//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.34.1 Author(s): HE QI-ZHI, YANG JIAN-HUA, CHENG GUO-JUN, YANG RONG-FU <br/><p>By means of quark potential model and Warke approximation, and introducing as compensation intermediate potential (-1)T+JKre(-r/a2) in the phenomenological one gluon exchange quark interaction potential, the pion-nucleon interaction potential is calculated. The phase shifts of p-N scattering in the six channels S11, S31, P11, P31, P13, P33 are determined for the incident pion kinetic energy in the laboratory coordinate system up to 700 MeV. These results are compared with the experimentally determined phase shifts.</p> <br/>Acta Physica Sinica. 1985 34(1): 1-9. Published 2005-05-10 Author(s): HE QI-ZHI, YANG JIAN-HUA, CHENG GUO-JUN, YANG RONG-FU <br/><p>By means of quark potential model and Warke approximation, and introducing as compensation intermediate potential (-1)T+JKre(-r/a2) in the phenomenological one gluon exchange quark interaction potential, the pion-nucleon interaction potential is calculated. The phase shifts of p-N scattering in the six channels S11, S31, P11, P31, P13, P33 are determined for the incident pion kinetic energy in the laboratory coordinate system up to 700 MeV. These results are compared with the experimentally determined phase shifts.</p> <br/>Acta Physica Sinica. 1985 34(1): 1-9. Published 2005-05-10 A SEARCH FOR π-N INTERACTION BY QUARK MODEL HE QI-ZHI, YANG JIAN-HUA, CHENG GUO-JUN, YANG RONG-FU 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 1-9. article doi:10.7498/aps.34.1 10.7498/aps.34.1 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.1 1-9 //www.getgobooth.com/en/article/doi/10.7498/aps.34.10 Author(s): SHE YONG-BO, CHEN YUN-FANG, ZHAO RU-WEN, ZHANG XIU-LAN, PAN GUANG-YAN <br/><p>We have studied the spatially resolved spectra of Allaser produced plasma. In the range from 2300-4000 ? about thirty emission lines have been observed belonging to the neutral, singly and doubly ionized Al species. Their line widths and shifts vary with the distance between the plasma and the Al-target surface. Five lines from differently ionized species have been examined with the aid of the theoretical formula given by Griem, and the distribution of electron density near the target has been determined semi-empirically. We found that the line broadening of the different species coincided well with each other, and could be used as a measure of electron density in the range from 1·1017 to 5·1018cm-3. But the coincidence between the line shifts seems not so good, especially for the lines of 3587 ? of Al II and 3610 ? of Al III. It remains to be further investigated.</p> <br/>Acta Physica Sinica. 1985 34(1): 10-16. Published 2005-05-10 Author(s): SHE YONG-BO, CHEN YUN-FANG, ZHAO RU-WEN, ZHANG XIU-LAN, PAN GUANG-YAN <br/><p>We have studied the spatially resolved spectra of Allaser produced plasma. In the range from 2300-4000 ? about thirty emission lines have been observed belonging to the neutral, singly and doubly ionized Al species. Their line widths and shifts vary with the distance between the plasma and the Al-target surface. Five lines from differently ionized species have been examined with the aid of the theoretical formula given by Griem, and the distribution of electron density near the target has been determined semi-empirically. We found that the line broadening of the different species coincided well with each other, and could be used as a measure of electron density in the range from 1·1017 to 5·1018cm-3. But the coincidence between the line shifts seems not so good, especially for the lines of 3587 ? of Al II and 3610 ? of Al III. It remains to be further investigated.</p> <br/>Acta Physica Sinica. 1985 34(1): 10-16. Published 2005-05-10 ON THE LINE BROADENING AND SHIFTS OF Al-LASER PRODUCED PLASMA SHE YONG-BO, CHEN YUN-FANG, ZHAO RU-WEN, ZHANG XIU-LAN, PAN GUANG-YAN 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 10-16. article doi:10.7498/aps.34.10 10.7498/aps.34.10 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.10 10-16 //www.getgobooth.com/en/article/doi/10.7498/aps.34.17 Author(s): FANG HONG-LIE, G. T. MOORE, M. O. SCULLY <br/><p>In this paper, the effects of an injection signal on the Free-Electron-Laser are investigated. And the reason of and the method for suppressing the break-up of the optical pulses in a Free-Electron-Laser are found.</p> <br/>Acta Physica Sinica. 1985 34(1): 17-23. Published 2005-05-10 Author(s): FANG HONG-LIE, G. T. MOORE, M. O. SCULLY <br/><p>In this paper, the effects of an injection signal on the Free-Electron-Laser are investigated. And the reason of and the method for suppressing the break-up of the optical pulses in a Free-Electron-Laser are found.</p> <br/>Acta Physica Sinica. 1985 34(1): 17-23. Published 2005-05-10 THE EFFECT OF AN INJECTION SIGNAL ON THE FREE-ELECTRON-LASER FANG HONG-LIE, G. T. MOORE, M. O. SCULLY 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 17-23. article doi:10.7498/aps.34.17 10.7498/aps.34.17 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.17 17-23 //www.getgobooth.com/en/article/doi/10.7498/aps.34.24 Author(s): GUO YI-LI, DING HAI-SHU, YAO MIN-YAN, LOU CAI-YUN, LI GANG, ZHOU SHOU-HUAN <br/><p>In this work, the influences of several parameters (molecular density of medium, transition linewidth, photon density of pump laser and nonlinear interaction length) on high pressure H2 stimulated Raman scattering (SRS) threshold and energy transfer efficiency are investigated. The experiments were carried out on a Q(1) line vibration transition (4155 cm-1) SRS. Results of effect of H2 pressure (0 to 24 atm) on the threshold are coincident with the analysis of the combined effect of Dicke-Doppler and collision broadening. The influences of stimulated Raman process (SRP) and four-wave parametric processes (FWPP) on energy transfer efficiency, as well as the role of pressure-dispersion effect on higher order anti-Stokes are also discussed.</p> <br/>Acta Physica Sinica. 1985 34(1): 24-31. Published 2005-05-10 Author(s): GUO YI-LI, DING HAI-SHU, YAO MIN-YAN, LOU CAI-YUN, LI GANG, ZHOU SHOU-HUAN <br/><p>In this work, the influences of several parameters (molecular density of medium, transition linewidth, photon density of pump laser and nonlinear interaction length) on high pressure H2 stimulated Raman scattering (SRS) threshold and energy transfer efficiency are investigated. The experiments were carried out on a Q(1) line vibration transition (4155 cm-1) SRS. Results of effect of H2 pressure (0 to 24 atm) on the threshold are coincident with the analysis of the combined effect of Dicke-Doppler and collision broadening. The influences of stimulated Raman process (SRP) and four-wave parametric processes (FWPP) on energy transfer efficiency, as well as the role of pressure-dispersion effect on higher order anti-Stokes are also discussed.</p> <br/>Acta Physica Sinica. 1985 34(1): 24-31. Published 2005-05-10 THRESHOLD AND ENERGY TRANSFER EFFICIENCY IN HIGH PRESSURE HYDROGEN SRS GUO YI-LI, DING HAI-SHU, YAO MIN-YAN, LOU CAI-YUN, LI GANG, ZHOU SHOU-HUAN 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 24-31. article doi:10.7498/aps.34.24 10.7498/aps.34.24 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.24 24-31 //www.getgobooth.com/en/article/doi/10.7498/aps.34.32 Author(s): XU ZHI-ZHONG, DAI DAO-XUAN, ZOU HUI-LIANG <br/><p>By digital integration, background subtraction and self-deconvolution for SiL2,3VV Auger spectra measured on the cleaved clean Si (111) surface and that with oxygen adsorbed, the partial transition densities of state of clean surface and adsorbed surface are obtained. With reference to other experimental and theoretical results, it could be inferred from these partail transition densities of state that oxygen is adsorbed both in a molecular state and in an atomic state, and in the adsorbed stage the oxide may also be formed.</p> <br/>Acta Physica Sinica. 1985 34(1): 32-38. Published 2005-05-10 Author(s): XU ZHI-ZHONG, DAI DAO-XUAN, ZOU HUI-LIANG <br/><p>By digital integration, background subtraction and self-deconvolution for SiL2,3VV Auger spectra measured on the cleaved clean Si (111) surface and that with oxygen adsorbed, the partial transition densities of state of clean surface and adsorbed surface are obtained. With reference to other experimental and theoretical results, it could be inferred from these partail transition densities of state that oxygen is adsorbed both in a molecular state and in an atomic state, and in the adsorbed stage the oxide may also be formed.</p> <br/>Acta Physica Sinica. 1985 34(1): 32-38. Published 2005-05-10 THE LINE SHAPE ANALYSIS FOR Si L2,3 VV AUGER SPECTRA OF CLEAVED Si (111) SURFACES WITH OXYGEN ADSORBED XU ZHI-ZHONG, DAI DAO-XUAN, ZOU HUI-LIANG 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 32-38. article doi:10.7498/aps.34.32 10.7498/aps.34.32 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.32 32-38 //www.getgobooth.com/en/article/doi/10.7498/aps.34.39 Author(s): YU MEI, LIU JIN, LIU ZUN-XIAO, YANG JI-LIAN, JIN LAN, ZHANG BAI-SHENG, ZHOU HUI-MING <br/><p>Neutron diffraction patterns have been obtained for polycrystalline Y3Fe5-xMnxO12 at 300 K. The fraction of octahedral sites occupied by Mn3+ has been found to be 0.72 for x=0.05 and 1 for x=0.09. The magnetic moments of tetrahedral sites and octahedral sites have been determined respectively for x=0.05 and 0.09. The observed magnetic scattering is consistent with the Neel model and the measured saturation moment.Magnetizations were measured as a function of applied magnetic field from 800 Oe to 10 kOe in the range of 1.5-300 K. Magnetic anisotropy were determined from the approach to saturation, |k1| was found to decrease with Mn3+ content.</p> <br/>Acta Physica Sinica. 1985 34(1): 39-47. Published 2005-05-10 Author(s): YU MEI, LIU JIN, LIU ZUN-XIAO, YANG JI-LIAN, JIN LAN, ZHANG BAI-SHENG, ZHOU HUI-MING <br/><p>Neutron diffraction patterns have been obtained for polycrystalline Y3Fe5-xMnxO12 at 300 K. The fraction of octahedral sites occupied by Mn3+ has been found to be 0.72 for x=0.05 and 1 for x=0.09. The magnetic moments of tetrahedral sites and octahedral sites have been determined respectively for x=0.05 and 0.09. The observed magnetic scattering is consistent with the Neel model and the measured saturation moment.Magnetizations were measured as a function of applied magnetic field from 800 Oe to 10 kOe in the range of 1.5-300 K. Magnetic anisotropy were determined from the approach to saturation, |k1| was found to decrease with Mn3+ content.</p> <br/>Acta Physica Sinica. 1985 34(1): 39-47. Published 2005-05-10 MAGNETIC STRUCTURE AND MAGNETIC PROPERTIES OF Y3Fe5-xMnxO12 YU MEI, LIU JIN, LIU ZUN-XIAO, YANG JI-LIAN, JIN LAN, ZHANG BAI-SHENG, ZHOU HUI-MING 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 39-47. article doi:10.7498/aps.34.39 10.7498/aps.34.39 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.39 39-47 //www.getgobooth.com/en/article/doi/10.7498/aps.34.48 Author(s): WANG ZHAO, MENG ZHAO-FU, WANG YU-MING, WANG WEN-KUI, WANG SONG-TAO <br/><p>In this paper, the crystallization of the amorphous Ni83Cr7Fe3Si4B3 alloy was investigated and its "T-T-T" diagrams under 1 bar and 100 kbar were obtained. The results indicate that the crystallization temperature decreases and the metastable II phase does not form if the amorphous state is subjected to high pressure annealing. In addition, the activation energy of crystallization under 1 bar and 100 kbar was calculated respectively.</p> <br/>Acta Physica Sinica. 1985 34(1): 48-55. Published 2005-05-10 Author(s): WANG ZHAO, MENG ZHAO-FU, WANG YU-MING, WANG WEN-KUI, WANG SONG-TAO <br/><p>In this paper, the crystallization of the amorphous Ni83Cr7Fe3Si4B3 alloy was investigated and its "T-T-T" diagrams under 1 bar and 100 kbar were obtained. The results indicate that the crystallization temperature decreases and the metastable II phase does not form if the amorphous state is subjected to high pressure annealing. In addition, the activation energy of crystallization under 1 bar and 100 kbar was calculated respectively.</p> <br/>Acta Physica Sinica. 1985 34(1): 48-55. Published 2005-05-10 CRYSTALLIZATION OF AMORPHOUS Ni83Cr7Fe3Si4B3 ALLOY UNDER ATMOSPHERE AND HIGH PRESSURE WANG ZHAO, MENG ZHAO-FU, WANG YU-MING, WANG WEN-KUI, WANG SONG-TAO 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 48-55. article doi:10.7498/aps.34.48 10.7498/aps.34.48 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.48 48-55 //www.getgobooth.com/en/article/doi/10.7498/aps.34.56 Author(s): SHEN XUE-CHU, CHU JUN-HAO <br/><p>Far-infrared reflection spectra in the wavenumber region between 15 to 500 cm-1 are obtained and studied for the mixed crystals CdxHg1-xTe with different compositions from 0.18 to 0.45 at the temperatures between 4.2 to 300 K. In addition to the fine structures of the CdTe-like optical phonon reflection band, the complex structure of the HgTe-like band for the low composition sample has been observed, and the dependences of the spectral structures on the composition and the temperature of the samples have also been investigated. The fine structures of the reflection spectra are explained based on the multimode quasi-harmonic oscillator model.By means of the classical oscillator matching method, the curve-fitting calculations are performed for the experimental reflection spectra, and the dielectric function spectra and other optical constants versus frequencies are obtained from a satisfactory fitting.</p> <br/>Acta Physica Sinica. 1985 34(1): 56-64. Published 2005-05-10 Author(s): SHEN XUE-CHU, CHU JUN-HAO <br/><p>Far-infrared reflection spectra in the wavenumber region between 15 to 500 cm-1 are obtained and studied for the mixed crystals CdxHg1-xTe with different compositions from 0.18 to 0.45 at the temperatures between 4.2 to 300 K. In addition to the fine structures of the CdTe-like optical phonon reflection band, the complex structure of the HgTe-like band for the low composition sample has been observed, and the dependences of the spectral structures on the composition and the temperature of the samples have also been investigated. The fine structures of the reflection spectra are explained based on the multimode quasi-harmonic oscillator model.By means of the classical oscillator matching method, the curve-fitting calculations are performed for the experimental reflection spectra, and the dielectric function spectra and other optical constants versus frequencies are obtained from a satisfactory fitting.</p> <br/>Acta Physica Sinica. 1985 34(1): 56-64. Published 2005-05-10 FAR-INFRARED REFLECTION SPECTRA AND THE MULTIMODE MODEL FOR MIXED CRYSTAL CdxHg1-xTe SHEN XUE-CHU, CHU JUN-HAO 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 56-64. article doi:10.7498/aps.34.56 10.7498/aps.34.56 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.56 56-64 //www.getgobooth.com/en/article/doi/10.7498/aps.34.65 Author(s): DING E-JIANG, HUANG ZU-QIA <br/><p>In this paper, we use a kind of singular perturbation method to find the normal solution of the Boltzmann equation with small Knudsen number. It is proved that the secular terms may be removed by improving the Hilbert expansion and Enskog expansion.</p> <br/>Acta Physica Sinica. 1985 34(1): 65-76. Published 2005-05-10 Author(s): DING E-JIANG, HUANG ZU-QIA <br/><p>In this paper, we use a kind of singular perturbation method to find the normal solution of the Boltzmann equation with small Knudsen number. It is proved that the secular terms may be removed by improving the Hilbert expansion and Enskog expansion.</p> <br/>Acta Physica Sinica. 1985 34(1): 65-76. Published 2005-05-10 ON THE SINGULAR PERTURBATION SOLUTION OF BOLTZMANN EQUATION (Ⅰ) DING E-JIANG, HUANG ZU-QIA 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 65-76. article doi:10.7498/aps.34.65 10.7498/aps.34.65 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.65 65-76 //www.getgobooth.com/en/article/doi/10.7498/aps.34.77 Author(s): DING E-JIANG, HUANG ZU-QIA <br/><p>In solving Boltzmann equation with a small Knudson number, we improved Grad expansion and got an "initial layer" solution without secular terms. This solution indicates that high-moment sound waves may exist in gases.</p> <br/>Acta Physica Sinica. 1985 34(1): 77-87. Published 2005-05-10 Author(s): DING E-JIANG, HUANG ZU-QIA <br/><p>In solving Boltzmann equation with a small Knudson number, we improved Grad expansion and got an "initial layer" solution without secular terms. This solution indicates that high-moment sound waves may exist in gases.</p> <br/>Acta Physica Sinica. 1985 34(1): 77-87. Published 2005-05-10 ON THE SINGULAR PERTURBATION SOLUTION OF BOLTZMANN EQUATION (Ⅱ) "INITIAL LAYER" SOLUTION DING E-JIANG, HUANG ZU-QIA 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 77-87. article doi:10.7498/aps.34.77 10.7498/aps.34.77 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.77 77-87 //www.getgobooth.com/en/article/doi/10.7498/aps.34.88 Author(s): SHU CHANG-QING, XU GANG, LIN LEI <br/><p>It is pointed out that more than one temporal and spatial distribution of director angles can be obtained from the interference patterns (varying in space and time) of transmitted polarized (monochromatic and white) light from liquid crystals. When specific physical conditions (e.g. the time variation of the local velocities of nonlinear waves described by shearing director equation of soltons) are taken into account, the above uncertainty can be removed. Detailed discussions on the case of solitons in shearing nematics are given. Numerical calculations show that the spatial distribution of director angles given in Eef. [5] is in contradiction to the directions of velocities of the three dark lines (under white light) observed experimentally if the one-dimensional shearing director equation of solitons is assumed. A distribution of director angles in better agreement with experiments is given.</p> <br/>Acta Physica Sinica. 1985 34(1): 88-96. Published 2005-05-10 Author(s): SHU CHANG-QING, XU GANG, LIN LEI <br/><p>It is pointed out that more than one temporal and spatial distribution of director angles can be obtained from the interference patterns (varying in space and time) of transmitted polarized (monochromatic and white) light from liquid crystals. When specific physical conditions (e.g. the time variation of the local velocities of nonlinear waves described by shearing director equation of soltons) are taken into account, the above uncertainty can be removed. Detailed discussions on the case of solitons in shearing nematics are given. Numerical calculations show that the spatial distribution of director angles given in Eef. [5] is in contradiction to the directions of velocities of the three dark lines (under white light) observed experimentally if the one-dimensional shearing director equation of solitons is assumed. A distribution of director angles in better agreement with experiments is given.</p> <br/>Acta Physica Sinica. 1985 34(1): 88-96. Published 2005-05-10 TEMPORAL AND SPATIAL DISTRIBUTION OF DIRECTOR ANGLES IN SOLITON EXPERIMENTS OF LIQUID CRYSTALS SHU CHANG-QING, XU GANG, LIN LEI 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 88-96. article doi:10.7498/aps.34.88 10.7498/aps.34.88 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.88 88-96 //www.getgobooth.com/en/article/doi/10.7498/aps.34.97 Author(s): TANG HUI, ZHANG LI-YUAN <br/><p>According to the model of the superconducting proximity effect between a nonsimple metal thin film with negative U centers and a thin film of BCS superconductor, we have discussed the gap functions, the electronic density of states and the transition temperature Tc varying with different parameters. Results show that a small density of states due to the -U centers exists in the region of "energy gap". The transition temperature of this kind of sandwich is probably higher than the Tc of the bulk BCS superconductor within certain range of parameters.</p> <br/>Acta Physica Sinica. 1985 34(1): 97-104. Published 2005-05-10 Author(s): TANG HUI, ZHANG LI-YUAN <br/><p>According to the model of the superconducting proximity effect between a nonsimple metal thin film with negative U centers and a thin film of BCS superconductor, we have discussed the gap functions, the electronic density of states and the transition temperature Tc varying with different parameters. Results show that a small density of states due to the -U centers exists in the region of "energy gap". The transition temperature of this kind of sandwich is probably higher than the Tc of the bulk BCS superconductor within certain range of parameters.</p> <br/>Acta Physica Sinica. 1985 34(1): 97-104. Published 2005-05-10 THE PROXIMITY EFFECT BETWEEN A NONSIMPLE METAL WITH-U CENTERS AND A BCS SUPERCONDUCTOR (Ⅱ) TANG HUI, ZHANG LI-YUAN 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 97-104. article doi:10.7498/aps.34.97 10.7498/aps.34.97 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.97 97-104 //www.getgobooth.com/en/article/doi/10.7498/aps.34.105 Author(s): HU GANG, A. GRECOS <br/><p>Starting from the Von Neumanm equation, the exact solution of the transition probability of an oscillator coupled with a thermo-bath is obtained, without the weak coupling approximation. The equilibrium distribution for the oscillator is given expli-citely as well.</p> <br/>Acta Physica Sinica. 1985 34(1): 105-111. Published 2005-05-10 Author(s): HU GANG, A. GRECOS <br/><p>Starting from the Von Neumanm equation, the exact solution of the transition probability of an oscillator coupled with a thermo-bath is obtained, without the weak coupling approximation. The equilibrium distribution for the oscillator is given expli-citely as well.</p> <br/>Acta Physica Sinica. 1985 34(1): 105-111. Published 2005-05-10 THE EXACT SOLUTION OF RELAXATION PROCESS OF AN OSCILLATOR IN A THERMO-BATH HU GANG, A. GRECOS 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 105-111. article doi:10.7498/aps.34.105 10.7498/aps.34.105 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.105 105-111 //www.getgobooth.com/en/article/doi/10.7498/aps.34.112 Author(s): WANG XIE-WEN, WU SI-CHENG <br/><p>The composition of the oxides formed at room temperature in the atmosphere or by rf oxidation on the surfaces of NbN thin films were characterized by means of X-ray photoelectron spectroscopy. The experimental Nb3d spectra show that the interfacial phase formed between NbN substrate and the niobium pentoxide is different from the case of pure niobium. It is Nb2O3 but not a mixture of NbO and NbO2. The surface of NbN seems to have the ability of protecting itself from the formation of conducting suboxides such as Nb2O, NbO etc. This is useful for improving the quality of the superconducting tunnel junction with oxide barrier.</p> <br/>Acta Physica Sinica. 1985 34(1): 112-116. Published 2005-05-10 Author(s): WANG XIE-WEN, WU SI-CHENG <br/><p>The composition of the oxides formed at room temperature in the atmosphere or by rf oxidation on the surfaces of NbN thin films were characterized by means of X-ray photoelectron spectroscopy. The experimental Nb3d spectra show that the interfacial phase formed between NbN substrate and the niobium pentoxide is different from the case of pure niobium. It is Nb2O3 but not a mixture of NbO and NbO2. The surface of NbN seems to have the ability of protecting itself from the formation of conducting suboxides such as Nb2O, NbO etc. This is useful for improving the quality of the superconducting tunnel junction with oxide barrier.</p> <br/>Acta Physica Sinica. 1985 34(1): 112-116. Published 2005-05-10 XPS STUDY OF THE OXIDES ON THE SURFACE OF NbN THIN FILM WANG XIE-WEN, WU SI-CHENG 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 112-116. article doi:10.7498/aps.34.112 10.7498/aps.34.112 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.112 112-116 //www.getgobooth.com/en/article/doi/10.7498/aps.34.117 Author(s): YAO JIE, CHEN BAO-QIONG, WANG HONG-KAI <br/><p>This paper describes an effect of the inversion of silicon single crystal from p-type to n-type by the irradiation of ruby pulsed laser. This effect is a function of the impurity compensation but independent of the oxygen content, the crystal cut and the crystal-growing process. Experimental results show that p-type silicon crystals with phosphorus impurity compensation higher than 7% are susceptible to inversion by pulsed laser irradiation when the amount of impurity compensation increases and the distribution of impurity compensation changes. The concentration profile of phosphorus atoms is given by SIMA technique.</p> <br/>Acta Physica Sinica. 1985 34(1): 117-120. Published 2005-05-10 Author(s): YAO JIE, CHEN BAO-QIONG, WANG HONG-KAI <br/><p>This paper describes an effect of the inversion of silicon single crystal from p-type to n-type by the irradiation of ruby pulsed laser. This effect is a function of the impurity compensation but independent of the oxygen content, the crystal cut and the crystal-growing process. Experimental results show that p-type silicon crystals with phosphorus impurity compensation higher than 7% are susceptible to inversion by pulsed laser irradiation when the amount of impurity compensation increases and the distribution of impurity compensation changes. The concentration profile of phosphorus atoms is given by SIMA technique.</p> <br/>Acta Physica Sinica. 1985 34(1): 117-120. Published 2005-05-10 INVERSION OF p-TYPE SILICON TO n-TYPE BY PULSED LASER IRRADIATION YAO JIE, CHEN BAO-QIONG, WANG HONG-KAI 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 117-120. article doi:10.7498/aps.34.117 10.7498/aps.34.117 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.117 117-120 //www.getgobooth.com/en/article/doi/10.7498/aps.34.121 Author(s): LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG, ZHANG YU-CHANG <br/><p>The M?ssbauer spectra of 80 ? magnetite particles before and after coating with the three different organic surfactants were measured. The M?ssbauer spectra after coating appear as dispersion to a different degree with the different organism. When magnetic field (8 kOe) was applied, the superparamagnetic spectra for all sample disappeared and the spectra appeared as sextets. The experimental results showed that the organism produce pinning of the spin of the iron ions on the magnetite particle surface. The depth of pinning with and without applied magnetic field were calculated.</p> <br/>Acta Physica Sinica. 1985 34(1): 121-125. Published 2005-05-10 Author(s): LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG, ZHANG YU-CHANG <br/><p>The M?ssbauer spectra of 80 ? magnetite particles before and after coating with the three different organic surfactants were measured. The M?ssbauer spectra after coating appear as dispersion to a different degree with the different organism. When magnetic field (8 kOe) was applied, the superparamagnetic spectra for all sample disappeared and the spectra appeared as sextets. The experimental results showed that the organism produce pinning of the spin of the iron ions on the magnetite particle surface. The depth of pinning with and without applied magnetic field were calculated.</p> <br/>Acta Physica Sinica. 1985 34(1): 121-125. Published 2005-05-10 INVESTIGATION ON SPIN PINNING EFFECT OF THE MAGNETITE PARTICLE SURFACE COATED WITH ORGANISM LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG, ZHANG YU-CHANG 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 121-125. article doi:10.7498/aps.34.121 10.7498/aps.34.121 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.121 121-125 //www.getgobooth.com/en/article/doi/10.7498/aps.34.126 Author(s): WANG HUAN-YUAN, JIA WEI-YI, SHEN JING-XING <br/><p>The dispersion relation of magneto-optic Faraday rotation in crystal Bi4Ge3O12 was measured in the visible region. The variation of Faraday rotation with temperature was also measured at 633 nm between room temperature and liquid nitrogen temperature. Large Faraday rotation together with high transparency in wide wave length region makes it a valuable magneto-optic material as well. The important role of Bi ions in diamagnetic crystal in magneto-optic rotation was briefly discussed.</p> <br/>Acta Physica Sinica. 1985 34(1): 126-128. Published 2005-05-10 Author(s): WANG HUAN-YUAN, JIA WEI-YI, SHEN JING-XING <br/><p>The dispersion relation of magneto-optic Faraday rotation in crystal Bi4Ge3O12 was measured in the visible region. The variation of Faraday rotation with temperature was also measured at 633 nm between room temperature and liquid nitrogen temperature. Large Faraday rotation together with high transparency in wide wave length region makes it a valuable magneto-optic material as well. The important role of Bi ions in diamagnetic crystal in magneto-optic rotation was briefly discussed.</p> <br/>Acta Physica Sinica. 1985 34(1): 126-128. Published 2005-05-10 MAGNETO-OPTICAL FARADAY ROTATION IN Bi4Ge3O12 CRYSTAL WANG HUAN-YUAN, JIA WEI-YI, SHEN JING-XING 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 126-128. article doi:10.7498/aps.34.126 10.7498/aps.34.126 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.126 126-128 //www.getgobooth.com/en/article/doi/10.7498/aps.34.129 Author(s): LIU PENG-XIA, JIAO HONG-ZHEN, ZHANG YU-CHANG, LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG <br/><p>The M?ssbauer spectra for the M-, W- and X-type hexagonal barium ferrites were measured. We obtained the M?ssbauer spectra parameters of the M- and W-type ferrites, using the method of trial and error of a number of superposed six-line Lorentzian spectra with experimental spectra. In crystallographic consideration the X-type ferrites may by regarded as a superposition of M- and W-type. Then we obtained eleven six-line sub-spectra of the X-type with good fitting of experimental data.</p> <br/>Acta Physica Sinica. 1985 34(1): 129-133. Published 2005-05-10 Author(s): LIU PENG-XIA, JIAO HONG-ZHEN, ZHANG YU-CHANG, LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG <br/><p>The M?ssbauer spectra for the M-, W- and X-type hexagonal barium ferrites were measured. We obtained the M?ssbauer spectra parameters of the M- and W-type ferrites, using the method of trial and error of a number of superposed six-line Lorentzian spectra with experimental spectra. In crystallographic consideration the X-type ferrites may by regarded as a superposition of M- and W-type. Then we obtained eleven six-line sub-spectra of the X-type with good fitting of experimental data.</p> <br/>Acta Physica Sinica. 1985 34(1): 129-133. Published 2005-05-10 INVESTIGATION OF M-, W-, X-TYPE HEXAGONAL BARIUM FERRITES M?SSBAUER SPECTRA LIU PENG-XIA, JIAO HONG-ZHEN, ZHANG YU-CHANG, LU HUAI-XIAN, DU YOU-WEI, WANG TING-XIANG 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 129-133. article doi:10.7498/aps.34.129 10.7498/aps.34.129 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.129 129-133 //www.getgobooth.com/en/article/doi/10.7498/aps.34.134 Author(s): PAN ZHENG-LIANG, WANG SHUANG-QUAN, LI GUANG-YI <br/><p>The fatigue crack length a and the changes of ultrasonic attenuation △α at frequency 10 MHz 011 compact test sample of 30CrMnSiNi2A steel have been simutane-uosly measured as a function of fatigue cycle number N. It was shown that the △α(N) curve was in good response to the a(N) curve and the △α was traced out during the period of crack nucleation. The ultrasonic attenuation a as a function of load P in pulsating tension fatigue test has been investigated. When Pc, where Pc is a critical load, a decreases wth increase of the load; when P&lt;Pc, a increases rapidly with increase of the load. A depinning model of dislocations is suggested. The ultrasonic attenuation is a very useful tool for studying the growth of fatigue crack.</p> <br/>Acta Physica Sinica. 1985 34(1): 134-139. Published 2005-05-10 Author(s): PAN ZHENG-LIANG, WANG SHUANG-QUAN, LI GUANG-YI <br/><p>The fatigue crack length a and the changes of ultrasonic attenuation △α at frequency 10 MHz 011 compact test sample of 30CrMnSiNi2A steel have been simutane-uosly measured as a function of fatigue cycle number N. It was shown that the △α(N) curve was in good response to the a(N) curve and the △α was traced out during the period of crack nucleation. The ultrasonic attenuation a as a function of load P in pulsating tension fatigue test has been investigated. When Pc, where Pc is a critical load, a decreases wth increase of the load; when P&lt;Pc, a increases rapidly with increase of the load. A depinning model of dislocations is suggested. The ultrasonic attenuation is a very useful tool for studying the growth of fatigue crack.</p> <br/>Acta Physica Sinica. 1985 34(1): 134-139. Published 2005-05-10 ULTRASONIC ATTENUATION IN STEEL DURING FATIGUE PAN ZHENG-LIANG, WANG SHUANG-QUAN, LI GUANG-YI 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 134-139. article doi:10.7498/aps.34.134 10.7498/aps.34.134 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.134 134-139 //www.getgobooth.com/en/article/doi/10.7498/aps.34.140 Author(s): SHI ZI-KANG, JIANG AI-DONG, YE HAI-TAO, CHEN CHUANG-TIAN <br/><p>We investigated systimatically the electrical properties of the barium metaborate crystal in low temperature phases and found a new type of pyroelectric crystal materials, the single crystal samples of which grew in our laboratory. According to experimental investigations on many of its physical propenties, such as the dicalectric constant, de-resistivity, loss angle, pyroelectric coefficient, Cp, as well as transparency, it may be expected that this material would be useful for application in high power infrared pyroelectric detectors.</p> <br/>Acta Physica Sinica. 1985 34(1): 140-144. Published 2005-05-10 Author(s): SHI ZI-KANG, JIANG AI-DONG, YE HAI-TAO, CHEN CHUANG-TIAN <br/><p>We investigated systimatically the electrical properties of the barium metaborate crystal in low temperature phases and found a new type of pyroelectric crystal materials, the single crystal samples of which grew in our laboratory. According to experimental investigations on many of its physical propenties, such as the dicalectric constant, de-resistivity, loss angle, pyroelectric coefficient, Cp, as well as transparency, it may be expected that this material would be useful for application in high power infrared pyroelectric detectors.</p> <br/>Acta Physica Sinica. 1985 34(1): 140-144. Published 2005-05-10 ELECTRICAL PROPERTIES OF A NEW PYROELECTRIC BARIUM METABORATE CRYSTAL IN LOW TEMPERA-TURE PHASES AND ITS POTENTIAL APPLICA-TION IN INFRARED PYROELECTRIC DETECTOR SHI ZI-KANG, JIANG AI-DONG, YE HAI-TAO, CHEN CHUANG-TIAN 2005-05-10 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1985 34(1): 140-144. article doi:10.7498/aps.34.140 10.7498/aps.34.140 Acta Physica Sinica 34 1 2005-05-10 //www.getgobooth.com/en/article/doi/10.7498/aps.34.140 140-144

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