//www.getgobooth.com/ 必威体育下载 daily 15 2024-09-05 15:36:23 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-09-05 15:36:23 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.32.145 Author(s): DING SHOU-QIAN <br/><p>This paper deals with the generalization of the theory of third order aberrations of an electrical deflection system under the situation as the electron beam is originally immersed in an electric field. The formulae of third order electrical deflection aberration coefficients in an arbitrary plane have been derived. It can be applied to either sequential deflection systems or superimposed deflection yokes. By means of mathematical manoeuvres, the formulae are simplified and made easy for calculation. In order to obtain high precision, the first and second order derivatives of the field E0(z) have been eliminated. In accordance with our previous work, the nomenclature and calculating procedure are kept the same as before, so we can adopt the same computing scheme.Finally, we have described the relations between the patterns of the raster distortion, astigmatism, field curvature, coma, and the corresponding deflection aberration coefficients for a small electron beam which is initially point-focused on the image screen. These relations may also be applied to the third order magnetic deflection aberrations.</p> <br/>Acta Physica Sinica. 1983 32(2): 145-155. Published 1983-01-05 Author(s): DING SHOU-QIAN <br/><p>This paper deals with the generalization of the theory of third order aberrations of an electrical deflection system under the situation as the electron beam is originally immersed in an electric field. The formulae of third order electrical deflection aberration coefficients in an arbitrary plane have been derived. It can be applied to either sequential deflection systems or superimposed deflection yokes. By means of mathematical manoeuvres, the formulae are simplified and made easy for calculation. In order to obtain high precision, the first and second order derivatives of the field E0(z) have been eliminated. In accordance with our previous work, the nomenclature and calculating procedure are kept the same as before, so we can adopt the same computing scheme.Finally, we have described the relations between the patterns of the raster distortion, astigmatism, field curvature, coma, and the corresponding deflection aberration coefficients for a small electron beam which is initially point-focused on the image screen. These relations may also be applied to the third order magnetic deflection aberrations.</p> <br/>Acta Physica Sinica. 1983 32(2): 145-155. Published 1983-01-05 A GENERALIZED FORMULA OF THE THIRD ORDER ELECTRICAL DEFLECTION ABERRATION COEFFICIENTS AND THEIR RELATION WITH THE RASTER PATTERN DING SHOU-QIAN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 145-155. article doi:10.7498/aps.32.145 10.7498/aps.32.145 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.145 145-155 //www.getgobooth.com/en/article/doi/10.7498/aps.32.156 Author(s): WANG ZOU-QING, ZHOU SU-HUA, WANG CHENG-HAO <br/><p>The surface acoustic wave diffraction phenomena on acoustic gratings in Bragg regime have been explored.The modal approach has been used to treat this problem under strong Bragg condition. Some results, including the eigen-modes in the grating, the equation of the deflected angles, and the analytical expression of deflection efficiency which depends on the operation frequency and the grating parameters, have been obtained.Experimentally, the image of the diffraction acoustic fields on acoustic grating which was composed of some aluminium film stripes on y-cut LiNbO3 crystals have been visualized by means of Schlieren method. Some excellent photographs of diffraction fields have been obtained, and the deflection angles and deflection efficiency at different frequency have been measured by using optical method. The comparison between the theoretical and the experimental results shows that the agreement is satisfactory.</p> <br/>Acta Physica Sinica. 1983 32(2): 156-167. Published 1983-01-05 Author(s): WANG ZOU-QING, ZHOU SU-HUA, WANG CHENG-HAO <br/><p>The surface acoustic wave diffraction phenomena on acoustic gratings in Bragg regime have been explored.The modal approach has been used to treat this problem under strong Bragg condition. Some results, including the eigen-modes in the grating, the equation of the deflected angles, and the analytical expression of deflection efficiency which depends on the operation frequency and the grating parameters, have been obtained.Experimentally, the image of the diffraction acoustic fields on acoustic grating which was composed of some aluminium film stripes on y-cut LiNbO3 crystals have been visualized by means of Schlieren method. Some excellent photographs of diffraction fields have been obtained, and the deflection angles and deflection efficiency at different frequency have been measured by using optical method. The comparison between the theoretical and the experimental results shows that the agreement is satisfactory.</p> <br/>Acta Physica Sinica. 1983 32(2): 156-167. Published 1983-01-05 ON THE BRAGG-DIFFRACTION OF SURFACE ACOUSTIC WAVES BY ACOUSTIC GRATING WANG ZOU-QING, ZHOU SU-HUA, WANG CHENG-HAO 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 156-167. article doi:10.7498/aps.32.156 10.7498/aps.32.156 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.156 156-167 //www.getgobooth.com/en/article/doi/10.7498/aps.32.168 Author(s): DU YOU-WEI, LU HUAI-XIAN, ZHANG YU-CHANG, HUI LI-REN, WANG TING-XIANG <br/><p>The hexagonal ferrites LaxBa1-xFe12-xZnxO19 were prepared by oxalate eopreci-pitation method. The ferrites with magnet oplumbite structure were found to be formed for xf and the magnetic crystal anisotropy constant k decreases with increasing x. M?ssbauer spectra have revealed that Zn2+ ion tends to occupy 4f2 site.</p> <br/>Acta Physica Sinica. 1983 32(2): 168-175. Published 1983-01-05 Author(s): DU YOU-WEI, LU HUAI-XIAN, ZHANG YU-CHANG, HUI LI-REN, WANG TING-XIANG <br/><p>The hexagonal ferrites LaxBa1-xFe12-xZnxO19 were prepared by oxalate eopreci-pitation method. The ferrites with magnet oplumbite structure were found to be formed for xf and the magnetic crystal anisotropy constant k decreases with increasing x. M?ssbauer spectra have revealed that Zn2+ ion tends to occupy 4f2 site.</p> <br/>Acta Physica Sinica. 1983 32(2): 168-175. Published 1983-01-05 INVESTIGATION OF MAGNETIC PROPERTIES AND M?SSBAUER SPECTRA OF LaxBa1-xFe12-xZnxO19 FERRITES DU YOU-WEI, LU HUAI-XIAN, ZHANG YU-CHANG, HUI LI-REN, WANG TING-XIANG 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 168-175. article doi:10.7498/aps.32.168 10.7498/aps.32.168 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.168 168-175 //www.getgobooth.com/en/article/doi/10.7498/aps.32.176 Author(s): MAO TING-DE, LI JING-YUAN, FAN SHE-YONG, LIU YING-LIE <br/><p>Magnetic domains in a magnetic bubble film have been observed in different bias fields after application of pulsed bias fields. The experimental results indicate that the formation of multifingered domains during the rapid expansion of bubbles is usually accompanied by the generation of a large amount of vertical Bloch lines (VBL). The sign of the VBL has a definite relation to the strength of the bias fields applied. On application of a series of bias pulses which are not very strong, the motion of strip domain heads leads to the generation of a large amount of VBL in the domain walls. The VBL will disappear when the pulsed bias fields are strong enough.</p> <br/>Acta Physica Sinica. 1983 32(2): 176-181. Published 1983-01-05 Author(s): MAO TING-DE, LI JING-YUAN, FAN SHE-YONG, LIU YING-LIE <br/><p>Magnetic domains in a magnetic bubble film have been observed in different bias fields after application of pulsed bias fields. The experimental results indicate that the formation of multifingered domains during the rapid expansion of bubbles is usually accompanied by the generation of a large amount of vertical Bloch lines (VBL). The sign of the VBL has a definite relation to the strength of the bias fields applied. On application of a series of bias pulses which are not very strong, the motion of strip domain heads leads to the generation of a large amount of VBL in the domain walls. The VBL will disappear when the pulsed bias fields are strong enough.</p> <br/>Acta Physica Sinica. 1983 32(2): 176-181. Published 1983-01-05 GENERATION AND ANNIHILATION OF VERTICAL BLOCH LINES IN STRIP DOMAIN WALLS MAO TING-DE, LI JING-YUAN, FAN SHE-YONG, LIU YING-LIE 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 176-181. article doi:10.7498/aps.32.176 10.7498/aps.32.176 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.176 176-181 //www.getgobooth.com/en/article/doi/10.7498/aps.32.182 Author(s): ZHE XIAO-LI, ZHANG HONG-TU <br/><p>Plate-form inclusions of shear type represent the mechanical aspect of many important processes, such as the formation of slip bands, twin bands and martensitc plates in crystalline materials. All these processes connect closely with fracture of materials. Analytical expressions for stress intensity factors of the crack near the inclusion have been derived by using dislocation theoretical method. Using the results of this paper, some aspects of the cracking due to a plate-form inclusion are discussed. The Hall-Petch relation of twin-fracture stresses can be obtained from the inclusion model, and the theoretical results are in good agreement with experiments.</p> <br/>Acta Physica Sinica. 1983 32(2): 182-190. Published 1983-01-05 Author(s): ZHE XIAO-LI, ZHANG HONG-TU <br/><p>Plate-form inclusions of shear type represent the mechanical aspect of many important processes, such as the formation of slip bands, twin bands and martensitc plates in crystalline materials. All these processes connect closely with fracture of materials. Analytical expressions for stress intensity factors of the crack near the inclusion have been derived by using dislocation theoretical method. Using the results of this paper, some aspects of the cracking due to a plate-form inclusion are discussed. The Hall-Petch relation of twin-fracture stresses can be obtained from the inclusion model, and the theoretical results are in good agreement with experiments.</p> <br/>Acta Physica Sinica. 1983 32(2): 182-190. Published 1983-01-05 CRACKING DUE TO A PLATE-FORM INCLUSION OF SHEAR TYPE ZHE XIAO-LI, ZHANG HONG-TU 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 182-190. article doi:10.7498/aps.32.182 10.7498/aps.32.182 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.182 182-190 //www.getgobooth.com/en/article/doi/10.7498/aps.32.191 Author(s): ZHANG YANG-ZHONG <br/><p>It is assumed in the paper that the dominant mechanism for the anomalous electron transport in Tokamaks is the renormalized electron magnetic drift wave driven by temperature gradient. A scaling law for the anomalous electron transport coefficient D(T) has been derived by solving self -consistently the kinetic process, it reads D(T)=(c/ωpe)2 {((ve/qR)2/2π+(vc/2)2)1/2 - vc/2} It coincides in numerical values with the Alcator scaling law given by the Tokamak's experiments, and it agrees with the Ohkawa scaling law in the collisionless limit (vc → 0). Furthermore, its deviation from the Alcator scaling law is analyzed, and the possibility of achieving the thermonuclear ignition for a high-field ohmically heating Tokamak is also discussed based on the scaling law.</p> <br/>Acta Physica Sinica. 1983 32(2): 191-197. Published 1983-01-05 Author(s): ZHANG YANG-ZHONG <br/><p>It is assumed in the paper that the dominant mechanism for the anomalous electron transport in Tokamaks is the renormalized electron magnetic drift wave driven by temperature gradient. A scaling law for the anomalous electron transport coefficient D(T) has been derived by solving self -consistently the kinetic process, it reads D(T)=(c/ωpe)2 {((ve/qR)2/2π+(vc/2)2)1/2 - vc/2} It coincides in numerical values with the Alcator scaling law given by the Tokamak's experiments, and it agrees with the Ohkawa scaling law in the collisionless limit (vc → 0). Furthermore, its deviation from the Alcator scaling law is analyzed, and the possibility of achieving the thermonuclear ignition for a high-field ohmically heating Tokamak is also discussed based on the scaling law.</p> <br/>Acta Physica Sinica. 1983 32(2): 191-197. Published 1983-01-05 A SCALING LAW FOR THE ANOMALOUS ELECTRON TRANSPORT IN TOKAMAKS ZHANG YANG-ZHONG 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 191-197. article doi:10.7498/aps.32.191 10.7498/aps.32.191 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.191 191-197 //www.getgobooth.com/en/article/doi/10.7498/aps.32.198 Author(s): HAO BAI-LIN, ZHANG SHU-YU <br/><p>By using subharmonic stroboscopic sampling method, very high resolution, comparable with that for discret mappings, has been reached in numerical study of periodically forced nonlinear oscillators. For the first time period-doubling bifurcation sequences up to 8192th subharmonics and corresponding sequences of chaotic bands are identified for a system, described by ordinary differential equations. Secondary and tertiary bifurcation sequences embedded in chaotic bands are shown to exist. Merits and limitations of this method as well as some precaution in using it are discussed briefly.</p> <br/>Acta Physica Sinica. 1983 32(2): 198-208. Published 1983-01-05 Author(s): HAO BAI-LIN, ZHANG SHU-YU <br/><p>By using subharmonic stroboscopic sampling method, very high resolution, comparable with that for discret mappings, has been reached in numerical study of periodically forced nonlinear oscillators. For the first time period-doubling bifurcation sequences up to 8192th subharmonics and corresponding sequences of chaotic bands are identified for a system, described by ordinary differential equations. Secondary and tertiary bifurcation sequences embedded in chaotic bands are shown to exist. Merits and limitations of this method as well as some precaution in using it are discussed briefly.</p> <br/>Acta Physica Sinica. 1983 32(2): 198-208. Published 1983-01-05 SUBHARMONIC STROBOSCOPIC SAMPLING METHOD FOR STUDY OF PERIOD-DOUBLING BIFURCATION AND CHAOTIC PHENOMENA IN FORCED NONLINEAR OSCILLATORS HAO BAI-LIN, ZHANG SHU-YU 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 198-208. article doi:10.7498/aps.32.198 10.7498/aps.32.198 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.198 198-208 //www.getgobooth.com/en/article/doi/10.7498/aps.32.209 Author(s): CHEN SHI-GANG, WANG YOU-QIN <br/><p>The phenomenon of wave-length increase occurred in Rayleigh-Bénard convectiou is analysed by numerical method, and the result obtained is in good agreement with experiment. The calculations for stability and entropy production show that the criterion of maximum entropy production for relative stability of steady states is correct.</p> <br/>Acta Physica Sinica. 1983 32(2): 209-215. Published 1983-01-05 Author(s): CHEN SHI-GANG, WANG YOU-QIN <br/><p>The phenomenon of wave-length increase occurred in Rayleigh-Bénard convectiou is analysed by numerical method, and the result obtained is in good agreement with experiment. The calculations for stability and entropy production show that the criterion of maximum entropy production for relative stability of steady states is correct.</p> <br/>Acta Physica Sinica. 1983 32(2): 209-215. Published 1983-01-05 PHENOMENON OF WAVE-LENGTH INCREASE IN RAYLEIGH-BéNARD CONVECTION AND CRITERION OF MAXIMUM ENTROPY PRODUCTION CHEN SHI-GANG, WANG YOU-QIN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 209-215. article doi:10.7498/aps.32.209 10.7498/aps.32.209 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.209 209-215 //www.getgobooth.com/en/article/doi/10.7498/aps.32.216 Author(s): Lü MIN <br/><p>When the waveform of a radiation pulse is measured, a large number of radiation particles interact with the detector simultaneously. The output current waveform is proportional to the waveform of the radiation pulse. The statistical fluctuation phenomenon will appear when the radiation source is relatively weak or the sensitivity of the detector is low. In this paper, the fluctuation phenomenon are considered and mathematical expressions for fluctuation are given. We have also discussed the uncertainty due to statistical fluctuation of various pulse parameters measured, such as amplitude, width, time interval and other special parameters.</p> <br/>Acta Physica Sinica. 1983 32(2): 216-224. Published 1983-01-05 Author(s): Lü MIN <br/><p>When the waveform of a radiation pulse is measured, a large number of radiation particles interact with the detector simultaneously. The output current waveform is proportional to the waveform of the radiation pulse. The statistical fluctuation phenomenon will appear when the radiation source is relatively weak or the sensitivity of the detector is low. In this paper, the fluctuation phenomenon are considered and mathematical expressions for fluctuation are given. We have also discussed the uncertainty due to statistical fluctuation of various pulse parameters measured, such as amplitude, width, time interval and other special parameters.</p> <br/>Acta Physica Sinica. 1983 32(2): 216-224. Published 1983-01-05 STATISTICAL FLUCTUATION PROBLEM IN PULSED RADIATION DIAGNOSTICS Lü MIN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 216-224. article doi:10.7498/aps.32.216 10.7498/aps.32.216 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.216 216-224 //www.getgobooth.com/en/article/doi/10.7498/aps.32.225 Author(s): XU DIAN-YAN <br/><p>The Hawking radiation of charged Dirac particles on event horizon of Kerr-Newman black holes is studied in this paper. First, we construct the symmetrized null tetrad from which the symmetrized spin coefficients and Dirac equation are derived. Next, we solve the Dirac equation near the event horizon and get the four component ingoing and outgoing wave functions. Finally, by analytic continuation, the Hawking thermal spectrum formula of Dirac particles for arbitrary Kerr-Newman black holes is obtained.</p> <br/>Acta Physica Sinica. 1983 32(2): 225-238. Published 1983-01-05 Author(s): XU DIAN-YAN <br/><p>The Hawking radiation of charged Dirac particles on event horizon of Kerr-Newman black holes is studied in this paper. First, we construct the symmetrized null tetrad from which the symmetrized spin coefficients and Dirac equation are derived. Next, we solve the Dirac equation near the event horizon and get the four component ingoing and outgoing wave functions. Finally, by analytic continuation, the Hawking thermal spectrum formula of Dirac particles for arbitrary Kerr-Newman black holes is obtained.</p> <br/>Acta Physica Sinica. 1983 32(2): 225-238. Published 1983-01-05 THE HAWKING RADIATION OF CHARGED DIRAC PARTICLES IN KERR-NEWMAN SPACETIME XU DIAN-YAN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 225-238. article doi:10.7498/aps.32.225 10.7498/aps.32.225 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.225 225-238 //www.getgobooth.com/en/article/doi/10.7498/aps.32.239 Author(s): ZHANG XIU-MIAO, BAO ZONG-MING, SU JIU-LING <br/><p>A simple method for determining both the generation lifetime and surface generation velocity is suggested. By this method, using the data of three points from the MOS capacitance transient response to a step voltage, both the generation lifetime and surface generation velocity can be calculated readily. The experimental results show that this method is reasonable, and indicate that neglecting surface generation velocity would result in reducing of apparent generation lifetime.</p> <br/>Acta Physica Sinica. 1983 32(2): 239-246. Published 1983-01-05 Author(s): ZHANG XIU-MIAO, BAO ZONG-MING, SU JIU-LING <br/><p>A simple method for determining both the generation lifetime and surface generation velocity is suggested. By this method, using the data of three points from the MOS capacitance transient response to a step voltage, both the generation lifetime and surface generation velocity can be calculated readily. The experimental results show that this method is reasonable, and indicate that neglecting surface generation velocity would result in reducing of apparent generation lifetime.</p> <br/>Acta Physica Sinica. 1983 32(2): 239-246. Published 1983-01-05 DETERMINATION OF THE GENERATION LIFETIME AND SURFACE GENERATION VELOCITY BY VOLTAGE STEP METHOD ZHANG XIU-MIAO, BAO ZONG-MING, SU JIU-LING 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 239-246. article doi:10.7498/aps.32.239 10.7498/aps.32.239 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.239 239-246 //www.getgobooth.com/en/article/doi/10.7498/aps.32.247 Author(s): XU YONG-NIAN, ZHANG KAI-MING <br/><p>In this paper, the clean surface GaAs1-xPx(110) has been studied by the EHT method using a cluster model. We obtained the following results: (1) the value of the rotated relaxation angle is about 26°. (2) For x≥0.25 the empty intrinsic cation states are found in the gap near the conduction band edge.</p> <br/>Acta Physica Sinica. 1983 32(2): 247-250. Published 1983-01-05 Author(s): XU YONG-NIAN, ZHANG KAI-MING <br/><p>In this paper, the clean surface GaAs1-xPx(110) has been studied by the EHT method using a cluster model. We obtained the following results: (1) the value of the rotated relaxation angle is about 26°. (2) For x≥0.25 the empty intrinsic cation states are found in the gap near the conduction band edge.</p> <br/>Acta Physica Sinica. 1983 32(2): 247-250. Published 1983-01-05 THE ATOMIC STRUCTURE AND ELECTRONIC STATES OF GaAs1-xPx (110) XU YONG-NIAN, ZHANG KAI-MING 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 247-250. article doi:10.7498/aps.32.247 10.7498/aps.32.247 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.247 247-250 //www.getgobooth.com/en/article/doi/10.7498/aps.32.251 Author(s): CHENG JIAN-BANG, CHENG WAN-RONG, WANG XI-HONG, HAO GONG-ZHANG, WU ZHANG-CUN <br/><p>A non-destructive method for determination of composition and thickness of ternary alloy thin film by using the technique of X-ray fluorescence spectroscopy is employed in this paper. In this method, it is not necessary to prepare any similar solid or pure elemental standards, instead, the filter disk standards are used. These disk standards can be made readily and are stable for long period of time. A set of equations relating the characteristic X-ray intensities from elements in the film and its surface densities are formulated and solved for film composition. The quantitative dependence of attenuation of characteristic X-ray intensities of elements in substrate on increasing film thickness is used to determine the thickness. This method can be used to measure the film composition and thickness simultaneously.</p> <br/>Acta Physica Sinica. 1983 32(2): 251-255. Published 1983-01-05 Author(s): CHENG JIAN-BANG, CHENG WAN-RONG, WANG XI-HONG, HAO GONG-ZHANG, WU ZHANG-CUN <br/><p>A non-destructive method for determination of composition and thickness of ternary alloy thin film by using the technique of X-ray fluorescence spectroscopy is employed in this paper. In this method, it is not necessary to prepare any similar solid or pure elemental standards, instead, the filter disk standards are used. These disk standards can be made readily and are stable for long period of time. A set of equations relating the characteristic X-ray intensities from elements in the film and its surface densities are formulated and solved for film composition. The quantitative dependence of attenuation of characteristic X-ray intensities of elements in substrate on increasing film thickness is used to determine the thickness. This method can be used to measure the film composition and thickness simultaneously.</p> <br/>Acta Physica Sinica. 1983 32(2): 251-255. Published 1983-01-05 NON-DESTRUCTIVE DETERMINATION OF COMPOSITION AND THICKNESS OF MULTI-COMPONENT ALLOY THIN FILMS BY X-RAY FLUORESCENCE SPECTROSCOPIC METHOD CHENG JIAN-BANG, CHENG WAN-RONG, WANG XI-HONG, HAO GONG-ZHANG, WU ZHANG-CUN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 251-255. article doi:10.7498/aps.32.251 10.7498/aps.32.251 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.251 251-255 //www.getgobooth.com/en/article/doi/10.7498/aps.32.256 Author(s): CHEN XI-SEN, WANG ZU-LUN, GUAN WEI-YAN <br/><p>The microstructure and superconducting-normal transitions of fast quenched supersaturated solid solution Al-lat% Ge alloy have been studied. X-ray structural analysis of the sample indicated that Al-lat% Ge alloy consists of a homogeneous supersaturated α-Al(Ge) solid solution.The resistance measurement shows that for solid solution alloy α-Al(Ge) Tc≈1.44K, which is higher than that of pure Al.</p> <br/>Acta Physica Sinica. 1983 32(2): 256-258. Published 1983-01-05 Author(s): CHEN XI-SEN, WANG ZU-LUN, GUAN WEI-YAN <br/><p>The microstructure and superconducting-normal transitions of fast quenched supersaturated solid solution Al-lat% Ge alloy have been studied. X-ray structural analysis of the sample indicated that Al-lat% Ge alloy consists of a homogeneous supersaturated α-Al(Ge) solid solution.The resistance measurement shows that for solid solution alloy α-Al(Ge) Tc≈1.44K, which is higher than that of pure Al.</p> <br/>Acta Physica Sinica. 1983 32(2): 256-258. Published 1983-01-05 THE SUPERCONDUCTING-NORMAL TRANSITIONS OF FAST QUENCHED SUPERSATURATED SOLID SOLUTION Al-lat% Ge ALLOY CHEN XI-SEN, WANG ZU-LUN, GUAN WEI-YAN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 256-258. article doi:10.7498/aps.32.256 10.7498/aps.32.256 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.256 256-258 //www.getgobooth.com/en/article/doi/10.7498/aps.32.259 Author(s): YANG GUI-LIN, XU YOU, CHU DA-PING, XUE DENG-PING, ZHAI HONG-RU <br/><p>In this papar, we calculated the influence of 5d-4f mixing caused by odd parity crystal field on level splitting of Ce3+ ions in CaF2 and SrF2 lattices. Results indicated that odd parity crystal field effect on level splitting may be fairly large. For lower levels in CaF2 the contribution of odd parity crystal field may amount to 15-30%. The order of 1st and 2nd excited states even reverses. On the other hand, it has been shown that configuration mixing is one of the possible mechanisms causing the extension of radial wave fanctions of ions in crystal.</p> <br/>Acta Physica Sinica. 1983 32(2): 259-266. Published 1983-01-05 Author(s): YANG GUI-LIN, XU YOU, CHU DA-PING, XUE DENG-PING, ZHAI HONG-RU <br/><p>In this papar, we calculated the influence of 5d-4f mixing caused by odd parity crystal field on level splitting of Ce3+ ions in CaF2 and SrF2 lattices. Results indicated that odd parity crystal field effect on level splitting may be fairly large. For lower levels in CaF2 the contribution of odd parity crystal field may amount to 15-30%. The order of 1st and 2nd excited states even reverses. On the other hand, it has been shown that configuration mixing is one of the possible mechanisms causing the extension of radial wave fanctions of ions in crystal.</p> <br/>Acta Physica Sinica. 1983 32(2): 259-266. Published 1983-01-05 INFLUENCE OF ODD PARITY CRYCTAL FIELD ON LEVEL SPLITTING OF Ce3+ IONS YANG GUI-LIN, XU YOU, CHU DA-PING, XUE DENG-PING, ZHAI HONG-RU 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 259-266. article doi:10.7498/aps.32.259 10.7498/aps.32.259 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.259 259-266 //www.getgobooth.com/en/article/doi/10.7498/aps.32.267 Author(s): QIN KE-CHENG <br/><p>The mean square error of the multiplicative model for speckle noise in coherent imaging is derived. Then we obtain the condition under which the multiplicative model is valid, that is: the model holds only when the details of the object can be completely resolved by the imaging system.</p> <br/>Acta Physica Sinica. 1983 32(2): 267-272. Published 1983-01-05 Author(s): QIN KE-CHENG <br/><p>The mean square error of the multiplicative model for speckle noise in coherent imaging is derived. Then we obtain the condition under which the multiplicative model is valid, that is: the model holds only when the details of the object can be completely resolved by the imaging system.</p> <br/>Acta Physica Sinica. 1983 32(2): 267-272. Published 1983-01-05 THE MEAN SQUARE ERROR OF THE MULTIPLICATIVE MODEL FOR SPECKLE NOISE QIN KE-CHENG 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 267-272. article doi:10.7498/aps.32.267 10.7498/aps.32.267 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.267 267-272 //www.getgobooth.com/en/article/doi/10.7498/aps.32.273 Author(s): LIN XIU-YUN, ZHANG SHU-DE <br/><p>ANCAOLAN is a weed killer, its series product, the crystal Ⅰ(C11H16N2O4 PSCL) and crystal Ⅱ(C12H13P21/c. There are four molecules in a unit cell. The crystal parameters are: crystal Ⅰ α=8.575?, b= 26.541 ?, c= 7.063?,β= 94.744°; crystal Ⅱ α= 8.575?, b= 26.538?, c= 7.073?, β= 93.819°. For the crystals Ⅰ and Ⅱ, the three-dimensional intensity data were collected by using PW-1100 four-circle diffractometer and the numbers of independent diffractions are 3123 and 3166 respectively.Their structures were solved by direct method and refined by full matrix least-squares method. Their final .R-factors are 0.10 and 0.11 respectively.The plane of nitro is perpendicular to the plane of benzene ring.The weed killing effect of crystal Ⅱ is better than that of the crystal Ⅰ.</p> <br/>Acta Physica Sinica. 1983 32(2): 273-279. Published 1983-01-05 Author(s): LIN XIU-YUN, ZHANG SHU-DE <br/><p>ANCAOLAN is a weed killer, its series product, the crystal Ⅰ(C11H16N2O4 PSCL) and crystal Ⅱ(C12H13P21/c. There are four molecules in a unit cell. The crystal parameters are: crystal Ⅰ α=8.575?, b= 26.541 ?, c= 7.063?,β= 94.744°; crystal Ⅱ α= 8.575?, b= 26.538?, c= 7.073?, β= 93.819°. For the crystals Ⅰ and Ⅱ, the three-dimensional intensity data were collected by using PW-1100 four-circle diffractometer and the numbers of independent diffractions are 3123 and 3166 respectively.Their structures were solved by direct method and refined by full matrix least-squares method. Their final .R-factors are 0.10 and 0.11 respectively.The plane of nitro is perpendicular to the plane of benzene ring.The weed killing effect of crystal Ⅱ is better than that of the crystal Ⅰ.</p> <br/>Acta Physica Sinica. 1983 32(2): 273-279. Published 1983-01-05 MOLECULAR AND CRYSTAL STRUCTURE OF ANCAOLIA (CRYSTAL Ⅰ AND CRYSTAL Ⅱ) LIN XIU-YUN, ZHANG SHU-DE 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 273-279. article doi:10.7498/aps.32.273 10.7498/aps.32.273 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.273 273-279 //www.getgobooth.com/en/article/doi/10.7498/aps.32.280 Author(s): ZHENG CHAO-DE, GU YUAN-XIN <br/><p>α-CHLORO-N-SEC-BUTYI-CINNAMIDE crystal (trans) belongs to orthorhombic system. The space group is D2h15-Pbca with eight molecules in a cell of dimension α= 18.842 (0.006)?, b=14.076 (0.006)?, c=10.077 (0.003)?. The intensity data were collected on RASA-IIS four-circle diffractometer. The number of independent reflexions is 929. The structure was solved by direct method (MULTAN-80). Refinement of structure parameters was achieved by block- matrix least-squares method, R =0.088.</p> <br/>Acta Physica Sinica. 1983 32(2): 280-284. Published 1983-01-05 Author(s): ZHENG CHAO-DE, GU YUAN-XIN <br/><p>α-CHLORO-N-SEC-BUTYI-CINNAMIDE crystal (trans) belongs to orthorhombic system. The space group is D2h15-Pbca with eight molecules in a cell of dimension α= 18.842 (0.006)?, b=14.076 (0.006)?, c=10.077 (0.003)?. The intensity data were collected on RASA-IIS four-circle diffractometer. The number of independent reflexions is 929. The structure was solved by direct method (MULTAN-80). Refinement of structure parameters was achieved by block- matrix least-squares method, R =0.088.</p> <br/>Acta Physica Sinica. 1983 32(2): 280-284. Published 1983-01-05 DETERMINATION OF CRYSTAL STRUCTURE OF α-CHLORO-N-SEC-BUTYI-CINNAMIDE ZHENG CHAO-DE, GU YUAN-XIN 1983-01-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1983 32(2): 280-284. article doi:10.7498/aps.32.280 10.7498/aps.32.280 Acta Physica Sinica 32 2 1983-01-05 //www.getgobooth.com/en/article/doi/10.7498/aps.32.280 280-284

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