//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.37.1401 Author(s): WANG YANG-PU, JIN QI-SMU <br/><p>The rmally activated magnetoelastic relaxation in disordered ferromagnetic alloys is studied by using a new relaxation mechanism based on the concept of many-body interaction leading to an infrared divergence response. It nas been found that except the thermally assisted transitions of directional ordered atoms, the directional ordering, which causes a relaxation behavior of magnetic domain walls, includes two different classes of configurational tunnelling caused by many-body interactions. Based on this mechanism, a new relaxation law of magnetization and a new formula of magnetic disaccommodation were derived. Using Boltzmann superposition principle, an universal formula of internal friction was also derived, which was verified by experimental date.</p> <br/>Acta Physica Sinica. 1988 37(9): 1401-1405. Published 2005-07-06 Author(s): WANG YANG-PU, JIN QI-SMU <br/><p>The rmally activated magnetoelastic relaxation in disordered ferromagnetic alloys is studied by using a new relaxation mechanism based on the concept of many-body interaction leading to an infrared divergence response. It nas been found that except the thermally assisted transitions of directional ordered atoms, the directional ordering, which causes a relaxation behavior of magnetic domain walls, includes two different classes of configurational tunnelling caused by many-body interactions. Based on this mechanism, a new relaxation law of magnetization and a new formula of magnetic disaccommodation were derived. Using Boltzmann superposition principle, an universal formula of internal friction was also derived, which was verified by experimental date.</p> <br/>Acta Physica Sinica. 1988 37(9): 1401-1405. Published 2005-07-06 AMANY-BODY UNIVERSAL APPROACH TO THERMALLY ACTIVATED MAGNETOELASTIC RELAXATION IN FERROMAGNETIC ALLOYS WANG YANG-PU, JIN QI-SMU 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1401-1405. article doi:10.7498/aps.37.1401 10.7498/aps.37.1401 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1401 1401-1405 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1406 Author(s): LI TING, QIN ZI-KAI <br/><p>In this paper, we use the Green's function method with the symmetry decoupling scheme to study the phase transition in H-bond ferroelectric system. Some interesting results are obtained. Also, we find that the temperature and the order parameter at transition point, Tc and Sc, can be determined directly from the T-S relation, and the order of phase transition can be obtained naturally. The results are discussed in detail and compared with experiments.</p> <br/>Acta Physica Sinica. 1988 37(9): 1406-1414. Published 2005-07-06 Author(s): LI TING, QIN ZI-KAI <br/><p>In this paper, we use the Green's function method with the symmetry decoupling scheme to study the phase transition in H-bond ferroelectric system. Some interesting results are obtained. Also, we find that the temperature and the order parameter at transition point, Tc and Sc, can be determined directly from the T-S relation, and the order of phase transition can be obtained naturally. The results are discussed in detail and compared with experiments.</p> <br/>Acta Physica Sinica. 1988 37(9): 1406-1414. Published 2005-07-06 GREEN'S FUNCTION THEORY OF PHASE TRANSITION IN ORDER-DISORDER TYPE FERROELECTRICS AND ANTIFERROELECTRICS LI TING, QIN ZI-KAI 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1406-1414. article doi:10.7498/aps.37.1406 10.7498/aps.37.1406 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1406 1406-1414 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1415 Author(s): LI XIAO-SHEN, GONG CHANG-DE <br/><p>Resonance fluorescence spectrum and squeezing phenomenon are studied for an adatom near the surface of a periodic or quasi-periodic superlattice film using the surface-dressed optical Bloch equations. The influences of thickness and dielectric properties of each layer composing this film, number of layers, and geometry structures are discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1415-1424. Published 2005-07-06 Author(s): LI XIAO-SHEN, GONG CHANG-DE <br/><p>Resonance fluorescence spectrum and squeezing phenomenon are studied for an adatom near the surface of a periodic or quasi-periodic superlattice film using the surface-dressed optical Bloch equations. The influences of thickness and dielectric properties of each layer composing this film, number of layers, and geometry structures are discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1415-1424. Published 2005-07-06 RESONANCE FLUORESCENCE OF AN ADATOM NEAR THE SURFACE OF A PERIODIC OR QUASI-PERIODIC SUPERLATTICE FILM LI XIAO-SHEN, GONG CHANG-DE 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1415-1424. article doi:10.7498/aps.37.1415 10.7498/aps.37.1415 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1415 1415-1424 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1425 Author(s): FANG ZI-WEI, LIN CHENG-LU, ZOU SHI-CHANG <br/><p>The damage and annealing behavior of Si implanted at room temperature with P2+ and P+ at different energies (5-600 keV) and intermediate dose (～1014/cm2) has been investigated. Experimental results show that the damage created by P2+ implantation is always greater than that of P+ implantation. The ratio of total displaced atoms of the target cuased by molecular and ND(mol)/ND(atom)reached a maximal value at 100 keV (P2+)and 50 keV (P+) after rapid thermal annealing, the carrier concentration profiles measured by spreading resistance measurement are also different for the P2+ and P+ implanted samples. We attribute essentially this phenomenon to the displacement spike, but the multiple collision effect and the interaction between two molecular fragments should be considered when the incident energy is high.</p> <br/>Acta Physica Sinica. 1988 37(9): 1425-1431. Published 2005-07-06 Author(s): FANG ZI-WEI, LIN CHENG-LU, ZOU SHI-CHANG <br/><p>The damage and annealing behavior of Si implanted at room temperature with P2+ and P+ at different energies (5-600 keV) and intermediate dose (～1014/cm2) has been investigated. Experimental results show that the damage created by P2+ implantation is always greater than that of P+ implantation. The ratio of total displaced atoms of the target cuased by molecular and ND(mol)/ND(atom)reached a maximal value at 100 keV (P2+)and 50 keV (P+) after rapid thermal annealing, the carrier concentration profiles measured by spreading resistance measurement are also different for the P2+ and P+ implanted samples. We attribute essentially this phenomenon to the displacement spike, but the multiple collision effect and the interaction between two molecular fragments should be considered when the incident energy is high.</p> <br/>Acta Physica Sinica. 1988 37(9): 1425-1431. Published 2005-07-06 A STUDY OF DAMAGE IN SILICON CREATED BY P2+ IMPLANTATION FANG ZI-WEI, LIN CHENG-LU, ZOU SHI-CHANG 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1425-1431. article doi:10.7498/aps.37.1425 10.7498/aps.37.1425 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1425 1425-1431 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1432 Author(s): HAN QUAN-SHENG, ZHU ZHEN-HE <br/><p>The energy distribution of the diffraction fields of the transform-limited ultrashort laser pulses is inspected. By calculating the single- and doubleslit diffraction of the transform-limited pulses, the dependence of diffraction patterns on the pulse duration is revealed. It is indicated that the information about the pulse durations and shapes can be obtained through the diffration inspection.</p> <br/>Acta Physica Sinica. 1988 37(9): 1432-1437. Published 2005-07-06 Author(s): HAN QUAN-SHENG, ZHU ZHEN-HE <br/><p>The energy distribution of the diffraction fields of the transform-limited ultrashort laser pulses is inspected. By calculating the single- and doubleslit diffraction of the transform-limited pulses, the dependence of diffraction patterns on the pulse duration is revealed. It is indicated that the information about the pulse durations and shapes can be obtained through the diffration inspection.</p> <br/>Acta Physica Sinica. 1988 37(9): 1432-1437. Published 2005-07-06 DIFFRACTION OF ULTRASHORT LASER PULSES HAN QUAN-SHENG, ZHU ZHEN-HE 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1432-1437. article doi:10.7498/aps.37.1432 10.7498/aps.37.1432 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1432 1432-1437 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1438 Author(s): ZHANG LIN, LIN REN-MING, HUANG SI-XIAN <br/><p>In this paper, the multi-photon FPE of driven optical systems are treated for bad cavity case. The semi-classical linear stability analysis are performed. The non-classical effects are discussed, and it is shown that in two-photon case the atom-atom correlation enhances the non-clasical effects. This is in opposite to the single-photon case, and different from the good cavity case. The two-photon spectrum of transmitted light and resonance fluorescense are obtained, where the Rabi frequency Ω∝y2 (y is the incident field).</p> <br/>Acta Physica Sinica. 1988 37(9): 1438-1449. Published 2005-07-06 Author(s): ZHANG LIN, LIN REN-MING, HUANG SI-XIAN <br/><p>In this paper, the multi-photon FPE of driven optical systems are treated for bad cavity case. The semi-classical linear stability analysis are performed. The non-classical effects are discussed, and it is shown that in two-photon case the atom-atom correlation enhances the non-clasical effects. This is in opposite to the single-photon case, and different from the good cavity case. The two-photon spectrum of transmitted light and resonance fluorescense are obtained, where the Rabi frequency Ω∝y2 (y is the incident field).</p> <br/>Acta Physica Sinica. 1988 37(9): 1438-1449. Published 2005-07-06 THE MULTI-PHOTON QUANTUM STATITISCAL THEORY OF DRIVEN OPTICAL SYSTEMS (II)——BAD CAVITY CASE ZHANG LIN, LIN REN-MING, HUANG SI-XIAN 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1438-1449. article doi:10.7498/aps.37.1438 10.7498/aps.37.1438 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1438 1438-1449 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1450 Author(s): HONG SHUI-LI <br/><p>Based on the feature of molecular crystal, we apply the theorem that the foctor group of the space group is isomorphic to the point group and combine with the method of structural analysis, to classify the modes of internal vibrations of RbC8H5O4 directly according to the compatibility relations of the irreducible representations. For spectra of the fundamental frequency coupling and Fermi resonance in vibration spectra, we have to make determination according to the space relative position of each functional group and symmetrization of each fundamental direct product representation. Raman scattering spectra of three kind of isomor-phous crystal (i.e, RAP, TAP and KAP) have been obtained and compared with each other. The modes of external vibrations in crystal lattice was then isolated from the overall spectra.</p> <br/>Acta Physica Sinica. 1988 37(9): 1450-1460. Published 2005-07-06 Author(s): HONG SHUI-LI <br/><p>Based on the feature of molecular crystal, we apply the theorem that the foctor group of the space group is isomorphic to the point group and combine with the method of structural analysis, to classify the modes of internal vibrations of RbC8H5O4 directly according to the compatibility relations of the irreducible representations. For spectra of the fundamental frequency coupling and Fermi resonance in vibration spectra, we have to make determination according to the space relative position of each functional group and symmetrization of each fundamental direct product representation. Raman scattering spectra of three kind of isomor-phous crystal (i.e, RAP, TAP and KAP) have been obtained and compared with each other. The modes of external vibrations in crystal lattice was then isolated from the overall spectra.</p> <br/>Acta Physica Sinica. 1988 37(9): 1450-1460. Published 2005-07-06 SYMMETRIZATION ANALYSIS OF VIBRATIONAL MODES AND STUDY OF RAMAN SPECTRA FOR MOLECULAR CRYSTAL RbC8H5O4 HONG SHUI-LI 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1450-1460. article doi:10.7498/aps.37.1450 10.7498/aps.37.1450 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1450 1450-1460 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1461 Author(s): LI FU-BIN <br/><p>The field equation for a complex scalar field with a cubic nonlinear term in tour-dimensional Minkowski space is studied. Two classes of exact solutions, corresponding to solutions of plane and spherical waves, are presented.</p> <br/>Acta Physica Sinica. 1988 37(9): 1461-1470. Published 2005-07-06 Author(s): LI FU-BIN <br/><p>The field equation for a complex scalar field with a cubic nonlinear term in tour-dimensional Minkowski space is studied. Two classes of exact solutions, corresponding to solutions of plane and spherical waves, are presented.</p> <br/>Acta Physica Sinica. 1988 37(9): 1461-1470. Published 2005-07-06 PLANE AND SPHERICAL WAVES SOLUTIONS OF THE FIELD EQUATION FOR A COMPLEX SCALAR FIELD WITH A CUBIC NONLINEAR TERM IN FOUR DIMENSIONAL MINKOWSKI SPACE LI FU-BIN 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1461-1470. article doi:10.7498/aps.37.1461 10.7498/aps.37.1461 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1461 1461-1470 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1471 Author(s): WANG YU-XIA <br/><p>We study the infrared absorption spectrum, the ultraviolet and visible reflection spectrum of the Agl(Cr2O3) mixed ionic conductor, as well as its micro shape and result of composition analysis obtained with TEM. It is found that there exists some diffrence between Agl(Cr2O3) maxed ionic conductor and the pure Agl, Cr2O3 with microcosmic meticulous structure.A new model of the electrical medium is developed. According to the micro shape, we expect that the reason of the change in the microcosmic meticulous is the deformation electrical polorzation has been deformed. The mechnism of the property change of the AgI(Cr2O3) mixed inonic conductor is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1471-1479. Published 2005-07-06 Author(s): WANG YU-XIA <br/><p>We study the infrared absorption spectrum, the ultraviolet and visible reflection spectrum of the Agl(Cr2O3) mixed ionic conductor, as well as its micro shape and result of composition analysis obtained with TEM. It is found that there exists some diffrence between Agl(Cr2O3) maxed ionic conductor and the pure Agl, Cr2O3 with microcosmic meticulous structure.A new model of the electrical medium is developed. According to the micro shape, we expect that the reason of the change in the microcosmic meticulous is the deformation electrical polorzation has been deformed. The mechnism of the property change of the AgI(Cr2O3) mixed inonic conductor is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1471-1479. Published 2005-07-06 THE MECHANISM OF THE PROPERTY CHANGE OF THE MIXED Agl(Cr2A3) IONIC CONDUCTOR WANG YU-XIA 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1471-1479. article doi:10.7498/aps.37.1471 10.7498/aps.37.1471 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1471 1471-1479 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1480 Author(s): HUANG LI-JI, LIU BAI-XIN, DING JU-REN, LI HENG-DE <br/><p>In this article, we report the formation of fractal structures in nickel-based alloy systems, in thin films during ion beam-solid interactions. The experimental results show that a necessary condition for the fractal growth in thin films is amorphous structural phase transition in the amorphous matrix. The fractal dimensions of the observed patterns depended on the specific alloy systems: Df = 1.4 for Ni-Zr system and Df=1.7 for Ni-Mo system. The relationship among ion-solid interaction, amorphous structural phase transition and the fractal growth in thin films is also discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1480-1485. Published 2005-07-06 Author(s): HUANG LI-JI, LIU BAI-XIN, DING JU-REN, LI HENG-DE <br/><p>In this article, we report the formation of fractal structures in nickel-based alloy systems, in thin films during ion beam-solid interactions. The experimental results show that a necessary condition for the fractal growth in thin films is amorphous structural phase transition in the amorphous matrix. The fractal dimensions of the observed patterns depended on the specific alloy systems: Df = 1.4 for Ni-Zr system and Df=1.7 for Ni-Mo system. The relationship among ion-solid interaction, amorphous structural phase transition and the fractal growth in thin films is also discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1480-1485. Published 2005-07-06 FRACTAL GROWTH OF NICKEL-BASED ALLOYS IN THIN FILMS HUANG LI-JI, LIU BAI-XIN, DING JU-REN, LI HENG-DE 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1480-1485. article doi:10.7498/aps.37.1480 10.7498/aps.37.1480 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1480 1480-1485 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1486 Author(s): YU JIANG, HU GANG <br/><p>We have investigated the scaling properties of DLA clusters grown in the various kinds of external fields, using the meanfield theory with the continuum approximation. Our results show that the density of the growing cluster, ρ, initially dropping as 1/r, and becomes a constant value for constant external field. For the fields of type 1/rα we find that the aggregates exhibit very complicated, non-trivial scaling behaviours with the control parameter a varying.</p> <br/>Acta Physica Sinica. 1988 37(9): 1486-1493. Published 2005-07-06 Author(s): YU JIANG, HU GANG <br/><p>We have investigated the scaling properties of DLA clusters grown in the various kinds of external fields, using the meanfield theory with the continuum approximation. Our results show that the density of the growing cluster, ρ, initially dropping as 1/r, and becomes a constant value for constant external field. For the fields of type 1/rα we find that the aggregates exhibit very complicated, non-trivial scaling behaviours with the control parameter a varying.</p> <br/>Acta Physica Sinica. 1988 37(9): 1486-1493. Published 2005-07-06 AN ANALYTICAL STUDY ON THE SCALING PROPERTIES OF DIFFUSION-LIMITED AGGREGATION IN EXTERNAL FIELDS YU JIANG, HU GANG 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1486-1493. article doi:10.7498/aps.37.1486 10.7498/aps.37.1486 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1486 1486-1493 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1494 Author(s): BAO CHENG-GUANG <br/><p>The 1Se states of the helium atom have been calculated by diagonalizing the hamiltonian in a model space which is a union of four subspaces. The eigenwavefunctions have been analysed in detail and some features of internal structure have been found.</p> <br/>Acta Physica Sinica. 1988 37(9): 1494-1498. Published 2005-07-06 Author(s): BAO CHENG-GUANG <br/><p>The 1Se states of the helium atom have been calculated by diagonalizing the hamiltonian in a model space which is a union of four subspaces. The eigenwavefunctions have been analysed in detail and some features of internal structure have been found.</p> <br/>Acta Physica Sinica. 1988 37(9): 1494-1498. Published 2005-07-06 PARTIAL-WAVE ANALYSIS OF 1Se STATES OF HELIUM ATOM AND STRONG RADIAL-ANGULAR CORRELATION REGIONS BAO CHENG-GUANG 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1494-1498. article doi:10.7498/aps.37.1494 10.7498/aps.37.1494 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1494 1494-1498 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1499 Author(s): ZHAO BAO-CHANG, LI CHUN-FANG, XUE MING-QIU <br/><p>The attempt to reconstruct high resolution spectrum using the interferogram of the Fabry-Perot interferometer has been achieved theoretically by solving an integral equation. But ordinarily, the solution of the equation is unstable. It is necessary to keep the antinoise ability at a level of 10-4 At present, it is very difficult to manufacture such a device, which attains this level. It is demonstrated by using computer simulation experiments that solving of the equation will become rather stable under certain conditions and the antinoise ability can be enhanced to 10-2. This result makes it possible to develop a satisfactory device.</p> <br/>Acta Physica Sinica. 1988 37(9): 1499-1504. Published 2005-07-06 Author(s): ZHAO BAO-CHANG, LI CHUN-FANG, XUE MING-QIU <br/><p>The attempt to reconstruct high resolution spectrum using the interferogram of the Fabry-Perot interferometer has been achieved theoretically by solving an integral equation. But ordinarily, the solution of the equation is unstable. It is necessary to keep the antinoise ability at a level of 10-4 At present, it is very difficult to manufacture such a device, which attains this level. It is demonstrated by using computer simulation experiments that solving of the equation will become rather stable under certain conditions and the antinoise ability can be enhanced to 10-2. This result makes it possible to develop a satisfactory device.</p> <br/>Acta Physica Sinica. 1988 37(9): 1499-1504. Published 2005-07-06 A NEW METHOD FOR STUDING THE SPECTRAL LINE STRUCTURE ZHAO BAO-CHANG, LI CHUN-FANG, XUE MING-QIU 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1499-1504. article doi:10.7498/aps.37.1499 10.7498/aps.37.1499 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1499 1499-1504 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1505 Author(s): LIU SHENG-GANG, SUN YAN <br/><p>As a fundamental theorem in free electron lasers, Madey Theorem reveals the relationship between the spontaneous radiation and the stimulated radiation. In this paper, this problem is studied for transition radiation free electron lasers. The results show that there is a formula corresponding to the first part of Madey Theorem, but the former is more complicated; while the second part remains the same. Then the results obtained are used to simplify the small signal gain calculation.</p> <br/>Acta Physica Sinica. 1988 37(9): 1505-1509. Published 2005-07-06 Author(s): LIU SHENG-GANG, SUN YAN <br/><p>As a fundamental theorem in free electron lasers, Madey Theorem reveals the relationship between the spontaneous radiation and the stimulated radiation. In this paper, this problem is studied for transition radiation free electron lasers. The results show that there is a formula corresponding to the first part of Madey Theorem, but the former is more complicated; while the second part remains the same. Then the results obtained are used to simplify the small signal gain calculation.</p> <br/>Acta Physica Sinica. 1988 37(9): 1505-1509. Published 2005-07-06 A STUDY ON THE RELATIONSHIP BETWEEN THE SPONTANEOUS RADIATION AND THE STIMULATED RADIATION IN TRANSITION RADIATION FREE ELECTRON LASERS LIU SHENG-GANG, SUN YAN 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1505-1509. article doi:10.7498/aps.37.1505 10.7498/aps.37.1505 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1505 1505-1509 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1510 Author(s): LU YI-QUN, ZHANG BING <br/><p>A new lasing of Rb atom in noble gas system excited by the argon laser (4579 ?) was observed. The lasing originates from the transition between the 5d state and 5p state of Rb atom. The wavelengths are 7760 ? and 762l?.</p> <br/>Acta Physica Sinica. 1988 37(9): 1510-1516. Published 2005-07-06 Author(s): LU YI-QUN, ZHANG BING <br/><p>A new lasing of Rb atom in noble gas system excited by the argon laser (4579 ?) was observed. The lasing originates from the transition between the 5d state and 5p state of Rb atom. The wavelengths are 7760 ? and 762l?.</p> <br/>Acta Physica Sinica. 1988 37(9): 1510-1516. Published 2005-07-06 THE NEW LASING OF Rb ATOM IN NOBLE GAS SYSTEM LU YI-QUN, ZHANG BING 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1510-1516. article doi:10.7498/aps.37.1510 10.7498/aps.37.1510 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1510 1510-1516 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1517 Author(s): HAN RONG-DIAN, GUO XUE-ZHE, WENG HUI-MIN, XIE LI, ZHANG SHAO-QIANG <br/><p>In this article, we describe an apparatus for producing a slow-positron beam by moderating the decay positrons from a radioactive source using a W-vane moderator. The integral energy spectrum of the slow-positrons was measured with a retarding field analyser. The results are compared with that obtained using a Ni+MgO moderator at the same apparatus.</p> <br/>Acta Physica Sinica. 1988 37(9): 1517-1521. Published 2005-07-06 Author(s): HAN RONG-DIAN, GUO XUE-ZHE, WENG HUI-MIN, XIE LI, ZHANG SHAO-QIANG <br/><p>In this article, we describe an apparatus for producing a slow-positron beam by moderating the decay positrons from a radioactive source using a W-vane moderator. The integral energy spectrum of the slow-positrons was measured with a retarding field analyser. The results are compared with that obtained using a Ni+MgO moderator at the same apparatus.</p> <br/>Acta Physica Sinica. 1988 37(9): 1517-1521. Published 2005-07-06 EXPERIMENTS OF PRODUCING SLOW POSITRON BEAM HAN RONG-DIAN, GUO XUE-ZHE, WENG HUI-MIN, XIE LI, ZHANG SHAO-QIANG 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1517-1521. article doi:10.7498/aps.37.1517 10.7498/aps.37.1517 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1517 1517-1521 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1522 Author(s): YI CHUAN-YUAN, JIANG CHENG-HUA, WANG HUA-QIN <br/><p>A sample of polyurethane ionomer is studied by small angle X-ray scattering, positron annihilation and density measurement. The experimental results demonstrate that the counter-ion radius, domain volume and density of polyurethane ionomer increase and free volume decreases with valency of the metal ion increasing. The application ranges of small angle X-ray scattering and positron annihilation are discussed and showed that positron annihilation is one of significant methods for studying domain volume in ionomer.</p> <br/>Acta Physica Sinica. 1988 37(9): 1522-1526. Published 2005-07-06 Author(s): YI CHUAN-YUAN, JIANG CHENG-HUA, WANG HUA-QIN <br/><p>A sample of polyurethane ionomer is studied by small angle X-ray scattering, positron annihilation and density measurement. The experimental results demonstrate that the counter-ion radius, domain volume and density of polyurethane ionomer increase and free volume decreases with valency of the metal ion increasing. The application ranges of small angle X-ray scattering and positron annihilation are discussed and showed that positron annihilation is one of significant methods for studying domain volume in ionomer.</p> <br/>Acta Physica Sinica. 1988 37(9): 1522-1526. Published 2005-07-06 STUDY OF DOMAIN VOLUME IN POLYURETHANE IONOMER YI CHUAN-YUAN, JIANG CHENG-HUA, WANG HUA-QIN 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1522-1526. article doi:10.7498/aps.37.1522 10.7498/aps.37.1522 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1522 1522-1526 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1527 Author(s): HAN BAO-SHAN, XIU JIA-FA, NIE XIANG-FU, SUN HUI-LING, OUYANG FANG-LI, TANG GUI-DE <br/><p>The temperature dependence of VBL group formation in stripe domain walls of epitaxial garnet bubble films was investigated by means of the method of single-pulse bias field. A critical temperature T02 was found, which relats to the parameters of bubble films. When T &lt;T02, hard bubbles no longer form. It was also found that, when T02, there are two different stages for VBL group formation. Their demarcation temperature is T01. The experimental curves in the first stage have been qualitatively interpreted. And the difference of soft domain segment movements, which lead ro their hardening, in the two stages has been revealed by means of the method of double exposure photography.</p> <br/>Acta Physica Sinica. 1988 37(9): 1527-1533. Published 2005-07-06 Author(s): HAN BAO-SHAN, XIU JIA-FA, NIE XIANG-FU, SUN HUI-LING, OUYANG FANG-LI, TANG GUI-DE <br/><p>The temperature dependence of VBL group formation in stripe domain walls of epitaxial garnet bubble films was investigated by means of the method of single-pulse bias field. A critical temperature T02 was found, which relats to the parameters of bubble films. When T &lt;T02, hard bubbles no longer form. It was also found that, when T02, there are two different stages for VBL group formation. Their demarcation temperature is T01. The experimental curves in the first stage have been qualitatively interpreted. And the difference of soft domain segment movements, which lead ro their hardening, in the two stages has been revealed by means of the method of double exposure photography.</p> <br/>Acta Physica Sinica. 1988 37(9): 1527-1533. Published 2005-07-06 TEMPERATURE DEPENDENCE OF HARD BUBBLE FORMATION IN PULSE BIAS FIELDS HAN BAO-SHAN, XIU JIA-FA, NIE XIANG-FU, SUN HUI-LING, OUYANG FANG-LI, TANG GUI-DE 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1527-1533. article doi:10.7498/aps.37.1527 10.7498/aps.37.1527 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1527 1527-1533 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1534 Author(s): YANG YING-CHANG, KONG LIN-SHU, CHENG BEN-PEI <br/><p>The rare earth-iron intermetallic compounds of SmTiFex with x ranges from 8 to 11, was synthesized by are-melting technic. We found that they crystallize in the ThMn12-type tetragonal structure, 14/mmm. We report here the crystallographic and magnetic properties of Sm(Ti, Fe)12 and Gd (Ti, Fe)12. Unusual uniaxial magnetocrystalline anisotropy was observed in Sm(Ti, Fe)12 compounds. For Sm(Ti, Fe)12, the c-axis is the easy magnetization direction, and Curie temperature is 610 K. The magnetizrystalline anisotropy of Sm and Fe sublattices in Sm(Ti, Fe)12 compounds was analyzed by measuring magnetization curves of Gd(Ti, Fe)12. On the basis of our data, we conclude that both Sm and Fe sublattices have easy axis. After the discovery of Nd2Fe14B magnets, Sm(Ti, Fe)12 is another ternary rare earth-iron intermetallic compounds with strong uniaxial anisotropy.</p> <br/>Acta Physica Sinica. 1988 37(9): 1534-1539. Published 2005-07-06 Author(s): YANG YING-CHANG, KONG LIN-SHU, CHENG BEN-PEI <br/><p>The rare earth-iron intermetallic compounds of SmTiFex with x ranges from 8 to 11, was synthesized by are-melting technic. We found that they crystallize in the ThMn12-type tetragonal structure, 14/mmm. We report here the crystallographic and magnetic properties of Sm(Ti, Fe)12 and Gd (Ti, Fe)12. Unusual uniaxial magnetocrystalline anisotropy was observed in Sm(Ti, Fe)12 compounds. For Sm(Ti, Fe)12, the c-axis is the easy magnetization direction, and Curie temperature is 610 K. The magnetizrystalline anisotropy of Sm and Fe sublattices in Sm(Ti, Fe)12 compounds was analyzed by measuring magnetization curves of Gd(Ti, Fe)12. On the basis of our data, we conclude that both Sm and Fe sublattices have easy axis. After the discovery of Nd2Fe14B magnets, Sm(Ti, Fe)12 is another ternary rare earth-iron intermetallic compounds with strong uniaxial anisotropy.</p> <br/>Acta Physica Sinica. 1988 37(9): 1534-1539. Published 2005-07-06 STRUCTURAL AND MAGNETIC PROPERTIES OF Sm (Ti, Fe)12 INTERMETALLIC COMPOUNDS YANG YING-CHANG, KONG LIN-SHU, CHENG BEN-PEI 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1534-1539. article doi:10.7498/aps.37.1534 10.7498/aps.37.1534 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1534 1534-1539 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1540 Author(s): XU ZU-XIONG, MA RU-ZHANG, DUO LIANG, DING WEI-QING <br/><p>The hydrogenation of the amorphous alloy Fe87V3Zr10 is studied using secondary ion mass spectroscopy (SIMS) and Mossbauer spectroscopy (MS). It is shown that the atoms of hydrogen in charged samples combine preferentially with atoms of zirconium and produce clusters of ZrH, and a proportion of hydrogen combine with atoms of vanadium and iron and produce clusters of VH and FeH. the mechanism that hydrogen influences the magnetism of this alloy is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1540-1544. Published 2005-07-06 Author(s): XU ZU-XIONG, MA RU-ZHANG, DUO LIANG, DING WEI-QING <br/><p>The hydrogenation of the amorphous alloy Fe87V3Zr10 is studied using secondary ion mass spectroscopy (SIMS) and Mossbauer spectroscopy (MS). It is shown that the atoms of hydrogen in charged samples combine preferentially with atoms of zirconium and produce clusters of ZrH, and a proportion of hydrogen combine with atoms of vanadium and iron and produce clusters of VH and FeH. the mechanism that hydrogen influences the magnetism of this alloy is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1540-1544. Published 2005-07-06 THE HYDROGENATION OF THE AMORPHOUS ALLOY Fe87V3Zr10 XU ZU-XIONG, MA RU-ZHANG, DUO LIANG, DING WEI-QING 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1540-1544. article doi:10.7498/aps.37.1540 10.7498/aps.37.1540 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1540 1540-1544 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1545 Author(s): LI ZHENG-YING <br/><p>Using the pulsed drift-tube-mass spectrometer system, we measured the prebreakdown pa-rameters of NF3 mixtures used in excimer lasers or produced in discharges of SF6 mixtures, including electron attachment coefficients, attachment rate coefficients, ionic mobilities and kinds of negative ions. The relations between electron attachment rate coefficients and mean electron energies are measured as well.</p> <br/>Acta Physica Sinica. 1988 37(9): 1545-1549. Published 2005-07-06 Author(s): LI ZHENG-YING <br/><p>Using the pulsed drift-tube-mass spectrometer system, we measured the prebreakdown pa-rameters of NF3 mixtures used in excimer lasers or produced in discharges of SF6 mixtures, including electron attachment coefficients, attachment rate coefficients, ionic mobilities and kinds of negative ions. The relations between electron attachment rate coefficients and mean electron energies are measured as well.</p> <br/>Acta Physica Sinica. 1988 37(9): 1545-1549. Published 2005-07-06 SURVEY OF PREBREAKDOWN PARAMETERS OF NF3 LI ZHENG-YING 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1545-1549. article doi:10.7498/aps.37.1545 10.7498/aps.37.1545 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1545 1545-1549 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1550 Author(s): ZHENG HANG <br/><p>In this paper, a new variational ground state of strong electron-phonon interacting system is proposed, in which the electron subsystem is in superconducting pairing state and the phonon subsystem in two -phonon coherent state. We show that such a variational state is necessary for obtaining a superconducting condensation energy with reasonable magnitude and for the effective mass of the charge carriers not being too large.</p> <br/>Acta Physica Sinica. 1988 37(9): 1550-1555. Published 2005-07-06 Author(s): ZHENG HANG <br/><p>In this paper, a new variational ground state of strong electron-phonon interacting system is proposed, in which the electron subsystem is in superconducting pairing state and the phonon subsystem in two -phonon coherent state. We show that such a variational state is necessary for obtaining a superconducting condensation energy with reasonable magnitude and for the effective mass of the charge carriers not being too large.</p> <br/>Acta Physica Sinica. 1988 37(9): 1550-1555. Published 2005-07-06 A NOTE ON THE GROUND STATE OF STRONG ELECTRON-PHONON INTERACTING SYSTEM ZHENG HANG 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1550-1555. article doi:10.7498/aps.37.1550 10.7498/aps.37.1550 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1550 1550-1555 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1556 Author(s): DU JIA-JU, JIANG JIAN-YI, WANG XIANG, YIN HUA-QING <br/><p>The resistance, internal friction and Young's modulus of a high Tc superconductor-YBa2Cu3O7-δ were measured in-situ at 80 K to 300 K. Two obvious peaks of internal friction were observed near Tc On account of character of the peaks, we suggest that these two peaks are associated with the eletronic relaxation between Cu3+ and Ca2+ The peak and anomalies of Young's modulus observed in the range of 160 K to 280 K may be related to the position adjustment of oxygen vacancies.</p> <br/>Acta Physica Sinica. 1988 37(9): 1556-1559. Published 2005-07-06 Author(s): DU JIA-JU, JIANG JIAN-YI, WANG XIANG, YIN HUA-QING <br/><p>The resistance, internal friction and Young's modulus of a high Tc superconductor-YBa2Cu3O7-δ were measured in-situ at 80 K to 300 K. Two obvious peaks of internal friction were observed near Tc On account of character of the peaks, we suggest that these two peaks are associated with the eletronic relaxation between Cu3+ and Ca2+ The peak and anomalies of Young's modulus observed in the range of 160 K to 280 K may be related to the position adjustment of oxygen vacancies.</p> <br/>Acta Physica Sinica. 1988 37(9): 1556-1559. Published 2005-07-06 IN-SITU STUDY OF THE SUPERCONDUCTING TRANSITION AND INTERNAL FRICTION OF HIGH Tc SUPERCONDUCTOR YBaCuO DU JIA-JU, JIANG JIAN-YI, WANG XIANG, YIN HUA-QING 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1556-1559. article doi:10.7498/aps.37.1556 10.7498/aps.37.1556 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1556 1556-1559 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1560 Author(s): RUAN YAO-ZHONG, HU XUE-LONG, LI LI-PING, ZHAO YONG, PAN GUO-QIANG, CHEN ZU-YAO, ZHANG QI-RUI <br/><p>The influence of oxygen deficiency on the superconductivity and the thermoelectric power in single phase YBa2Cu3O7-x system was studied. The results show that the superconducting transition temperature decreases, and the magnitude of the thermoelectric power increases with the amount of oxygen vacancies. From the experimental results we suggest that holes conduction is predominant in single phase YBa2Cu3O7-x system, the relatively large phonon-drag thermopower indicates that there exists strong electron-phonon interaction in YBa2Cu3O7-x superconductors.</p> <br/>Acta Physica Sinica. 1988 37(9): 1560-1563. Published 2005-07-06 Author(s): RUAN YAO-ZHONG, HU XUE-LONG, LI LI-PING, ZHAO YONG, PAN GUO-QIANG, CHEN ZU-YAO, ZHANG QI-RUI <br/><p>The influence of oxygen deficiency on the superconductivity and the thermoelectric power in single phase YBa2Cu3O7-x system was studied. The results show that the superconducting transition temperature decreases, and the magnitude of the thermoelectric power increases with the amount of oxygen vacancies. From the experimental results we suggest that holes conduction is predominant in single phase YBa2Cu3O7-x system, the relatively large phonon-drag thermopower indicates that there exists strong electron-phonon interaction in YBa2Cu3O7-x superconductors.</p> <br/>Acta Physica Sinica. 1988 37(9): 1560-1563. Published 2005-07-06 INFLUENCE OF OXYGEN DEFICIENCY ON THE THERMOELECTRIC POWER IN SINGLE PHASE YBa2Cu3O7-x SYSTEM RUAN YAO-ZHONG, HU XUE-LONG, LI LI-PING, ZHAO YONG, PAN GUO-QIANG, CHEN ZU-YAO, ZHANG QI-RUI 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1560-1563. article doi:10.7498/aps.37.1560 10.7498/aps.37.1560 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1560 1560-1563 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1564 Author(s): TANG KUN-FA, HU JIA-ZHEN <br/><p>A condition given by Baxter for the general IRF model to exhibit a disorder solution is applied to a generalised mixed spin model. The exact expression for the free energy and the condition ensuring the validity of it are obtained. The asymptotic behaviour of the intra-row correlations is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1564-1568. Published 2005-07-06 Author(s): TANG KUN-FA, HU JIA-ZHEN <br/><p>A condition given by Baxter for the general IRF model to exhibit a disorder solution is applied to a generalised mixed spin model. The exact expression for the free energy and the condition ensuring the validity of it are obtained. The asymptotic behaviour of the intra-row correlations is discussed.</p> <br/>Acta Physica Sinica. 1988 37(9): 1564-1568. Published 2005-07-06 EXACT SOLUTION OF A GENERALISED MIXED SPIN MODEL ON DISORDER DOMAIN TANG KUN-FA, HU JIA-ZHEN 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1564-1568. article doi:10.7498/aps.37.1564 10.7498/aps.37.1564 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1564 1564-1568 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1569 Author(s): HUANG RONG, WANG GUAN-YING <br/><p>An improvement of revised Kossel ratio method is put forward in this paper, at the same time a Kossel orientation method of crystal is developed. It can analyse more Kossel patterns than generally used ratio method. It is applied to a arbitrarily orientation Kossel pattern of a Fe-0.76wt%V-0.08wt%N alloy. The accuracy of the lattice parameter determination reaches 5×10-5?.</p> <br/>Acta Physica Sinica. 1988 37(9): 1569-1574. Published 2005-07-06 Author(s): HUANG RONG, WANG GUAN-YING <br/><p>An improvement of revised Kossel ratio method is put forward in this paper, at the same time a Kossel orientation method of crystal is developed. It can analyse more Kossel patterns than generally used ratio method. It is applied to a arbitrarily orientation Kossel pattern of a Fe-0.76wt%V-0.08wt%N alloy. The accuracy of the lattice parameter determination reaches 5×10-5?.</p> <br/>Acta Physica Sinica. 1988 37(9): 1569-1574. Published 2005-07-06 AN IMPROVEMENT OF KOSSEL RATIO METHOD HUANG RONG, WANG GUAN-YING 2005-07-06 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1988 37(9): 1569-1574. article doi:10.7498/aps.37.1569 10.7498/aps.37.1569 Acta Physica Sinica 37 9 2005-07-06 //www.getgobooth.com/en/article/doi/10.7498/aps.37.1569 1569-1574

map