//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:39 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:39 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.29.1237 Author(s): TAN SONG-SHENG, CHEN PEI-RAN <br/><p>In order to interpret the EBIC (electron beam induced current) photographs of scanning electron microscope, it is found nacessary to take the effect of photo injected carriers from forward biased pn junction into consideration. In this paper, results of constrast observation on a series of EBIC photographs of a trasistor at different levels of applied voltage are discussed. Based on the Bbers-Moll model for transistors together with some additional assumptions, we have been able to derive equations capable of describing the saturation current, effects of photo injected carriers from forward biased and reverse biased pn junctions. The theoretical analyses are qualitatively in agreement with the experimental results.</p> <br/>Acta Physica Sinica. 1980 29(10): 1237-1244. Published 1980-05-05 Author(s): TAN SONG-SHENG, CHEN PEI-RAN <br/><p>In order to interpret the EBIC (electron beam induced current) photographs of scanning electron microscope, it is found nacessary to take the effect of photo injected carriers from forward biased pn junction into consideration. In this paper, results of constrast observation on a series of EBIC photographs of a trasistor at different levels of applied voltage are discussed. Based on the Bbers-Moll model for transistors together with some additional assumptions, we have been able to derive equations capable of describing the saturation current, effects of photo injected carriers from forward biased and reverse biased pn junctions. The theoretical analyses are qualitatively in agreement with the experimental results.</p> <br/>Acta Physica Sinica. 1980 29(10): 1237-1244. Published 1980-05-05 THE EFFECT OF PHOTO-INJECTED CARRIERS IN FORWARD BIASED JUNCTIONS OF A MULTIJUNCTION DEVICE TAN SONG-SHENG, CHEN PEI-RAN 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1237-1244. article doi:10.7498/aps.29.1237 10.7498/aps.29.1237 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1237 1237-1244 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1245 Author(s): GU SHI-WEI <br/><p>In this paper, the properties of a slow exciton in a polar crystal are discussed. The previous work of the author is generalized to the case that the electron mass is not equal to the hole mass. A perturbation method developed by Haga is used. In the approxiamation that the interaction of phonons of different wave vector in the recoil effect can be neglected, the wave function in the second order approxiamation is derived, and the electrostatic pontential is also calculated.</p> <br/>Acta Physica Sinica. 1980 29(10): 1245-1253. Published 1980-05-05 Author(s): GU SHI-WEI <br/><p>In this paper, the properties of a slow exciton in a polar crystal are discussed. The previous work of the author is generalized to the case that the electron mass is not equal to the hole mass. A perturbation method developed by Haga is used. In the approxiamation that the interaction of phonons of different wave vector in the recoil effect can be neglected, the wave function in the second order approxiamation is derived, and the electrostatic pontential is also calculated.</p> <br/>Acta Physica Sinica. 1980 29(10): 1245-1253. Published 1980-05-05 THE ELECTROSTATIC POTENTIAL OF SLOW EXCITON IN A POLAR CRYSTAL GU SHI-WEI 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1245-1253. article doi:10.7498/aps.29.1245 10.7498/aps.29.1245 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1245 1245-1253 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1254 Author(s): XIA MENG-FEN, HU HUI-LING <br/><p>The correlation functions and kinetic equation for a plasma immersed in a stochastic magnatic field are derived. Based on our equation, the transport phenomenon are discussed.</p> <br/>Acta Physica Sinica. 1980 29(10): 1254-1262. Published 1980-05-05 Author(s): XIA MENG-FEN, HU HUI-LING <br/><p>The correlation functions and kinetic equation for a plasma immersed in a stochastic magnatic field are derived. Based on our equation, the transport phenomenon are discussed.</p> <br/>Acta Physica Sinica. 1980 29(10): 1254-1262. Published 1980-05-05 KINETIC EQUATION IN A STOCHASTIC MAGNETIC FIELD XIA MENG-FEN, HU HUI-LING 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1254-1262. article doi:10.7498/aps.29.1254 10.7498/aps.29.1254 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1254 1254-1262 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1263 Author(s): KE FU-JIU, SHEN JIE-WU, XU MIN-JIAN <br/><p>The analytic solutions and numerical solutions of the equations of magnetic surface with fixed-boundary conditions are solved for the equilibrium plasma. The pressure, the velocity and the magnetic field fluctuations are evaluated with the simplified Lax-Wendroff method. The linear growth rates, the average β and βp, and the safety factor are obtained. We find that (1) plasma with concave currents profiles is more stable than that with uniform currents profiles, and plasma with convex currents profiles is least stable; (2) plamsa with diamagnetic currents is more stable than that with paramagnetic currents.</p> <br/>Acta Physica Sinica. 1980 29(10): 1263-1274. Published 1980-05-05 Author(s): KE FU-JIU, SHEN JIE-WU, XU MIN-JIAN <br/><p>The analytic solutions and numerical solutions of the equations of magnetic surface with fixed-boundary conditions are solved for the equilibrium plasma. The pressure, the velocity and the magnetic field fluctuations are evaluated with the simplified Lax-Wendroff method. The linear growth rates, the average β and βp, and the safety factor are obtained. We find that (1) plasma with concave currents profiles is more stable than that with uniform currents profiles, and plasma with convex currents profiles is least stable; (2) plamsa with diamagnetic currents is more stable than that with paramagnetic currents.</p> <br/>Acta Physica Sinica. 1980 29(10): 1263-1274. Published 1980-05-05 THE KINK INSTABILITY OF A PLASMA WITH FIXED-BOUN-DARY BY THE METHOD OF INITIAL-BOUNDARY VALUES KE FU-JIU, SHEN JIE-WU, XU MIN-JIAN 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1263-1274. article doi:10.7498/aps.29.1263 10.7498/aps.29.1263 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1263 1263-1274 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1275 Author(s): JIN LONG-HUAN, CHANG LONG-CHUN <br/><p>In this work, the structures of the amorphous alloys Fe5Co70Si15B10,Fe78Si1OB12 and Fe80B20 were analysed by X-ray diffraction method. From the diffraction intensity data the structure factors and radial distribution functions (RDF) of these materials were calculated.In order to obtain partial radial distribution functions (PRDF) of the binary alloy Fe80B20, the first peak of the alloy was fitted using a sum of two Gauss type functions. One of them describes the PRDF of the Fe-Fe atom pair, and the other describes the PRDF of the Fe-B atom pair.As the results of fitting, the average number of nearest neighbor atoms and most probable distance between two atoms were determined for each kind of atom pair. The curves of PRDF and the values of those parameters agree satisfactorily with the results obtained by other author using anomalous X-ray diffraction technique.</p> <br/>Acta Physica Sinica. 1980 29(10): 1275-1282. Published 1980-05-05 Author(s): JIN LONG-HUAN, CHANG LONG-CHUN <br/><p>In this work, the structures of the amorphous alloys Fe5Co70Si15B10,Fe78Si1OB12 and Fe80B20 were analysed by X-ray diffraction method. From the diffraction intensity data the structure factors and radial distribution functions (RDF) of these materials were calculated.In order to obtain partial radial distribution functions (PRDF) of the binary alloy Fe80B20, the first peak of the alloy was fitted using a sum of two Gauss type functions. One of them describes the PRDF of the Fe-Fe atom pair, and the other describes the PRDF of the Fe-B atom pair.As the results of fitting, the average number of nearest neighbor atoms and most probable distance between two atoms were determined for each kind of atom pair. The curves of PRDF and the values of those parameters agree satisfactorily with the results obtained by other author using anomalous X-ray diffraction technique.</p> <br/>Acta Physica Sinica. 1980 29(10): 1275-1282. Published 1980-05-05 X-RAY STRUCTURE ANALYSIS OF AMORPHOUS ALLOYS FeCoSiB, FeSiB AND FeB JIN LONG-HUAN, CHANG LONG-CHUN 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1275-1282. article doi:10.7498/aps.29.1275 10.7498/aps.29.1275 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1275 1275-1282 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1283 Author(s): JIANG BAI-LIN, SHENG SHI-XIONG, XIAO ZHI-GANG, BAO JIAN-YING <br/><p>The mechanism of the formation of the defects during heat treatment in single silicon crystal, which had been grown by floating zone method under pure hydrogen, have been studied by means of X-ray topography, infrared absorption spectrography and chemical etching method.Three kinds of Si-H bonds were observed in the as-grown crystal, their infrared absorption peaks were at 4.55 μm, 4.75 μm and 5.13μm respectively. During heating these Si-H bonds were broken up gradually and dis appeared at last. The disappearing temperature of 5.1μm, 4.55 μm, and 4.75 μm absorption peaks were 450℃, 600℃ and 700℃ respectively.The heat-treatment defects were originated from hydrogen precipitation in the crystal. The sequence of the precipitation process was found to be as follows: Si-H bonds were broken at first, and then hydrogen diffused and coalesced together. The activitation energy of the precipitation process was found to be 2.4 eV (56000 cal/mol).Due to hydrogen preciptation, the prismatic dislocation loops were formed around hydrogen precipitates at definite temperature (about 600-700℃).</p> <br/>Acta Physica Sinica. 1980 29(10): 1283-1292. Published 1980-05-05 Author(s): JIANG BAI-LIN, SHENG SHI-XIONG, XIAO ZHI-GANG, BAO JIAN-YING <br/><p>The mechanism of the formation of the defects during heat treatment in single silicon crystal, which had been grown by floating zone method under pure hydrogen, have been studied by means of X-ray topography, infrared absorption spectrography and chemical etching method.Three kinds of Si-H bonds were observed in the as-grown crystal, their infrared absorption peaks were at 4.55 μm, 4.75 μm and 5.13μm respectively. During heating these Si-H bonds were broken up gradually and dis appeared at last. The disappearing temperature of 5.1μm, 4.55 μm, and 4.75 μm absorption peaks were 450℃, 600℃ and 700℃ respectively.The heat-treatment defects were originated from hydrogen precipitation in the crystal. The sequence of the precipitation process was found to be as follows: Si-H bonds were broken at first, and then hydrogen diffused and coalesced together. The activitation energy of the precipitation process was found to be 2.4 eV (56000 cal/mol).Due to hydrogen preciptation, the prismatic dislocation loops were formed around hydrogen precipitates at definite temperature (about 600-700℃).</p> <br/>Acta Physica Sinica. 1980 29(10): 1283-1292. Published 1980-05-05 MECHANISM OF THE FORMATION OF THE DEFECTS DURING HEAT TREATMENT IN SINGLE SILICON CRYSTAL GROWN BY FLOATING ZONE METHOD UNDER PURE HYDROGEN JIANG BAI-LIN, SHENG SHI-XIONG, XIAO ZHI-GANG, BAO JIAN-YING 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1283-1292. article doi:10.7498/aps.29.1283 10.7498/aps.29.1283 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1283 1283-1292 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1293 Author(s): LIANG JING-KUI, YU YU-DE <br/><p>The phase equilibrium of pseudo-binary system LiIO3-HIO3 has been investigated by means of DTA, TGA and X-ray diffraction. The thermal properties and crystal structures of solid solutions based on α-LiIO3 and 2LiIO3 ·HIO3 are studied. 2LiIO3·HIO3 is isomorphic with α-LiIO3, belonging to hexagonal system. The space group is P63. The lattice parameters are: a=5.555?, c=4.953?. The parameter c decreases and parameter a increases with the HIO3 content. Compared with α-LiIO3, IO3- group expands along plane x-y and compressed along z-axis, i.e., the bond angle O-I-O becomes larger. 2LiIO3 ·HIO3 which is physicochemically different from α-LiIO3, is a new compound in the system LiIO3-HIO3, 2LiIO3·HIO3 does not form continuous solid solution with LilO3.</p> <br/>Acta Physica Sinica. 1980 29(10): 1293-1300. Published 1980-05-05 Author(s): LIANG JING-KUI, YU YU-DE <br/><p>The phase equilibrium of pseudo-binary system LiIO3-HIO3 has been investigated by means of DTA, TGA and X-ray diffraction. The thermal properties and crystal structures of solid solutions based on α-LiIO3 and 2LiIO3 ·HIO3 are studied. 2LiIO3·HIO3 is isomorphic with α-LiIO3, belonging to hexagonal system. The space group is P63. The lattice parameters are: a=5.555?, c=4.953?. The parameter c decreases and parameter a increases with the HIO3 content. Compared with α-LiIO3, IO3- group expands along plane x-y and compressed along z-axis, i.e., the bond angle O-I-O becomes larger. 2LiIO3 ·HIO3 which is physicochemically different from α-LiIO3, is a new compound in the system LiIO3-HIO3, 2LiIO3·HIO3 does not form continuous solid solution with LilO3.</p> <br/>Acta Physica Sinica. 1980 29(10): 1293-1300. Published 1980-05-05 THE CRYSTAL STRUCTURE AND PHASE TRANSITIONS OF 2LiIO&lt;sub&lt;3&lt;/sub&lt; HIO&lt;sub&lt;3&lt;/sub&lt; LIANG JING-KUI, YU YU-DE 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1293-1300. article doi:10.7498/aps.29.1293 10.7498/aps.29.1293 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1293 1293-1300 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1301 Author(s): YANG GUO-ZHEN, PAN SHAO-HUA <br/><p>In this paper, we analyse the problem of the optical realization of Walsh transformation, and give the design of the optical system which is composed of holographic lenses and can be used to realize the 8×8 complex Walsh transformation in two-dimensional space.</p> <br/>Acta Physica Sinica. 1980 29(10): 1301-1306. Published 1980-05-05 Author(s): YANG GUO-ZHEN, PAN SHAO-HUA <br/><p>In this paper, we analyse the problem of the optical realization of Walsh transformation, and give the design of the optical system which is composed of holographic lenses and can be used to realize the 8×8 complex Walsh transformation in two-dimensional space.</p> <br/>Acta Physica Sinica. 1980 29(10): 1301-1306. Published 1980-05-05 A SCHEME FOR OPTICAL REALIZATION OF WALSH TRANSFORMATION YANG GUO-ZHEN, PAN SHAO-HUA 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1301-1306. article doi:10.7498/aps.29.1301 10.7498/aps.29.1301 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1301 1301-1306 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1307 Author(s): CHEN YAN-SONG, WANG YU-TANG, LI XIU-YING <br/><p>The Walsh transformation has been experimentally carried out with coherent optical system. A five-plane coherent transformation device is designed, 1 - dimensional 8-sequence Walsh transformation is realized, the Walsh transform-spectrum is given. This design may be applied in principle to two-dimensional Walsh transformation.</p> <br/>Acta Physica Sinica. 1980 29(10): 1307-1314. Published 1980-05-05 Author(s): CHEN YAN-SONG, WANG YU-TANG, LI XIU-YING <br/><p>The Walsh transformation has been experimentally carried out with coherent optical system. A five-plane coherent transformation device is designed, 1 - dimensional 8-sequence Walsh transformation is realized, the Walsh transform-spectrum is given. This design may be applied in principle to two-dimensional Walsh transformation.</p> <br/>Acta Physica Sinica. 1980 29(10): 1307-1314. Published 1980-05-05 THE OPTICAL REALIZATION OF WALSH TRANSFORMATION WITH COHERENT SYSTEM CHEN YAN-SONG, WANG YU-TANG, LI XIU-YING 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1307-1314. article doi:10.7498/aps.29.1307 10.7498/aps.29.1307 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1307 1307-1314 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1315 Author(s): CHEN SHI-GANG <br/><p>Initiated from Graham's and Landauer's criticism, we discuss the problem of applicable range and practical value of the Glansdorff-Prigogine criterion and of the theorem of minimum entropy production in this paper. We point out that the Glansd-orff-Prigogine criterion as a thermodynamic theory is rigorous, but in the practical problem of many variables, it has no applicable value. And, the applicable range of the theorem of minimum entropy production is much smaller than that of other theorem's in the linear non-equilibrium thermodynamics, therefore, to use it as a principle is not adequate. But landauer's criticism about the theorem of minimum entropy production is wrong.</p> <br/>Acta Physica Sinica. 1980 29(10): 1315-1322. Published 1980-05-05 Author(s): CHEN SHI-GANG <br/><p>Initiated from Graham's and Landauer's criticism, we discuss the problem of applicable range and practical value of the Glansdorff-Prigogine criterion and of the theorem of minimum entropy production in this paper. We point out that the Glansd-orff-Prigogine criterion as a thermodynamic theory is rigorous, but in the practical problem of many variables, it has no applicable value. And, the applicable range of the theorem of minimum entropy production is much smaller than that of other theorem's in the linear non-equilibrium thermodynamics, therefore, to use it as a principle is not adequate. But landauer's criticism about the theorem of minimum entropy production is wrong.</p> <br/>Acta Physica Sinica. 1980 29(10): 1315-1322. Published 1980-05-05 GLANSDORFF-PRIGOGINE CRITERION AND THEOREM OF MINIMUM ENTROPY PRODUCTION CHEN SHI-GANG 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1315-1322. article doi:10.7498/aps.29.1315 10.7498/aps.29.1315 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1315 1315-1322 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1323 Author(s): CHEN SHI-GANG <br/><p>In this paper, we discuss the problem of two stationary solutions of the Liouville equation when an external field is present. We show that the key point for calculating the transport coefficient by the Kubo formula is: before completing the integral over time, the time behavior of the correlation function must be expressed in terms of the theory of approach to equilibrium. With this point, being considered, it is then possible to derive the correct expression for transport coefficient. Using this method, we calculate once again the conductivity under strong magnetic field that had been discussed in reference [1], and obtain a correct non-vanishing result.</p> <br/>Acta Physica Sinica. 1980 29(10): 1323-1332. Published 1980-05-05 Author(s): CHEN SHI-GANG <br/><p>In this paper, we discuss the problem of two stationary solutions of the Liouville equation when an external field is present. We show that the key point for calculating the transport coefficient by the Kubo formula is: before completing the integral over time, the time behavior of the correlation function must be expressed in terms of the theory of approach to equilibrium. With this point, being considered, it is then possible to derive the correct expression for transport coefficient. Using this method, we calculate once again the conductivity under strong magnetic field that had been discussed in reference [1], and obtain a correct non-vanishing result.</p> <br/>Acta Physica Sinica. 1980 29(10): 1323-1332. Published 1980-05-05 TRANSPORT PROCESS UNDER STRONG MAGNETIC FIELD AND TWO STATIONARY SOLUTIONS OF THE LIOUVILLE EQUATION CHEN SHI-GANG 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1323-1332. article doi:10.7498/aps.29.1323 10.7498/aps.29.1323 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1323 1323-1332 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1333 Author(s): LEI XIAO-LIN <br/><p>It is pointed out that zph≡F(-ωph-2 is generally a branch point of the inverse function of the function z=F(y)≡∫0(ωph)(ω2y)/(ω2y+1)g(ω)dω, where g(ω) is the normalized effective phonon spectral function of the system. There-fore it should be taken into account in evaluating the radius of convergence of the series for superconducting critical temperature of the system.</p> <br/>Acta Physica Sinica. 1980 29(10): 1333-1337. Published 1980-05-05 Author(s): LEI XIAO-LIN <br/><p>It is pointed out that zph≡F(-ωph-2 is generally a branch point of the inverse function of the function z=F(y)≡∫0(ωph)(ω2y)/(ω2y+1)g(ω)dω, where g(ω) is the normalized effective phonon spectral function of the system. There-fore it should be taken into account in evaluating the radius of convergence of the series for superconducting critical temperature of the system.</p> <br/>Acta Physica Sinica. 1980 29(10): 1333-1337. Published 1980-05-05 A NOTE ON THE RADIUS OF CONVERGENCE OF THE SERIES FOR SUPERCONDUCTING CRITICAL TEMPERATURE LEI XIAO-LIN 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1333-1337. article doi:10.7498/aps.29.1333 10.7498/aps.29.1333 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1333 1333-1337 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1338 Author(s): ZHOU ZI-FANG, MAO DE-QIANG, GU YI-MING, WU HANG-SHENG <br/><p>In this paper, an example is given, through which we have arrived at the following conclusion: the convergence radius of the first order approximate Tc series solutionfor μ*=0 is determined neither by nor by zph=-∫0(ωph)dωg(ω)dω(ω2)/(ωph2-ω2) nor by zph=∫0(ωph)dωg(ω)dω(ω2)/(ωph2+ω2).</p> <br/>Acta Physica Sinica. 1980 29(10): 1338-1341. Published 1980-05-05 Author(s): ZHOU ZI-FANG, MAO DE-QIANG, GU YI-MING, WU HANG-SHENG <br/><p>In this paper, an example is given, through which we have arrived at the following conclusion: the convergence radius of the first order approximate Tc series solutionfor μ*=0 is determined neither by nor by zph=-∫0(ωph)dωg(ω)dω(ω2)/(ωph2-ω2) nor by zph=∫0(ωph)dωg(ω)dω(ω2)/(ωph2+ω2).</p> <br/>Acta Physica Sinica. 1980 29(10): 1338-1341. Published 1980-05-05 NOTE ON THE PROBLEM OF THE CONVERGENCE OF THE FIRST ORDER APPROXIMATE T&lt;sub&lt;c&lt;/sub&lt; SERIES SOLUTION ZHOU ZI-FANG, MAO DE-QIANG, GU YI-MING, WU HANG-SHENG 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1338-1341. article doi:10.7498/aps.29.1338 10.7498/aps.29.1338 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1338 1338-1341 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1342 Author(s): FAN HAI-FU, ZHENG QI-TAI, LI PENG-FEI <br/><p>In this paper a procedure is given, which makes use of the anomalous scattering effect in two dimensional reflections to discriminate the two-fold possibilities of atomic positions resulting from the analysis of certain three dimensinal Patterson functions. The procedure has been applied to solve an unknown structure of moderate complexity and proved to be effective.</p> <br/>Acta Physica Sinica. 1980 29(10): 1342-1346. Published 1980-05-05 Author(s): FAN HAI-FU, ZHENG QI-TAI, LI PENG-FEI <br/><p>In this paper a procedure is given, which makes use of the anomalous scattering effect in two dimensional reflections to discriminate the two-fold possibilities of atomic positions resulting from the analysis of certain three dimensinal Patterson functions. The procedure has been applied to solve an unknown structure of moderate complexity and proved to be effective.</p> <br/>Acta Physica Sinica. 1980 29(10): 1342-1346. Published 1980-05-05 APPLICATION OF THE ANOMALOUS SCATTERING EFFECT IN TREATING THE PROBLEM OF DOUBLE IMAGES RESULTING FROM PATTERSON ANALYSIS FAN HAI-FU, ZHENG QI-TAI, LI PENG-FEI 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1342-1346. article doi:10.7498/aps.29.1342 10.7498/aps.29.1342 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1342 1342-1346 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1347 Author(s): FAN HAI-FU, ZHENG QI-TAI <br/><p>Single crystals of 4-Bromowuweizichun B, C23H27O7Br, belong to the space group P212121 with four molecules per unit cell. Since both the Y and Z parameters of the bromine atom are close to 1/4, either the heavy atom method or the Patterson method would lead to a four-fold ambiguity for each light atom. Consequently the structure analysis could not proceed by the usual way. By making use of the method proposed by one of the authors, the ambiguity was easily resolved and the correct structure obtained.</p> <br/>Acta Physica Sinica. 1980 29(10): 1347-1350. Published 1980-05-05 Author(s): FAN HAI-FU, ZHENG QI-TAI <br/><p>Single crystals of 4-Bromowuweizichun B, C23H27O7Br, belong to the space group P212121 with four molecules per unit cell. Since both the Y and Z parameters of the bromine atom are close to 1/4, either the heavy atom method or the Patterson method would lead to a four-fold ambiguity for each light atom. Consequently the structure analysis could not proceed by the usual way. By making use of the method proposed by one of the authors, the ambiguity was easily resolved and the correct structure obtained.</p> <br/>Acta Physica Sinica. 1980 29(10): 1347-1350. Published 1980-05-05 ELIMINATION OF THE FOUR-FOLD AMBIGUITIES DUE TO THE ARRANGEMENT OF HEAVY ATOMS BY MAKING USE OF THE DIRECT METHOD FAN HAI-FU, ZHENG QI-TAI 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1347-1350. article doi:10.7498/aps.29.1347 10.7498/aps.29.1347 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1347 1347-1350 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1351 Author(s): HU JING-ZHU, TANG RU-MING, XU JI-AN <br/><p>Using the method of pressing the spring by worm and worm gear, the loading can be made continuous and stable and we can observe the process of phase transition of materials in the high pressure device of diamond anvil. The process of metallization phase transition of iodine and sulphur are observed clearly.</p> <br/>Acta Physica Sinica. 1980 29(10): 1351-1354. Published 1980-05-05 Author(s): HU JING-ZHU, TANG RU-MING, XU JI-AN <br/><p>Using the method of pressing the spring by worm and worm gear, the loading can be made continuous and stable and we can observe the process of phase transition of materials in the high pressure device of diamond anvil. The process of metallization phase transition of iodine and sulphur are observed clearly.</p> <br/>Acta Physica Sinica. 1980 29(10): 1351-1354. Published 1980-05-05 THE HIGH PRESSURE DEVICE OF DIAMOND ANVIL AND THE OBSERVATION OF PHASE TRANSITION OF IODINE AND SULPHUR HU JING-ZHU, TANG RU-MING, XU JI-AN 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1351-1354. article doi:10.7498/aps.29.1351 10.7498/aps.29.1351 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1351 1351-1354 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1355 Author(s): ZHENG WEI-MOU <br/><p>The electronic states in systems with reconstructed overlayers have been treated by Y. Muda and T. Hanawa. By means of a different method which is very effective for one-dimensional chain problems and through a simpler derivation the same results are obtained.</p> <br/>Acta Physica Sinica. 1980 29(10): 1355-1356. Published 1980-05-05 Author(s): ZHENG WEI-MOU <br/><p>The electronic states in systems with reconstructed overlayers have been treated by Y. Muda and T. Hanawa. By means of a different method which is very effective for one-dimensional chain problems and through a simpler derivation the same results are obtained.</p> <br/>Acta Physica Sinica. 1980 29(10): 1355-1356. Published 1980-05-05 ELECTRONIC STATES IN SYSTEMS WITH RECONSTRUCTED OVERLAYERS ZHENG WEI-MOU 1980-05-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1980 29(10): 1355-1356. article doi:10.7498/aps.29.1355 10.7498/aps.29.1355 Acta Physica Sinica 29 10 1980-05-05 //www.getgobooth.com/en/article/doi/10.7498/aps.29.1355 1355-1356

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