//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.33.285 Author(s): TAO SHI-QUAN, LING DE-HONG <br/><p>It is possible to construct a simple, compact spectrograph with a single off-axis hologra-fic lens which serves as dispersing and focucing element. In this paper, an optimum construction geometry is presented, the performance of this spectrograph is evaluated. Finally, the experimental results obtained from a prototype of such kind of spectrograph are given.</p> <br/>Acta Physica Sinica. 1984 33(3): 285-293. Published 2005-07-20 Author(s): TAO SHI-QUAN, LING DE-HONG <br/><p>It is possible to construct a simple, compact spectrograph with a single off-axis hologra-fic lens which serves as dispersing and focucing element. In this paper, an optimum construction geometry is presented, the performance of this spectrograph is evaluated. Finally, the experimental results obtained from a prototype of such kind of spectrograph are given.</p> <br/>Acta Physica Sinica. 1984 33(3): 285-293. Published 2005-07-20 SPECTROGRAPH WITH A HOLOGRAPHIC LENS AS DISPERSING/FOCUCING ELEMENT TAO SHI-QUAN, LING DE-HONG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 285-293. article doi:10.7498/aps.33.285 10.7498/aps.33.285 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.285 285-293 //www.getgobooth.com/en/article/doi/10.7498/aps.33.294 Author(s): WANG PEI, HOU BO-YUAN, HOU BO-YU, GUO HAN-YING <br/><p>In this paper, we show that the SO(3) chiral field can be regard as the normal Vector field over the pseudo-spherical surface, and thus obtain the correspondence between chiral field and sine-Gordon system, as well as the geometrical interpretation of chiral field. By means of the dual symmetry between chiral field and the pseudo-spherical surface, we are able to connect chiral field with s-G system, and express Backlund transformation, Riccati equation in the gauge invariant representations of the related properties of the same dynamical system in different frames.</p> <br/>Acta Physica Sinica. 1984 33(3): 294-301. Published 2005-07-20 Author(s): WANG PEI, HOU BO-YUAN, HOU BO-YU, GUO HAN-YING <br/><p>In this paper, we show that the SO(3) chiral field can be regard as the normal Vector field over the pseudo-spherical surface, and thus obtain the correspondence between chiral field and sine-Gordon system, as well as the geometrical interpretation of chiral field. By means of the dual symmetry between chiral field and the pseudo-spherical surface, we are able to connect chiral field with s-G system, and express Backlund transformation, Riccati equation in the gauge invariant representations of the related properties of the same dynamical system in different frames.</p> <br/>Acta Physica Sinica. 1984 33(3): 294-301. Published 2005-07-20 DUAL SYMMETRY OF CHIRAL MODEL AND GEOMETRICAL CORRESPONDENCE BETWEEN CHIRAL FIELD AND SINE-GORDON EQUATION WANG PEI, HOU BO-YUAN, HOU BO-YU, GUO HAN-YING 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 294-301. article doi:10.7498/aps.33.294 10.7498/aps.33.294 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.294 294-301 //www.getgobooth.com/en/article/doi/10.7498/aps.33.302 Author(s): LIN SHU-ZHI, HEI ZU-KUN <br/><p>The structures of electrodeposited alloy of nickelphosphorus system were investigated by means of X-ray diffraction, method. It is shown that the structures of those alloy are a solid solution of phosphorus in nickel while the contents of phosphorus are less than 5.4 at%. When the contents of phosphorus increase up to more than 7.8 at%, the structures of alloys suffer a tremendous change, the diffraction patterns of these alloys may be interpreted by a model of random-layer (turbostratic) structures. The distances between neighbouring layers are 2.04? and the diameter of the layers are 6-8?. The thickness of stacking of layers is decreased as the contentes of phosphorus in alloy are increased. For examples, it changes from 124? for 7.8 at% P to 13? for 18 at% P. The diffraction pattern of the later is just the same as that of the typical amorphous alloys.Using the data of the ratio of intensities of {lll} or the data of the radial distribution function, the rootmean-square of static distortion can be calculated as (u2)1/2=0.17?. This value can be used to interpret why an arbitrary displacement between two neighbouring layers would be possible even though the distance between neighbouring layers is smaller than the diameter of an atom. Because of the small dimension of the layers and the large static distortion of the atom, it is easy to change the orientation of layer domain and no cr-ystallographic boundary region are necessary for the variation of orientation, so that the specimens are the continue distribution of atoms as a whole bat not an aggregation of micro-crystals.The β{lll} corresponding to the breadth of {lll} reflection at half-maximum intensity have been measured for some specimens. The results show that βlll/β222222/cosθlll, where θ is the Bragg angle, this means there would be some other factors (for example, the component fluctuation), to affect the breadth of the reflection line, besides the size factor.</p> <br/>Acta Physica Sinica. 1984 33(3): 302-308. Published 2005-07-20 Author(s): LIN SHU-ZHI, HEI ZU-KUN <br/><p>The structures of electrodeposited alloy of nickelphosphorus system were investigated by means of X-ray diffraction, method. It is shown that the structures of those alloy are a solid solution of phosphorus in nickel while the contents of phosphorus are less than 5.4 at%. When the contents of phosphorus increase up to more than 7.8 at%, the structures of alloys suffer a tremendous change, the diffraction patterns of these alloys may be interpreted by a model of random-layer (turbostratic) structures. The distances between neighbouring layers are 2.04? and the diameter of the layers are 6-8?. The thickness of stacking of layers is decreased as the contentes of phosphorus in alloy are increased. For examples, it changes from 124? for 7.8 at% P to 13? for 18 at% P. The diffraction pattern of the later is just the same as that of the typical amorphous alloys.Using the data of the ratio of intensities of {lll} or the data of the radial distribution function, the rootmean-square of static distortion can be calculated as (u2)1/2=0.17?. This value can be used to interpret why an arbitrary displacement between two neighbouring layers would be possible even though the distance between neighbouring layers is smaller than the diameter of an atom. Because of the small dimension of the layers and the large static distortion of the atom, it is easy to change the orientation of layer domain and no cr-ystallographic boundary region are necessary for the variation of orientation, so that the specimens are the continue distribution of atoms as a whole bat not an aggregation of micro-crystals.The β{lll} corresponding to the breadth of {lll} reflection at half-maximum intensity have been measured for some specimens. The results show that βlll/β222222/cosθlll, where θ is the Bragg angle, this means there would be some other factors (for example, the component fluctuation), to affect the breadth of the reflection line, besides the size factor.</p> <br/>Acta Physica Sinica. 1984 33(3): 302-308. Published 2005-07-20 THE STRUCTURES OF ELECTRODEPOSITED ALLOY OF NICKEL-PHOSPHORUS SYSTEM LIN SHU-ZHI, HEI ZU-KUN 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 302-308. article doi:10.7498/aps.33.302 10.7498/aps.33.302 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.302 302-308 //www.getgobooth.com/en/article/doi/10.7498/aps.33.309 Author(s): ZHOU HAI-LIN <br/><p>The neoclassical scaling relations satisfying kenetic requirements are derived for a mul-ticomponent plasma in an axisymmetric toroidal magnetic configuration, using a model collision-operator and the variational principle developed by Rosenbluth and Glasser. On the basis of these scaling relations, explicit expressions for the neoclassical fluxes of the multi-component system are obtained in terms of the component parameters nj,mj,Zj and Tj. Finally, the dependence of the neoclassical transport coefficients on the aspect ratio R/r is discussed in detail.</p> <br/>Acta Physica Sinica. 1984 33(3): 309-320. Published 2005-07-20 Author(s): ZHOU HAI-LIN <br/><p>The neoclassical scaling relations satisfying kenetic requirements are derived for a mul-ticomponent plasma in an axisymmetric toroidal magnetic configuration, using a model collision-operator and the variational principle developed by Rosenbluth and Glasser. On the basis of these scaling relations, explicit expressions for the neoclassical fluxes of the multi-component system are obtained in terms of the component parameters nj,mj,Zj and Tj. Finally, the dependence of the neoclassical transport coefficients on the aspect ratio R/r is discussed in detail.</p> <br/>Acta Physica Sinica. 1984 33(3): 309-320. Published 2005-07-20 NEOCLASSICAL TRANSPORT THEORY OF A MULTICOMPONENT PLASMA ZHOU HAI-LIN 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 309-320. article doi:10.7498/aps.33.309 10.7498/aps.33.309 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.309 309-320 //www.getgobooth.com/en/article/doi/10.7498/aps.33.321 Author(s): ZHENG SHAO-BAI, WANG LONG <br/><p>A general stability condition against the horizontal and vertical displacements of a plasma column in tokamak and the change of its minor radius has been deduced, while the effect of the toroidal field and the interaction of the plasma column with the external circuits are taken into account, assuming circular minor crosssection of the plasma column and the ratio α/R&lt;&lt;1. In general, because of the effect of the strong field, the minor radius of the plasma column would change with the change of its major radius to maintain the conservation of the toroidal magnetic flux in the angular plasma current circuit. When the variations of the currents in external circuits are considered, the stability region for such displacement pertur-bance is wider than 0&lt;n&lt;3/2.</p> <br/>Acta Physica Sinica. 1984 33(3): 321-330. Published 2005-07-20 Author(s): ZHENG SHAO-BAI, WANG LONG <br/><p>A general stability condition against the horizontal and vertical displacements of a plasma column in tokamak and the change of its minor radius has been deduced, while the effect of the toroidal field and the interaction of the plasma column with the external circuits are taken into account, assuming circular minor crosssection of the plasma column and the ratio α/R&lt;&lt;1. In general, because of the effect of the strong field, the minor radius of the plasma column would change with the change of its major radius to maintain the conservation of the toroidal magnetic flux in the angular plasma current circuit. When the variations of the currents in external circuits are considered, the stability region for such displacement pertur-bance is wider than 0&lt;n&lt;3/2.</p> <br/>Acta Physica Sinica. 1984 33(3): 321-330. Published 2005-07-20 ON THE DISPLACEMENT STABILITIES OF A PLASMA COLUMN IN TOKAMAK ZHENG SHAO-BAI, WANG LONG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 321-330. article doi:10.7498/aps.33.321 10.7498/aps.33.321 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.321 321-330 //www.getgobooth.com/en/article/doi/10.7498/aps.33.331 Author(s): GU BIAO <br/><p>A nonlinear equation of the modified capacitor model has been solved by means of the Bogoliubov asymptotic method. Dawson only gave a wavebreaking condition which is not complete when it is applied to the inhomogeneous plasma. In this paper, the second wave-breaking condition has been added for completeness; thus the wavebreaking position and wavebreaking time can be uniquely determined simultaneously, and the formulas of the maximum energy of hot electrons and the localized electric field amplitude can also be obtained. The agreement between the theoretical predictions and the experimental results is very good, especially for the wavebreaking time and the maximum energy of the hot electrons.</p> <br/>Acta Physica Sinica. 1984 33(3): 331-340. Published 2005-07-20 Author(s): GU BIAO <br/><p>A nonlinear equation of the modified capacitor model has been solved by means of the Bogoliubov asymptotic method. Dawson only gave a wavebreaking condition which is not complete when it is applied to the inhomogeneous plasma. In this paper, the second wave-breaking condition has been added for completeness; thus the wavebreaking position and wavebreaking time can be uniquely determined simultaneously, and the formulas of the maximum energy of hot electrons and the localized electric field amplitude can also be obtained. The agreement between the theoretical predictions and the experimental results is very good, especially for the wavebreaking time and the maximum energy of the hot electrons.</p> <br/>Acta Physica Sinica. 1984 33(3): 331-340. Published 2005-07-20 COLD PLASMA WAVEBREAKING DUE TO RESONANCE ABSORPTION GU BIAO 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 331-340. article doi:10.7498/aps.33.331 10.7498/aps.33.331 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.331 331-340 //www.getgobooth.com/en/article/doi/10.7498/aps.33.341 Author(s): WANG YOU-QIN, CHEN SHI-GANG <br/><p>In this paper, we use numerical and analytical methods to discuss the following problems. (1) The first is the relation between Hausdorff dimension d and Lyapunov exponent λ. We point out that in the relation N(ε) there is a multi-scaling-region phenomena which shows the structure of the point set at different scale. To analyse this phenomena seriously is significant for calculating d. (2) Acorrding to the relation between the one-dimensional map and the Poincare map of dynamic system, and the discontinuity and multivalue property of d( λ ) of one-dimensional map at λ=0, we conjecture that the relation d(λ) at λ= (0,0,-) of the dynamical system is also discontinuous and multivalued. (3) On the base of relation d(λ), we use λ&lt;0 as a criterion to estimate the measure of chaotic solutions, of logistic model in chaotic region, on the axis of parameter. The result is mc= 0.893±0.022 (The total measure of chaotic region is normalized to unity).</p> <br/>Acta Physica Sinica. 1984 33(3): 341-351. Published 2005-07-20 Author(s): WANG YOU-QIN, CHEN SHI-GANG <br/><p>In this paper, we use numerical and analytical methods to discuss the following problems. (1) The first is the relation between Hausdorff dimension d and Lyapunov exponent λ. We point out that in the relation N(ε) there is a multi-scaling-region phenomena which shows the structure of the point set at different scale. To analyse this phenomena seriously is significant for calculating d. (2) Acorrding to the relation between the one-dimensional map and the Poincare map of dynamic system, and the discontinuity and multivalue property of d( λ ) of one-dimensional map at λ=0, we conjecture that the relation d(λ) at λ= (0,0,-) of the dynamical system is also discontinuous and multivalued. (3) On the base of relation d(λ), we use λ&lt;0 as a criterion to estimate the measure of chaotic solutions, of logistic model in chaotic region, on the axis of parameter. The result is mc= 0.893±0.022 (The total measure of chaotic region is normalized to unity).</p> <br/>Acta Physica Sinica. 1984 33(3): 341-351. Published 2005-07-20 METRIC PROPERTIES OF CHAOTIC REGION IN ONE-DIMENSIONAL MAPS WANG YOU-QIN, CHEN SHI-GANG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 341-351. article doi:10.7498/aps.33.341 10.7498/aps.33.341 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.341 341-351 //www.getgobooth.com/en/article/doi/10.7498/aps.33.352 Author(s): XIONG SHI-JIE, CAI JIAN-HUA <br/><p>Layered Ultrathin Coherent Structures (LUCS) made up of transition metals Nb and Ti exhibit peculiar electrical conduction properties, which reflect the energy band charateri-stics of these artificial superlattices such that there is a transition from metallic to semiconducting or semi-metallic properties with decreasing superlattice period. Owing to the supe-rlattice modulation, there are two catagories of electronic states in LUCS: extended states and strongly localized states in the direction of modulation. Electrons in these two kinds of states have very different effective masses along the modulation direction. We have considered separately the contributions of the two kinds of electronic states, and have obtained the resistivity and its temperature coefficient which show variations with the inverse superlattice period in accordance with measurements.</p> <br/>Acta Physica Sinica. 1984 33(3): 352-361. Published 2005-07-20 Author(s): XIONG SHI-JIE, CAI JIAN-HUA <br/><p>Layered Ultrathin Coherent Structures (LUCS) made up of transition metals Nb and Ti exhibit peculiar electrical conduction properties, which reflect the energy band charateri-stics of these artificial superlattices such that there is a transition from metallic to semiconducting or semi-metallic properties with decreasing superlattice period. Owing to the supe-rlattice modulation, there are two catagories of electronic states in LUCS: extended states and strongly localized states in the direction of modulation. Electrons in these two kinds of states have very different effective masses along the modulation direction. We have considered separately the contributions of the two kinds of electronic states, and have obtained the resistivity and its temperature coefficient which show variations with the inverse superlattice period in accordance with measurements.</p> <br/>Acta Physica Sinica. 1984 33(3): 352-361. Published 2005-07-20 ON THE ELECTRICAL CONDUCTION OF LUCS XIONG SHI-JIE, CAI JIAN-HUA 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 352-361. article doi:10.7498/aps.33.352 10.7498/aps.33.352 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.352 352-361 //www.getgobooth.com/en/article/doi/10.7498/aps.33.362 Author(s): TANG JING-CHANG, S. Y. TONG <br/><p>Using normal one beam model, an analytical formula of normal photoelectron diffraction (NPD) I-V curves is derived. For the system C(2×2) Se (3d)/Ni(001), NPD spectrum and phase shifts have been calculated. We find the "layer spacing modification" (LSM) from phase shifts. In the other hand, the LSM has been found by Fourier transformation of NPD spectrum. These two sets of LSM are shown to be very close to each other. Thus it is demonstrated that Fourier transformation of NPD spectrum could be used as an effective me-thod for surface structure determination.</p> <br/>Acta Physica Sinica. 1984 33(3): 362-369. Published 2005-07-20 Author(s): TANG JING-CHANG, S. Y. TONG <br/><p>Using normal one beam model, an analytical formula of normal photoelectron diffraction (NPD) I-V curves is derived. For the system C(2×2) Se (3d)/Ni(001), NPD spectrum and phase shifts have been calculated. We find the "layer spacing modification" (LSM) from phase shifts. In the other hand, the LSM has been found by Fourier transformation of NPD spectrum. These two sets of LSM are shown to be very close to each other. Thus it is demonstrated that Fourier transformation of NPD spectrum could be used as an effective me-thod for surface structure determination.</p> <br/>Acta Physica Sinica. 1984 33(3): 362-369. Published 2005-07-20 NORMAL ONE BEAM MODEL FOR FOURIER TRANSFORM ANALYSIS METHOD OF PHOTOELECTRON DIFFRACTION SPECTRUM TANG JING-CHANG, S. Y. TONG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 362-369. article doi:10.7498/aps.33.362 10.7498/aps.33.362 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.362 362-369 //www.getgobooth.com/en/article/doi/10.7498/aps.33.370 Author(s): XUE FANG-SHI <br/><p>An empirically adjusted zone-variational method for energy band calculations is presented in this paper. The potential outside the sphere is adjusted empirically to make the resulted energy band closer to experimental results. This method has been used to compute the energy bands of Si and Ge. The results agree with the experimental ones very well. In accordance with the special feature of using differen methods to solve the Schrodinger equation in different potential regions, a new computational model for alloy band is also suggested. By using the same adjusting parameters, the energy band of Si-Ge alloy is computed, which is superior to the OPW result. Thus it can be seen that the zone-variational method is an effective and prospective computational method in band theory and has considerable wide application.</p> <br/>Acta Physica Sinica. 1984 33(3): 370-376. Published 2005-07-20 Author(s): XUE FANG-SHI <br/><p>An empirically adjusted zone-variational method for energy band calculations is presented in this paper. The potential outside the sphere is adjusted empirically to make the resulted energy band closer to experimental results. This method has been used to compute the energy bands of Si and Ge. The results agree with the experimental ones very well. In accordance with the special feature of using differen methods to solve the Schrodinger equation in different potential regions, a new computational model for alloy band is also suggested. By using the same adjusting parameters, the energy band of Si-Ge alloy is computed, which is superior to the OPW result. Thus it can be seen that the zone-variational method is an effective and prospective computational method in band theory and has considerable wide application.</p> <br/>Acta Physica Sinica. 1984 33(3): 370-376. Published 2005-07-20 EMPIRICALLY ADJUSTED ZONE-VARIATIONAL METHOD FOR BAND CALCULATIONS XUE FANG-SHI 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 370-376. article doi:10.7498/aps.33.370 10.7498/aps.33.370 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.370 370-376 //www.getgobooth.com/en/article/doi/10.7498/aps.33.377 Author(s): YAO XIU-CHEN, QIN GUO-GANG, ZENG SHU-RONG, YUAN MIN-HUA <br/><p>Using the method of transient capacitance at constant temperature, the shift of gold acceptor energy level in silicon under 〈100〉,〈110〉,〈111〉 uniaxial press has been studied. Considering the split of conduction band caused by uniaxial stress, a formula for electron emission rate from deep center to conduction band has been derived. With this formula and experimental data of emission rate and reported tangential deformation potential constant Ξu ,the active energy of gold acceptor under various uniaxial stress has been determined. In the range of experimental stress (0-9 kbar), a linear dependence of active energy on stress has been found. When uniaxial presses are parallel to 〈110〉,〈111〉 crystal orientations, the proportionality constants are α=-3.2±0.6 meV/kbar, α=-0.3±0.6 meV/kbar respectively. When uniaxial press is parallel to 〈100〉 crystal orientation and if we take Ξu = 9.2 eV, α= -5.8± 0.8 meV/kbar, or if Ξu =11.4 eV, α=-5.3± 0.8 meV/kbar. The changes of active energy are strongly anis-otropic. Further more, we have determined the shift coefficients of gold acceptor level in the presence of uniaxial stress relative to the bottom of conduction band in the absence of uniaxial stress. When Ξu=9.2 eV, the coefficients are S=-1.3±0.8 meV/kbar, S=0.7±0.6 meV/kbar, S=-0.7±0.6 meV/kbar respectively, when Ξu=11.4 eV, the values are S= - 3.5± 0.8 meV/kbar, S = 0.0±0.6 meV/kbar, S=- 1.0±0.6 meV/kbar. Deviations among three coefficients of each group are larger than uncertainty of experiments. Thus, the possibility that gold centers in silicon have cubic symmetry and at the same time both negatively charged and neutral gold centers have nondegenerate basic states is quite small.</p> <br/>Acta Physica Sinica. 1984 33(3): 377-390. Published 2005-07-20 Author(s): YAO XIU-CHEN, QIN GUO-GANG, ZENG SHU-RONG, YUAN MIN-HUA <br/><p>Using the method of transient capacitance at constant temperature, the shift of gold acceptor energy level in silicon under 〈100〉,〈110〉,〈111〉 uniaxial press has been studied. Considering the split of conduction band caused by uniaxial stress, a formula for electron emission rate from deep center to conduction band has been derived. With this formula and experimental data of emission rate and reported tangential deformation potential constant Ξu ,the active energy of gold acceptor under various uniaxial stress has been determined. In the range of experimental stress (0-9 kbar), a linear dependence of active energy on stress has been found. When uniaxial presses are parallel to 〈110〉,〈111〉 crystal orientations, the proportionality constants are α=-3.2±0.6 meV/kbar, α=-0.3±0.6 meV/kbar respectively. When uniaxial press is parallel to 〈100〉 crystal orientation and if we take Ξu = 9.2 eV, α= -5.8± 0.8 meV/kbar, or if Ξu =11.4 eV, α=-5.3± 0.8 meV/kbar. The changes of active energy are strongly anis-otropic. Further more, we have determined the shift coefficients of gold acceptor level in the presence of uniaxial stress relative to the bottom of conduction band in the absence of uniaxial stress. When Ξu=9.2 eV, the coefficients are S=-1.3±0.8 meV/kbar, S=0.7±0.6 meV/kbar, S=-0.7±0.6 meV/kbar respectively, when Ξu=11.4 eV, the values are S= - 3.5± 0.8 meV/kbar, S = 0.0±0.6 meV/kbar, S=- 1.0±0.6 meV/kbar. Deviations among three coefficients of each group are larger than uncertainty of experiments. Thus, the possibility that gold centers in silicon have cubic symmetry and at the same time both negatively charged and neutral gold centers have nondegenerate basic states is quite small.</p> <br/>Acta Physica Sinica. 1984 33(3): 377-390. Published 2005-07-20 A STUDY OF TRANSIENT CAPACITANCE OF GOLD ACCEPTOR ENERGY LEVEL IN SILICON UNDER UNIAXIAL STRESS YAO XIU-CHEN, QIN GUO-GANG, ZENG SHU-RONG, YUAN MIN-HUA 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 377-390. article doi:10.7498/aps.33.377 10.7498/aps.33.377 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.377 377-390 //www.getgobooth.com/en/article/doi/10.7498/aps.33.391 Author(s): ZHANG HAN-QING <br/><p>The crystal of ammonium bicarbonate belongs to orthorhombic system with symmetry 3L2 3PC. They exist in three forms: prismatic, slaty or particle shape. The crystals appear colorless to white or light grey, transparent to semitransparent. The cleavage parallel to (110) is perfect. Hardness H=1.55. Density D= 1.573 g/cm3. They are biaxial negative crystals, with Ng=c= 1.5540, Nm = b = 1.5355, Np =α=1.4220; 2V=40°56′. γ=v is weak. On the curves of DTA, there is a big and wide endothermic peak (between 50-150℃ ). The curves of TGA showed a continuous weight-loss. On the infrared absorption spectra, there are two strong peaks (3330-3030, 1430-1380), corresponding to the stretching and bending of the ions NH4+. And there are two less strong peaks (2850, 2550), corresponding to the stretching and bending of the anions HCO3-. The unit cell dimensions are α = 7.220(1)?, b=10.672(l)?,c = 8.719(2)?, v = 671.927(3)?3. There are eight moloculs in the unit cell and the space group is Pccn. Dx =1.5215. In the structure, the HCO3- anion groups are connected by hydrogen bonds to form chains parallel to c axes. The NH4+ ione groups constitute tetrahedrons connected by four chains of the HCO3- anions. In the crystal, there are two form of hydrogen bonds, namely O-H…O and N-H…O.The framework exists as huge and complicated network of hydrogen bonds. It is obvious that the physical and chemical properties of the crystal are influenced greatly.</p> <br/>Acta Physica Sinica. 1984 33(3): 391-398. Published 2005-07-20 Author(s): ZHANG HAN-QING <br/><p>The crystal of ammonium bicarbonate belongs to orthorhombic system with symmetry 3L2 3PC. They exist in three forms: prismatic, slaty or particle shape. The crystals appear colorless to white or light grey, transparent to semitransparent. The cleavage parallel to (110) is perfect. Hardness H=1.55. Density D= 1.573 g/cm3. They are biaxial negative crystals, with Ng=c= 1.5540, Nm = b = 1.5355, Np =α=1.4220; 2V=40°56′. γ=v is weak. On the curves of DTA, there is a big and wide endothermic peak (between 50-150℃ ). The curves of TGA showed a continuous weight-loss. On the infrared absorption spectra, there are two strong peaks (3330-3030, 1430-1380), corresponding to the stretching and bending of the ions NH4+. And there are two less strong peaks (2850, 2550), corresponding to the stretching and bending of the anions HCO3-. The unit cell dimensions are α = 7.220(1)?, b=10.672(l)?,c = 8.719(2)?, v = 671.927(3)?3. There are eight moloculs in the unit cell and the space group is Pccn. Dx =1.5215. In the structure, the HCO3- anion groups are connected by hydrogen bonds to form chains parallel to c axes. The NH4+ ione groups constitute tetrahedrons connected by four chains of the HCO3- anions. In the crystal, there are two form of hydrogen bonds, namely O-H…O and N-H…O.The framework exists as huge and complicated network of hydrogen bonds. It is obvious that the physical and chemical properties of the crystal are influenced greatly.</p> <br/>Acta Physica Sinica. 1984 33(3): 391-398. Published 2005-07-20 RELATIONS BETWEEN CRYSTALLOGRAPHIC CHARACTERISTICS AND CRYSTAL STRUCTURE AND THE PROPERTIES FOR AMMONIUM BICARBONATE ZHANG HAN-QING 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 391-398. article doi:10.7498/aps.33.391 10.7498/aps.33.391 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.391 391-398 //www.getgobooth.com/en/article/doi/10.7498/aps.33.399 Author(s): FAN HAI-FU <br/><p>Various kinds of enantiomorphic phase ambiguities and their generalized form in crystal structure determination are discussed. A modified component relation is given together with the associated probability formula. Using the modified component relation, it is possible to treat all kinds of the enantiomorphic phase ambiguities with a unified manner. Problems concerning the application to protein structures are also discussed.</p> <br/>Acta Physica Sinica. 1984 33(3): 399-407. Published 2005-07-20 Author(s): FAN HAI-FU <br/><p>Various kinds of enantiomorphic phase ambiguities and their generalized form in crystal structure determination are discussed. A modified component relation is given together with the associated probability formula. Using the modified component relation, it is possible to treat all kinds of the enantiomorphic phase ambiguities with a unified manner. Problems concerning the application to protein structures are also discussed.</p> <br/>Acta Physica Sinica. 1984 33(3): 399-407. Published 2005-07-20 ENANTIOMORPHIC PHASE AMBIGUITIES AND THE MODIFIED COMPONENT RELATION——THE APPLICATION OF DIRECT METHODS TO PROTEIN STRUCTURES FAN HAI-FU 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 399-407. article doi:10.7498/aps.33.399 10.7498/aps.33.399 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.399 399-407 //www.getgobooth.com/en/article/doi/10.7498/aps.33.408 Author(s): HEI ZU-KUN, LIN SHU-ZHI <br/><p>It is shown that the intersection points of two RDF/r curves obtained from transformation of the interference functions with a little different attenuation should fall on the line -4πrρ0.This method has been used to determine the normalization factor and compared with other methods. It was shown that the accuracy of this method was about 1 %, higher than that of others.</p> <br/>Acta Physica Sinica. 1984 33(3): 408-412. Published 2005-07-20 Author(s): HEI ZU-KUN, LIN SHU-ZHI <br/><p>It is shown that the intersection points of two RDF/r curves obtained from transformation of the interference functions with a little different attenuation should fall on the line -4πrρ0.This method has been used to determine the normalization factor and compared with other methods. It was shown that the accuracy of this method was about 1 %, higher than that of others.</p> <br/>Acta Physica Sinica. 1984 33(3): 408-412. Published 2005-07-20 A NEW METHOD FOR NORMALIZATION OF DIFFRACTION DATA FROM AMORPHUS MATERIALS HEI ZU-KUN, LIN SHU-ZHI 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 408-412. article doi:10.7498/aps.33.408 10.7498/aps.33.408 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.408 408-412 //www.getgobooth.com/en/article/doi/10.7498/aps.33.413 Author(s): JIN DUO, MA MING-RONG, LIU ZHI-YI, NI YONG-MING, JIN ZUO-WEN, LUO QI-GUANG <br/><p>The specific heats of Ti-Pd alloys have been measured between 1-6 K, and the electronic specific heat coefficients γ of samples Ti0.92Pd0.08 and Ti0.8Pd0.2 are found to be 5.89 mJ/mol·K2 and 4.78mJ/mol·K2 respectively, which are obviously higher than 3.32mJ/mol·K2 of pure Ti. Therefore, the densities of states at Fermi surface for these alloys are higher than that of pure Ti, this is the reason why the alloys have much higher superconductive transition temperature Tc than pure Ti.</p> <br/>Acta Physica Sinica. 1984 33(3): 413-418. Published 2005-07-20 Author(s): JIN DUO, MA MING-RONG, LIU ZHI-YI, NI YONG-MING, JIN ZUO-WEN, LUO QI-GUANG <br/><p>The specific heats of Ti-Pd alloys have been measured between 1-6 K, and the electronic specific heat coefficients γ of samples Ti0.92Pd0.08 and Ti0.8Pd0.2 are found to be 5.89 mJ/mol·K2 and 4.78mJ/mol·K2 respectively, which are obviously higher than 3.32mJ/mol·K2 of pure Ti. Therefore, the densities of states at Fermi surface for these alloys are higher than that of pure Ti, this is the reason why the alloys have much higher superconductive transition temperature Tc than pure Ti.</p> <br/>Acta Physica Sinica. 1984 33(3): 413-418. Published 2005-07-20 SPECIFIC HEAT MEASUREMENT FOR Ti-Pd ALLOYS JIN DUO, MA MING-RONG, LIU ZHI-YI, NI YONG-MING, JIN ZUO-WEN, LUO QI-GUANG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 413-418. article doi:10.7498/aps.33.413 10.7498/aps.33.413 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.413 413-418 //www.getgobooth.com/en/article/doi/10.7498/aps.33.419 Author(s): WU ZI-QIN, DUAN JIAN-ZHONG <br/><p>The backscattering factors in quantitative analysis in AES have been calculated using the "full diffusion" model which had been modified and simplified by us. Our results are quite close to the results obtained by Shimizu et al. using the complex Monte Carlo simulation, and better than the Reuter's empirical equation and Love's regression equation based on the simple Monte Carlo simulation. Our calculation are so simple that it can be applied easily in various experimental conditions without inter polation and extrapolation as used by Shimizu et al.</p> <br/>Acta Physica Sinica. 1984 33(3): 419-424. Published 2005-07-20 Author(s): WU ZI-QIN, DUAN JIAN-ZHONG <br/><p>The backscattering factors in quantitative analysis in AES have been calculated using the "full diffusion" model which had been modified and simplified by us. Our results are quite close to the results obtained by Shimizu et al. using the complex Monte Carlo simulation, and better than the Reuter's empirical equation and Love's regression equation based on the simple Monte Carlo simulation. Our calculation are so simple that it can be applied easily in various experimental conditions without inter polation and extrapolation as used by Shimizu et al.</p> <br/>Acta Physica Sinica. 1984 33(3): 419-424. Published 2005-07-20 THE CALCULATION OF BACKSCATTERING FACTORS IN AUGER ELECTRON SPECTROSCOPY WU ZI-QIN, DUAN JIAN-ZHONG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 419-424. article doi:10.7498/aps.33.419 10.7498/aps.33.419 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.419 419-424 //www.getgobooth.com/en/article/doi/10.7498/aps.33.425 Author(s): YAN QI-WEI <br/><p>The crystal structure of KLiSO4 has been determined by neutron deffraction at room temperature. The position z/c of Li atom is in agreement (the difference is smaller than 1%) with previous X-ray study.</p> <br/>Acta Physica Sinica. 1984 33(3): 425-427. Published 2005-07-20 Author(s): YAN QI-WEI <br/><p>The crystal structure of KLiSO4 has been determined by neutron deffraction at room temperature. The position z/c of Li atom is in agreement (the difference is smaller than 1%) with previous X-ray study.</p> <br/>Acta Physica Sinica. 1984 33(3): 425-427. Published 2005-07-20 THE CRYSTAL STRUCTURE ANALYSIS OF KLiSO4 WITH NEUTRON DEFFRACTION AT ROOM TEMPERATURE YAN QI-WEI 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 425-427. article doi:10.7498/aps.33.425 10.7498/aps.33.425 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.425 425-427 //www.getgobooth.com/en/article/doi/10.7498/aps.33.428 Author(s): CHEN ZHENG-HAO, CUI DA-FU, Lü HUI-BIN, ZHOU YUE-LIANG <br/><p>Using a tunable TEA CO2 Laser and grating Coupling at the interface of GaAs-Al, we have obtained, for the first time, the output of the resonantly excited infrared surface pola-riton second harmonic. The charateristics of the surface second harmonic have been investigated, The agreement between theory and experiment is good.</p> <br/>Acta Physica Sinica. 1984 33(3): 428-433. Published 2005-07-20 Author(s): CHEN ZHENG-HAO, CUI DA-FU, Lü HUI-BIN, ZHOU YUE-LIANG <br/><p>Using a tunable TEA CO2 Laser and grating Coupling at the interface of GaAs-Al, we have obtained, for the first time, the output of the resonantly excited infrared surface pola-riton second harmonic. The charateristics of the surface second harmonic have been investigated, The agreement between theory and experiment is good.</p> <br/>Acta Physica Sinica. 1984 33(3): 428-433. Published 2005-07-20 THE GENERATION AND THE CHARACTERISTICS OF INFRARED SURFACE SECOND HARMONIC AT THE GaAs-Al INTERFACE CHEN ZHENG-HAO, CUI DA-FU, Lü HUI-BIN, ZHOU YUE-LIANG 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 428-433. article doi:10.7498/aps.33.428 10.7498/aps.33.428 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.428 428-433 //www.getgobooth.com/en/article/doi/10.7498/aps.33.434 Author(s): WANG BEN-REN, MIAO GUO-QING, WEI RONG-JUE <br/><p>The phenomenon of subharmonic bifurcation is observed in experiments of sound wave of finite amplitude, which are performed in liquid nitrogen and water, respectively. The power spectrum is obtained.</p> <br/>Acta Physica Sinica. 1984 33(3): 434-436. Published 2005-07-20 Author(s): WANG BEN-REN, MIAO GUO-QING, WEI RONG-JUE <br/><p>The phenomenon of subharmonic bifurcation is observed in experiments of sound wave of finite amplitude, which are performed in liquid nitrogen and water, respectively. The power spectrum is obtained.</p> <br/>Acta Physica Sinica. 1984 33(3): 434-436. Published 2005-07-20 EXPERIMENTAL OBSERVATION OF SUBHARMONIC IN LIQUID NITROGEN AND WATER WANG BEN-REN, MIAO GUO-QING, WEI RONG-JUE 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 434-436. article doi:10.7498/aps.33.434 10.7498/aps.33.434 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.434 434-436 //www.getgobooth.com/en/article/doi/10.7498/aps.33.437 Author(s): WANG GUANG-RUI, CHEN SHI-GANG, HAO BAI-LIN <br/><p>The convergence of box-counting algorithm for computing the capacity of strange attrac-tors is affected by the discretization procedure, because the period of the difference equations differs from that of the original ODE'S and, in addition, a damping factor appears. Simply decreasing the time-steps in the integration scheme not only costs more computer time, but also may deprive the convergence at all. The nonconvergence problem can be overcome by choosing at first a correct sampling interval. We give numerical evidence for what said above on the example of the periodically forced Brusselator.</p> <br/>Acta Physica Sinica. 1984 33(3): 437-440. Published 2005-07-20 Author(s): WANG GUANG-RUI, CHEN SHI-GANG, HAO BAI-LIN <br/><p>The convergence of box-counting algorithm for computing the capacity of strange attrac-tors is affected by the discretization procedure, because the period of the difference equations differs from that of the original ODE'S and, in addition, a damping factor appears. Simply decreasing the time-steps in the integration scheme not only costs more computer time, but also may deprive the convergence at all. The nonconvergence problem can be overcome by choosing at first a correct sampling interval. We give numerical evidence for what said above on the example of the periodically forced Brusselator.</p> <br/>Acta Physica Sinica. 1984 33(3): 437-440. Published 2005-07-20 ON THE NONCONVERGENCE PROBLEM IN COMPUTING THE CAPACITY OF STRANGE ATTRACTORS WANG GUANG-RUI, CHEN SHI-GANG, HAO BAI-LIN 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 437-440. article doi:10.7498/aps.33.437 10.7498/aps.33.437 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.437 437-440 //www.getgobooth.com/en/article/doi/10.7498/aps.33.441 Author(s): QING CHENG-RUI, HE ZUO-XIU, ZHAO WEI-QIN <br/><p>It is shown that the 40Ca20 is unstable against the process 40Ca20+2e- → 40Ar18hh=2vc, its half lifetime is about 1.2×1033 yr.</p> <br/>Acta Physica Sinica. 1984 33(3): 441-443. Published 2005-07-20 Author(s): QING CHENG-RUI, HE ZUO-XIU, ZHAO WEI-QIN <br/><p>It is shown that the 40Ca20 is unstable against the process 40Ca20+2e- → 40Ar18hh=2vc, its half lifetime is about 1.2×1033 yr.</p> <br/>Acta Physica Sinica. 1984 33(3): 441-443. Published 2005-07-20 IS 40Ca20 A STABLE ISOTOPE? QING CHENG-RUI, HE ZUO-XIU, ZHAO WEI-QIN 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 441-443. article doi:10.7498/aps.33.441 10.7498/aps.33.441 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.441 441-443 //www.getgobooth.com/en/article/doi/10.7498/aps.33.444 Author(s): MA HONG-RU, CAI JIAN-HUA <br/><p>We study here, in terms of a simple model, the spin waves, magnetic phases, and respo-nces to alternating fields of magnetic metallic superlatticcs.</p> <br/>Acta Physica Sinica. 1984 33(3): 444-446. Published 2005-07-20 Author(s): MA HONG-RU, CAI JIAN-HUA <br/><p>We study here, in terms of a simple model, the spin waves, magnetic phases, and respo-nces to alternating fields of magnetic metallic superlatticcs.</p> <br/>Acta Physica Sinica. 1984 33(3): 444-446. Published 2005-07-20 SPIN WAVES IN MAGNETIC METALLIC SUPERLATTICES MA HONG-RU, CAI JIAN-HUA 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 444-446. article doi:10.7498/aps.33.444 10.7498/aps.33.444 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.444 444-446 //www.getgobooth.com/en/article/doi/10.7498/aps.33.447 Author(s): XIONG SHI-JIE, CAI JIAN-HUA <br/><p>On the basis of the explanation of the supermodulus effect given in a previous paper we discuss further the criterions for the appearance of this effect in compositionally modulated alloys. The results are in accord with all the existing experimental facts.</p> <br/>Acta Physica Sinica. 1984 33(3): 447-448. Published 2005-07-20 Author(s): XIONG SHI-JIE, CAI JIAN-HUA <br/><p>On the basis of the explanation of the supermodulus effect given in a previous paper we discuss further the criterions for the appearance of this effect in compositionally modulated alloys. The results are in accord with all the existing experimental facts.</p> <br/>Acta Physica Sinica. 1984 33(3): 447-448. Published 2005-07-20 FURTHER REMARKS ON THE SUPERMODULUS EFFECT XIONG SHI-JIE, CAI JIAN-HUA 2005-07-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(3): 447-448. article doi:10.7498/aps.33.447 10.7498/aps.33.447 Acta Physica Sinica 33 3 2005-07-20 //www.getgobooth.com/en/article/doi/10.7498/aps.33.447 447-448

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