//m.getgobooth.com/ 必威体育下载 daily 15 2024-09-05 15:36:21 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-09-05 15:36:21 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 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1745 Author(s): BAO CHENG-GUANG <br/><p>The qualitative features of the four intrashell P states of the boron atom, i.e., the 2Ｐ01 (ground state), 2Ｐ02，2Ｐe1 and 4Ｐe1 states, are investigated. The interelectronic correlation is found to be strongly spindependent. The preferrence of orientation (redative to the total angular momentum) is found to be explicit. The geometric structures of relevant states and the modes of internal motion have been investigated. The decisive effect of quantum mechanical symmetry has been emphasized.</p> <br/>Acta Physica Sinica. 1994 43(11): 1745-1753. Published 1994-11-20 Author(s): BAO CHENG-GUANG <br/><p>The qualitative features of the four intrashell P states of the boron atom, i.e., the 2Ｐ01 (ground state), 2Ｐ02，2Ｐe1 and 4Ｐe1 states, are investigated. The interelectronic correlation is found to be strongly spindependent. The preferrence of orientation (redative to the total angular momentum) is found to be explicit. The geometric structures of relevant states and the modes of internal motion have been investigated. The decisive effect of quantum mechanical symmetry has been emphasized.</p> <br/>Acta Physica Sinica. 1994 43(11): 1745-1753. Published 1994-11-20 INTERELECTRONIC CORRELATION AND QUALITATIVE FEATURES OF THE FOUR INTRASHELL P STATES OF BORON ATOM BAO CHENG-GUANG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1745-1753. article doi:10.7498/aps.43.1745 10.7498/aps.43.1745 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1745 1745-1753 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1754 Author(s): DING GUANG-LIANG, LIU BING-MO, WANG JIA-MIN, GONG SHUN-SHENG <br/><p>The experimental study of the relations between ｜ml｜ and field ionization thresholds of Stark components in Rydberg states of atomic cesium is reported. The three expressions of ionization thresholds of ｜ml｜=0，1,2 in atomic cesium are obtained completely from the same experiment.</p> <br/>Acta Physica Sinica. 1994 43(11): 1754-1758. Published 1994-11-20 Author(s): DING GUANG-LIANG, LIU BING-MO, WANG JIA-MIN, GONG SHUN-SHENG <br/><p>The experimental study of the relations between ｜ml｜ and field ionization thresholds of Stark components in Rydberg states of atomic cesium is reported. The three expressions of ionization thresholds of ｜ml｜=0，1,2 in atomic cesium are obtained completely from the same experiment.</p> <br/>Acta Physica Sinica. 1994 43(11): 1754-1758. Published 1994-11-20 EXPERIMENTAL STUDY OF RELATIONS BETWEEN ｜ml｜ AND FIELD STARK IONIZATION THRESHOLD IN RYDBERG Cs ATOMS DING GUANG-LIANG, LIU BING-MO, WANG JIA-MIN, GONG SHUN-SHENG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1754-1758. article doi:10.7498/aps.43.1754 10.7498/aps.43.1754 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1754 1754-1758 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1759 Author(s): CHEN XUE-JUN, WANG YAN, LI BO, DENG XIN-YUAN <br/><p>A brief of the parameterized inverse scattering methods including WKB and quantum-approaches are described at first and then,these methods are tested in detail by an example of model potential.</p> <br/>Acta Physica Sinica. 1994 43(11): 1759-1763. Published 1994-11-20 Author(s): CHEN XUE-JUN, WANG YAN, LI BO, DENG XIN-YUAN <br/><p>A brief of the parameterized inverse scattering methods including WKB and quantum-approaches are described at first and then,these methods are tested in detail by an example of model potential.</p> <br/>Acta Physica Sinica. 1994 43(11): 1759-1763. Published 1994-11-20 INVERSE SCATTERING THEORY FOR ELECTRON COLLISION WITH ATOMS AND MOLECULES CHEN XUE-JUN, WANG YAN, LI BO, DENG XIN-YUAN 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1759-1763. article doi:10.7498/aps.43.1759 10.7498/aps.43.1759 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1759 1759-1763 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1764 Author(s): XIA ZONG-HUANG, MA HONG-JI, FU SHENG-CHUN <br/><p>In low projectile energy region, the alignment of L3 vacancy state in Au and the projectile energy dependence of alignment were measured for several kinds of ions and Au collision systems by a simple method. Using the plane-wave Born approximation (PWBA) and taking into account the coulomb deflection effect, the alignment was calculated. It is shown that the present calculated results are closer to the experimental data. The alignment behavior of L3 vacancy state in Au is furtherly discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1764-1769. Published 1994-11-20 Author(s): XIA ZONG-HUANG, MA HONG-JI, FU SHENG-CHUN <br/><p>In low projectile energy region, the alignment of L3 vacancy state in Au and the projectile energy dependence of alignment were measured for several kinds of ions and Au collision systems by a simple method. Using the plane-wave Born approximation (PWBA) and taking into account the coulomb deflection effect, the alignment was calculated. It is shown that the present calculated results are closer to the experimental data. The alignment behavior of L3 vacancy state in Au is furtherly discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1764-1769. Published 1994-11-20 A STUDY ON THE BEHAVIOR OF THE ALIGNMENT FOR L3 VACANCY STATE IN Au BY IMPACT IONISATION XIA ZONG-HUANG, MA HONG-JI, FU SHENG-CHUN 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1764-1769. article doi:10.7498/aps.43.1764 10.7498/aps.43.1764 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1764 1764-1769 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1770 Author(s): LU YI, LIU SI-MIN, SHU HUA-DE, SUN QIAN, ZHANG GUANG-YIN, XU JING-JUN, LIU JUN-MIN <br/><p>The real-time optical correlation-storage in photorefractive crystals has firstly been realized. It possesses the advantages of both storage and correlator, as well as the real-time character of photorefractive devices. It can performa real-time and fast selection of imformation correlated to the input ones from a great amount of stored imformation. The correlation degree of every information with the input ones and its coding number are immediately obtained from the intensity and position of the correlation points. This principle is based on the selectivity of photorefractive matched filter. Hence this device has wide prospect of application.</p> <br/>Acta Physica Sinica. 1994 43(11): 1770-1775. Published 1994-11-20 Author(s): LU YI, LIU SI-MIN, SHU HUA-DE, SUN QIAN, ZHANG GUANG-YIN, XU JING-JUN, LIU JUN-MIN <br/><p>The real-time optical correlation-storage in photorefractive crystals has firstly been realized. It possesses the advantages of both storage and correlator, as well as the real-time character of photorefractive devices. It can performa real-time and fast selection of imformation correlated to the input ones from a great amount of stored imformation. The correlation degree of every information with the input ones and its coding number are immediately obtained from the intensity and position of the correlation points. This principle is based on the selectivity of photorefractive matched filter. Hence this device has wide prospect of application.</p> <br/>Acta Physica Sinica. 1994 43(11): 1770-1775. Published 1994-11-20 STUDIES OF THE REAL-TIME OPTICAL CORRELATION STORAGE IN LiNbO3:Fe Photorefractive Crystals LU YI, LIU SI-MIN, SHU HUA-DE, SUN QIAN, ZHANG GUANG-YIN, XU JING-JUN, LIU JUN-MIN 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1770-1775. article doi:10.7498/aps.43.1770 10.7498/aps.43.1770 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1770 1770-1775 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1776 Author(s): FANG MAO-FA <br/><p>The evolution law of the field entropy in the J-C model without rotating-wav approximation are invesitigated. Comparing with the results obtained with the rotating-wave approximation, the influence of the virtual photon processes on the evolution of the field entropy are discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1776-1786. Published 1994-11-20 Author(s): FANG MAO-FA <br/><p>The evolution law of the field entropy in the J-C model without rotating-wav approximation are invesitigated. Comparing with the results obtained with the rotating-wave approximation, the influence of the virtual photon processes on the evolution of the field entropy are discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1776-1786. Published 1994-11-20 EVOLUTION OF THE FIELD ENTROPY IN JAYNES-CUMMINGS MODEL WITHOUT ROTATING-WAVE APPROXIMATION FANG MAO-FA 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1776-1786. article doi:10.7498/aps.43.1776 10.7498/aps.43.1776 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1776 1776-1786 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1787 Author(s): LU HONG, PENG JIN-SHENG <br/><p>In this paper, we study the properties of two kinds of SU(1,1) coherent states of light with Bargman index k=1/4 and k=3/4 and show that they posses different quantum statistical properties. The atomic dynamical behavior in a two-photon Jaynes-Cummings model with initial SU(1,1)coherent state field are discussed. We show that the time evolution of atomic inversion displays peculiar periodic oscillation and pulse which are very different from coherent states of light.</p> <br/>Acta Physica Sinica. 1994 43(11): 1787-1794. Published 1994-11-20 Author(s): LU HONG, PENG JIN-SHENG <br/><p>In this paper, we study the properties of two kinds of SU(1,1) coherent states of light with Bargman index k=1/4 and k=3/4 and show that they posses different quantum statistical properties. The atomic dynamical behavior in a two-photon Jaynes-Cummings model with initial SU(1,1)coherent state field are discussed. We show that the time evolution of atomic inversion displays peculiar periodic oscillation and pulse which are very different from coherent states of light.</p> <br/>Acta Physica Sinica. 1994 43(11): 1787-1794. Published 1994-11-20 STATISTICAL PROPERTIES OF SU(1,1) COHERENT STATES OF LIGHT AND ITS INFLUENCE ON DYNAMICAL BEHAVIORS OF THE ATOM LU HONG, PENG JIN-SHENG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1787-1794. article doi:10.7498/aps.43.1787 10.7498/aps.43.1787 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1787 1787-1794 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1795 Author(s): NI XIAO-WU, LU JIAN, HE AN-ZHI <br/><p>Theoretical and experimental study has been made for the process of hard-des-truction produced by a laser acting upon the surface of charge-coupled devices (CCD) having the MOS structere. It is suggested that the thermal action of laser and the mechanical action of laser plasma shock wave are the main causes for destruction of the structure of the CCD. Optical breakdown threshold, visible damage threshold, thermal melting threshold of semiconductor materials of the CCD device by YAG laser and laser energy threshold caused the whole device to faiture are obtained.</p> <br/>Acta Physica Sinica. 1994 43(11): 1795-1802. Published 1994-11-20 Author(s): NI XIAO-WU, LU JIAN, HE AN-ZHI <br/><p>Theoretical and experimental study has been made for the process of hard-des-truction produced by a laser acting upon the surface of charge-coupled devices (CCD) having the MOS structere. It is suggested that the thermal action of laser and the mechanical action of laser plasma shock wave are the main causes for destruction of the structure of the CCD. Optical breakdown threshold, visible damage threshold, thermal melting threshold of semiconductor materials of the CCD device by YAG laser and laser energy threshold caused the whole device to faiture are obtained.</p> <br/>Acta Physica Sinica. 1994 43(11): 1795-1802. Published 1994-11-20 STUDY OF HARD-DESTRUCTIVE MECHANISM OF THE CHARGE-COUPLED DEVICES BY A LASER NI XIAO-WU, LU JIAN, HE AN-ZHI 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1795-1802. article doi:10.7498/aps.43.1795 10.7498/aps.43.1795 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1795 1795-1802 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1803 Author(s): CHEN LU-JUN, LIANG CHANG-HONG, WU HONG-SHI <br/><p>Based on the small-amplitude approximation on a CW pedestal, the role of self-steepening effect in nonlinear dynamics and transmmision of soliton in normal and anomalous dispersion regions is investigated. The results show that, by taking into account the loss and gain, as well as the self-induced Raman effect, there exist both bright and dark small-amplitude solitons in both normal and anomalous dispersion regions. Especially, there exist the types of solitons opposite to the ordinary types of bright or dark solitons in both regions.</p> <br/>Acta Physica Sinica. 1994 43(11): 1803-1808. Published 1994-11-20 Author(s): CHEN LU-JUN, LIANG CHANG-HONG, WU HONG-SHI <br/><p>Based on the small-amplitude approximation on a CW pedestal, the role of self-steepening effect in nonlinear dynamics and transmmision of soliton in normal and anomalous dispersion regions is investigated. The results show that, by taking into account the loss and gain, as well as the self-induced Raman effect, there exist both bright and dark small-amplitude solitons in both normal and anomalous dispersion regions. Especially, there exist the types of solitons opposite to the ordinary types of bright or dark solitons in both regions.</p> <br/>Acta Physica Sinica. 1994 43(11): 1803-1808. Published 1994-11-20 SMALL-AMPLITUDE SOLITONS SUPPORTED BY THE SELF-STEEPENING EFFECT IN OPTICAL FIBERS CHEN LU-JUN, LIANG CHANG-HONG, WU HONG-SHI 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1803-1808. article doi:10.7498/aps.43.1803 10.7498/aps.43.1803 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1803 1803-1808 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1809 Author(s): JIA ZHENG-MING, YANG GEN-QING, CHENG ZHAO-NIAN, LIU XIANG-HUAI, ZOU SHI-CHANG <br/><p>Molecular dynamics simulations were performed for 1-100eV particle bombardments of Si(001)-2×1 surface. The two dimensional pair correlation functions were obtained to investigate the arrangement of surface atoms after such bombardments. The results show that 10eV and 100eV bombardments had the some effects on the behaviour of surface atoms. On one hand, 10eV and 100eV bombardments improved the mobility of surface atoms and produced more dimers. On the other hand, they increased the disordering of surface atom's arrangement and made the surface tend to be amorphous.</p> <br/>Acta Physica Sinica. 1994 43(11): 1809-1815. Published 1994-11-20 Author(s): JIA ZHENG-MING, YANG GEN-QING, CHENG ZHAO-NIAN, LIU XIANG-HUAI, ZOU SHI-CHANG <br/><p>Molecular dynamics simulations were performed for 1-100eV particle bombardments of Si(001)-2×1 surface. The two dimensional pair correlation functions were obtained to investigate the arrangement of surface atoms after such bombardments. The results show that 10eV and 100eV bombardments had the some effects on the behaviour of surface atoms. On one hand, 10eV and 100eV bombardments improved the mobility of surface atoms and produced more dimers. On the other hand, they increased the disordering of surface atom's arrangement and made the surface tend to be amorphous.</p> <br/>Acta Physica Sinica. 1994 43(11): 1809-1815. Published 1994-11-20 STUDY OF EFFECTS OF LOW-ENERGY BOMBARDMENTS OF Si(001)-2×1 BY MOLECULAR DYNAMICS SIMULATION JIA ZHENG-MING, YANG GEN-QING, CHENG ZHAO-NIAN, LIU XIANG-HUAI, ZOU SHI-CHANG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1809-1815. article doi:10.7498/aps.43.1809 10.7498/aps.43.1809 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1809 1809-1815 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1816 Author(s): WANG ZHEN-XIA, PAN JI-SHENG, ZHANG JI-PING, ZHU FU-YING <br/><p>The Sn atom depth-profiles in the micro-phase region of the Ａｌ70Ｓｎ30 alloy surface for before and after the 27keV Ar+ ions bombardment have been studied using micro-beam Rutherford backscattering spectroscopy (M-RBS) analysis methods. The experimental results shown that the depth-profiles of the Sn atom between Al-rich phase region and Sn-rich phase region, and these phase regions locate on the unsputtered and sputtered surface are different.</p> <br/>Acta Physica Sinica. 1994 43(11): 1816-1820. Published 1994-11-20 Author(s): WANG ZHEN-XIA, PAN JI-SHENG, ZHANG JI-PING, ZHU FU-YING <br/><p>The Sn atom depth-profiles in the micro-phase region of the Ａｌ70Ｓｎ30 alloy surface for before and after the 27keV Ar+ ions bombardment have been studied using micro-beam Rutherford backscattering spectroscopy (M-RBS) analysis methods. The experimental results shown that the depth-profiles of the Sn atom between Al-rich phase region and Sn-rich phase region, and these phase regions locate on the unsputtered and sputtered surface are different.</p> <br/>Acta Physica Sinica. 1994 43(11): 1816-1820. Published 1994-11-20 LOCALIZATION OF THE COMPONENT ATOM DEPTH-PROFILES IN Al-Sn ALLOY SURFACE LAYER WANG ZHEN-XIA, PAN JI-SHENG, ZHANG JI-PING, ZHU FU-YING 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1816-1820. article doi:10.7498/aps.43.1816 10.7498/aps.43.1816 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1816 1816-1820 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1821 Author(s): DU YING-LEI, WU BAI-MEI <br/><p>The thermal conductivity and thermal diffusivity of ZrO2 coatings were studied using arc-photothermal evaluation technique in which the sample was heated at front surface and detected at back surface, and finite-difference thermal flow model was applied. The values of thermal conductivity and thermal diffusivity of ZrO2 are ｋ＝０．００６９Ｊ／ｃｍ·Ｋ·ｓ and α＝０．００２８ｃｍ2／ｓ, respectively. It is shown that, first, the finite-difference thermal flow model is an available and useful method for the multilayer coating system, and, second, the arc photothermal evaluation technique has low cost of equipment, and more simple and convenient measurement.</p> <br/>Acta Physica Sinica. 1994 43(11): 1821-1827. Published 1994-11-20 Author(s): DU YING-LEI, WU BAI-MEI <br/><p>The thermal conductivity and thermal diffusivity of ZrO2 coatings were studied using arc-photothermal evaluation technique in which the sample was heated at front surface and detected at back surface, and finite-difference thermal flow model was applied. The values of thermal conductivity and thermal diffusivity of ZrO2 are ｋ＝０．００６９Ｊ／ｃｍ·Ｋ·ｓ and α＝０．００２８ｃｍ2／ｓ, respectively. It is shown that, first, the finite-difference thermal flow model is an available and useful method for the multilayer coating system, and, second, the arc photothermal evaluation technique has low cost of equipment, and more simple and convenient measurement.</p> <br/>Acta Physica Sinica. 1994 43(11): 1821-1827. Published 1994-11-20 A STUDY ON THERMAL PROPERTIES FOR ZrO2 COATINGS BY ARC PHOTOTHERMAL TECHNIQUE AND FINITE-DIFFERENCE THERMAL FLOW MODEL DU YING-LEI, WU BAI-MEI 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1821-1827. article doi:10.7498/aps.43.1821 10.7498/aps.43.1821 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1821 1821-1827 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1828 Author(s): WEI GUO-ZHU <br/><p>Based on the single-site electron correlation, the local approach has been used to investigate the ferromagnetic phase in the Hubbard-Hirsch model. Using the R =0,α approximation in second-order calculation, the electron Correlation effect on the phase diagram has been studied Carefully. Comparing with those of the R=0 approximation, the electron correlation effect becomes weaker due to taking into aceount the nondiagonal elements of density matrix.</p> <br/>Acta Physica Sinica. 1994 43(11): 1828-1832. Published 1994-11-20 Author(s): WEI GUO-ZHU <br/><p>Based on the single-site electron correlation, the local approach has been used to investigate the ferromagnetic phase in the Hubbard-Hirsch model. Using the R =0,α approximation in second-order calculation, the electron Correlation effect on the phase diagram has been studied Carefully. Comparing with those of the R=0 approximation, the electron correlation effect becomes weaker due to taking into aceount the nondiagonal elements of density matrix.</p> <br/>Acta Physica Sinica. 1994 43(11): 1828-1832. Published 1994-11-20 ELECTRON CORRELATION EFFECT IN THE HUBBARD-HIRSCH MODEL WEI GUO-ZHU 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1828-1832. article doi:10.7498/aps.43.1828 10.7498/aps.43.1828 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1828 1828-1832 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1833 Author(s): HUANG QING-PENG, FU RONG-TANG, SUN XIN, FU ROU-LI <br/><p>Exciton polaron states in C60 molecular are theoretically studied in the tight-binding approach supplemented by the extended Hubbard interaction. The binding energies of the lowest singlet and triplet excitons depend sensitively upon the electron correlation. Then the exciton polaron is formed due to the electron-lattice coupling. Relevent experiments in photo-luminescence spectrum of Cso can be explained qualitatively by the present model with moderate interaction strength Ｕ～５．０ｅＶ，Ｖ～２．０ｅＶ.</p> <br/>Acta Physica Sinica. 1994 43(11): 1833-1839. Published 1994-11-20 Author(s): HUANG QING-PENG, FU RONG-TANG, SUN XIN, FU ROU-LI <br/><p>Exciton polaron states in C60 molecular are theoretically studied in the tight-binding approach supplemented by the extended Hubbard interaction. The binding energies of the lowest singlet and triplet excitons depend sensitively upon the electron correlation. Then the exciton polaron is formed due to the electron-lattice coupling. Relevent experiments in photo-luminescence spectrum of Cso can be explained qualitatively by the present model with moderate interaction strength Ｕ～５．０ｅＶ，Ｖ～２．０ｅＶ.</p> <br/>Acta Physica Sinica. 1994 43(11): 1833-1839. Published 1994-11-20 ELECTRON CORRELATION EFFECT ON C60 EXCITON POLARON HUANG QING-PENG, FU RONG-TANG, SUN XIN, FU ROU-LI 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1833-1839. article doi:10.7498/aps.43.1833 10.7498/aps.43.1833 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1833 1833-1839 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1840 Author(s): HUANG TONG-KAI, TETSURO NAKAMURA <br/><p>The temperature dependence of resistivity and magnetic susceptibility was measured for both BaSn1-xSbxO3-δ and Ba1-yLaySnO3-δ systems below room temperature. The results show that the mechanism of conduction is the variable range hopping for both systems at lower temperature. Whereas the two types of mechanism of conduction at higher temperature, are considered the nearest-neighbor hopping (Ba1-yLaySnO3-δ)and as the excitation of electrons to the conduction band (BaSn1-xSbxO3-δ)</p> <br/>Acta Physica Sinica. 1994 43(11): 1840-1846. Published 1994-11-20 Author(s): HUANG TONG-KAI, TETSURO NAKAMURA <br/><p>The temperature dependence of resistivity and magnetic susceptibility was measured for both BaSn1-xSbxO3-δ and Ba1-yLaySnO3-δ systems below room temperature. The results show that the mechanism of conduction is the variable range hopping for both systems at lower temperature. Whereas the two types of mechanism of conduction at higher temperature, are considered the nearest-neighbor hopping (Ba1-yLaySnO3-δ)and as the excitation of electrons to the conduction band (BaSn1-xSbxO3-δ)</p> <br/>Acta Physica Sinica. 1994 43(11): 1840-1846. Published 1994-11-20 MECHANISM OF CONDUCTION IN BaSn1-xSbxO3-δ AND Ba1-yLaySnO3-δ HUANG TONG-KAI, TETSURO NAKAMURA 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1840-1846. article doi:10.7498/aps.43.1840 10.7498/aps.43.1840 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1840 1840-1846 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1847 Author(s): CHEN GUANG-HUA, GUO YONG-PING, YAO JIANG-HONG, SONG ZHI-ZHONG, ZHANG FANG-QING <br/><p>The a-Si: H/a-SiCx: H superlattices were fabricated by r. f. plasma CVD. The blue shift of optical bandgap and construction of the superlattices were present. The interface abruptness was determined by low-angle X-ray diffraction. The constant photocurrent method and IR measurement showed that there existed excess hydrogen and high concentration of Si-C bonds at a-Si:H/a-SiCx:H interfaces. The thermal stability of interfacial hydrogen was poor. The interfacial defect density was about １．２×１０１１ｃｍ-2.</p> <br/>Acta Physica Sinica. 1994 43(11): 1847-1853. Published 1994-11-20 Author(s): CHEN GUANG-HUA, GUO YONG-PING, YAO JIANG-HONG, SONG ZHI-ZHONG, ZHANG FANG-QING <br/><p>The a-Si: H/a-SiCx: H superlattices were fabricated by r. f. plasma CVD. The blue shift of optical bandgap and construction of the superlattices were present. The interface abruptness was determined by low-angle X-ray diffraction. The constant photocurrent method and IR measurement showed that there existed excess hydrogen and high concentration of Si-C bonds at a-Si:H/a-SiCx:H interfaces. The thermal stability of interfacial hydrogen was poor. The interfacial defect density was about １．２×１０１１ｃｍ-2.</p> <br/>Acta Physica Sinica. 1994 43(11): 1847-1853. Published 1994-11-20 PROPERTIES OF INTERFACE OF a-Si:H/a-SiCx: H SUPERLATTICE CHEN GUANG-HUA, GUO YONG-PING, YAO JIANG-HONG, SONG ZHI-ZHONG, ZHANG FANG-QING 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1847-1853. article doi:10.7498/aps.43.1847 10.7498/aps.43.1847 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1847 1847-1853 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1854 Author(s): CAO XIAO-WEN, Y. J. TANG, J. C. HO <br/><p>Dependence of superconducting Tc upon Pr-substitution concentration x was studied systematically in Ｒ1-xＰｒxＢａ2Ｃｕ3Ｏ7-δ system with R=Nd, Dy, Tm, Yb and Lu. It was found that there is a Tc-plateau in the range of low x as R３＋ radius ｒi≤ｒi(Dy). The Pr-concentration width corresponded by Tc-plateau exhibits a R３＋ ion size effect. We suggest that the ion size effect of Tc-plateau might result from the change of local state of Pr 4f electron. A critical R３＋ radius, ｒic, is suggested and superconductivity disappears as ｒi＞ｒic.</p> <br/>Acta Physica Sinica. 1994 43(11): 1854-1859. Published 1994-11-20 Author(s): CAO XIAO-WEN, Y. J. TANG, J. C. HO <br/><p>Dependence of superconducting Tc upon Pr-substitution concentration x was studied systematically in Ｒ1-xＰｒxＢａ2Ｃｕ3Ｏ7-δ system with R=Nd, Dy, Tm, Yb and Lu. It was found that there is a Tc-plateau in the range of low x as R３＋ radius ｒi≤ｒi(Dy). The Pr-concentration width corresponded by Tc-plateau exhibits a R３＋ ion size effect. We suggest that the ion size effect of Tc-plateau might result from the change of local state of Pr 4f electron. A critical R３＋ radius, ｒic, is suggested and superconductivity disappears as ｒi＞ｒic.</p> <br/>Acta Physica Sinica. 1994 43(11): 1854-1859. Published 1994-11-20 ION SIZE EFFECT OF Tc-PLATEAU IN R1-xPrxBa2Cu3O7-δ CAO XIAO-WEN, Y. J. TANG, J. C. HO 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1854-1859. article doi:10.7498/aps.43.1854 10.7498/aps.43.1854 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1854 1854-1859 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1860 Author(s): XIONG GUANG-CHENG, ZOU YING-HUA, XIA ZONG-JU, YUAN PING, LIAN GUI-JUN, LI JIE <br/><p>The femtosecond pulsed laser and pump-probe method have been used to measure the transient change of reflectivity of YBa2Cu3Ｏ７－δ(δ=0.0, 0.1, 0.4 and 0.8) thin films. From the experimental curves the transient changes are found to be very different for samples with different oxygen content. The sign of the changes can be reversed as decreasing the oxygen content. It may be attributed to the changes of energy band structure near the Fermi level. After fitting the experimental data, we reveal that the electron-phonon coupling in the sample of δ=0.4 is much weaker than high Tc(δ=0.0) sample.</p> <br/>Acta Physica Sinica. 1994 43(11): 1860-1865. Published 1994-11-20 Author(s): XIONG GUANG-CHENG, ZOU YING-HUA, XIA ZONG-JU, YUAN PING, LIAN GUI-JUN, LI JIE <br/><p>The femtosecond pulsed laser and pump-probe method have been used to measure the transient change of reflectivity of YBa2Cu3Ｏ７－δ(δ=0.0, 0.1, 0.4 and 0.8) thin films. From the experimental curves the transient changes are found to be very different for samples with different oxygen content. The sign of the changes can be reversed as decreasing the oxygen content. It may be attributed to the changes of energy band structure near the Fermi level. After fitting the experimental data, we reveal that the electron-phonon coupling in the sample of δ=0.4 is much weaker than high Tc(δ=0.0) sample.</p> <br/>Acta Physica Sinica. 1994 43(11): 1860-1865. Published 1994-11-20 THE RELATIVE FERMI LEVEL POSITION AND THE ELECTRON-PHONON COUPLING OF YBa2Cu3Ｏ７－δ STUDIED BY FEMTOSECOND TRANSIENT REFLECTIVITY XIONG GUANG-CHENG, ZOU YING-HUA, XIA ZONG-JU, YUAN PING, LIAN GUI-JUN, LI JIE 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1860-1865. article doi:10.7498/aps.43.1860 10.7498/aps.43.1860 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1860 1860-1865 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1866 Author(s): FANG ZHONG, LIU ZU-LI, YAO KAI-LUN, LI ZAI-GUANG <br/><p>The ferromagnetic state in quasi-one-dimensional organic ferromagnet poly-SIPO has been studied. We consider the electron hoping, electron-electron correlation and Pierls instability in one-dimensional system. And self-consistent calculations are performed to investigate the structure of energy band and the distribution of spin density. The effects of the above aspects on the ferromagnetic state are studied. The results show that the ground state is a stable ferromagnetic state in this system.</p> <br/>Acta Physica Sinica. 1994 43(11): 1866-1870. Published 1994-11-20 Author(s): FANG ZHONG, LIU ZU-LI, YAO KAI-LUN, LI ZAI-GUANG <br/><p>The ferromagnetic state in quasi-one-dimensional organic ferromagnet poly-SIPO has been studied. We consider the electron hoping, electron-electron correlation and Pierls instability in one-dimensional system. And self-consistent calculations are performed to investigate the structure of energy band and the distribution of spin density. The effects of the above aspects on the ferromagnetic state are studied. The results show that the ground state is a stable ferromagnetic state in this system.</p> <br/>Acta Physica Sinica. 1994 43(11): 1866-1870. Published 1994-11-20 STUDY ON THE FERROMAGNETIC STATE IN QUASI-ONE-DIMENSIONAL ORGANIC FERROMAGNETIC FANG ZHONG, LIU ZU-LI, YAO KAI-LUN, LI ZAI-GUANG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1866-1870. article doi:10.7498/aps.43.1866 10.7498/aps.43.1866 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1866 1866-1870 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1871 Author(s): LIU FANG-XIN, ZHANG CHEN-HUA, JIN SI-ZHA0, XUAN ZHI-HUA, LI ZONG-MING <br/><p>The γ-ray radiolytic defect in optical fiber has been studied by the electron spin resonance method. It is found that a series of paramagnetic defects have been formed by the γ-ray irradiation; the densities of the defect centers increase with the irradiation doses, and the types of defects are mainly the E′ center, the non-bridging oxygen hole center and the perody radical (OHC). The defects production mechanism is also discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1871-1875. Published 1994-11-20 Author(s): LIU FANG-XIN, ZHANG CHEN-HUA, JIN SI-ZHA0, XUAN ZHI-HUA, LI ZONG-MING <br/><p>The γ-ray radiolytic defect in optical fiber has been studied by the electron spin resonance method. It is found that a series of paramagnetic defects have been formed by the γ-ray irradiation; the densities of the defect centers increase with the irradiation doses, and the types of defects are mainly the E′ center, the non-bridging oxygen hole center and the perody radical (OHC). The defects production mechanism is also discussed.</p> <br/>Acta Physica Sinica. 1994 43(11): 1871-1875. Published 1994-11-20 ELECTRON SPIN RESONANCE STUDY ON RADIOLYTIC DEFECT IN OPTICAL FIBER LIU FANG-XIN, ZHANG CHEN-HUA, JIN SI-ZHA0, XUAN ZHI-HUA, LI ZONG-MING 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1871-1875. article doi:10.7498/aps.43.1871 10.7498/aps.43.1871 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1871 1871-1875 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1876 Author(s): LI JIAN, LIU CUN-YE, LIANG YI-PING, REN HONG-XIANG, DENG ZHAO-JING, LIU CHANG-XIN <br/><p>The crystal phase, surface composition, particle shape and thermodynamic chaxacter of Ag ultrafine particle (UFP), which were prepared by sputtering in Ar gas, have been analysed by means of X-ray diffraction, X-ray photo-electron spectrum, transmission electron microscope (TEM) and differential scanning calorimeter. The results show that the particles with size larger than 4.6nm are composed of Ag-nuclens and Ag2O-surface-layer, the particles with size less than 4.6nm consisted of Ag2O only, the shape of particles with size less than 10nm are spherical and that with size larger than l0nm are non-definte when the particle were as-prepared. It is shown by DSC that there are different thermal effect between UFP and solid Ag. Also, it is shown by TEM that a few particles which had two phase of Ag and Ag2O and deposited on the carbon film have been reduced to metal Ag UFP after 40 days.</p> <br/>Acta Physica Sinica. 1994 43(11): 1876-1882. Published 1994-11-20 Author(s): LI JIAN, LIU CUN-YE, LIANG YI-PING, REN HONG-XIANG, DENG ZHAO-JING, LIU CHANG-XIN <br/><p>The crystal phase, surface composition, particle shape and thermodynamic chaxacter of Ag ultrafine particle (UFP), which were prepared by sputtering in Ar gas, have been analysed by means of X-ray diffraction, X-ray photo-electron spectrum, transmission electron microscope (TEM) and differential scanning calorimeter. The results show that the particles with size larger than 4.6nm are composed of Ag-nuclens and Ag2O-surface-layer, the particles with size less than 4.6nm consisted of Ag2O only, the shape of particles with size less than 10nm are spherical and that with size larger than l0nm are non-definte when the particle were as-prepared. It is shown by DSC that there are different thermal effect between UFP and solid Ag. Also, it is shown by TEM that a few particles which had two phase of Ag and Ag2O and deposited on the carbon film have been reduced to metal Ag UFP after 40 days.</p> <br/>Acta Physica Sinica. 1994 43(11): 1876-1882. Published 1994-11-20 ANALYSIS ON Ag/Ag2O ULTRAFINE PARTICLE PREPARED BY SPUTTERING LI JIAN, LIU CUN-YE, LIANG YI-PING, REN HONG-XIANG, DENG ZHAO-JING, LIU CHANG-XIN 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1876-1882. article doi:10.7498/aps.43.1876 10.7498/aps.43.1876 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1876 1876-1882 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1883 Author(s): HUANG HE, TANG DING-YUAN, TONG FEI-MING, ZHENG GUO-ZHEN <br/><p>Dynamic storage time has been measured for x=0.31 n-type Hg1-xCdxTe metal-insulator semiconductor (MIS) devices over temperature range of 68 to 250K. The theoretical calculations have been made in analysing the mechanisms of dark currents. The results point out that the indirect tunnel current, which involves a thermal transition of an electron from the valence band to a band-gap state followed by tunneling into the conduction band, is the main dark current source, especially in low-temperature (about 77K) high-field regime and will dominate the electrical properties of the MIS devices.</p> <br/>Acta Physica Sinica. 1994 43(11): 1883-1888. Published 1994-11-20 Author(s): HUANG HE, TANG DING-YUAN, TONG FEI-MING, ZHENG GUO-ZHEN <br/><p>Dynamic storage time has been measured for x=0.31 n-type Hg1-xCdxTe metal-insulator semiconductor (MIS) devices over temperature range of 68 to 250K. The theoretical calculations have been made in analysing the mechanisms of dark currents. The results point out that the indirect tunnel current, which involves a thermal transition of an electron from the valence band to a band-gap state followed by tunneling into the conduction band, is the main dark current source, especially in low-temperature (about 77K) high-field regime and will dominate the electrical properties of the MIS devices.</p> <br/>Acta Physica Sinica. 1994 43(11): 1883-1888. Published 1994-11-20 DYNAMIC STORAGE TIME MEASUREMENTS OF N-TYPE Hg1-xCdxTe METAL-INSULATOR-SEMICONDUCTOR DEVICES HUANG HE, TANG DING-YUAN, TONG FEI-MING, ZHENG GUO-ZHEN 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1883-1888. article doi:10.7498/aps.43.1883 10.7498/aps.43.1883 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1883 1883-1888 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1889 Author(s): YU WEI, LI XIAO-WEI, HAN LI, ZHANG LIAN-SHUI, FU GUANG-SHENG <br/><p>The time-resolve optical emission spectroscopy is used to study silane and methane laser plasma. The results show that the different fragments' characteristic lines has the same appearance time but different temporal behaviours when the reactant breaks down. Based on the experimental results of dissociation processes it is suggested that the producing of Si and C atoms is the main dissociation channels of the reaction.</p> <br/>Acta Physica Sinica. 1994 43(11): 1889-1898. Published 1994-11-20 Author(s): YU WEI, LI XIAO-WEI, HAN LI, ZHANG LIAN-SHUI, FU GUANG-SHENG <br/><p>The time-resolve optical emission spectroscopy is used to study silane and methane laser plasma. The results show that the different fragments' characteristic lines has the same appearance time but different temporal behaviours when the reactant breaks down. Based on the experimental results of dissociation processes it is suggested that the producing of Si and C atoms is the main dissociation channels of the reaction.</p> <br/>Acta Physica Sinica. 1994 43(11): 1889-1898. Published 1994-11-20 A STUDY ON DISSOCIATION KINETICS OF SiH4+CH4 PLASMA INDUCED BY PULSED INFRARED LASER YU WEI, LI XIAO-WEI, HAN LI, ZHANG LIAN-SHUI, FU GUANG-SHENG 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1889-1898. article doi:10.7498/aps.43.1889 10.7498/aps.43.1889 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1889 1889-1898 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1899 Author(s): JING JI-LIANG, YU HONG-WEI, WANG YONG-JIU, TANG ZHI-MING <br/><p>Coupled SU(5) Einstein-Yang-Mills-Higgs system is studied. A family of static spherical symmetric dyon soiutions and the space-time metrics of the Reissner-Nord-strom type are obtained. The solutions represent static dyon black holes with ma gnetic charge ±3/2e.</p> <br/>Acta Physica Sinica. 1994 43(11): 1899-1906. Published 1994-11-20 Author(s): JING JI-LIANG, YU HONG-WEI, WANG YONG-JIU, TANG ZHI-MING <br/><p>Coupled SU(5) Einstein-Yang-Mills-Higgs system is studied. A family of static spherical symmetric dyon soiutions and the space-time metrics of the Reissner-Nord-strom type are obtained. The solutions represent static dyon black holes with ma gnetic charge ±3/2e.</p> <br/>Acta Physica Sinica. 1994 43(11): 1899-1906. Published 1994-11-20 STATIC DYON BLACK HOLE FOR COUPLED SU(5) EYMH SYSTEM JING JI-LIANG, YU HONG-WEI, WANG YONG-JIU, TANG ZHI-MING 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1899-1906. article doi:10.7498/aps.43.1899 10.7498/aps.43.1899 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1899 1899-1906 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1907 Author(s): XIAO XING-GUO, LIU LIAO <br/><p>In this paper, we give an Euclidean wormhole solution in the vacuum Brans-Dicke theory, which is different from that obtained by Accetta et al. We show that this wormhole unlike all the others, it's throat dimension increases linearly with the increasing of the Euclidean cosmic time.</p> <br/>Acta Physica Sinica. 1994 43(11): 1907-1912. Published 1994-11-20 Author(s): XIAO XING-GUO, LIU LIAO <br/><p>In this paper, we give an Euclidean wormhole solution in the vacuum Brans-Dicke theory, which is different from that obtained by Accetta et al. We show that this wormhole unlike all the others, it's throat dimension increases linearly with the increasing of the Euclidean cosmic time.</p> <br/>Acta Physica Sinica. 1994 43(11): 1907-1912. Published 1994-11-20 WORMHOLE SOLUTION IN VACUUM REAL BRANS-DICKE THEORY XIAO XING-GUO, LIU LIAO 1994-11-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1994 43(11): 1907-1912. article doi:10.7498/aps.43.1907 10.7498/aps.43.1907 Acta Physica Sinica 43 11 1994-11-20 //m.getgobooth.com/en/article/doi/10.7498/aps.43.1907 1907-1912