//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.35.1115 Author(s): Zhao Yong, Huo Yu-ping <br/><p>In this paper, the necessary and sufficient conditions of a system with delayed feedback have been derived. In order to study the bifurcation and chaotic behavior, an asymptotic expansion of the solution in terms of the inverse delay time (TR-1) has been obtained. In long delay time limit, the first order effect in TR-1 is to prolong period of the motion. More interesting phenomena are about the higher order terms. The TR-2 terms lead to some hysteresis processes (some bistability) at each bifurcation point. And the third approximation in TR-1 influences the period-doubling bifurcation, i.e. the ratio of the periods below and at the transition point is not exact two. It is also shown that, some instable windows appear at merging points of the chaotic bands and lead to some mode-locked phenomena.</p> <br/>Acta Physica Sinica. 1986 35(9): 1115-1125. Published 2005-07-14 Author(s): Zhao Yong, Huo Yu-ping <br/><p>In this paper, the necessary and sufficient conditions of a system with delayed feedback have been derived. In order to study the bifurcation and chaotic behavior, an asymptotic expansion of the solution in terms of the inverse delay time (TR-1) has been obtained. In long delay time limit, the first order effect in TR-1 is to prolong period of the motion. More interesting phenomena are about the higher order terms. The TR-2 terms lead to some hysteresis processes (some bistability) at each bifurcation point. And the third approximation in TR-1 influences the period-doubling bifurcation, i.e. the ratio of the periods below and at the transition point is not exact two. It is also shown that, some instable windows appear at merging points of the chaotic bands and lead to some mode-locked phenomena.</p> <br/>Acta Physica Sinica. 1986 35(9): 1115-1125. Published 2005-07-14 DYNAMICAL BEHAVIOR OF A SYSTEM WITH DELAYED FEEDBACK Zhao Yong, Huo Yu-ping 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1115-1125. article doi:10.7498/aps.35.1115 10.7498/aps.35.1115 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1115 1115-1125 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1126 Author(s): Shen Zhong-qing, Zheng Shao-bai, WANG LONG <br/><p>A stable region experiment of feedback control in CT-6B Tokamak has been can-ducted. Two feedback systems have been used simultaneously to control the heating field and the vertical magnetic field in the Tokamak. The experimental results were compared with the linear theory described in the part (I) of our paper. We found that the experimental stable regions is somewhat small than that predicted by the linear feedback theory.</p> <br/>Acta Physica Sinica. 1986 35(9): 1126-1133. Published 2005-07-14 Author(s): Shen Zhong-qing, Zheng Shao-bai, WANG LONG <br/><p>A stable region experiment of feedback control in CT-6B Tokamak has been can-ducted. Two feedback systems have been used simultaneously to control the heating field and the vertical magnetic field in the Tokamak. The experimental results were compared with the linear theory described in the part (I) of our paper. We found that the experimental stable regions is somewhat small than that predicted by the linear feedback theory.</p> <br/>Acta Physica Sinica. 1986 35(9): 1126-1133. Published 2005-07-14 STABLE REGION OF TOKAMAK DEVICE FEEDBACK CONTROL (Ⅱ)——EXPBEIMENTAL Shen Zhong-qing, Zheng Shao-bai, WANG LONG 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1126-1133. article doi:10.7498/aps.35.1126 10.7498/aps.35.1126 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1126 1126-1133 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1134 Author(s): Zheng Qi-tai <br/><p>Some trial and error procedures are often used in the proceeds of structure determination. The present paper provides some procedures to determine phase of structure factor and to build molecular model (selecting E value and starting set, determining atomic kind and occupancy). Many unknown structures have been solved succes-fully by means of these procedures.</p> <br/>Acta Physica Sinica. 1986 35(9): 1134-1141. Published 2005-07-14 Author(s): Zheng Qi-tai <br/><p>Some trial and error procedures are often used in the proceeds of structure determination. The present paper provides some procedures to determine phase of structure factor and to build molecular model (selecting E value and starting set, determining atomic kind and occupancy). Many unknown structures have been solved succes-fully by means of these procedures.</p> <br/>Acta Physica Sinica. 1986 35(9): 1134-1141. Published 2005-07-14 THE TRIAL AND ERROR PROCEDURES IN THE DIRECT METHOD (Ⅱ) Zheng Qi-tai 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1134-1141. article doi:10.7498/aps.35.1134 10.7498/aps.35.1134 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1134 1134-1141 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1142 Author(s): Yang Gui-ling, Xu You, Lu De-ling, Zhai Hong-ru <br/><p>The experimental data of CFP B40 of rare earth ions in RX compounds is analyzed. On this basis, we propose a new relation, through which the CPP B40 values in RX compounds can be calculated by the simple point charge model, namely, B40=k3(B40)p + c3 The CFP B40 values in a lot of RX compouuds were determinded by this relation. Results are in good agreement with experimental values. Finally, the meaning of the relation are discussed.</p> <br/>Acta Physica Sinica. 1986 35(9): 1142-1147. Published 2005-07-14 Author(s): Yang Gui-ling, Xu You, Lu De-ling, Zhai Hong-ru <br/><p>The experimental data of CFP B40 of rare earth ions in RX compounds is analyzed. On this basis, we propose a new relation, through which the CPP B40 values in RX compounds can be calculated by the simple point charge model, namely, B40=k3(B40)p + c3 The CFP B40 values in a lot of RX compouuds were determinded by this relation. Results are in good agreement with experimental values. Finally, the meaning of the relation are discussed.</p> <br/>Acta Physica Sinica. 1986 35(9): 1142-1147. Published 2005-07-14 ANALYSIS ON CRYSTAL FIELD PARAMETER OF RARE EARTH IONS IN RX COMPOUNDS Yang Gui-ling, Xu You, Lu De-ling, Zhai Hong-ru 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1142-1147. article doi:10.7498/aps.35.1142 10.7498/aps.35.1142 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1142 1142-1147 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1148 Author(s): Zheng Li-xing, Ruan Yong-feng, Guo Shao-zhang, Wan Liang-feng, Li Hao <br/><p>In this paper, we describe systematically some experimental results of the optical characters of the creaion of F3+ centers in LiF crystal by electron bombardment under different conditions. The relative density between F3+ and F2 centers are analysed from fluorescence spectra. The experimental results show that irradiation temperature plays an important role in the creation of F3+ and F2 centers and affects the relative density of F3+ and F2 centers. The main results are as follows: (1) Irradiation at liquid nitrogen temperature and then warming up to room temperature in the dark can create F3+ canters with high density, which can be seen from the fluoreseence spectra, as fluorescence of F3+ centers centered at 530 nm is much stronger than that of F2 center (670 nm) and fewer N centers and R centers are presented in absortion spectra. (2) From dynamic fluorescence spectra, it can be shown that in the samples irradiated at liquid nitrogen temperature, the density of F3+ centers increase rapidly when F2+ centers decays. But in the samples irradiated at room temperature the growth of F3+ and F2 centers are approximatly with the came rate. (3) We observd the band width and double pike structure of the fluorescence excitation spectra of F3+ and F2 centers.</p> <br/>Acta Physica Sinica. 1986 35(9): 1148-1157. Published 2005-07-14 Author(s): Zheng Li-xing, Ruan Yong-feng, Guo Shao-zhang, Wan Liang-feng, Li Hao <br/><p>In this paper, we describe systematically some experimental results of the optical characters of the creaion of F3+ centers in LiF crystal by electron bombardment under different conditions. The relative density between F3+ and F2 centers are analysed from fluorescence spectra. The experimental results show that irradiation temperature plays an important role in the creation of F3+ and F2 centers and affects the relative density of F3+ and F2 centers. The main results are as follows: (1) Irradiation at liquid nitrogen temperature and then warming up to room temperature in the dark can create F3+ canters with high density, which can be seen from the fluoreseence spectra, as fluorescence of F3+ centers centered at 530 nm is much stronger than that of F2 center (670 nm) and fewer N centers and R centers are presented in absortion spectra. (2) From dynamic fluorescence spectra, it can be shown that in the samples irradiated at liquid nitrogen temperature, the density of F3+ centers increase rapidly when F2+ centers decays. But in the samples irradiated at room temperature the growth of F3+ and F2 centers are approximatly with the came rate. (3) We observd the band width and double pike structure of the fluorescence excitation spectra of F3+ and F2 centers.</p> <br/>Acta Physica Sinica. 1986 35(9): 1148-1157. Published 2005-07-14 EXPERIMENTAL STUDIES OF F3+ COLOR CENTERS IN LiF CRYSTAL Zheng Li-xing, Ruan Yong-feng, Guo Shao-zhang, Wan Liang-feng, Li Hao 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1148-1157. article doi:10.7498/aps.35.1148 10.7498/aps.35.1148 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1148 1148-1157 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1158 Author(s): Zhao Zong-yuan, Chen Li-quan <br/><p>DC and ac conductivities of AgI(α-Fe2O3) composite electrolytes have been measured. It is found that the Morin transition temperature of α-Fe2O3 is dereased by the addition of AgI. The results of M?ssbauer spectra and susceptibility are qualitatively coincide with electrical measurement. Phase transition temperature of AgI from α to βphase is also significantly lowered by the existance of α-Fe2O3. The experiments have been shown that phase transition temperature of the two phases in composite electrolyte were influenced each other.</p> <br/>Acta Physica Sinica. 1986 35(9): 1158-1163. Published 2005-07-14 Author(s): Zhao Zong-yuan, Chen Li-quan <br/><p>DC and ac conductivities of AgI(α-Fe2O3) composite electrolytes have been measured. It is found that the Morin transition temperature of α-Fe2O3 is dereased by the addition of AgI. The results of M?ssbauer spectra and susceptibility are qualitatively coincide with electrical measurement. Phase transition temperature of AgI from α to βphase is also significantly lowered by the existance of α-Fe2O3. The experiments have been shown that phase transition temperature of the two phases in composite electrolyte were influenced each other.</p> <br/>Acta Physica Sinica. 1986 35(9): 1158-1163. Published 2005-07-14 MUTUAL EFFECT ON PHASE TRANSITION TEMPERATURES OF TWO PHASES IN AgI(α-Fe2O3) COMPOSITION ELECTROLYTES Zhao Zong-yuan, Chen Li-quan 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1158-1163. article doi:10.7498/aps.35.1158 10.7498/aps.35.1158 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1158 1158-1163 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1164 Author(s): Wang Wen-cai, Ge Sen-lin, Chen Yu <br/><p>The EXAFS of amorphous semiconductor a-As2Se3, a-AsSe, a-As0.05 Se0.95 and a-As2Se3) after annealing at different temperatures lower than Tg are measured by 12 kW rotating anode X-ray diffraction equipment. Analyses of the determined radial structural functions shows that although the short range structure of a-As2Se3 is very similar to that for crystalline As2Se3, some changes take place in its radial structural function after annealing. The structural relaxation in a-As2Se3, quenched from melt, has also been observed. The short range structures for different components of As in binary As-Se system seem to be different.</p> <br/>Acta Physica Sinica. 1986 35(9): 1164-1171. Published 2005-07-14 Author(s): Wang Wen-cai, Ge Sen-lin, Chen Yu <br/><p>The EXAFS of amorphous semiconductor a-As2Se3, a-AsSe, a-As0.05 Se0.95 and a-As2Se3) after annealing at different temperatures lower than Tg are measured by 12 kW rotating anode X-ray diffraction equipment. Analyses of the determined radial structural functions shows that although the short range structure of a-As2Se3 is very similar to that for crystalline As2Se3, some changes take place in its radial structural function after annealing. The structural relaxation in a-As2Se3, quenched from melt, has also been observed. The short range structures for different components of As in binary As-Se system seem to be different.</p> <br/>Acta Physica Sinica. 1986 35(9): 1164-1171. Published 2005-07-14 STUDY ON THE SHORT RANGE STRUCTURES OF BINARY AMORPHOUS ARSENIC-SELENIUM SYSTEM BY EXAFS Wang Wen-cai, Ge Sen-lin, Chen Yu 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1164-1171. article doi:10.7498/aps.35.1164 10.7498/aps.35.1164 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1164 1164-1171 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1172 Author(s): Zhang Tong-yi, Jiang Fang-xing, Chu Wu-yang, Xiao Ji-mei <br/><p>A Bordoni type apparatus was used to measure the relative changes of the apparent Young's modulus and elastic strain of a sustained displacement specimen during aging at room temperature after charging with hydrogen or artificial partial stress relaxation. The Young's modulus was gradully increasing and the elastic strain decreasing during aging after artificial partial stress relaxation. However, the situation was just opposite during aging after charging, i.e., the Young's modulus was gradually decreasing and the elastic strain increasing. It has been proved that the presence of nickel hydride brings about the increase of the Young's modulus of pure nickel due to the change of chemical bond. The decomposition of hydride and escaping of hydrogen atoms from the specimen during aging after charging cause the decrease of the Young's modulus of nickel.</p> <br/>Acta Physica Sinica. 1986 35(9): 1172-1181. Published 2005-07-14 Author(s): Zhang Tong-yi, Jiang Fang-xing, Chu Wu-yang, Xiao Ji-mei <br/><p>A Bordoni type apparatus was used to measure the relative changes of the apparent Young's modulus and elastic strain of a sustained displacement specimen during aging at room temperature after charging with hydrogen or artificial partial stress relaxation. The Young's modulus was gradully increasing and the elastic strain decreasing during aging after artificial partial stress relaxation. However, the situation was just opposite during aging after charging, i.e., the Young's modulus was gradually decreasing and the elastic strain increasing. It has been proved that the presence of nickel hydride brings about the increase of the Young's modulus of pure nickel due to the change of chemical bond. The decomposition of hydride and escaping of hydrogen atoms from the specimen during aging after charging cause the decrease of the Young's modulus of nickel.</p> <br/>Acta Physica Sinica. 1986 35(9): 1172-1181. Published 2005-07-14 EFFECT OF HYDROGEN ON YOUNG'S MODULUS OF NICKEL Zhang Tong-yi, Jiang Fang-xing, Chu Wu-yang, Xiao Ji-mei 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1172-1181. article doi:10.7498/aps.35.1172 10.7498/aps.35.1172 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1172 1172-1181 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1182 Author(s): Gu Mu, Gu Xi-liang, Guo Zhen-di, Hu Yu-de, Qian Jing-hua, Yang Fu-jia <br/><p>The total widths of two excited states at 9603.9 keV, 10321.0 keV and of a doublet at 9864.6, 9868.8 keV in 40Ca have been measured with resonance γ-ray absorption. The gamma radiations from 39K (p, γ) reaction at EP=1307.2 keV, 2042.8 keV and 1595.0 keV have been selected to excite the corresponding levels in 40Ca. The accurate results for the widths of the 9603.9 keV and 10321.0 keV states are obtained for the first time, they are 188±47eV and 91±15eV, respectively. For the 9864.6 and 9868.8 keV states, they are 100±24eV and 899±214 eV. Because the 9864.6 and 9868.8 keV states are close-lying doublet, the resonance γ-ray absorption techniqque was used in a special style: there will be two groups of gamma rays to be used to excite the same two levels, so the cross excitation occurs. We extended the corresponding exper mental analysis. In addition, (p,γ) yield measurenents have been made to extract the level widths of the 9603.9 keV, 10321.0 keV states. And the results are in agreement with the values deduced from resonance γ-ray absorption. The (p, γ) resonance strengths and isospins of the 9603.9 keV and 10321.0 keV states in 40Ca have also been discussed.</p> <br/>Acta Physica Sinica. 1986 35(9): 1182-1191. Published 2005-07-14 Author(s): Gu Mu, Gu Xi-liang, Guo Zhen-di, Hu Yu-de, Qian Jing-hua, Yang Fu-jia <br/><p>The total widths of two excited states at 9603.9 keV, 10321.0 keV and of a doublet at 9864.6, 9868.8 keV in 40Ca have been measured with resonance γ-ray absorption. The gamma radiations from 39K (p, γ) reaction at EP=1307.2 keV, 2042.8 keV and 1595.0 keV have been selected to excite the corresponding levels in 40Ca. The accurate results for the widths of the 9603.9 keV and 10321.0 keV states are obtained for the first time, they are 188±47eV and 91±15eV, respectively. For the 9864.6 and 9868.8 keV states, they are 100±24eV and 899±214 eV. Because the 9864.6 and 9868.8 keV states are close-lying doublet, the resonance γ-ray absorption techniqque was used in a special style: there will be two groups of gamma rays to be used to excite the same two levels, so the cross excitation occurs. We extended the corresponding exper mental analysis. In addition, (p,γ) yield measurenents have been made to extract the level widths of the 9603.9 keV, 10321.0 keV states. And the results are in agreement with the values deduced from resonance γ-ray absorption. The (p, γ) resonance strengths and isospins of the 9603.9 keV and 10321.0 keV states in 40Ca have also been discussed.</p> <br/>Acta Physica Sinica. 1986 35(9): 1182-1191. Published 2005-07-14 MEASUREMENT OF SOME LEVEL-WIDTHS IN 40Ca BETWEEN 9.5 AND 10.5 MEV Gu Mu, Gu Xi-liang, Guo Zhen-di, Hu Yu-de, Qian Jing-hua, Yang Fu-jia 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1182-1191. article doi:10.7498/aps.35.1182 10.7498/aps.35.1182 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1182 1182-1191 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1192 Author(s): Hu Ji-huang, Liu Guo-hui, Wang Xun <br/><p>The chemisorption states of atomic hydrogen on Si (111) surface have been studied by means of thermal desorption spectra. Two desorption peaks β1 and β2 were observed. At low hydrogen exposure only peak β1 could be seen. The peak β2 appeared at higher hydrogen exposure and could not exist if the sample was exposed to hydrogen at a temperature higher than 400℃ or was annealed above 380℃ after hydrogen exposure. The saturated coverage of β2 was less than that of β1 by a factor of 2. The peak β1 is related to the top site adsorption of H on surface Si atoms as reported by previous works. The relatively high activation energy of desorption for β2 implies that its adsorption state is likely to be a chemical, bonding state instead of a non-bonding state as postulated by Schulze and Hender. All the above desorption behaviors of β1 and β2 are quite similar to those of monohydride phase and dihydride phase of H on Si (100) surface. Therefore, it is reasonable to deduce that the β1 and β2 states correspond to the monohydride and dihydride phase on Si (111) respectively. A triangle dimer stacking fault model of Si (111) (7×7) reconstruction proposed by McRae could be used to give an exp-laination of forming surface silicon dimer bond and thus the dihydride phase on clean Si (111) surface.</p> <br/>Acta Physica Sinica. 1986 35(9): 1192-1198. Published 2005-07-14 Author(s): Hu Ji-huang, Liu Guo-hui, Wang Xun <br/><p>The chemisorption states of atomic hydrogen on Si (111) surface have been studied by means of thermal desorption spectra. Two desorption peaks β1 and β2 were observed. At low hydrogen exposure only peak β1 could be seen. The peak β2 appeared at higher hydrogen exposure and could not exist if the sample was exposed to hydrogen at a temperature higher than 400℃ or was annealed above 380℃ after hydrogen exposure. The saturated coverage of β2 was less than that of β1 by a factor of 2. The peak β1 is related to the top site adsorption of H on surface Si atoms as reported by previous works. The relatively high activation energy of desorption for β2 implies that its adsorption state is likely to be a chemical, bonding state instead of a non-bonding state as postulated by Schulze and Hender. All the above desorption behaviors of β1 and β2 are quite similar to those of monohydride phase and dihydride phase of H on Si (100) surface. Therefore, it is reasonable to deduce that the β1 and β2 states correspond to the monohydride and dihydride phase on Si (111) respectively. A triangle dimer stacking fault model of Si (111) (7×7) reconstruction proposed by McRae could be used to give an exp-laination of forming surface silicon dimer bond and thus the dihydride phase on clean Si (111) surface.</p> <br/>Acta Physica Sinica. 1986 35(9): 1192-1198. Published 2005-07-14 A STUDY ABOUT THE EXISTENCE OF DIHYDRIDE PHASE ON HYDROGEN CHEMISORBED Si(111) SURFACE Hu Ji-huang, Liu Guo-hui, Wang Xun 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1192-1198. article doi:10.7498/aps.35.1192 10.7498/aps.35.1192 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1192 1192-1198 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1199 Author(s): Ai Ke-cong, Zhou Li-wei, Ximen Ji-ye <br/><p>In the present study, an aberration theory for both wide and narrow electron beams in a combined electromagnetic focusing spherical cathode lens system is discussed. The general formulae of aberration coefficients for first and third order transversal geometrical and chromatic aberrations on any ideal image plane have been derived under following conditions, i.e., when the objective and image fields have finite curvatures and when the cathode is immersed in magnetic and transversal electric fields. Based on the variational analysis method and the trajectory calculation method, the relationship between the wide electron beam slstem and the narrow electron beam system has been considered in detail. It has been shown that these two different electron beam systems can be treated equally and their aberration equations and coefficients can be expressed in a universal form, if one considers the definite energy and angular initial distributions and utilizes the first order linear trajectory equation. In the present paper, electron frajectories are described in the vector form. The aberrations are expressed in the matrix form and are thus appropariate for computer calculations.</p> <br/>Acta Physica Sinica. 1986 35(9): 1199-1209. Published 2005-07-14 Author(s): Ai Ke-cong, Zhou Li-wei, Ximen Ji-ye <br/><p>In the present study, an aberration theory for both wide and narrow electron beams in a combined electromagnetic focusing spherical cathode lens system is discussed. The general formulae of aberration coefficients for first and third order transversal geometrical and chromatic aberrations on any ideal image plane have been derived under following conditions, i.e., when the objective and image fields have finite curvatures and when the cathode is immersed in magnetic and transversal electric fields. Based on the variational analysis method and the trajectory calculation method, the relationship between the wide electron beam slstem and the narrow electron beam system has been considered in detail. It has been shown that these two different electron beam systems can be treated equally and their aberration equations and coefficients can be expressed in a universal form, if one considers the definite energy and angular initial distributions and utilizes the first order linear trajectory equation. In the present paper, electron frajectories are described in the vector form. The aberrations are expressed in the matrix form and are thus appropariate for computer calculations.</p> <br/>Acta Physica Sinica. 1986 35(9): 1199-1209. Published 2005-07-14 ON THE ABERRATION THEORY FOR WIDE AND NARROW ELECTRON BEAMS IN A COMBINED ELECTROMAGNETIC FOCUSING SPHERICAL CATHODE LENS SYSTEM Ai Ke-cong, Zhou Li-wei, Ximen Ji-ye 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1199-1209. article doi:10.7498/aps.35.1199 10.7498/aps.35.1199 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1199 1199-1209 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1210 Author(s): Ai Ke-cong, Ximen Ji-ye, Zhou Li-wei <br/><p>In the present paper, by means of the variational principle, the relativistic aberration theory for a combined electromagnetic foeusing-deflection system possessing a spherical cathode lens is studied. We have discussed the following general cases: electrons emitted from the cathode possess definite energy and angular initial distributions; the objective and image fields have finite curvatures; the cathode is situated in both magnetic and transversal electric fields. For these general cases the general formulae of aberration coefficients for first and third order transversal geometrical and chromatic aberrations on any ideal image plane are given in explicit form. The above-mentioned aberration coefficient formulae can be applied to the following eases: either the wide electron beam system or the narrow electron beam.system; either the relativistic or the non-relativistic electron optical system; either the cathode or the screen having the spherical or the planar shapes. In the present work, the electron trajectories are described in the complex form. The aberrations are expressed in the matrix form, and are thus suitable for computer computations.</p> <br/>Acta Physica Sinica. 1986 35(9): 1210-1222. Published 2005-07-14 Author(s): Ai Ke-cong, Ximen Ji-ye, Zhou Li-wei <br/><p>In the present paper, by means of the variational principle, the relativistic aberration theory for a combined electromagnetic foeusing-deflection system possessing a spherical cathode lens is studied. We have discussed the following general cases: electrons emitted from the cathode possess definite energy and angular initial distributions; the objective and image fields have finite curvatures; the cathode is situated in both magnetic and transversal electric fields. For these general cases the general formulae of aberration coefficients for first and third order transversal geometrical and chromatic aberrations on any ideal image plane are given in explicit form. The above-mentioned aberration coefficient formulae can be applied to the following eases: either the wide electron beam system or the narrow electron beam.system; either the relativistic or the non-relativistic electron optical system; either the cathode or the screen having the spherical or the planar shapes. In the present work, the electron trajectories are described in the complex form. The aberrations are expressed in the matrix form, and are thus suitable for computer computations.</p> <br/>Acta Physica Sinica. 1986 35(9): 1210-1222. Published 2005-07-14 RELATIVISTIC ABERRATION THEORY FOR A COMBINED ELECTROMAGNETIC FOCUSING-DEFLECTION SYSTEM POSSESSING A SPHERICAL CATHODE LENS Ai Ke-cong, Ximen Ji-ye, Zhou Li-wei 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1210-1222. article doi:10.7498/aps.35.1210 10.7498/aps.35.1210 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1210 1210-1222 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1223 Author(s): Du You-wei, Lu Huai-xian, Wang Ting-xiang, Xue Rong-hua, Cheng Liang, Hu Hong-quan <br/><p>The particles of Zn0.2Fe2.8O4, ferrite are prepared by chemical Co-precipitation. The shape of particles are nearly spherical and their mean diameter is about 300?. Epitaxial cobalt ferrite layer is coated on their surface. Coercivity Hc and ferromagnetic resonance line width △H are measured. According to, experimental results, the effective mangnetic anisotropy constant Ku is about 5×105 erg/cm2. That is induced by interface interaction between the inner core of Zn0.2Fe2.8O4 and Co-Fe epitaxial layer. The distance of interaction is about the total thickness of two oxygen ion layers.</p> <br/>Acta Physica Sinica. 1986 35(9): 1223-1226. Published 2005-07-14 Author(s): Du You-wei, Lu Huai-xian, Wang Ting-xiang, Xue Rong-hua, Cheng Liang, Hu Hong-quan <br/><p>The particles of Zn0.2Fe2.8O4, ferrite are prepared by chemical Co-precipitation. The shape of particles are nearly spherical and their mean diameter is about 300?. Epitaxial cobalt ferrite layer is coated on their surface. Coercivity Hc and ferromagnetic resonance line width △H are measured. According to, experimental results, the effective mangnetic anisotropy constant Ku is about 5×105 erg/cm2. That is induced by interface interaction between the inner core of Zn0.2Fe2.8O4 and Co-Fe epitaxial layer. The distance of interaction is about the total thickness of two oxygen ion layers.</p> <br/>Acta Physica Sinica. 1986 35(9): 1223-1226. Published 2005-07-14 MECHANISM OF HIGHLY COERCIVITY ON EPITAXIAL Co-FERRITES Du You-wei, Lu Huai-xian, Wang Ting-xiang, Xue Rong-hua, Cheng Liang, Hu Hong-quan 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1223-1226. article doi:10.7498/aps.35.1223 10.7498/aps.35.1223 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1223 1223-1226 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1227 Author(s): Wang Mao-quan <br/><p>In this article, the activities of tearing modes was analyzed when the plasma in Tokamak has a flowing velocity. The analysis and numerical calculation indicate, the total flowing of the plasma (equiylent to a. plasma with a rotational frequency) does not influence the activities of tearing modes, only causes the rotation of the magnetic island with a frequency equal to the rotational frequency, of the plasma, The applied helical magnetic field can suppress the rotation of the plasma effectively in the tearing layer. The role of stabilization of the helical magnetic field on the tearing modes is not affected by the plasma rotation.</p> <br/>Acta Physica Sinica. 1986 35(9): 1227-1232. Published 2005-07-14 Author(s): Wang Mao-quan <br/><p>In this article, the activities of tearing modes was analyzed when the plasma in Tokamak has a flowing velocity. The analysis and numerical calculation indicate, the total flowing of the plasma (equiylent to a. plasma with a rotational frequency) does not influence the activities of tearing modes, only causes the rotation of the magnetic island with a frequency equal to the rotational frequency, of the plasma, The applied helical magnetic field can suppress the rotation of the plasma effectively in the tearing layer. The role of stabilization of the helical magnetic field on the tearing modes is not affected by the plasma rotation.</p> <br/>Acta Physica Sinica. 1986 35(9): 1227-1232. Published 2005-07-14 THE EFFECT OF FLOWING PLASMA IN TOKAMAK ON TEARTING MODES Wang Mao-quan 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1227-1232. article doi:10.7498/aps.35.1227 10.7498/aps.35.1227 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1227 1227-1232 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1233 Author(s): Wang Mao-quan, Zhan Ru-juan <br/><p>Using the localization of electron cyclotron resonance heating, the profile of plasma current is improved so that the conditions of stabilities of tearing modes are also improved. As long as the absorbed region of electron cyclotron resonance heating covers the resonance layer of tearing modes, the effect of stabilizinl is very good. It is not necessary to require that electron cyclotron resonance surface must coincide with that of tearing mode strictly. In the period of electron cyclotron heating, the tearing mode is suppressed effectively.</p> <br/>Acta Physica Sinica. 1986 35(9): 1233-1237. Published 2005-07-14 Author(s): Wang Mao-quan, Zhan Ru-juan <br/><p>Using the localization of electron cyclotron resonance heating, the profile of plasma current is improved so that the conditions of stabilities of tearing modes are also improved. As long as the absorbed region of electron cyclotron resonance heating covers the resonance layer of tearing modes, the effect of stabilizinl is very good. It is not necessary to require that electron cyclotron resonance surface must coincide with that of tearing mode strictly. In the period of electron cyclotron heating, the tearing mode is suppressed effectively.</p> <br/>Acta Physica Sinica. 1986 35(9): 1233-1237. Published 2005-07-14 SUPPRESSING THE TEARING MODES IN TOKAMAK BY ELECTRON CYCLOTRON RESONANCE HEATING Wang Mao-quan, Zhan Ru-juan 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1233-1237. article doi:10.7498/aps.35.1233 10.7498/aps.35.1233 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1233 1233-1237 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1238 Author(s): Yu Wen-hai, Yang Yuan <br/><p>We found that, in the isothermal treatment process of the amorphous Li+ conductor B2O3-0.7 Li2O-0.7 LiCl-0.1 Al2O3, the plot of the conductivity vesus time rises at first, then, after passing a maxium falls monotonically, and followed by two flat sections. It has been established that these phenomena are due to the phase sparation and crystallization of this amorphous material. In this work, we develop a view point of interface effect between different phases, i.e. we consider that there is a high conductivity layer at the interface between different phases and its contribution compensates or exceeds the decrease of conductivity caused by the bulk effect, of the crystallization. On the basis of this interface effect, an explanation about the above-mentioned experimental plot is given.</p> <br/>Acta Physica Sinica. 1986 35(9): 1238-1242. Published 2005-07-14 Author(s): Yu Wen-hai, Yang Yuan <br/><p>We found that, in the isothermal treatment process of the amorphous Li+ conductor B2O3-0.7 Li2O-0.7 LiCl-0.1 Al2O3, the plot of the conductivity vesus time rises at first, then, after passing a maxium falls monotonically, and followed by two flat sections. It has been established that these phenomena are due to the phase sparation and crystallization of this amorphous material. In this work, we develop a view point of interface effect between different phases, i.e. we consider that there is a high conductivity layer at the interface between different phases and its contribution compensates or exceeds the decrease of conductivity caused by the bulk effect, of the crystallization. On the basis of this interface effect, an explanation about the above-mentioned experimental plot is given.</p> <br/>Acta Physica Sinica. 1986 35(9): 1238-1242. Published 2005-07-14 INTERFACE EFFECT PETWEEN DIFFERENT PHASES IN THE PROCESS OF PHASE SEPARATION AND CRYSTALLIZATION OF AN AMORPHOUS Li+ CONDUCTOR Yu Wen-hai, Yang Yuan 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1238-1242. article doi:10.7498/aps.35.1238 10.7498/aps.35.1238 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1238 1238-1242 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1243 Author(s): Feng Shi-ping <br/><p>We have discussed the superconductivity in itinerant ferromagnets for P-wave superconductors. Result shows that the ferromagntic superconductor can be formed for some special parameter's at some temperature.</p> <br/>Acta Physica Sinica. 1986 35(9): 1243-1247. Published 2005-07-14 Author(s): Feng Shi-ping <br/><p>We have discussed the superconductivity in itinerant ferromagnets for P-wave superconductors. Result shows that the ferromagntic superconductor can be formed for some special parameter's at some temperature.</p> <br/>Acta Physica Sinica. 1986 35(9): 1243-1247. Published 2005-07-14 THEORETICAL INVESTIGATION OF HEAVY FERMION SUPERCONDUCTIVITY IN ITINERANT FERROMAGNETS Feng Shi-ping 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1243-1247. article doi:10.7498/aps.35.1243 10.7498/aps.35.1243 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1243 1243-1247 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1248 Author(s): Dong Shao-jing <br/><p>The heavy quark-antiquark force and potential are calculated by means of Monte Carlo method in 4 dimensional symmetry lattice gauge theory for a single plaquette EXP action which has a good scaling behaviour. The renormalization group treatment and the icosahedral subgroup approximation to SU(2) are used. The resultes agreet with Coulomb plus linear form obtained from phenomenological string theories.</p> <br/>Acta Physica Sinica. 1986 35(9): 1248-1252. Published 2005-07-14 Author(s): Dong Shao-jing <br/><p>The heavy quark-antiquark force and potential are calculated by means of Monte Carlo method in 4 dimensional symmetry lattice gauge theory for a single plaquette EXP action which has a good scaling behaviour. The renormalization group treatment and the icosahedral subgroup approximation to SU(2) are used. The resultes agreet with Coulomb plus linear form obtained from phenomenological string theories.</p> <br/>Acta Physica Sinica. 1986 35(9): 1248-1252. Published 2005-07-14 THE CALCULATION OF HEAVY QUARK FORCE AND POTENTIAL IN SU(2) LATTICE GAUGE THEORY Dong Shao-jing 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1248-1252. article doi:10.7498/aps.35.1248 10.7498/aps.35.1248 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1248 1248-1252 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1253 Author(s): Zhang Fang-qing, Xu Xi-xiang, Chen Guang-hua, Jiang Zhi-chen, Chen Zhen-shi, Qi Shang-kui <br/><p>We studied the valence-band (VB) spectra of hydfogenated amorphous silieon-earbon alloy film (a-Si C:H:) by means of UPS technique and analysed the influence of doping and surface oxidation on VB spectra. Accompanied with XPS and AES analysis, we preliminarily investigated the distribution and bonding property of valence electrons in the alloy films.</p> <br/>Acta Physica Sinica. 1986 35(9): 1253-1258. Published 2005-07-14 Author(s): Zhang Fang-qing, Xu Xi-xiang, Chen Guang-hua, Jiang Zhi-chen, Chen Zhen-shi, Qi Shang-kui <br/><p>We studied the valence-band (VB) spectra of hydfogenated amorphous silieon-earbon alloy film (a-Si C:H:) by means of UPS technique and analysed the influence of doping and surface oxidation on VB spectra. Accompanied with XPS and AES analysis, we preliminarily investigated the distribution and bonding property of valence electrons in the alloy films.</p> <br/>Acta Physica Sinica. 1986 35(9): 1253-1258. Published 2005-07-14 STUDY OF VALENCE-BAND PROPERTIES IN a-Si1-xCx:H BY UV PHOTO-ELECTRON SPECTROSOPY Zhang Fang-qing, Xu Xi-xiang, Chen Guang-hua, Jiang Zhi-chen, Chen Zhen-shi, Qi Shang-kui 2005-07-14 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1986 35(9): 1253-1258. article doi:10.7498/aps.35.1253 10.7498/aps.35.1253 Acta Physica Sinica 35 9 2005-07-14 //www.getgobooth.com/en/article/doi/10.7498/aps.35.1253 1253-1258

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