAL PLASMA YANG WEI-HONG, HU XI-WEI 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 910-916. article doi:10.7498/aps.41.910 10.7498/aps.41.910 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.910 910-916 //www.getgobooth.com/en/article/doi/10.7498/aps.41.917 Author(s): WAN MEI-XIANG <br/><p>A physical model of conducting islands is proposed to explaine the characterizations of dielectric loss of conducting polymers caused by interface polarizability. According to this model, the behavior of the electric loss of conducting polymers caused by conducting islands depends on the dielectric constant and the conductivity of conducting islands itself, as well as its volume fraction occupied in the conducting polymers. The characterizations of dielectric loss of conducting polymers proposed by the model of conducting island are consistent with the observations obtained from experiments of microwave absorption of conducting polymers.</p> <br/>Acta Physica Sinica. 1992 41(6): 917-923. Published 1992-03-05 Author(s): WAN MEI-XIANG <br/><p>A physical model of conducting islands is proposed to explaine the characterizations of dielectric loss of conducting polymers caused by interface polarizability. According to this model, the behavior of the electric loss of conducting polymers caused by conducting islands depends on the dielectric constant and the conductivity of conducting islands itself, as well as its volume fraction occupied in the conducting polymers. The characterizations of dielectric loss of conducting polymers proposed by the model of conducting island are consistent with the observations obtained from experiments of microwave absorption of conducting polymers.</p> <br/>Acta Physica Sinica. 1992 41(6): 917-923. Published 1992-03-05 STUDIES ON ABSORPTION MECHANISM OF MICROWAVE ABSORBENT OF CONDUCTING POLYMERS WAN MEI-XIANG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 917-923. article doi:10.7498/aps.41.917 10.7498/aps.41.917 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.917 917-923 //www.getgobooth.com/en/article/doi/10.7498/aps.41.924 Author(s): MIAO WEI-FANG, LI GU-SONG, LI SHU-LING, WANG JING-TANG <br/><p>The characteristics of amorphization process during mechanical alloying of the mixture of Ni and Zr powders have been studied by differential scanning calorimetry (DSC) and X-ray diffraction measurements. The role of internal stress in the amorphization process, together with the variation in internal stress are discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 924-928. Published 1992-03-05 Author(s): MIAO WEI-FANG, LI GU-SONG, LI SHU-LING, WANG JING-TANG <br/><p>The characteristics of amorphization process during mechanical alloying of the mixture of Ni and Zr powders have been studied by differential scanning calorimetry (DSC) and X-ray diffraction measurements. The role of internal stress in the amorphization process, together with the variation in internal stress are discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 924-928. Published 1992-03-05 THE ROLE OF INTERNAL STRESS IN THE AMORPHIZATION PROCESS DURING MECHANICAL ALLOYING MIAO WEI-FANG, LI GU-SONG, LI SHU-LING, WANG JING-TANG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 924-928. article doi:10.7498/aps.41.924 10.7498/aps.41.924 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.924 924-928 //www.getgobooth.com/en/article/doi/10.7498/aps.41.929 Author(s): SHI SHUANG-HE, WANG XU-WEI, CHEN JIN-CHANG <br/><p>Electronic structure of atom cluster Fe4B, taken as a tetrahedron, is calcu lated by using the self-consistent field Xα-scattered-wave method. The energy levels, contour maps and densities of states for the atom clusters Fe4 and Fe4B are analyzed and compared respectively, the effect of the B atoms on the electronic structure of atom cluster Fe4B is discussed, and some physical nature of amorphous alloy Fe80B20 is also discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 929-936. Published 1992-03-05 Author(s): SHI SHUANG-HE, WANG XU-WEI, CHEN JIN-CHANG <br/><p>Electronic structure of atom cluster Fe4B, taken as a tetrahedron, is calcu lated by using the self-consistent field Xα-scattered-wave method. The energy levels, contour maps and densities of states for the atom clusters Fe4 and Fe4B are analyzed and compared respectively, the effect of the B atoms on the electronic structure of atom cluster Fe4B is discussed, and some physical nature of amorphous alloy Fe80B20 is also discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 929-936. Published 1992-03-05 ELECTRONIC STRUCTURE OF ATOM CLUSTER Fe4B SHI SHUANG-HE, WANG XU-WEI, CHEN JIN-CHANG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 929-936. article doi:10.7498/aps.41.929 10.7498/aps.41.929 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.929 929-936 //www.getgobooth.com/en/article/doi/10.7498/aps.41.937 Author(s): FU ZHENG-MIN, LI ZHEN-WU, LI WEN-XIU <br/><p>A new compound Sr2CaMoO6 has been synthesized by solid stare sintering. The phase transition of this compound was investigated by means of DTA, X-ray powder diffraction, precise measurement of lattice parameters and other methods. It is discovered that the compound has a displacive phase transition of the first order at (767±5)℃. The low temperaiure phase, or Sr2CaMoO6, belongs to orthorhombic system, with space group Pmm2, its lattice parameters at room temperature are:a = 8.1933?, b = 5.7611? and c=5.8410?, the measured density is Dm= 4.97g/cm3, and each unit cell contains two formula weight. The high temperature phase, β-Sr2CaMoO6, belongs to the cubic system, with space group Fm3m and the lattice parameter is α = 8.281? at 800℃; Z = 4. The calculated density is Dx= 4.76g/cm3.The crystal structures of α Sr2CaMoO6 and β-Sr2CaMoO6 was also determined by means of the X-ray polycrystal diffraction method. The character of the structure and the factors influencing phase transition temperature are discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 937-947. Published 1992-03-05 Author(s): FU ZHENG-MIN, LI ZHEN-WU, LI WEN-XIU <br/><p>A new compound Sr2CaMoO6 has been synthesized by solid stare sintering. The phase transition of this compound was investigated by means of DTA, X-ray powder diffraction, precise measurement of lattice parameters and other methods. It is discovered that the compound has a displacive phase transition of the first order at (767±5)℃. The low temperaiure phase, or Sr2CaMoO6, belongs to orthorhombic system, with space group Pmm2, its lattice parameters at room temperature are:a = 8.1933?, b = 5.7611? and c=5.8410?, the measured density is Dm= 4.97g/cm3, and each unit cell contains two formula weight. The high temperature phase, β-Sr2CaMoO6, belongs to the cubic system, with space group Fm3m and the lattice parameter is α = 8.281? at 800℃; Z = 4. The calculated density is Dx= 4.76g/cm3.The crystal structures of α Sr2CaMoO6 and β-Sr2CaMoO6 was also determined by means of the X-ray polycrystal diffraction method. The character of the structure and the factors influencing phase transition temperature are discussed.</p> <br/>Acta Physica Sinica. 1992 41(6): 937-947. Published 1992-03-05 PHASE TRANSITION AND CRYSTAL STRUCTURE OF A NEW COMPOUND ——Sr2CaMoO6 FU ZHENG-MIN, LI ZHEN-WU, LI WEN-XIU 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 937-947. article doi:10.7498/aps.41.937 10.7498/aps.41.937 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.937 937-947 //www.getgobooth.com/en/article/doi/10.7498/aps.41.948 Author(s): SONG YAN, DING E-JIAN, HUANG ZU-QIA <br/><p>With Sullivan model as a start point, analysis study for the nature of wetting transition in binary system at three phase coexistence, the typical binary mixture, is conducted by means of trajectory expansion in dynamics approach, from which we modify and make supplements for our previous results.</p> <br/>Acta Physica Sinica. 1992 41(6): 948-959. Published 1992-03-05 Author(s): SONG YAN, DING E-JIAN, HUANG ZU-QIA <br/><p>With Sullivan model as a start point, analysis study for the nature of wetting transition in binary system at three phase coexistence, the typical binary mixture, is conducted by means of trajectory expansion in dynamics approach, from which we modify and make supplements for our previous results.</p> <br/>Acta Physica Sinica. 1992 41(6): 948-959. Published 1992-03-05 STUDY ON WETTING TRANSITION IN A MIXTURE FLUID(Ⅱ)——BINARY SYSTEM AT THREE PHASE COEXISTENCE SONG YAN, DING E-JIAN, HUANG ZU-QIA 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 948-959. article doi:10.7498/aps.41.948 10.7498/aps.41.948 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.948 948-959 //www.getgobooth.com/en/article/doi/10.7498/aps.41.960 Author(s): SONG YAN, DING E-JIAN, HUANG ZU-QIA <br/><p>The wetting transition at four phases coexistence state, a special case of binary Sullivan systems, is studied. Much of its properties can be driven out by the study of two phases coexistence state of the binary system, and the wetting transition of the first order, as well as that of the second order are present.</p> <br/>Acta Physica Sinica. 1992 41(6): 960-967. Published 1992-03-05 Author(s): SONG YAN, DING E-JIAN, HUANG ZU-QIA <br/><p>The wetting transition at four phases coexistence state, a special case of binary Sullivan systems, is studied. Much of its properties can be driven out by the study of two phases coexistence state of the binary system, and the wetting transition of the first order, as well as that of the second order are present.</p> <br/>Acta Physica Sinica. 1992 41(6): 960-967. Published 1992-03-05 STUDY ON WETTING TRANSITION IN A MIXTURE FLUID (Ⅲ)——BINARY SYSTEM AT FOUR PHASES COEXISTENCE SONG YAN, DING E-JIAN, HUANG ZU-QIA 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 960-967. article doi:10.7498/aps.41.960 10.7498/aps.41.960 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.960 960-967 //www.getgobooth.com/en/article/doi/10.7498/aps.41.968 Author(s): TANG JING-CHANG, FU SONG-BAO, JI HONG, CHEN YI-BING <br/><p>Using the multiple scattering cluster method (MSC), we have calculated the oxygen K-edge NEXAFS spectra of formate molecule which is the intermediate in the catalytic decomposition of formic acid over Cu(110) surface. The calculation shows that the formate is adsorbed at the short-bridge site of Cu(110) surface, the bond-lengths LC-0 and LCu-o are 1.26±0.01? and 1.975±0.02? respectively, the O-C-O bond angle is in the range of 130°-134°. This result agrees with that of photoelectron diffraction, and demonstrates that the multiple scattering cluster method is an effective one for the surface structure determination.</p> <br/>Acta Physica Sinica. 1992 41(6): 968-976. Published 1992-03-05 Author(s): TANG JING-CHANG, FU SONG-BAO, JI HONG, CHEN YI-BING <br/><p>Using the multiple scattering cluster method (MSC), we have calculated the oxygen K-edge NEXAFS spectra of formate molecule which is the intermediate in the catalytic decomposition of formic acid over Cu(110) surface. The calculation shows that the formate is adsorbed at the short-bridge site of Cu(110) surface, the bond-lengths LC-0 and LCu-o are 1.26±0.01? and 1.975±0.02? respectively, the O-C-O bond angle is in the range of 130°-134°. This result agrees with that of photoelectron diffraction, and demonstrates that the multiple scattering cluster method is an effective one for the surface structure determination.</p> <br/>Acta Physica Sinica. 1992 41(6): 968-976. Published 1992-03-05 STRUCTURE DETERMINATION OF HCOO-Cu(110) BY MULTIPLE SCATTERING CLUSTER METHOD TANG JING-CHANG, FU SONG-BAO, JI HONG, CHEN YI-BING 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 968-976. article doi:10.7498/aps.41.968 10.7498/aps.41.968 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.968 968-976 //www.getgobooth.com/en/article/doi/10.7498/aps.41.977 Author(s): CHEN CHUN, LI ZHENG-ZHONG, XU WANG <br/><p>The specific heat coefficient and magnetization of the heavy electron metals in a nonzero magnetic field are calculated by using the slave boson mean field theory. The results indicate that the heavy fermion feature of the system is depressed in the magnetic field. A theoretical explanation for anomalous volume magnetostriction of the heavy electron metals is also given in this paper.</p> <br/>Acta Physica Sinica. 1992 41(6): 977-984. Published 1992-03-05 Author(s): CHEN CHUN, LI ZHENG-ZHONG, XU WANG <br/><p>The specific heat coefficient and magnetization of the heavy electron metals in a nonzero magnetic field are calculated by using the slave boson mean field theory. The results indicate that the heavy fermion feature of the system is depressed in the magnetic field. A theoretical explanation for anomalous volume magnetostriction of the heavy electron metals is also given in this paper.</p> <br/>Acta Physica Sinica. 1992 41(6): 977-984. Published 1992-03-05 HEAVY ELECTRON METALS IN A NONZERO MAGNETIC FIELD CHEN CHUN, LI ZHENG-ZHONG, XU WANG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 977-984. article doi:10.7498/aps.41.977 10.7498/aps.41.977 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.977 977-984 //www.getgobooth.com/en/article/doi/10.7498/aps.41.985 Author(s): LI XIAO-LEI, LU FANG, SUN HENG-HUI, HUANG QING-HONG <br/><p>Defects charactistics of low-dose p+ implanted silicon after rapid thermal annealing (RTA) was studied. RTA at 600℃ can activate most implanted ions. The defects in samples after RTA below 800℃ are found mainly the ion-implantation induced damage defects. Dislocations are found in samples after RTA above 800℃. The ion-implantation damage defects and thermal stress during quenching step are responsible for the formation of dislocations. The concentration of defects in 1100℃RTA sample began to increace. Slip dislocations are induced by thermal stress in the wafer.</p> <br/>Acta Physica Sinica. 1992 41(6): 985-991. Published 1992-03-05 Author(s): LI XIAO-LEI, LU FANG, SUN HENG-HUI, HUANG QING-HONG <br/><p>Defects charactistics of low-dose p+ implanted silicon after rapid thermal annealing (RTA) was studied. RTA at 600℃ can activate most implanted ions. The defects in samples after RTA below 800℃ are found mainly the ion-implantation induced damage defects. Dislocations are found in samples after RTA above 800℃. The ion-implantation damage defects and thermal stress during quenching step are responsible for the formation of dislocations. The concentration of defects in 1100℃RTA sample began to increace. Slip dislocations are induced by thermal stress in the wafer.</p> <br/>Acta Physica Sinica. 1992 41(6): 985-991. Published 1992-03-05 STUDY OF DEFECTS IN LOW-DOSE P+ IMPLANTED AND RAPID THERMAL ANNEALED SILICON LI XIAO-LEI, LU FANG, SUN HENG-HUI, HUANG QING-HONG 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 985-991. article doi:10.7498/aps.41.985 10.7498/aps.41.985 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.985 985-991 //www.getgobooth.com/en/article/doi/10.7498/aps.41.992 Author(s): WANG XIANG-DONG, HU JI-HUANG, GE YU-QING, DAI DAO-XUAN <br/><p>Electronic states of Si(100)2×1 clean surface and Si(100)1×1-2H surface are studied with total current spectrometer. The occupied surface states are at 0.25, 8.4 and near 12 eV below thevalence band maximum, while the unoccupied surface states are at 0.7 eV above the valence band maximum. Two induced surface states of Si(100)1×1-2H are observed below the valence band maximum.</p> <br/>Acta Physica Sinica. 1992 41(6): 992-998. Published 1992-03-05 Author(s): WANG XIANG-DONG, HU JI-HUANG, GE YU-QING, DAI DAO-XUAN <br/><p>Electronic states of Si(100)2×1 clean surface and Si(100)1×1-2H surface are studied with total current spectrometer. The occupied surface states are at 0.25, 8.4 and near 12 eV below thevalence band maximum, while the unoccupied surface states are at 0.7 eV above the valence band maximum. Two induced surface states of Si(100)1×1-2H are observed below the valence band maximum.</p> <br/>Acta Physica Sinica. 1992 41(6): 992-998. Published 1992-03-05 TOTAL CURRENT SPECTRA STUDIES ON ELECTRONIC STATES OF Si(100) SURFACE WANG XIANG-DONG, HU JI-HUANG, GE YU-QING, DAI DAO-XUAN 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 992-998. article doi:10.7498/aps.41.992 10.7498/aps.41.992 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.992 992-998 //www.getgobooth.com/en/article/doi/10.7498/aps.41.999 Author(s): JIN GUANG-HAI, ZHANG LI-YUAN <br/><p>In this paper, more than sixty high-Tc oxide superconductors are analysed again with Vil-lars coordinates. Moreover, we introduce two new coordinates, namely, the average electrone-gativity and chemical combination valence. It is found that the high-Tc oxide superconductors are distributed more concentratively in the diagram of these new coordinates.</p> <br/>Acta Physica Sinica. 1992 41(6): 999-1004. Published 1992-03-05 Author(s): JIN GUANG-HAI, ZHANG LI-YUAN <br/><p>In this paper, more than sixty high-Tc oxide superconductors are analysed again with Vil-lars coordinates. Moreover, we introduce two new coordinates, namely, the average electrone-gativity and chemical combination valence. It is found that the high-Tc oxide superconductors are distributed more concentratively in the diagram of these new coordinates.</p> <br/>Acta Physica Sinica. 1992 41(6): 999-1004. Published 1992-03-05 ANALYSIS OF THE HIGH Tc OXIDE SUPERCONDUCTORS FROM THE GOLDEN COORDINATES JIN GUANG-HAI, ZHANG LI-YUAN 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 999-1004. article doi:10.7498/aps.41.999 10.7498/aps.41.999 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.999 999-1004 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1005 Author(s): ZHONG WEN-DING, LIU ZUN-XIAO <br/><p>The magnetization curves, the Curie temperature and the thermal dependence of the coercive force in the pseudobinary cubic Laves phase compounds Tb1-xGdxFe2(0≤x≤l) has been measured. The saturation magnetization decreases almost linearly from TbFe2 to GdFe2. The magnetic moment of the iron atoms is a constant(μFe -1.60±0.04μB) for the whole concentration range, while the moment of terbium atoms is smaller slightly than its free ion value of gJ = 9.0μB due to crystal-field effects. The coercive field has got two contributions: one cames from the intrinsic pinning of domain walls in the Peierls crystal pontential wells and the fluctuation of magnetocrystalline anisotropy at rare-earth site; this contribution is preponderant at low temperatures, decaying exponentially with increasing temperature. The other comes from the pinning of domain walls by the internal stresses, causing the appearance of free magnetic poles.</p> <br/>Acta Physica Sinica. 1992 41(6): 1005-1011. Published 1992-03-05 Author(s): ZHONG WEN-DING, LIU ZUN-XIAO <br/><p>The magnetization curves, the Curie temperature and the thermal dependence of the coercive force in the pseudobinary cubic Laves phase compounds Tb1-xGdxFe2(0≤x≤l) has been measured. The saturation magnetization decreases almost linearly from TbFe2 to GdFe2. The magnetic moment of the iron atoms is a constant(μFe -1.60±0.04μB) for the whole concentration range, while the moment of terbium atoms is smaller slightly than its free ion value of gJ = 9.0μB due to crystal-field effects. The coercive field has got two contributions: one cames from the intrinsic pinning of domain walls in the Peierls crystal pontential wells and the fluctuation of magnetocrystalline anisotropy at rare-earth site; this contribution is preponderant at low temperatures, decaying exponentially with increasing temperature. The other comes from the pinning of domain walls by the internal stresses, causing the appearance of free magnetic poles.</p> <br/>Acta Physica Sinica. 1992 41(6): 1005-1011. Published 1992-03-05 MAGNETIC MOMENTS AND COERCIVE FORCE OF Tb1-xGdxFe2 ZHONG WEN-DING, LIU ZUN-XIAO 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1005-1011. article doi:10.7498/aps.41.1005 10.7498/aps.41.1005 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1005 1005-1011 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1012 Author(s): TAI REN-ZHONO, LU FU-YUN, YUAN SHU-ZHONG, GUAN XIN-AN, LI BING <br/><p>With the theory of one-dimensional approximation, combined with the boundary conditions, an inhomogeneous electric field is derived from the foundamental equations of pieozoelec-tric effect. This inhomogeneous electric field will lead to generation of "electric grating", and "high-order grating" can also appear owing to coupling between "electric grating" and "acoustic grating". Linear electro-optic effect in PESO modulator is helpful to the diffraction and modulation of the incident light beam. The experimental results verify our conclusions.</p> <br/>Acta Physica Sinica. 1992 41(6): 1012-1018. Published 1992-03-05 Author(s): TAI REN-ZHONO, LU FU-YUN, YUAN SHU-ZHONG, GUAN XIN-AN, LI BING <br/><p>With the theory of one-dimensional approximation, combined with the boundary conditions, an inhomogeneous electric field is derived from the foundamental equations of pieozoelec-tric effect. This inhomogeneous electric field will lead to generation of "electric grating", and "high-order grating" can also appear owing to coupling between "electric grating" and "acoustic grating". Linear electro-optic effect in PESO modulator is helpful to the diffraction and modulation of the incident light beam. The experimental results verify our conclusions.</p> <br/>Acta Physica Sinica. 1992 41(6): 1012-1018. Published 1992-03-05 ELECTRO-OPTIC EFFECT IN PESO ACOUSTO-OPTIC MODULATOR TAI REN-ZHONO, LU FU-YUN, YUAN SHU-ZHONG, GUAN XIN-AN, LI BING 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1012-1018. article doi:10.7498/aps.41.1012 10.7498/aps.41.1012 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1012 1012-1018 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1019 Author(s): PENG JING-CUI <br/><p>Photo-induced absorption states in quasi-one-dimensional halogen-bridged mixed valence platinum complex is investigated. Based on the experimental data, a mechanism for photo-induced absorption is presented. Photo-induced absorption spectra both deformations of alternative and polaron induced for halogen ions are calculated. The comparison with experiments is made.</p> <br/>Acta Physica Sinica. 1992 41(6): 1019-1026. Published 1992-03-05 Author(s): PENG JING-CUI <br/><p>Photo-induced absorption states in quasi-one-dimensional halogen-bridged mixed valence platinum complex is investigated. Based on the experimental data, a mechanism for photo-induced absorption is presented. Photo-induced absorption spectra both deformations of alternative and polaron induced for halogen ions are calculated. The comparison with experiments is made.</p> <br/>Acta Physica Sinica. 1992 41(6): 1019-1026. Published 1992-03-05 PHOTO-INDUCED ABSORPTION BAND IN QUASI-ONE-DIMENSIONAL HALOGEN-BRIDGED MIXED-VALENCE PLATINUM COMPLEXES PENG JING-CUI 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1019-1026. article doi:10.7498/aps.41.1019 10.7498/aps.41.1019 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1019 1019-1026 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1027 Author(s): ZHENG HAI-CAI, GOU ZENG-GUANG, GUI MING, LI XIU-YING, MO YU-JUN <br/><p>The dependence of SERS intensity ISERS on the concentration c is studied experimentally for salicylic acid (SA) aqueous solution-Ag mirror system by measuring ISERS And the relation between ISERS and quantity of adsorbed molecules is also discussed. All the results suggest that the SERS technique indeed provides a efficient and high sensitive new method for studying adsorption isotherm property in solid-liquid system.</p> <br/>Acta Physica Sinica. 1992 41(6): 1027-1031. Published 1992-03-05 Author(s): ZHENG HAI-CAI, GOU ZENG-GUANG, GUI MING, LI XIU-YING, MO YU-JUN <br/><p>The dependence of SERS intensity ISERS on the concentration c is studied experimentally for salicylic acid (SA) aqueous solution-Ag mirror system by measuring ISERS And the relation between ISERS and quantity of adsorbed molecules is also discussed. All the results suggest that the SERS technique indeed provides a efficient and high sensitive new method for studying adsorption isotherm property in solid-liquid system.</p> <br/>Acta Physica Sinica. 1992 41(6): 1027-1031. Published 1992-03-05 DEPENDENCE OF ISERS ON CONCENTRATION AND ADSORPTION ISOTHERM PROPERTY FOR SALICYLIC ACID IN SOLID-LIQUID SYSTEM ZHENG HAI-CAI, GOU ZENG-GUANG, GUI MING, LI XIU-YING, MO YU-JUN 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1027-1031. article doi:10.7498/aps.41.1027 10.7498/aps.41.1027 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1027 1027-1031 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1032 Author(s): CHENG WEN-QIN, MEI XIAO-BING, LIU SHUANC, LIU YU-LONG, LI YONG-KANG, ZHOU JUN-MING <br/><p>The band-gap narrowing of p-type GaAs as a function of doping concentrafion has been investigated by photoluminescence spectroscopy on samples grown by molecular beam epitaxy on (110) semi-insulating GaAs. It was first found that the band-gap narrowing of p-type GaAs comes from the moving up of valence band, the location of dopant level (band) remains unchanged relative to conduction band, and the ionization energy decreases with the increase of doping concentration.</p> <br/>Acta Physica Sinica. 1992 41(6): 1032-1035. Published 1992-03-05 Author(s): CHENG WEN-QIN, MEI XIAO-BING, LIU SHUANC, LIU YU-LONG, LI YONG-KANG, ZHOU JUN-MING <br/><p>The band-gap narrowing of p-type GaAs as a function of doping concentrafion has been investigated by photoluminescence spectroscopy on samples grown by molecular beam epitaxy on (110) semi-insulating GaAs. It was first found that the band-gap narrowing of p-type GaAs comes from the moving up of valence band, the location of dopant level (band) remains unchanged relative to conduction band, and the ionization energy decreases with the increase of doping concentration.</p> <br/>Acta Physica Sinica. 1992 41(6): 1032-1035. Published 1992-03-05 THE EFFECT OF DOPING CONCENTRATION ON BAND-GAP NARROWING OF p-TYPE GaAs CHENG WEN-QIN, MEI XIAO-BING, LIU SHUANC, LIU YU-LONG, LI YONG-KANG, ZHOU JUN-MING 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1032-1035. article doi:10.7498/aps.41.1032 10.7498/aps.41.1032 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1032 1032-1035 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1036 Author(s): DONG GUO-SHENG, LU CHUN-MING, LI ZHE-SHEN, WANG XUN <br/><p>Auger electron spectroscopy (AES), X-ray photoelectron spectroscop (XPS) and ultraviolet photoelectron spectroscopy (UPS) have been used to study the InSb(lll) surfaces treated with (NH4)O2Sx. It is found that after the sulfide treatment, the sample surfaces are covered by a thin overlayer of sulfide (8?), which prevents the sample surface from oxidization and carbon contamination in the air. XPS and UPS results show that S atoms bond to both Sb atoms and In atoms on the sample surfaces. Sb-S bonding peaks in the Sb3d spectra exhibit a core level shift of 1.9eV, the bonding of S to In atoms causes an In4d core level shift of 0.6-0.7eV. A thermal annealing at 350℃ gives rise to the decomposition of Sb-S bonding and the evaporation Sb atoms from the sample surfaces. In-S bonding can not be decomposed completely by annealing up to 500℃ and a small amount of S atoms remains on the sample surfaces in the form of indium sulfide.</p> <br/>Acta Physica Sinica. 1992 41(6): 1036-1043. Published 1992-03-05 Author(s): DONG GUO-SHENG, LU CHUN-MING, LI ZHE-SHEN, WANG XUN <br/><p>Auger electron spectroscopy (AES), X-ray photoelectron spectroscop (XPS) and ultraviolet photoelectron spectroscopy (UPS) have been used to study the InSb(lll) surfaces treated with (NH4)O2Sx. It is found that after the sulfide treatment, the sample surfaces are covered by a thin overlayer of sulfide (8?), which prevents the sample surface from oxidization and carbon contamination in the air. XPS and UPS results show that S atoms bond to both Sb atoms and In atoms on the sample surfaces. Sb-S bonding peaks in the Sb3d spectra exhibit a core level shift of 1.9eV, the bonding of S to In atoms causes an In4d core level shift of 0.6-0.7eV. A thermal annealing at 350℃ gives rise to the decomposition of Sb-S bonding and the evaporation Sb atoms from the sample surfaces. In-S bonding can not be decomposed completely by annealing up to 500℃ and a small amount of S atoms remains on the sample surfaces in the form of indium sulfide.</p> <br/>Acta Physica Sinica. 1992 41(6): 1036-1043. Published 1992-03-05 A STUDY OF SULFIDE TREATED InSb(111) SURFACES DONG GUO-SHENG, LU CHUN-MING, LI ZHE-SHEN, WANG XUN 1992-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(6): 1036-1043. article doi:10.7498/aps.41.1036 10.7498/aps.41.1036 Acta Physica Sinica 41 6 1992-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.41.1036 1036-1043

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