//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.45.897 Author(s): LI CHUN-FANG, GUO GUANG-CAN <br/><p>First we put forward an essential condition, for the existence of the non-zero adiabatic geometric phase of a quantum-mechanical Hamiltonian system, that the Hamiltonian operators at different times do not commute. Then it is shown that constraint =0 determines completely the phase relation of normalized eigenstate vectors │n' (t)&lt; at different times. According to this property, we advance the sufficient and necessary condition for the existence of the non-zero adiabatic geometric phase, which is |n′(T)&lt;≠|n′(0)&lt; when =0. And also we derive a general time-integral formula for the adiabatic geometric phase along the line. Finally, as an application of it, we calculate the geometric phase of a spin 1/2 system once discussed by Solem and Biedenharn. It is pointed out that the problem encountered by them lies in the multi-valuedness of the eigenstate vector in parameter space.</p> <br/>Acta Physica Sinica. 1996 45(6): 897-903. Published 1996-03-05 Author(s): LI CHUN-FANG, GUO GUANG-CAN <br/><p>First we put forward an essential condition, for the existence of the non-zero adiabatic geometric phase of a quantum-mechanical Hamiltonian system, that the Hamiltonian operators at different times do not commute. Then it is shown that constraint =0 determines completely the phase relation of normalized eigenstate vectors │n' (t)&lt; at different times. According to this property, we advance the sufficient and necessary condition for the existence of the non-zero adiabatic geometric phase, which is |n′(T)&lt;≠|n′(0)&lt; when =0. And also we derive a general time-integral formula for the adiabatic geometric phase along the line. Finally, as an application of it, we calculate the geometric phase of a spin 1/2 system once discussed by Solem and Biedenharn. It is pointed out that the problem encountered by them lies in the multi-valuedness of the eigenstate vector in parameter space.</p> <br/>Acta Physica Sinica. 1996 45(6): 897-903. Published 1996-03-05 CONDITIONS FOR THE EXISTENCE OF NON-ZERO GEOMETRIC PHASE AND ITS FORMULA LI CHUN-FANG, GUO GUANG-CAN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 897-903. article doi:10.7498/aps.45.897 10.7498/aps.45.897 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.897 897-903 //www.getgobooth.com/en/article/doi/10.7498/aps.45.904 Author(s): YANG ZHI-AN, CHEN SHI-GANG, WANG GUANG-RUI <br/><p>The topological properties of the delay-time reconstruction transformation of dynamic system are analysed by means of the Jacobian of the transformation. Results show that the topological properties depend not only on the reconstructing dimension, but also on the delay time, and on the conditional stability of a time series itself. The conditional Lyapunov exponent is used to judge whether a time series is good or bad. As an example, the R?ssler system is discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 904-911. Published 1996-03-05 Author(s): YANG ZHI-AN, CHEN SHI-GANG, WANG GUANG-RUI <br/><p>The topological properties of the delay-time reconstruction transformation of dynamic system are analysed by means of the Jacobian of the transformation. Results show that the topological properties depend not only on the reconstructing dimension, but also on the delay time, and on the conditional stability of a time series itself. The conditional Lyapunov exponent is used to judge whether a time series is good or bad. As an example, the R?ssler system is discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 904-911. Published 1996-03-05 ANALYSIS OF TIME SERIES RECONSTRUCTION FOR DYNAMIC SYSTEM YANG ZHI-AN, CHEN SHI-GANG, WANG GUANG-RUI 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 904-911. article doi:10.7498/aps.45.904 10.7498/aps.45.904 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.904 904-911 //www.getgobooth.com/en/article/doi/10.7498/aps.45.912 Author(s): GAO XIAO-CHUN, GAO JUN, FU JIAN <br/><p>The generalized invariant theory is used to study the problem of the diagonalization of the time-evolution operator. It is shown that there is an intimate connection between the diagonalization of the time-evolution operator and the phase factors. As an illustrative example, the quantum motion of an ion in a combined trap is investigated; the classical correspondence of the quantum motion and the stability problem are then discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 912-923. Published 1996-03-05 Author(s): GAO XIAO-CHUN, GAO JUN, FU JIAN <br/><p>The generalized invariant theory is used to study the problem of the diagonalization of the time-evolution operator. It is shown that there is an intimate connection between the diagonalization of the time-evolution operator and the phase factors. As an illustrative example, the quantum motion of an ion in a combined trap is investigated; the classical correspondence of the quantum motion and the stability problem are then discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 912-923. Published 1996-03-05 QUANTUM INVARIANT THEORY AND THE MOTION OF AN ION IN A COMBINED TRAP GAO XIAO-CHUN, GAO JUN, FU JIAN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 912-923. article doi:10.7498/aps.45.912 10.7498/aps.45.912 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.912 912-923 //www.getgobooth.com/en/article/doi/10.7498/aps.45.924 Author(s): ZHU JUN-BIAO, WANG ZHI-JIANG, ZHANG LI-FENG, LU ZAI-TUN, HUANG YU, WANG MING-CHANG <br/><p>High-power ( 200 kV), intense-current-density, low-emittance, high-brightness electron beam was generated in a 10 gap pseudospark chamber filled with 15 Pa N2 and driven by an improved pulse line accelerator. The ejected electron beam was characterized by 1mm diameter, 2. 2 kA beam current, and 400ns pulse length, and propagated 20cm in neutral N2 ionizing channel in the drift tube. At 5 cm downstream of the anode, it penetrated consecutively an acid-sensitive discoloring film and a 0.05 mm-thick copper foil, and left 0.6 mm and 0.3 mm holes on them, separately. According to the pinching equilibrium condition, the beam's normalized emittance and brightness are respectively calculated to be 23 πmm-mrad and 8×1010A/(m rad)2. That the 10 shots on the same acid-sensitive film produced a hole of 1. 6mm in diameter at 7cm showed a good repeatability of the electron beam. After 60 shots the pseudospark chamber was observed that there was almost no destructive damage traces left on the surfaces of the electrodes and insulators. It was found that the quality of electron beam produced in the pseudospark discharge chamber driven by the modified pulse line accelerator is much better than that generated by cold cathode discharges.</p> <br/>Acta Physica Sinica. 1996 45(6): 924-928. Published 1996-03-05 Author(s): ZHU JUN-BIAO, WANG ZHI-JIANG, ZHANG LI-FENG, LU ZAI-TUN, HUANG YU, WANG MING-CHANG <br/><p>High-power ( 200 kV), intense-current-density, low-emittance, high-brightness electron beam was generated in a 10 gap pseudospark chamber filled with 15 Pa N2 and driven by an improved pulse line accelerator. The ejected electron beam was characterized by 1mm diameter, 2. 2 kA beam current, and 400ns pulse length, and propagated 20cm in neutral N2 ionizing channel in the drift tube. At 5 cm downstream of the anode, it penetrated consecutively an acid-sensitive discoloring film and a 0.05 mm-thick copper foil, and left 0.6 mm and 0.3 mm holes on them, separately. According to the pinching equilibrium condition, the beam's normalized emittance and brightness are respectively calculated to be 23 πmm-mrad and 8×1010A/(m rad)2. That the 10 shots on the same acid-sensitive film produced a hole of 1. 6mm in diameter at 7cm showed a good repeatability of the electron beam. After 60 shots the pseudospark chamber was observed that there was almost no destructive damage traces left on the surfaces of the electrodes and insulators. It was found that the quality of electron beam produced in the pseudospark discharge chamber driven by the modified pulse line accelerator is much better than that generated by cold cathode discharges.</p> <br/>Acta Physica Sinica. 1996 45(6): 924-928. Published 1996-03-05 HIGH-POWER, INTENSE-CURRENT-DENSITY, LOW-EMITTANCE, HIGH-BRIGHTNESS PSEUDOSPARK ELECTRON BEAM DRIVEN BY IMPROVED PULSE LINE ACCELERATOR ZHU JUN-BIAO, WANG ZHI-JIANG, ZHANG LI-FENG, LU ZAI-TUN, HUANG YU, WANG MING-CHANG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 924-928. article doi:10.7498/aps.45.924 10.7498/aps.45.924 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.924 924-928 //www.getgobooth.com/en/article/doi/10.7498/aps.45.929 Author(s): ZHAO GUO-ZHONG, PAN SHAO-HUA <br/><p>The optical bistability (OB) of intersubband transitions in a semiconductor superlattice is stu -died by applying the general formalism of the Kronig-Penney model and density matrix method. The Maxwell-Bloch (MB) equations of two-subband model are derived, and the OB state equation for a ring cavity is obtained from the stationary solution of the MB equations. The conditions for realizing the OB and its characteristics are discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 929-939. Published 1996-03-05 Author(s): ZHAO GUO-ZHONG, PAN SHAO-HUA <br/><p>The optical bistability (OB) of intersubband transitions in a semiconductor superlattice is stu -died by applying the general formalism of the Kronig-Penney model and density matrix method. The Maxwell-Bloch (MB) equations of two-subband model are derived, and the OB state equation for a ring cavity is obtained from the stationary solution of the MB equations. The conditions for realizing the OB and its characteristics are discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 929-939. Published 1996-03-05 OPTICAL BISTABILITY OF INTERSUBBAN TRANSITIONS IN A SEMICONDUCTOR SUPERLATTICE ZHAO GUO-ZHONG, PAN SHAO-HUA 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 929-939. article doi:10.7498/aps.45.929 10.7498/aps.45.929 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.929 929-939 //www.getgobooth.com/en/article/doi/10.7498/aps.45.940 Author(s): SUN WAN-JUN, ZHOU ZHONG-XIANG, JIANG YONG-YUAN, LI YAN, XU KE-BIN, ZHU GUI-ZHI <br/><p>The effects of an applied electric field on the recording and erasing characteristics of the fundamental and higher-order harmonics of the space-charge field inside the crystal are observed and measured at wavelength of 633 run with a Ce-doped KNSBN crystal. The experimental results obtained are analyzed and explained.</p> <br/>Acta Physica Sinica. 1996 45(6): 940-945. Published 1996-03-05 Author(s): SUN WAN-JUN, ZHOU ZHONG-XIANG, JIANG YONG-YUAN, LI YAN, XU KE-BIN, ZHU GUI-ZHI <br/><p>The effects of an applied electric field on the recording and erasing characteristics of the fundamental and higher-order harmonics of the space-charge field inside the crystal are observed and measured at wavelength of 633 run with a Ce-doped KNSBN crystal. The experimental results obtained are analyzed and explained.</p> <br/>Acta Physica Sinica. 1996 45(6): 940-945. Published 1996-03-05 EFFECTS OF AN APPLIED ELECTRIC FIELD ON THE SPACE-CHARGE FIELD IN THE DOPED KNSBN CRYSTAL SUN WAN-JUN, ZHOU ZHONG-XIANG, JIANG YONG-YUAN, LI YAN, XU KE-BIN, ZHU GUI-ZHI 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 940-945. article doi:10.7498/aps.45.940 10.7498/aps.45.940 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.940 940-945 //www.getgobooth.com/en/article/doi/10.7498/aps.45.946 Author(s): DONG CHUAN-HUA <br/><p>The higher-order fundamental quantum-mechanical fluctuation is given on the base of the higher-order uncertainty relation, from which the definition of higher-order squeezing for atomic dipole is introduced. As an example, we examine the second-, fourth-and sixth-order squeezing of atomic dipole in the two-photon Jaynes-Cummings model with the two-photon superposition state preparation.</p> <br/>Acta Physica Sinica. 1996 45(6): 946-952. Published 1996-03-05 Author(s): DONG CHUAN-HUA <br/><p>The higher-order fundamental quantum-mechanical fluctuation is given on the base of the higher-order uncertainty relation, from which the definition of higher-order squeezing for atomic dipole is introduced. As an example, we examine the second-, fourth-and sixth-order squeezing of atomic dipole in the two-photon Jaynes-Cummings model with the two-photon superposition state preparation.</p> <br/>Acta Physica Sinica. 1996 45(6): 946-952. Published 1996-03-05 HIGHER-ORDER SQUEEZING OF ATOMIC DIPOLE DONG CHUAN-HUA 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 946-952. article doi:10.7498/aps.45.946 10.7498/aps.45.946 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.946 946-952 //www.getgobooth.com/en/article/doi/10.7498/aps.45.953 Author(s): LI JUN, CHEN QING-MING, LI ZAI-GUANG <br/><p>Ionization in a magnetically confined argon discharge has been studied by the use of a Monte Carlo simulation. Especially, influences of the transverse magnetic field have been investigated for a pressure range of 30 Pa-4 kPa. It is found that the magnetic field acts effectively only in a definite range of pressure( &lt; 600 Pa), and within the range there is an optimum strength for the field. Analyses for the results and consideration of applying the discharge in ion lasers as well as in sputtering-based metal vapor lasers have been given.</p> <br/>Acta Physica Sinica. 1996 45(6): 953-959. Published 1996-03-05 Author(s): LI JUN, CHEN QING-MING, LI ZAI-GUANG <br/><p>Ionization in a magnetically confined argon discharge has been studied by the use of a Monte Carlo simulation. Especially, influences of the transverse magnetic field have been investigated for a pressure range of 30 Pa-4 kPa. It is found that the magnetic field acts effectively only in a definite range of pressure( &lt; 600 Pa), and within the range there is an optimum strength for the field. Analyses for the results and consideration of applying the discharge in ion lasers as well as in sputtering-based metal vapor lasers have been given.</p> <br/>Acta Physica Sinica. 1996 45(6): 953-959. Published 1996-03-05 IONIZATION IN A MAGNETICALLY CONFINED DISCHARGE LI JUN, CHEN QING-MING, LI ZAI-GUANG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 953-959. article doi:10.7498/aps.45.953 10.7498/aps.45.953 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.953 953-959 //www.getgobooth.com/en/article/doi/10.7498/aps.45.960 Author(s): SUN JUN-QIANG, HUANG DE-XIU, LI ZAI-GUANG <br/><p>A novel Er3+- doped ring fiber laser with simple structure is proposed in this paper and self -pulsing is observed under the lower pump parameters. The effects of pump parameters and the length of single mode fiber in the loop on the self-pulse characteristics are investigated experimentally. The results show that the self-pulse characteristics can be controlled by the adjustment of the relative parameters properly.</p> <br/>Acta Physica Sinica. 1996 45(6): 960-965. Published 1996-03-05 Author(s): SUN JUN-QIANG, HUANG DE-XIU, LI ZAI-GUANG <br/><p>A novel Er3+- doped ring fiber laser with simple structure is proposed in this paper and self -pulsing is observed under the lower pump parameters. The effects of pump parameters and the length of single mode fiber in the loop on the self-pulse characteristics are investigated experimentally. The results show that the self-pulse characteristics can be controlled by the adjustment of the relative parameters properly.</p> <br/>Acta Physica Sinica. 1996 45(6): 960-965. Published 1996-03-05 SELF-PULSING IN THE Er3+-DOPED FIBER LASER SUN JUN-QIANG, HUANG DE-XIU, LI ZAI-GUANG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 960-965. article doi:10.7498/aps.45.960 10.7498/aps.45.960 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.960 960-965 //www.getgobooth.com/en/article/doi/10.7498/aps.45.966 Author(s): TANG GUO-QING, YUE ZHENG-SHAN, ZHANG GUI-LAN, CHEN WEN-JU <br/><p>In this paper the theoretical and experimental studies on the properties of phase conjugate (PC) wave and the gratings formed as a result of degenerate four-wave mixing (DFWM) interference field of Ar+ laser in bacteriorhodopsin-polyvinyl alcohol (BR-PVA) solid film are reported. The diffraction efficiency temporary response and saturation property of the PC wave are described by useing a simplified double state model and the method of rate equation combined with a diffraction theory of holograph grating. The mechanism of forming grating in the film and the dependence of the properties mentioned above on polarization states, intensities are analysed. The time of arriving at the sample of three input beams and initial concentration of grating formed in the film are discussed. The theoretical results are in good agreement with the experimental observations.</p> <br/>Acta Physica Sinica. 1996 45(6): 966-976. Published 1996-03-05 Author(s): TANG GUO-QING, YUE ZHENG-SHAN, ZHANG GUI-LAN, CHEN WEN-JU <br/><p>In this paper the theoretical and experimental studies on the properties of phase conjugate (PC) wave and the gratings formed as a result of degenerate four-wave mixing (DFWM) interference field of Ar+ laser in bacteriorhodopsin-polyvinyl alcohol (BR-PVA) solid film are reported. The diffraction efficiency temporary response and saturation property of the PC wave are described by useing a simplified double state model and the method of rate equation combined with a diffraction theory of holograph grating. The mechanism of forming grating in the film and the dependence of the properties mentioned above on polarization states, intensities are analysed. The time of arriving at the sample of three input beams and initial concentration of grating formed in the film are discussed. The theoretical results are in good agreement with the experimental observations.</p> <br/>Acta Physica Sinica. 1996 45(6): 966-976. Published 1996-03-05 TEMPORARY RESPONSE OF PHASE CONJUGATION WAVE AND GRATING PROPERTIES IN BR-PVA FILM IN DFWM FIELD TANG GUO-QING, YUE ZHENG-SHAN, ZHANG GUI-LAN, CHEN WEN-JU 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 966-976. article doi:10.7498/aps.45.966 10.7498/aps.45.966 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.966 966-976 //www.getgobooth.com/en/article/doi/10.7498/aps.45.977 Author(s): HE JIAN, YANG TONG-HUA <br/><p>A new matrix desmearing method in small angle scattering (SAS) has been developed. The feasibilities make it may be applied conveniently to all types of SAS spectrometer which have to use slit collimatior system at the research reactor with low and medium flux. The experimental results show that the method is consistent with the ordinary desmearing method.</p> <br/>Acta Physica Sinica. 1996 45(6): 977-984. Published 1996-03-05 Author(s): HE JIAN, YANG TONG-HUA <br/><p>A new matrix desmearing method in small angle scattering (SAS) has been developed. The feasibilities make it may be applied conveniently to all types of SAS spectrometer which have to use slit collimatior system at the research reactor with low and medium flux. The experimental results show that the method is consistent with the ordinary desmearing method.</p> <br/>Acta Physica Sinica. 1996 45(6): 977-984. Published 1996-03-05 A MATRIX METHOD DESMEARING THE DISTORTION CAUSED BY SLIT COLLIMATOR SYSTEM IN SMALL ANGLE SCATTERING HE JIAN, YANG TONG-HUA 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 977-984. article doi:10.7498/aps.45.977 10.7498/aps.45.977 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.977 977-984 //www.getgobooth.com/en/article/doi/10.7498/aps.45.985 Author(s): HU XIAO-MING, LIN ZHANG-DA <br/><p>Phase transitions on a clean reconstructed Si(100)-c(8×8) surface induced by atomic hydrogen adsorption at different temperatures have been studied using low energy electron diffraction (LEED) . It has been found that: at liquid nitrogen temperature, successive dosing of atomic hydrogen cause the surface go through a series of phase transitions from c(8×8)to(4×l)-H to(2×l)-H and finally to (1×1)- H. At different temperatures from 700×3 down to room temperature, successive saturation doses of atomic hydrogen can induce phase transitions from c(8×8)to c(4×4)-H to (2×1)-H and finally to(1×1)-H.</p> <br/>Acta Physica Sinica. 1996 45(6): 985-989. Published 1996-03-05 Author(s): HU XIAO-MING, LIN ZHANG-DA <br/><p>Phase transitions on a clean reconstructed Si(100)-c(8×8) surface induced by atomic hydrogen adsorption at different temperatures have been studied using low energy electron diffraction (LEED) . It has been found that: at liquid nitrogen temperature, successive dosing of atomic hydrogen cause the surface go through a series of phase transitions from c(8×8)to(4×l)-H to(2×l)-H and finally to (1×1)- H. At different temperatures from 700×3 down to room temperature, successive saturation doses of atomic hydrogen can induce phase transitions from c(8×8)to c(4×4)-H to (2×1)-H and finally to(1×1)-H.</p> <br/>Acta Physica Sinica. 1996 45(6): 985-989. Published 1996-03-05 HYDROGEN ADSORPTION INDUCED PHASE TRANSITIONS ON Si(100) STUDIED BY LEED HU XIAO-MING, LIN ZHANG-DA 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 985-989. article doi:10.7498/aps.45.985 10.7498/aps.45.985 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.985 985-989 //www.getgobooth.com/en/article/doi/10.7498/aps.45.990 Author(s): BAI KUI-CHANG, SU LEI, CHENG LI-ZHI, FENG WEI, HE KAI-YUAN <br/><p>Using M?ssbauer spectroscopy, We have studied the structural characteristics of the alloy phases of three samples formed by the process of mechanical alloying. The starting compositions of these samples are 70B30,Fe55B45 and Fe30B70. The crystallization or transition of the amorphous phases under annealing has also been examined. It was found that a certain relation exist between the amorphous phases and corresponding Fe-B compounds.</p> <br/>Acta Physica Sinica. 1996 45(6): 990-994. Published 1996-03-05 Author(s): BAI KUI-CHANG, SU LEI, CHENG LI-ZHI, FENG WEI, HE KAI-YUAN <br/><p>Using M?ssbauer spectroscopy, We have studied the structural characteristics of the alloy phases of three samples formed by the process of mechanical alloying. The starting compositions of these samples are 70B30,Fe55B45 and Fe30B70. The crystallization or transition of the amorphous phases under annealing has also been examined. It was found that a certain relation exist between the amorphous phases and corresponding Fe-B compounds.</p> <br/>Acta Physica Sinica. 1996 45(6): 990-994. Published 1996-03-05 M?SSBAUER STUDY OF THE MECHANICAL ALLOYING Fe-B ALLOY BAI KUI-CHANG, SU LEI, CHENG LI-ZHI, FENG WEI, HE KAI-YUAN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 990-994. article doi:10.7498/aps.45.990 10.7498/aps.45.990 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.990 990-994 //www.getgobooth.com/en/article/doi/10.7498/aps.45.995 Author(s): GUO DA-QIN, QI WEN-JIE <br/><p>We've investigated the annealing behaviour of the di-carbon centre (zero-phonon line at 969 meV or 7818 cm-1)in float zone and Czochralski silicon crystals. The break-up process is not the only way to destroy the di-carbon centres and it is shown that the presence of other defects may affect the annealing process. After the thermal destruction of the di-carbon centre, we've discovered many previously unreported carbon and oxygen related point defects. Their photolumiescence lines are observed. We suggest that the interstitial silicon atom is the defect trapped near but not ‘at' the di-carbon centre forming the satellite sublines at 951.16(7671), 952.98(7686), and 956.91meV (7717cm-1).</p> <br/>Acta Physica Sinica. 1996 45(6): 995-1002. Published 1996-03-05 Author(s): GUO DA-QIN, QI WEN-JIE <br/><p>We've investigated the annealing behaviour of the di-carbon centre (zero-phonon line at 969 meV or 7818 cm-1)in float zone and Czochralski silicon crystals. The break-up process is not the only way to destroy the di-carbon centres and it is shown that the presence of other defects may affect the annealing process. After the thermal destruction of the di-carbon centre, we've discovered many previously unreported carbon and oxygen related point defects. Their photolumiescence lines are observed. We suggest that the interstitial silicon atom is the defect trapped near but not ‘at' the di-carbon centre forming the satellite sublines at 951.16(7671), 952.98(7686), and 956.91meV (7717cm-1).</p> <br/>Acta Physica Sinica. 1996 45(6): 995-1002. Published 1996-03-05 OPTICAL SPECTRA OF DI-CARBON CENTER AFTER ANNEALING IN SILICON MONOCRYSTAL GUO DA-QIN, QI WEN-JIE 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 995-1002. article doi:10.7498/aps.45.995 10.7498/aps.45.995 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.995 995-1002 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1003 Author(s): YU BAD-LONG, ZHANG GUI-LAN, TANG GUO-QING, WU XIAO-CHUN, CHEN WEN-JU <br/><p>The properties of the surface phonon modes in spherical SnO2 nanometer particles were studied by the method of infrared spectroscopy. The sum total of Frohlich modes of SnO2 nanometer particles were reported in our experiments. The theoretical results of surface mode frequency of SnO2 nanometer particles were presented, which agreed well with those of experiments. Finally, the effects of quantum confinement on the infrared properties of SnO2 nanometer particles were discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1003-1009. Published 1996-03-05 Author(s): YU BAD-LONG, ZHANG GUI-LAN, TANG GUO-QING, WU XIAO-CHUN, CHEN WEN-JU <br/><p>The properties of the surface phonon modes in spherical SnO2 nanometer particles were studied by the method of infrared spectroscopy. The sum total of Frohlich modes of SnO2 nanometer particles were reported in our experiments. The theoretical results of surface mode frequency of SnO2 nanometer particles were presented, which agreed well with those of experiments. Finally, the effects of quantum confinement on the infrared properties of SnO2 nanometer particles were discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1003-1009. Published 1996-03-05 STUDY OF THE SURFACE PHONON MODES INSnO2 NANOMETER PARTICLES BY THE METHOD OF INFRARED SPECTROSCOPY YU BAD-LONG, ZHANG GUI-LAN, TANG GUO-QING, WU XIAO-CHUN, CHEN WEN-JU 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1003-1009. article doi:10.7498/aps.45.1003 10.7498/aps.45.1003 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1003 1003-1009 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1010 Author(s): ZHU XIAN-FANG, SHUI JIA-PENG <br/><p>An accurate linear damping calculation formula for free vibration system has been deduced and the application limits of the corresponding approximate calculation formula has been discussed as well. Finally, the related experimental results have been calculated respectively by the newly-deduced formula and the present approximate one, and the two kinds of calculated results have been compared, analysed, and discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1010-1015. Published 1996-03-05 Author(s): ZHU XIAN-FANG, SHUI JIA-PENG <br/><p>An accurate linear damping calculation formula for free vibration system has been deduced and the application limits of the corresponding approximate calculation formula has been discussed as well. Finally, the related experimental results have been calculated respectively by the newly-deduced formula and the present approximate one, and the two kinds of calculated results have been compared, analysed, and discussed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1010-1015. Published 1996-03-05 ACCURATE LINEAR DAMPING CALCULATION FORMULA FOR FREE VIBRATION SYSTEM ZHU XIAN-FANG, SHUI JIA-PENG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1010-1015. article doi:10.7498/aps.45.1010 10.7498/aps.45.1010 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1010 1010-1015 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1016 Author(s): GE TING-SUI <br/><p>Early since 1950, a systematic study was made on the anomalous internal friction peaks appeared in cold-worked Al-Cu and Al-Mg specimens around room temperature. The activation energy associated with these internal friction peaks was found to be close to that associated with the pipe diffusion along dislocations. Consequently the internal friction peaks were attributed to the diffusion of Cu or Mg atoms in the dislocation core in aluminium. A physical model of these internal friction peaks was suggested in terms of the dislocation kink concept. The manifestation of these anomalous internal friction peaks was found to be similar to that predicted through a detailed mathematical analysis of the dislocation core diffusion by Winkler-Gneiwek et al. according to the string model. In this paper, a critical comparison has been made between the string model and the kink model concerning this problem and it is shown that the predictions derived from the string model can be adequately applied to the case of the kink model. This confirms further that the nonlinear anelastic internal friction peaks we observed are originated from dislocation core diffusion.</p> <br/>Acta Physica Sinica. 1996 45(6): 1016-1025. Published 1996-03-05 Author(s): GE TING-SUI <br/><p>Early since 1950, a systematic study was made on the anomalous internal friction peaks appeared in cold-worked Al-Cu and Al-Mg specimens around room temperature. The activation energy associated with these internal friction peaks was found to be close to that associated with the pipe diffusion along dislocations. Consequently the internal friction peaks were attributed to the diffusion of Cu or Mg atoms in the dislocation core in aluminium. A physical model of these internal friction peaks was suggested in terms of the dislocation kink concept. The manifestation of these anomalous internal friction peaks was found to be similar to that predicted through a detailed mathematical analysis of the dislocation core diffusion by Winkler-Gneiwek et al. according to the string model. In this paper, a critical comparison has been made between the string model and the kink model concerning this problem and it is shown that the predictions derived from the string model can be adequately applied to the case of the kink model. This confirms further that the nonlinear anelastic internal friction peaks we observed are originated from dislocation core diffusion.</p> <br/>Acta Physica Sinica. 1996 45(6): 1016-1025. Published 1996-03-05 NONLINEAR ANELASTIC INTERNAL FRICTION PEAKS ASSOCIATED WITH DISLOCATION CORE DIFFUSION GE TING-SUI 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1016-1025. article doi:10.7498/aps.45.1016 10.7498/aps.45.1016 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1016 1016-1025 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1026 Author(s): CHENG ZHONG-YANG, YAO XI, ZHANG LIANG-YING <br/><p>Evidence has been found that solid solution of 10 mol% lead titanate in lead magnesium niobate bears strong resemblance to spin and dipolar glasses. The frequency dispersion of the temperature of the permittivity maximum, Tm, has been analyzed using the Vogel-Fulcher relationship. The difference between the solid solution and glass was discussed. Based on this analysis, a new ralationship:ω = ω0exp {- (T0/Tm)p},was introduced which is more suitable and effective for relaxor ferroelectrics to analyze the frequency dispersion of the temperature of the permittivity maximum than Vogel-Fulcher relationship. The dielectric relation of the solid solution was measured The results were analyzed using the new relationship, and activation energy of 0.037 eV was obtaived.</p> <br/>Acta Physica Sinica. 1996 45(6): 1026-1032. Published 1996-03-05 Author(s): CHENG ZHONG-YANG, YAO XI, ZHANG LIANG-YING <br/><p>Evidence has been found that solid solution of 10 mol% lead titanate in lead magnesium niobate bears strong resemblance to spin and dipolar glasses. The frequency dispersion of the temperature of the permittivity maximum, Tm, has been analyzed using the Vogel-Fulcher relationship. The difference between the solid solution and glass was discussed. Based on this analysis, a new ralationship:ω = ω0exp {- (T0/Tm)p},was introduced which is more suitable and effective for relaxor ferroelectrics to analyze the frequency dispersion of the temperature of the permittivity maximum than Vogel-Fulcher relationship. The dielectric relation of the solid solution was measured The results were analyzed using the new relationship, and activation energy of 0.037 eV was obtaived.</p> <br/>Acta Physica Sinica. 1996 45(6): 1026-1032. Published 1996-03-05 GLASSY BEHAVIOR IN LEAD MAG-NESIUM NIOBATE RELAXORS CHENG ZHONG-YANG, YAO XI, ZHANG LIANG-YING 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1026-1032. article doi:10.7498/aps.45.1026 10.7498/aps.45.1026 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1026 1026-1032 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1033 Author(s): QIN XIAO-KUI, SHI JING, CHEN HONG, TIAN MING-LIANG, TIAN DE-CHENG <br/><p>Specific heat measurements have been made in K0.3MoO3 and Tl0.3MoO3 using an adiabatic continuous heating method from 100 K to 220 K. It is found that Peierl transitions occur at 177.5 K and 172.3 K for K0.3MoO3 and Tl0.3MoO3 respectively. Analyses of specific heat data near Peierls transitions yield that widths of critical regions are about 6 K and 8 K for K0.3MoO3 and Ti0.3MoO3 respectively and the critical behavior belongs to the three dimensional XY model.</p> <br/>Acta Physica Sinica. 1996 45(6): 1033-1038. Published 1996-03-05 Author(s): QIN XIAO-KUI, SHI JING, CHEN HONG, TIAN MING-LIANG, TIAN DE-CHENG <br/><p>Specific heat measurements have been made in K0.3MoO3 and Tl0.3MoO3 using an adiabatic continuous heating method from 100 K to 220 K. It is found that Peierl transitions occur at 177.5 K and 172.3 K for K0.3MoO3 and Tl0.3MoO3 respectively. Analyses of specific heat data near Peierls transitions yield that widths of critical regions are about 6 K and 8 K for K0.3MoO3 and Ti0.3MoO3 respectively and the critical behavior belongs to the three dimensional XY model.</p> <br/>Acta Physica Sinica. 1996 45(6): 1033-1038. Published 1996-03-05 SPECIFIC-HEAT STUDIES OF THE CRITICAL BEHAVIOR FOR K0.3MoO3 AND Tl0.3MoO3 NEAR PEIERLS TRANSITIONS QIN XIAO-KUI, SHI JING, CHEN HONG, TIAN MING-LIANG, TIAN DE-CHENG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1033-1038. article doi:10.7498/aps.45.1033 10.7498/aps.45.1033 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1033 1033-1038 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1039 Author(s): WANG PING-SHAN, HUANG HUA, CHEN TIAN-CAI, XIA LIAN-SHENG, TAO ZU-CONG <br/><p>The focusing ability of the image charges on annular beams is analyzed, and the image charge is on the conducting foils which are placed perpendicular to the beam axis. The given calculating results can be employed to select the geometrical parameters of the foils for annular beam focusing. The first image charge focusing relativistic klystron amplifier experiment was done to study the effects of the foils on the bunching process. Although the transparancy of the foils to the beam is only 0.88, the results show that the foils do not affect the beam bunching process.</p> <br/>Acta Physica Sinica. 1996 45(6): 1039-1045. Published 1996-03-05 Author(s): WANG PING-SHAN, HUANG HUA, CHEN TIAN-CAI, XIA LIAN-SHENG, TAO ZU-CONG <br/><p>The focusing ability of the image charges on annular beams is analyzed, and the image charge is on the conducting foils which are placed perpendicular to the beam axis. The given calculating results can be employed to select the geometrical parameters of the foils for annular beam focusing. The first image charge focusing relativistic klystron amplifier experiment was done to study the effects of the foils on the bunching process. Although the transparancy of the foils to the beam is only 0.88, the results show that the foils do not affect the beam bunching process.</p> <br/>Acta Physica Sinica. 1996 45(6): 1039-1045. Published 1996-03-05 ANALYSIS OF THE FOCUSING EFFECTS OF CONDUCTING FOILS ON THE RELATIVISTIC ANNULAR BEAMS AND FIRST EXPERIMENT RESULTS OF THE EFFECTS OF THE FOILS ON BEAM BUNCHING WANG PING-SHAN, HUANG HUA, CHEN TIAN-CAI, XIA LIAN-SHENG, TAO ZU-CONG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1039-1045. article doi:10.7498/aps.45.1039 10.7498/aps.45.1039 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1039 1039-1045 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1046 Author(s): ZHANG HONG-FEI, WANG LIANG-ZHU, ZHANG LI-DE, WU XI-JUN <br/><p>The spectra of the dielectric constant vs. the measuring temperature and of the dielectric constant vs. the measuring frequency for the nanostructured rutile bulk samples prepared under different pressures were investigated. It can be observed that when the measuring frequency ω2 times higher than that in the high frequency range. Furthermore, with the increment of the pressure, the dielectric constant rises and dielectric loss decreases and shifts towards the low frequency. For the samples formed under 1.0 GPa, two peaks appear in the spectrum of dielectric constant vs. the measuring temperature, and their peak positions are 50℃ and 300℃ , respectively. According to dielectric polarization theory, it can be supposed that high dielectric constant of nanostructured rutile arises mainly from the electronic relaxation polarization, which takes place inside the particle components of nanostructured rutile, and the rotation direction polarization, which is established in interfaces of nanostructured rutile, The 50℃ peak and the 300 ℃ peak are, respectively, attributed to the electronic relaxation polarization and the rotation direction polarization.</p> <br/>Acta Physica Sinica. 1996 45(6): 1046-1050. Published 1996-03-05 Author(s): ZHANG HONG-FEI, WANG LIANG-ZHU, ZHANG LI-DE, WU XI-JUN <br/><p>The spectra of the dielectric constant vs. the measuring temperature and of the dielectric constant vs. the measuring frequency for the nanostructured rutile bulk samples prepared under different pressures were investigated. It can be observed that when the measuring frequency ω2 times higher than that in the high frequency range. Furthermore, with the increment of the pressure, the dielectric constant rises and dielectric loss decreases and shifts towards the low frequency. For the samples formed under 1.0 GPa, two peaks appear in the spectrum of dielectric constant vs. the measuring temperature, and their peak positions are 50℃ and 300℃ , respectively. According to dielectric polarization theory, it can be supposed that high dielectric constant of nanostructured rutile arises mainly from the electronic relaxation polarization, which takes place inside the particle components of nanostructured rutile, and the rotation direction polarization, which is established in interfaces of nanostructured rutile, The 50℃ peak and the 300 ℃ peak are, respectively, attributed to the electronic relaxation polarization and the rotation direction polarization.</p> <br/>Acta Physica Sinica. 1996 45(6): 1046-1050. Published 1996-03-05 THE DIELECTRIC BEHAVIOR IN NANO-STRUCTURED MATERIALS TiO2(RUTILE) ZHANG HONG-FEI, WANG LIANG-ZHU, ZHANG LI-DE, WU XI-JUN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1046-1050. article doi:10.7498/aps.45.1046 10.7498/aps.45.1046 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1046 1046-1050 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1051 Author(s): YUAN LIN <br/><p>In this paper, it is discussed that when monochromatic light incident normally on an arbitrarly making directional biaxial crystal. The formulas can be deduced for propagating directions of polarized light and the transmittance—reflectances of incident components. An important conclusion isobtained that directions of polarization are always on the refractive planes and the two refractive planes are perpendicular with ecch other. And finally, the numerical results are plotted in curvilineal diagrams for NaNO2, it is seen that the changes of the emergent points of polarized light and that of the reflectances are obvious as the crystal making directions change. These results offer a new possibility for determination of crystal optical constants.</p> <br/>Acta Physica Sinica. 1996 45(6): 1051-1058. Published 1996-03-05 Author(s): YUAN LIN <br/><p>In this paper, it is discussed that when monochromatic light incident normally on an arbitrarly making directional biaxial crystal. The formulas can be deduced for propagating directions of polarized light and the transmittance—reflectances of incident components. An important conclusion isobtained that directions of polarization are always on the refractive planes and the two refractive planes are perpendicular with ecch other. And finally, the numerical results are plotted in curvilineal diagrams for NaNO2, it is seen that the changes of the emergent points of polarized light and that of the reflectances are obvious as the crystal making directions change. These results offer a new possibility for determination of crystal optical constants.</p> <br/>Acta Physica Sinica. 1996 45(6): 1051-1058. Published 1996-03-05 EMERGENT POINTS' LOCUSES OF POLARIZED LIGHT IN BIAXIAL CRYSTAL WITH NORMAL INCIDENCE AS CRYSTAL MAKING DIRECTION CHANGES YUAN LIN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1051-1058. article doi:10.7498/aps.45.1051 10.7498/aps.45.1051 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1051 1051-1058 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1059 Author(s): ZENG LING-ZHI, WANG RONG-PING, JIANG YI-JIAN, ZHU YONG, LIU YU-LONG <br/><p>In this paper, the Merten' s equation and dispersion relation of polaritons in the uniaxial crystal had been deduced from the generalized dispersion relation of the phonon-polariton. Raman spectra of every LO, TO mode and oblique phonons in BaTiO3 and Ce: BaTiO3 single crystals have been recorded, the directional dispersion curves are fitted on the basis of Merten's equation. Raman spectra of A1 polaritons with different wave-vector q have been measured and the high and low frequency dielectric constants in both BaTiO3 and Ce:BaTiO3 are calculated. Two broad asymmetry bands in A1(TO) Raman spectra and the mechanics of structure phase transition in BaTiO3 are also discussed. The influence of Ce on the structure of BaTiO3 single crystal are analysed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1059-1067. Published 1996-03-05 Author(s): ZENG LING-ZHI, WANG RONG-PING, JIANG YI-JIAN, ZHU YONG, LIU YU-LONG <br/><p>In this paper, the Merten' s equation and dispersion relation of polaritons in the uniaxial crystal had been deduced from the generalized dispersion relation of the phonon-polariton. Raman spectra of every LO, TO mode and oblique phonons in BaTiO3 and Ce: BaTiO3 single crystals have been recorded, the directional dispersion curves are fitted on the basis of Merten's equation. Raman spectra of A1 polaritons with different wave-vector q have been measured and the high and low frequency dielectric constants in both BaTiO3 and Ce:BaTiO3 are calculated. Two broad asymmetry bands in A1(TO) Raman spectra and the mechanics of structure phase transition in BaTiO3 are also discussed. The influence of Ce on the structure of BaTiO3 single crystal are analysed.</p> <br/>Acta Physica Sinica. 1996 45(6): 1059-1067. Published 1996-03-05 STUDY ON RAMAN SPECTRA OF POLAR-PHONONS AND POLARITONS IN BaTiO3 AND Ce:BaTiO3 SINGLE CRYSTALS ZENG LING-ZHI, WANG RONG-PING, JIANG YI-JIAN, ZHU YONG, LIU YU-LONG 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1059-1067. article doi:10.7498/aps.45.1059 10.7498/aps.45.1059 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1059 1059-1067 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1068 Author(s): FENG JIA-YOU, LONG CHUN-PING, ZHANG FANG-WEI, ZHENG YI, FAN YU-DIAN <br/><p>Growth of CN films on Si (111) is realized by ionized cluster beam (ICB) deposition. X-ray diffraction (XRD) shows the occurence of β-C3N4 crystal structure in the films. X-ray photoelectron spectra (XPS) shows 20% N incorporated into the films and two peaks are observed in C1s and N1s, core level spectra respectively. Single bonded CN and triple bonded CN were identifies by infrared absorption spectra. Reflection high-energy electron diffraction (RHEED) demonstracted the coexistence of amorphous and crystalline CN compounds. The Knoop hardness of CN films reaches 6200 kgf/mm2.</p> <br/>Acta Physica Sinica. 1996 45(6): 1068-1072. Published 1996-03-05 Author(s): FENG JIA-YOU, LONG CHUN-PING, ZHANG FANG-WEI, ZHENG YI, FAN YU-DIAN <br/><p>Growth of CN films on Si (111) is realized by ionized cluster beam (ICB) deposition. X-ray diffraction (XRD) shows the occurence of β-C3N4 crystal structure in the films. X-ray photoelectron spectra (XPS) shows 20% N incorporated into the films and two peaks are observed in C1s and N1s, core level spectra respectively. Single bonded CN and triple bonded CN were identifies by infrared absorption spectra. Reflection high-energy electron diffraction (RHEED) demonstracted the coexistence of amorphous and crystalline CN compounds. The Knoop hardness of CN films reaches 6200 kgf/mm2.</p> <br/>Acta Physica Sinica. 1996 45(6): 1068-1072. Published 1996-03-05 STRUCTURAL CHARACTERIZATION OF THE CN FILMS FENG JIA-YOU, LONG CHUN-PING, ZHANG FANG-WEI, ZHENG YI, FAN YU-DIAN 1996-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(6): 1068-1072. article doi:10.7498/aps.45.1068 10.7498/aps.45.1068 Acta Physica Sinica 45 6 1996-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.45.1068 1068-1072

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