//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:37 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:37 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.41.697 Author(s): LIU QUAN-HUI <br/><p>When a quantum system with continuous spectrum has a definite anergy, ordinary quantum mechanics uses a single continuous stationary state to describe its properties, the expectation values for arbitrary physical quantities are therefore either infinity or zero. In this paper we point out in the form of mathematical theorem that the system possesses new and deterministic results with evident physical meanings. Classical results for the system are the classical limit cases of these results, and the ordinarv expectation values are the statistical cases of our results.</p> <br/>Acta Physica Sinica. 1992 41(5): 697-703. Published 2005-07-03 Author(s): LIU QUAN-HUI <br/><p>When a quantum system with continuous spectrum has a definite anergy, ordinary quantum mechanics uses a single continuous stationary state to describe its properties, the expectation values for arbitrary physical quantities are therefore either infinity or zero. In this paper we point out in the form of mathematical theorem that the system possesses new and deterministic results with evident physical meanings. Classical results for the system are the classical limit cases of these results, and the ordinarv expectation values are the statistical cases of our results.</p> <br/>Acta Physica Sinica. 1992 41(5): 697-703. Published 2005-07-03 DETERMINISTIC PROPERTIES CONTAINED IN QUANTUM SYSTEMS WITH CONTINUOUS SPECTRUM LIU QUAN-HUI 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 697-703. article doi:10.7498/aps.41.697 10.7498/aps.41.697 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.697 697-703 //www.getgobooth.com/en/article/doi/10.7498/aps.41.704 Author(s): DING E-JIANG, Lü YAM-NAN <br/><p>It is shown analytically as well as numerically that a periodic window of the coupled map system exists only for very weak coupling strength (about 10-3 for period 3 window, for instance), which could be defined as the depth of the window. Within the windows the behavior of the coupled map system could be recovered by dealing with a few number of modes, which consist of coupled three maps. The first Lyapunov exponent for the coupled map system shows a "zigzag" curve form virsus the coupling strength.</p> <br/>Acta Physica Sinica. 1992 41(5): 704-709. Published 2005-07-03 Author(s): DING E-JIANG, Lü YAM-NAN <br/><p>It is shown analytically as well as numerically that a periodic window of the coupled map system exists only for very weak coupling strength (about 10-3 for period 3 window, for instance), which could be defined as the depth of the window. Within the windows the behavior of the coupled map system could be recovered by dealing with a few number of modes, which consist of coupled three maps. The first Lyapunov exponent for the coupled map system shows a "zigzag" curve form virsus the coupling strength.</p> <br/>Acta Physica Sinica. 1992 41(5): 704-709. Published 2005-07-03 BEHAVIOR OF A WEAK COUPLED MAP SYSTEM IN THE PERIODIC WINDOWS DING E-JIANG, Lü YAM-NAN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 704-709. article doi:10.7498/aps.41.704 10.7498/aps.41.704 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.704 704-709 //www.getgobooth.com/en/article/doi/10.7498/aps.41.710 Author(s): LI ZI-PING <br/><p>We have derived the generalized Noether's first theorem in canonical formalism for field theory with singular Lagrangian and generalized Noether's identities in canonical formalism for variant Lagrangian. The application to the Dirac's constraint theory was discussed. We point out that some variance system may has a Dirac constraint. A counter-example to a conjecture of Dirac was given which indicates that Dirac's conjecture is invalid in this example. The application of generalized Noether's identities to the chromodynamics is also discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 710-719. Published 2005-07-03 Author(s): LI ZI-PING <br/><p>We have derived the generalized Noether's first theorem in canonical formalism for field theory with singular Lagrangian and generalized Noether's identities in canonical formalism for variant Lagrangian. The application to the Dirac's constraint theory was discussed. We point out that some variance system may has a Dirac constraint. A counter-example to a conjecture of Dirac was given which indicates that Dirac's conjecture is invalid in this example. The application of generalized Noether's identities to the chromodynamics is also discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 710-719. Published 2005-07-03 SYMMETRY IN CANONICAL FORMALISM OF CONSTRAINED SYSTEM LI ZI-PING 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 710-719. article doi:10.7498/aps.41.710 10.7498/aps.41.710 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.710 710-719 //www.getgobooth.com/en/article/doi/10.7498/aps.41.720 Author(s): REN ZHONG-ZHOU, XU GONG-OU <br/><p>Assuming that the 11Li, 14Be and 17B nuclei are composed of the core and two outer neutrons, we have investigated the giant dipole mode of these nuclei by sum rule approach. The excitation energy and the strength of the soft dipole mode are calculated and compared with other theoretical results.</p> <br/>Acta Physica Sinica. 1992 41(5): 720-725. Published 2005-07-03 Author(s): REN ZHONG-ZHOU, XU GONG-OU <br/><p>Assuming that the 11Li, 14Be and 17B nuclei are composed of the core and two outer neutrons, we have investigated the giant dipole mode of these nuclei by sum rule approach. The excitation energy and the strength of the soft dipole mode are calculated and compared with other theoretical results.</p> <br/>Acta Physica Sinica. 1992 41(5): 720-725. Published 2005-07-03 SOFT DIPOLE MODE OF 11Li, 14Be AND 17B NUCLEI REN ZHONG-ZHOU, XU GONG-OU 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 720-725. article doi:10.7498/aps.41.720 10.7498/aps.41.720 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.720 720-725 //www.getgobooth.com/en/article/doi/10.7498/aps.41.726 Author(s): WANG WAN-JUE <br/><p>In this paper, by using extended average level (MCDF-EAL) model of relativistic multi-configuration Dirac-Fock code, we have calculated 44 fine-structure energy levels of 2s2p3,2s2p4,2p5,2s22p23s,2s22p23p configurations and 24 transition wavelength of 3s-3p configuration of N-like KXIII; CaXIV, ScXVVV and TiXVI ions which may be the candidates for lasing acton. The calculated values of 3s, 3p configuration of KXIII, CaXIV and ScXV are our present results.</p> <br/>Acta Physica Sinica. 1992 41(5): 726-731. Published 2005-07-03 Author(s): WANG WAN-JUE <br/><p>In this paper, by using extended average level (MCDF-EAL) model of relativistic multi-configuration Dirac-Fock code, we have calculated 44 fine-structure energy levels of 2s2p3,2s2p4,2p5,2s22p23s,2s22p23p configurations and 24 transition wavelength of 3s-3p configuration of N-like KXIII; CaXIV, ScXVVV and TiXVI ions which may be the candidates for lasing acton. The calculated values of 3s, 3p configuration of KXIII, CaXIV and ScXV are our present results.</p> <br/>Acta Physica Sinica. 1992 41(5): 726-731. Published 2005-07-03 RELATIVISTIC MULTICONFIGURATION DIRAC-FOCK CALCULATION OF FINE-STRUCTURE ENERGY LEVELS AND TRANSITION WAVELENGTHS FOR N-LIKE KXIII, CaXIV, ScXV AND TiXVI WANG WAN-JUE 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 726-731. article doi:10.7498/aps.41.726 10.7498/aps.41.726 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.726 726-731 //www.getgobooth.com/en/article/doi/10.7498/aps.41.732 Author(s): SHEN JUN-FENG, XU YUN-FEI, WU BI-RU, ZHENG YOU-FENG, LU JIE, WANG YUN-XIAN <br/><p>The autoionization spectra of Yb have been observed and studied by three-step Laser excitation. Sixteen autoionization levels of Yb in the energy range from 50443 cm-1 to 57750 cm-1 have been investigated. The total angular momentums J of two autoionization levels were determined by a polarization technique.</p> <br/>Acta Physica Sinica. 1992 41(5): 732-739. Published 2005-07-03 Author(s): SHEN JUN-FENG, XU YUN-FEI, WU BI-RU, ZHENG YOU-FENG, LU JIE, WANG YUN-XIAN <br/><p>The autoionization spectra of Yb have been observed and studied by three-step Laser excitation. Sixteen autoionization levels of Yb in the energy range from 50443 cm-1 to 57750 cm-1 have been investigated. The total angular momentums J of two autoionization levels were determined by a polarization technique.</p> <br/>Acta Physica Sinica. 1992 41(5): 732-739. Published 2005-07-03 THE AUTOIONIZAT10N SPECTRA OF NEUTRAL YTTERBIUM BY LASER THREE-STEP EXCITATION SHEN JUN-FENG, XU YUN-FEI, WU BI-RU, ZHENG YOU-FENG, LU JIE, WANG YUN-XIAN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 732-739. article doi:10.7498/aps.41.732 10.7498/aps.41.732 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.732 732-739 //www.getgobooth.com/en/article/doi/10.7498/aps.41.740 Author(s): ZHANG LI-MIN, WEI XUN-BIN, XIA YU-XING, ZHANG YUN-SHENG, GENG YU-ZHEN, WANG HUI <br/><p>Excited by Ar+ laser lines of 457.9, 476.5,496.5, 514.5nm, the 650-760nm diffuse emission of A2Π-X2Σ lor Van der Waal's molecular LiAr has been observed in a lithium heat-pipe oven with Ar gas. The dynamics of this emission is discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 740-743. Published 2005-07-03 Author(s): ZHANG LI-MIN, WEI XUN-BIN, XIA YU-XING, ZHANG YUN-SHENG, GENG YU-ZHEN, WANG HUI <br/><p>Excited by Ar+ laser lines of 457.9, 476.5,496.5, 514.5nm, the 650-760nm diffuse emission of A2Π-X2Σ lor Van der Waal's molecular LiAr has been observed in a lithium heat-pipe oven with Ar gas. The dynamics of this emission is discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 740-743. Published 2005-07-03 LiAr A2Π-X2Σ DIFFUSE EMISSION EXCITED BY Ar+ LASER LINES ZHANG LI-MIN, WEI XUN-BIN, XIA YU-XING, ZHANG YUN-SHENG, GENG YU-ZHEN, WANG HUI 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 740-743. article doi:10.7498/aps.41.740 10.7498/aps.41.740 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.740 740-743 //www.getgobooth.com/en/article/doi/10.7498/aps.41.744 Author(s): FANG DU-FEI, WANG YAM-SEN, HU WEI <br/><p>The electron impact ionization cross sections for different energy assignment on two final-state electrons (energy differential cross sections) of heliumlike ions have been calculated by using a disrored-wave Born exchange approximation. We found that the dependence of the differential cross sections on the scaled energy of secondary electrons can be well fitted with a two-parameter Gaussian function. The dependence cf two parameters on the incident electron energy and target charges have been given. The differences between the results from CBE (Coulomb-Born exchange approximation) and DBE calculations have been discussed. They show that it is necessary to use DBE calculation for low target charges and low incident en-</p> <br/>Acta Physica Sinica. 1992 41(5): 744-749. Published 2005-07-03 Author(s): FANG DU-FEI, WANG YAM-SEN, HU WEI <br/><p>The electron impact ionization cross sections for different energy assignment on two final-state electrons (energy differential cross sections) of heliumlike ions have been calculated by using a disrored-wave Born exchange approximation. We found that the dependence of the differential cross sections on the scaled energy of secondary electrons can be well fitted with a two-parameter Gaussian function. The dependence cf two parameters on the incident electron energy and target charges have been given. The differences between the results from CBE (Coulomb-Born exchange approximation) and DBE calculations have been discussed. They show that it is necessary to use DBE calculation for low target charges and low incident en-</p> <br/>Acta Physica Sinica. 1992 41(5): 744-749. Published 2005-07-03 DIFFERENTIAL CROSS SECTIONS FOR ELECTRON IMPACT IONIZATION OF HELIUMLIKE IONS FANG DU-FEI, WANG YAM-SEN, HU WEI 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 744-749. article doi:10.7498/aps.41.744 10.7498/aps.41.744 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.744 744-749 //www.getgobooth.com/en/article/doi/10.7498/aps.41.750 Author(s): SONG FEI-JUN <br/><p>The theory and approach of the eigenvalue problems of the imaging integral operator of finite domain are discussed in detail. The approximation solution of the imaging integral operator equation is derived by expanding the eigenfunctions in the space of the zeroth-order eigenfunctions. The eigenvalues and eigenfunctions for real microscopic objectives with symmetric aberrations are calculated in terms of the measured LSF data. The experimental system is described and the results are discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 750-758. Published 2005-07-03 Author(s): SONG FEI-JUN <br/><p>The theory and approach of the eigenvalue problems of the imaging integral operator of finite domain are discussed in detail. The approximation solution of the imaging integral operator equation is derived by expanding the eigenfunctions in the space of the zeroth-order eigenfunctions. The eigenvalues and eigenfunctions for real microscopic objectives with symmetric aberrations are calculated in terms of the measured LSF data. The experimental system is described and the results are discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 750-758. Published 2005-07-03 SPECTRUM ANALYSIS OF IMAGING INTEGRAL OPERATOR FOR OPTICAL SYSTEMS WITH SYMMETRIC ABERRATIONS SONG FEI-JUN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 750-758. article doi:10.7498/aps.41.750 10.7498/aps.41.750 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.750 750-758 //www.getgobooth.com/en/article/doi/10.7498/aps.41.759 Author(s): YU MEI-WEN, ZHANG CUN-LIN <br/><p>The optical parameter distribution can be determined when the polarization state and phase difference of the object wave and reference wave are given. Thus, the polarization hologram can be regarded as a complex polarizing element. According to the matrix theory of the polarizing element, the transmission matrix of polarization holograms can be found. The Jones vectors of the reconstructing wave can be found by the product of the Jones vectors of the illumination light and the transmission matrix of polarization holograms.</p> <br/>Acta Physica Sinica. 1992 41(5): 759-765. Published 2005-07-03 Author(s): YU MEI-WEN, ZHANG CUN-LIN <br/><p>The optical parameter distribution can be determined when the polarization state and phase difference of the object wave and reference wave are given. Thus, the polarization hologram can be regarded as a complex polarizing element. According to the matrix theory of the polarizing element, the transmission matrix of polarization holograms can be found. The Jones vectors of the reconstructing wave can be found by the product of the Jones vectors of the illumination light and the transmission matrix of polarization holograms.</p> <br/>Acta Physica Sinica. 1992 41(5): 759-765. Published 2005-07-03 TRANSMISSION MATRIX OF POLARIZATION HOLOGRAMS IN THE PHOTO-INDUCED ANISOTROPIC RECORDING MATERIAL YU MEI-WEN, ZHANG CUN-LIN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 759-765. article doi:10.7498/aps.41.759 10.7498/aps.41.759 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.759 759-765 //www.getgobooth.com/en/article/doi/10.7498/aps.41.766 Author(s): LI GAO-XIANG, PENG JIN-SHENG <br/><p>In this paper, we have respectively investigated the time evolution of the phase operator of radiation field in the Jaynes-Cummings model with and without RWA. We verified that the atomic Rabi oscillation leads to the phase dissipation of radiation field by analytical method, and the effect of virtual field can exhibit the quantum fluctuations of system and leads to the frequency shift of radiation field.</p> <br/>Acta Physica Sinica. 1992 41(5): 766-773. Published 2005-07-03 Author(s): LI GAO-XIANG, PENG JIN-SHENG <br/><p>In this paper, we have respectively investigated the time evolution of the phase operator of radiation field in the Jaynes-Cummings model with and without RWA. We verified that the atomic Rabi oscillation leads to the phase dissipation of radiation field by analytical method, and the effect of virtual field can exhibit the quantum fluctuations of system and leads to the frequency shift of radiation field.</p> <br/>Acta Physica Sinica. 1992 41(5): 766-773. Published 2005-07-03 PHASE FLUCTUATIONS IN JAYNES-CUMMINGS MODEL WITH AND WITHOUT ROTATION WAVE APPROXIMATION LI GAO-XIANG, PENG JIN-SHENG 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 766-773. article doi:10.7498/aps.41.766 10.7498/aps.41.766 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.766 766-773 //www.getgobooth.com/en/article/doi/10.7498/aps.41.774 Author(s): DING WU <br/><p>Tn this paper, we have obtained the power expression of the coherent harmonic emission generated by the fundamental mode bunching, and explained their temporal profile and line-width.</p> <br/>Acta Physica Sinica. 1992 41(5): 774-782. Published 2005-07-03 Author(s): DING WU <br/><p>Tn this paper, we have obtained the power expression of the coherent harmonic emission generated by the fundamental mode bunching, and explained their temporal profile and line-width.</p> <br/>Acta Physica Sinica. 1992 41(5): 774-782. Published 2005-07-03 TEMPORAL PROFILE AND LINEWIDTH OF THE COHERENT HARMONIC EMISSION GENERATED BY THE FUNDAMENTAL MODE BUNCHING DING WU 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 774-782. article doi:10.7498/aps.41.774 10.7498/aps.41.774 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.774 774-782 //www.getgobooth.com/en/article/doi/10.7498/aps.41.783 Author(s): HUANG CHAO-SONG, LI JUN <br/><p>Explosive mode coupling of low frequency interchange instability in partially ionized plasmas is studied. The coupled equations describing coherent wave-wave interactions of the interchange mode are derived. The possibilities of explosive instabilities for the interchange mode are found. It is shown that there exist the explosive coupling of positive energy wave and negative energy wave, positive energy wave and negative dissipation, and negative energy wave and positive dissipation, in the partially ionized plasmas. The theoretical results obtained can be applied to the ionospheric plasma and the mirror-confined plasma.</p> <br/>Acta Physica Sinica. 1992 41(5): 783-791. Published 2005-07-03 Author(s): HUANG CHAO-SONG, LI JUN <br/><p>Explosive mode coupling of low frequency interchange instability in partially ionized plasmas is studied. The coupled equations describing coherent wave-wave interactions of the interchange mode are derived. The possibilities of explosive instabilities for the interchange mode are found. It is shown that there exist the explosive coupling of positive energy wave and negative energy wave, positive energy wave and negative dissipation, and negative energy wave and positive dissipation, in the partially ionized plasmas. The theoretical results obtained can be applied to the ionospheric plasma and the mirror-confined plasma.</p> <br/>Acta Physica Sinica. 1992 41(5): 783-791. Published 2005-07-03 MODE COUPLING OF INTERCHANGE INSTABILITY IN PLASMAS HUANG CHAO-SONG, LI JUN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 783-791. article doi:10.7498/aps.41.783 10.7498/aps.41.783 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.783 783-791 //www.getgobooth.com/en/article/doi/10.7498/aps.41.792 Author(s): WANG DE-HE <br/><p>This paper analyses the atomic correlations in crystalline and amorphous Si and Ge and discusses their relationship. Expressions for the atomic correlations are presented. On the basis of the theory, a 400-atom structural model for a-Ge has been constructed. The main characteristics of the model are in good agreement with experimental results.</p> <br/>Acta Physica Sinica. 1992 41(5): 792-797. Published 2005-07-03 Author(s): WANG DE-HE <br/><p>This paper analyses the atomic correlations in crystalline and amorphous Si and Ge and discusses their relationship. Expressions for the atomic correlations are presented. On the basis of the theory, a 400-atom structural model for a-Ge has been constructed. The main characteristics of the model are in good agreement with experimental results.</p> <br/>Acta Physica Sinica. 1992 41(5): 792-797. Published 2005-07-03 ATOMIC CORRELATIONS IN AMORPHOUS Si AND Ge AND STRUCTURAL MODEL WANG DE-HE 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 792-797. article doi:10.7498/aps.41.792 10.7498/aps.41.792 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.792 792-797 //www.getgobooth.com/en/article/doi/10.7498/aps.41.798 Author(s): GAO QIAO-JUN, LIN ZENG-DONG <br/><p>It has been discovered that the physical process of diamond surface metallization is the converse physical process of synthesized diamond film produced by plasma CVD when the substrate is strong carbide forming element and synthesitic temperatures range from 700℃ to 1000℃. We predicted that the physical process of synthesized diamond film should have a structure such as W-WC-diamond film or Si-SiC-diamond film, etc. under this condition.</p> <br/>Acta Physica Sinica. 1992 41(5): 798-803. Published 2005-07-03 Author(s): GAO QIAO-JUN, LIN ZENG-DONG <br/><p>It has been discovered that the physical process of diamond surface metallization is the converse physical process of synthesized diamond film produced by plasma CVD when the substrate is strong carbide forming element and synthesitic temperatures range from 700℃ to 1000℃. We predicted that the physical process of synthesized diamond film should have a structure such as W-WC-diamond film or Si-SiC-diamond film, etc. under this condition.</p> <br/>Acta Physica Sinica. 1992 41(5): 798-803. Published 2005-07-03 PHYSICAL MECHANISM OF SYNTHESIZED DIAMOND FILMS ON THE SUBSTRATE OF A STRONG CARBIDE FORMING ELEMENT GAO QIAO-JUN, LIN ZENG-DONG 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 798-803. article doi:10.7498/aps.41.798 10.7498/aps.41.798 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.798 798-803 //www.getgobooth.com/en/article/doi/10.7498/aps.41.804 Author(s): HUANG HENG-JI, YASUNARI ZEMPO <br/><p>The long-range topological disorder of a screw dislocation provides a peculiar medium for waves in solids. Influences of potential in this medium to electronic states are investigated. A square well potential is employed as a simple example. The potential scattering solution in this medium is successfully obtained in terms of the phase-shift analysis. The unperturbed wave function is not the plane wave but the exact solution of the Aharonov-Bohm equation. The number and position of the bound state levels depend on the coupling of an electron and the topological disorder.</p> <br/>Acta Physica Sinica. 1992 41(5): 804-808. Published 2005-07-03 Author(s): HUANG HENG-JI, YASUNARI ZEMPO <br/><p>The long-range topological disorder of a screw dislocation provides a peculiar medium for waves in solids. Influences of potential in this medium to electronic states are investigated. A square well potential is employed as a simple example. The potential scattering solution in this medium is successfully obtained in terms of the phase-shift analysis. The unperturbed wave function is not the plane wave but the exact solution of the Aharonov-Bohm equation. The number and position of the bound state levels depend on the coupling of an electron and the topological disorder.</p> <br/>Acta Physica Sinica. 1992 41(5): 804-808. Published 2005-07-03 SCATTERING AND BOUND STATES DUE TO THE POTENTIAL FIELD IN A LATTICE WITH THE LONG-RANGE TOPOLOGICAL DISORDER OF A SCREW DISLOCASION. HUANG HENG-JI, YASUNARI ZEMPO 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 804-808. article doi:10.7498/aps.41.804 10.7498/aps.41.804 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.804 804-808 //www.getgobooth.com/en/article/doi/10.7498/aps.41.809 Author(s): TIAN REN-HE, LU WU-XING, LI ZHU-HUAI, GAO YU-ZUN <br/><p>In this paper, the secondary defects and their annealing behaviours in Zn+, Mg+, Be+ ion-implanted InSb have been investigated by means of the plan-view transmission electron microscopy (TEM), cross-sectional TEM(XTEM) and Rutherford backscattering and channeling spectroscopy. The result shows that the secondary defects caused by the lighter Be+ ion implantation are much less than that caused by the heavier Zn+ ion implantation. And the ion Mg+, in the region of medium dose (about 1×1031cm2), causes the damage easy to restore. The effect of annealing temperature is investigated from 360℃ to 440℃, and the result indicates that the 360℃ is a better annealing temperature. The figuration of secondary defects in ion-implanted InSb is differant from that in ion-implanted Si: the secondary defects in ion-implanted InSb consist of dislocations and dislocation networks mainly, and the dislocation loop is not dominant, however, precipitates and fault tetrahedras also exist in it.</p> <br/>Acta Physica Sinica. 1992 41(5): 809-813. Published 2005-07-03 Author(s): TIAN REN-HE, LU WU-XING, LI ZHU-HUAI, GAO YU-ZUN <br/><p>In this paper, the secondary defects and their annealing behaviours in Zn+, Mg+, Be+ ion-implanted InSb have been investigated by means of the plan-view transmission electron microscopy (TEM), cross-sectional TEM(XTEM) and Rutherford backscattering and channeling spectroscopy. The result shows that the secondary defects caused by the lighter Be+ ion implantation are much less than that caused by the heavier Zn+ ion implantation. And the ion Mg+, in the region of medium dose (about 1×1031cm2), causes the damage easy to restore. The effect of annealing temperature is investigated from 360℃ to 440℃, and the result indicates that the 360℃ is a better annealing temperature. The figuration of secondary defects in ion-implanted InSb is differant from that in ion-implanted Si: the secondary defects in ion-implanted InSb consist of dislocations and dislocation networks mainly, and the dislocation loop is not dominant, however, precipitates and fault tetrahedras also exist in it.</p> <br/>Acta Physica Sinica. 1992 41(5): 809-813. Published 2005-07-03 A STUDY OF SECONDARY DEFECTS IN ION- IMPLANTED InSb TIAN REN-HE, LU WU-XING, LI ZHU-HUAI, GAO YU-ZUN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 809-813. article doi:10.7498/aps.41.809 10.7498/aps.41.809 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.809 809-813 //www.getgobooth.com/en/article/doi/10.7498/aps.41.814 Author(s): LI JIAN, ZHANG LI-DE, WANG JING <br/><p>Dynamic mechanical loss spectra correspornding to different frequency were measured at ascending temperature for amorphous polymer PVC (a-PVC). It is found that measuring frequency dependance of the parameters of a-peak obviously exists. To determine the contribution of τ0 or ΔH distribution to τ distribution, on the basis of analysing relaxation time distribution (τ distribution) of α-peak in a-PVC, the parameters of τ0 and ΔH have been calculated in this paper.</p> <br/>Acta Physica Sinica. 1992 41(5): 814-818. Published 2005-07-03 Author(s): LI JIAN, ZHANG LI-DE, WANG JING <br/><p>Dynamic mechanical loss spectra correspornding to different frequency were measured at ascending temperature for amorphous polymer PVC (a-PVC). It is found that measuring frequency dependance of the parameters of a-peak obviously exists. To determine the contribution of τ0 or ΔH distribution to τ distribution, on the basis of analysing relaxation time distribution (τ distribution) of α-peak in a-PVC, the parameters of τ0 and ΔH have been calculated in this paper.</p> <br/>Acta Physica Sinica. 1992 41(5): 814-818. Published 2005-07-03 CALCULATION OF RELAXATION TIME DISTRIBUTION OF α-PEAK IN PVC WITH GAUSSIAN DISTRIBUTION LI JIAN, ZHANG LI-DE, WANG JING 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 814-818. article doi:10.7498/aps.41.814 10.7498/aps.41.814 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.814 814-818 //www.getgobooth.com/en/article/doi/10.7498/aps.41.819 Author(s): JIA JIN-FENG, LI YAN-FANG, ZHAO RU-GUANG, YANG WEI-SHENG <br/><p>In this paper, we investigate the method of kinematic low energy electron diffraction (KLEED) and constant momentum transfer averaging (CMTA). Through a thorough review, we point out that the method has great potential in surface structure determination although it had not been used properly in che past years. This method has been improved greatly in the present work. Firstly, with our own experiment, we demonstrate that the effect of multiple scattering can be eliminated in large part by averaging only a few I-S curves taken with different suitably selected diffraction geometry. Secondly, we show that in KLEED calculation, the constant scattering factor approximation is quite convenient and reasonable for surfaces consisting of same kind of atoms. Thirdly, this work introduces a peak broadening factor to reflect the thermal effect upon the I-V curves which had been neglected in some KLEED calculations. Finally, nonstructural parameters, such as inner potential, mean free path, peak broadening factor and attenuation factor, are optimized to give the best agreement between the calculated and experiment results. Application on Cu(001)1×1 surface indicates that the improved KLEED/CMTA method for surface analyses is simple, reliable and powerful.</p> <br/>Acta Physica Sinica. 1992 41(5): 819-826. Published 2005-07-03 Author(s): JIA JIN-FENG, LI YAN-FANG, ZHAO RU-GUANG, YANG WEI-SHENG <br/><p>In this paper, we investigate the method of kinematic low energy electron diffraction (KLEED) and constant momentum transfer averaging (CMTA). Through a thorough review, we point out that the method has great potential in surface structure determination although it had not been used properly in che past years. This method has been improved greatly in the present work. Firstly, with our own experiment, we demonstrate that the effect of multiple scattering can be eliminated in large part by averaging only a few I-S curves taken with different suitably selected diffraction geometry. Secondly, we show that in KLEED calculation, the constant scattering factor approximation is quite convenient and reasonable for surfaces consisting of same kind of atoms. Thirdly, this work introduces a peak broadening factor to reflect the thermal effect upon the I-V curves which had been neglected in some KLEED calculations. Finally, nonstructural parameters, such as inner potential, mean free path, peak broadening factor and attenuation factor, are optimized to give the best agreement between the calculated and experiment results. Application on Cu(001)1×1 surface indicates that the improved KLEED/CMTA method for surface analyses is simple, reliable and powerful.</p> <br/>Acta Physica Sinica. 1992 41(5): 819-826. Published 2005-07-03 AN IMPROVED KLEED/CMTA METHOD AND ITS APPLICATION ON Cu(001)1×1 SURFACE JIA JIN-FENG, LI YAN-FANG, ZHAO RU-GUANG, YANG WEI-SHENG 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 819-826. article doi:10.7498/aps.41.819 10.7498/aps.41.819 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.819 819-826 //www.getgobooth.com/en/article/doi/10.7498/aps.41.827 Author(s): JIA JIN-FENG, ZHAO RU-GUANG, YANG WEI-SHENG <br/><p>In this paper, we carried out an improved kinematic low energy electron diffraction and constant momentum transfer averaging (KLEED/CMTA) analysis of aSi(111)31/2×31/2-Al structure After a thorough optimization of the parameters, we came to the conclusion that T4 model is the best, which gives an excellent agreement with experiment curves(RVHT = 0.158). Atomic coordinates and bond lengths of the model have been determined for Al atoms and all Si atoms in the first six layers of the substrate. None of the bond-length deviations from the bulk value is larger than 5% and within an error bar of 0.05A, all of the parameters (except a lateral displacement) are consistent with the conclusion of DLEED. The successful application of the KLEED/CMTA method to such a complicated surface structure indicates strongly that the method is really very poweriul and reliable,and thus has great potential in surface structure analysis.</p> <br/>Acta Physica Sinica. 1992 41(5): 827-832. Published 2005-07-03 Author(s): JIA JIN-FENG, ZHAO RU-GUANG, YANG WEI-SHENG <br/><p>In this paper, we carried out an improved kinematic low energy electron diffraction and constant momentum transfer averaging (KLEED/CMTA) analysis of aSi(111)31/2×31/2-Al structure After a thorough optimization of the parameters, we came to the conclusion that T4 model is the best, which gives an excellent agreement with experiment curves(RVHT = 0.158). Atomic coordinates and bond lengths of the model have been determined for Al atoms and all Si atoms in the first six layers of the substrate. None of the bond-length deviations from the bulk value is larger than 5% and within an error bar of 0.05A, all of the parameters (except a lateral displacement) are consistent with the conclusion of DLEED. The successful application of the KLEED/CMTA method to such a complicated surface structure indicates strongly that the method is really very poweriul and reliable,and thus has great potential in surface structure analysis.</p> <br/>Acta Physica Sinica. 1992 41(5): 827-832. Published 2005-07-03 APPLICATION OF THE IMPROVED KLEED/CMTA METHOD ON Si(111) 31/2×31/2-Al SURFACE JIA JIN-FENG, ZHAO RU-GUANG, YANG WEI-SHENG 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 827-832. article doi:10.7498/aps.41.827 10.7498/aps.41.827 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.827 827-832 //www.getgobooth.com/en/article/doi/10.7498/aps.41.833 Author(s): BAO KE-DA <br/><p>In this paper the electrical conductance of a two-phase composite medium with ellipsoidal inclusions has been investigated by using the effective-medium theory(EMT). An anisotropic factor m is suggusted TO take account of the local anisotropy of an inhomogeneous system. A formula for calculating the effective electrical conductivity tensor in such case has been proposed. A geometrical structure factor Ii(i = x,y,z) is introduced to estimate the near field effect between the particles aggregated in the inclusions. It has been shown that there is a simple relation between the structure factor Ii and the depolarization factor ni. The calculated results based on the EMT show that prolate ellipsoid (b/a = 0.2) and oblate ellipsoid (b/a=7.5) are the two principle geometrical configurations leading to the percolation threshold c1* =0.17. A preliminary theoretical analysis informs that the common mechanism leading to the percolation by these two configurations is the formation of an 'infinite' chain-shaped cluster.</p> <br/>Acta Physica Sinica. 1992 41(5): 833-840. Published 2005-07-03 Author(s): BAO KE-DA <br/><p>In this paper the electrical conductance of a two-phase composite medium with ellipsoidal inclusions has been investigated by using the effective-medium theory(EMT). An anisotropic factor m is suggusted TO take account of the local anisotropy of an inhomogeneous system. A formula for calculating the effective electrical conductivity tensor in such case has been proposed. A geometrical structure factor Ii(i = x,y,z) is introduced to estimate the near field effect between the particles aggregated in the inclusions. It has been shown that there is a simple relation between the structure factor Ii and the depolarization factor ni. The calculated results based on the EMT show that prolate ellipsoid (b/a = 0.2) and oblate ellipsoid (b/a=7.5) are the two principle geometrical configurations leading to the percolation threshold c1* =0.17. A preliminary theoretical analysis informs that the common mechanism leading to the percolation by these two configurations is the formation of an 'infinite' chain-shaped cluster.</p> <br/>Acta Physica Sinica. 1992 41(5): 833-840. Published 2005-07-03 EFFECTIVE-MEDIUM THEORY FOR ELECTRICAL CONDUC-TANCE OF A TWO-PHASE COMPOSITE MEDIUM WITH ELLIPSOIDAL-INCLUSIONS BAO KE-DA 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 833-840. article doi:10.7498/aps.41.833 10.7498/aps.41.833 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.833 833-840 //www.getgobooth.com/en/article/doi/10.7498/aps.41.841 Author(s): HOU BI-HUI, CHEN ZHAO-JIA, XU QIN-LUN, XU YUN-HUA <br/><p>No-resonant microwave absorption signals in BiPI SbSrCaCuO samples with different si zes and in coarse vacuum were measured, the experiment showed that the signals related to the grain size of the sample and oxygen atmosphere. The signal intensity was proportional to the Meissner state volume which was a shell layer of the skin effeet in the penetration layer.</p> <br/>Acta Physica Sinica. 1992 41(5): 841-845. Published 2005-07-03 Author(s): HOU BI-HUI, CHEN ZHAO-JIA, XU QIN-LUN, XU YUN-HUA <br/><p>No-resonant microwave absorption signals in BiPI SbSrCaCuO samples with different si zes and in coarse vacuum were measured, the experiment showed that the signals related to the grain size of the sample and oxygen atmosphere. The signal intensity was proportional to the Meissner state volume which was a shell layer of the skin effeet in the penetration layer.</p> <br/>Acta Physica Sinica. 1992 41(5): 841-845. Published 2005-07-03 MICROWAVE ABSORPTION BY HIGH Tc SUPERCONDUCTORS HOU BI-HUI, CHEN ZHAO-JIA, XU QIN-LUN, XU YUN-HUA 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 841-845. article doi:10.7498/aps.41.841 10.7498/aps.41.841 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.841 841-845 //www.getgobooth.com/en/article/doi/10.7498/aps.41.846 Author(s): JIN JI-RONG, CHEN WU-MING, JIN XIN, ZHANG YI-TONG, LU MU, JI HE-LIN, LIU XIN-HU, YAO XI-XIAN, YI MIN-YU, HONG CANG-SHENG, WAN TAO-YU, FANG JUN-REN <br/><p>Effect of slow neutron irradiation of low fluence on bismuth-based superconductors is studied. It's shown through experiments that (1) both critical current density Jc and zero-resistance temperature Tc0 are increased, though to different extents, after the Bi-based superconductors were irradiated with slow neutrons to suitable fluence and (2) slow neutrons of low fluence and fast neutrons of high fluence have similar irradiation effects on Bi-based superconductors.</p> <br/>Acta Physica Sinica. 1992 41(5): 846-850. Published 2005-07-03 Author(s): JIN JI-RONG, CHEN WU-MING, JIN XIN, ZHANG YI-TONG, LU MU, JI HE-LIN, LIU XIN-HU, YAO XI-XIAN, YI MIN-YU, HONG CANG-SHENG, WAN TAO-YU, FANG JUN-REN <br/><p>Effect of slow neutron irradiation of low fluence on bismuth-based superconductors is studied. It's shown through experiments that (1) both critical current density Jc and zero-resistance temperature Tc0 are increased, though to different extents, after the Bi-based superconductors were irradiated with slow neutrons to suitable fluence and (2) slow neutrons of low fluence and fast neutrons of high fluence have similar irradiation effects on Bi-based superconductors.</p> <br/>Acta Physica Sinica. 1992 41(5): 846-850. Published 2005-07-03 IRRADIATION EFFECT WITH SLOW NEUTRONS OF LOW FLUENCE ON Bi-BASED SUPERCONDUCTORS JIN JI-RONG, CHEN WU-MING, JIN XIN, ZHANG YI-TONG, LU MU, JI HE-LIN, LIU XIN-HU, YAO XI-XIAN, YI MIN-YU, HONG CANG-SHENG, WAN TAO-YU, FANG JUN-REN 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 846-850. article doi:10.7498/aps.41.846 10.7498/aps.41.846 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.846 846-850 //www.getgobooth.com/en/article/doi/10.7498/aps.41.851 Author(s): LI HAI-PING, GAO XIAO-HUI <br/><p>A series of F-doped rare-earth superconductors RBa2Cu3OxFx were synthesized with CuF2 as one of the reactants. According to comparative experiments. It was found that sintering temperature was lowered, transition width was narrowed, the zero resistance temperature was raised to some degree, and lattice parameters was changed, as the oxygen was substituted by fluorine. It was proved that the fluorine had entered into 123 supercoductive phase lattice. The effect of fluorine on superconductivity was also discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 851-860. Published 2005-07-03 Author(s): LI HAI-PING, GAO XIAO-HUI <br/><p>A series of F-doped rare-earth superconductors RBa2Cu3OxFx were synthesized with CuF2 as one of the reactants. According to comparative experiments. It was found that sintering temperature was lowered, transition width was narrowed, the zero resistance temperature was raised to some degree, and lattice parameters was changed, as the oxygen was substituted by fluorine. It was proved that the fluorine had entered into 123 supercoductive phase lattice. The effect of fluorine on superconductivity was also discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 851-860. Published 2005-07-03 A STUDY ON THE SUBSTITUTION OF FLUORINE FOR OXYGEN IN RBa2Cu3Ox SUPERCONDUCTORS LI HAI-PING, GAO XIAO-HUI 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 851-860. article doi:10.7498/aps.41.851 10.7498/aps.41.851 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.851 851-860 //www.getgobooth.com/en/article/doi/10.7498/aps.41.861 Author(s): LIU JUN-MING <br/><p>Directional solidification of lamellar eutectic has been studied both theoretically and experimentally. This process has been modeled through comparing it with directional solidification of an array of cells in binary alloys and developing of the Saffman-Taylor viscous fin-gerinig in a Hele-Shaw cell in an unitied framework. A coupling relation among the solute diffusion, the thermal transfer and the capillary effect of the growing interface has been derived. The well known scaling law λ2V = const can be derived from this relation. Directional solidification of regular Al-Al2Cu eutectic and irregular Al-Si eutectic has been investigated experimentally, the coupling relation has been verified. The solidifying interface profile and thermal transfer effect of solidification have also been discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 861-868. Published 2005-07-03 Author(s): LIU JUN-MING <br/><p>Directional solidification of lamellar eutectic has been studied both theoretically and experimentally. This process has been modeled through comparing it with directional solidification of an array of cells in binary alloys and developing of the Saffman-Taylor viscous fin-gerinig in a Hele-Shaw cell in an unitied framework. A coupling relation among the solute diffusion, the thermal transfer and the capillary effect of the growing interface has been derived. The well known scaling law λ2V = const can be derived from this relation. Directional solidification of regular Al-Al2Cu eutectic and irregular Al-Si eutectic has been investigated experimentally, the coupling relation has been verified. The solidifying interface profile and thermal transfer effect of solidification have also been discussed.</p> <br/>Acta Physica Sinica. 1992 41(5): 861-868. Published 2005-07-03 DIRECTIONAL SOLIDIFICATION OF LAMELLAR EUTECTIC LIU JUN-MING 2005-07-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1992 41(5): 861-868. article doi:10.7498/aps.41.861 10.7498/aps.41.861 Acta Physica Sinica 41 5 2005-07-03 //www.getgobooth.com/en/article/doi/10.7498/aps.41.861 861-868

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