//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:39 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:39 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.21.1591 Author(s): CHEN LIN-TANG, CHOW TUNG-CHING <br/><p>Line profiles and shifts of the Mg II 4481? line (32D-42F) were measured for a range of electron number densities from 7×1016 to 3.1×1017 clectrons/c.c. An oscillatory condenser discharge was used as a spectroscopic source. Electron-number densities were determined from measured widths of the Hβ line after addition of water vapour to the source. Good fit of the experimental contour of Hβ with the theoretical contour based on Griem-Kolb-Shen's calculation was observed. Experimental shifts toward the violet were measured to be proportion to the square of the normal microfield. An empirical quadratic Stark effect constant C4= 5.0×10-14cm4/sec was determined from these data. The widths of the line profile bear a similar relation with the fields. Ratios of the width to shift, r/△, were found to remain constant in the range of experimental conditions studied. The value is r/△ = 10.4±0.6. Theoretical calculation of the shift of the upper term 42F due to the quadratic Stark effect perturbation of 42D term allows one to explain the quadratic dependence on field, but the values of shift are smaller in comparison with experimental data, indicating an additional contribution by electrons. The widths of the line have been compared with the theoretical formula of Lindholm and Griem et al's approximate formula. Simple estimate shows a better agreement with the latter.</p> <br/>Acta Physica Sinica. 1965 21(9): 1591-1605. Published 2005-08-05 Author(s): CHEN LIN-TANG, CHOW TUNG-CHING <br/><p>Line profiles and shifts of the Mg II 4481? line (32D-42F) were measured for a range of electron number densities from 7×1016 to 3.1×1017 clectrons/c.c. An oscillatory condenser discharge was used as a spectroscopic source. Electron-number densities were determined from measured widths of the Hβ line after addition of water vapour to the source. Good fit of the experimental contour of Hβ with the theoretical contour based on Griem-Kolb-Shen's calculation was observed. Experimental shifts toward the violet were measured to be proportion to the square of the normal microfield. An empirical quadratic Stark effect constant C4= 5.0×10-14cm4/sec was determined from these data. The widths of the line profile bear a similar relation with the fields. Ratios of the width to shift, r/△, were found to remain constant in the range of experimental conditions studied. The value is r/△ = 10.4±0.6. Theoretical calculation of the shift of the upper term 42F due to the quadratic Stark effect perturbation of 42D term allows one to explain the quadratic dependence on field, but the values of shift are smaller in comparison with experimental data, indicating an additional contribution by electrons. The widths of the line have been compared with the theoretical formula of Lindholm and Griem et al's approximate formula. Simple estimate shows a better agreement with the latter.</p> <br/>Acta Physica Sinica. 1965 21(9): 1591-1605. Published 2005-08-05 WIDTH AND SHIFT OF THE Mg II 4481? LINE FROM A PLASMA SOURCE CHEN LIN-TANG, CHOW TUNG-CHING 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1591-1605. article doi:10.7498/aps.21.1591 10.7498/aps.21.1591 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1591 1591-1605 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1606 Author(s): HONG MING-YUAN, YEH MOW-FOH, SUN HSIANG <br/><p>The Stark broadening of Balmer lines in a hydrogen plasma produced by induced magnetic field has been investigated. A condenser bank discharging into the coil surrounding the discharge tube, produces an alternating axial magnetic field which ionizes, compresses, and heats the hydrogen in the tube. The working conditions are: initial pressure of hydrogen, 2.0×10-1mm Hg; charging voltage, 20 kV; discharge period, 14 microseconds; maximum current, 165 kA. Profiles of the spectral lines of Hβ and Hγ are studied by the photographic method. These lines are considerably broadened. In the whole luminous stage, the mean half-widths of Hβ and Hγ are 14-16? and 18-19? respectively, corresponding to an ion density of 1.7-2.5×1016cm-3. The experimental profiles agree better with Griem, Kolb, and Shen's theory than with Holtsmark's theory. Photo-electrical measurements show that the profile of Hβ changes with time, accordingly the ion density changes also. At the primary current maximum of the third half-period of discharge, the ion density reaches a peak value of 3.2×1016cm-3 which is 2.2 times the initial density of hydrogen atoms.</p> <br/>Acta Physica Sinica. 1965 21(9): 1606-1618. Published 2005-08-05 Author(s): HONG MING-YUAN, YEH MOW-FOH, SUN HSIANG <br/><p>The Stark broadening of Balmer lines in a hydrogen plasma produced by induced magnetic field has been investigated. A condenser bank discharging into the coil surrounding the discharge tube, produces an alternating axial magnetic field which ionizes, compresses, and heats the hydrogen in the tube. The working conditions are: initial pressure of hydrogen, 2.0×10-1mm Hg; charging voltage, 20 kV; discharge period, 14 microseconds; maximum current, 165 kA. Profiles of the spectral lines of Hβ and Hγ are studied by the photographic method. These lines are considerably broadened. In the whole luminous stage, the mean half-widths of Hβ and Hγ are 14-16? and 18-19? respectively, corresponding to an ion density of 1.7-2.5×1016cm-3. The experimental profiles agree better with Griem, Kolb, and Shen's theory than with Holtsmark's theory. Photo-electrical measurements show that the profile of Hβ changes with time, accordingly the ion density changes also. At the primary current maximum of the third half-period of discharge, the ion density reaches a peak value of 3.2×1016cm-3 which is 2.2 times the initial density of hydrogen atoms.</p> <br/>Acta Physica Sinica. 1965 21(9): 1606-1618. Published 2005-08-05 THE STARK BROADENING OF BALMER LINES IN A HYDROGEN PLASMA PRODUCED BY INDUCED MAGNETIC FIELD HONG MING-YUAN, YEH MOW-FOH, SUN HSIANG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1606-1618. article doi:10.7498/aps.21.1606 10.7498/aps.21.1606 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1606 1606-1618 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1619 Author(s): LEI HSIAO-LIN <br/><p>The theory developed in reference [1] has been extended to thicker films. The compensation equation and current equation are derived for superconducting films in a magnetic field, on the basis of a model which assumes the energy-gap function to be constant over the whole film and by means of Schrieffer's technique. The equations obtained are applied to discuss the influence of an external magnetic field on the superconducting properties of a metallic film and its transition changes. The formulas for determining energy-gap, magnetic moment, and critical fields Hc, H(c1) and H(c2) which correspond respectively to equilibrium transition and to boundaries of supercooled and superheated region, are given. All the expressions have been reduced to the well-known results of the Ginzburg-Landau theory in the local limit and to those of reference [1] in the thin film limit. Non-local effects in the general case have been discussed in detail.</p> <br/>Acta Physica Sinica. 1965 21(9): 1619-1637. Published 2005-08-05 Author(s): LEI HSIAO-LIN <br/><p>The theory developed in reference [1] has been extended to thicker films. The compensation equation and current equation are derived for superconducting films in a magnetic field, on the basis of a model which assumes the energy-gap function to be constant over the whole film and by means of Schrieffer's technique. The equations obtained are applied to discuss the influence of an external magnetic field on the superconducting properties of a metallic film and its transition changes. The formulas for determining energy-gap, magnetic moment, and critical fields Hc, H(c1) and H(c2) which correspond respectively to equilibrium transition and to boundaries of supercooled and superheated region, are given. All the expressions have been reduced to the well-known results of the Ginzburg-Landau theory in the local limit and to those of reference [1] in the thin film limit. Non-local effects in the general case have been discussed in detail.</p> <br/>Acta Physica Sinica. 1965 21(9): 1619-1637. Published 2005-08-05 SUPERCONDUCTING FILMS IN A MAGNETIC FIELD LEI HSIAO-LIN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1619-1637. article doi:10.7498/aps.21.1619 10.7498/aps.21.1619 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1619 1619-1637 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1638 Author(s): LI JI-SHI, ZHANG SI-YUAN, ZHANG SI-JUN <br/><p>By making use of the method of quantum field theory, the A.C. magnetoresistance, the Hall effect, and the cyclotron resonance phenomena in electron-phonon system are investigated. The relaxation times and effective masses, which depend on the frequency of external electric field ω and intensity of static magnetic field H, and the strict expression for the line shape of cyclotron resonance are obtained in this way. In our work, the effect of Coulumb interaction between electrons, the effect of quantization of orbital motion, and the influence of alternating electric field have been taken into account.</p> <br/>Acta Physica Sinica. 1965 21(9): 1638-1652. Published 2005-08-05 Author(s): LI JI-SHI, ZHANG SI-YUAN, ZHANG SI-JUN <br/><p>By making use of the method of quantum field theory, the A.C. magnetoresistance, the Hall effect, and the cyclotron resonance phenomena in electron-phonon system are investigated. The relaxation times and effective masses, which depend on the frequency of external electric field ω and intensity of static magnetic field H, and the strict expression for the line shape of cyclotron resonance are obtained in this way. In our work, the effect of Coulumb interaction between electrons, the effect of quantization of orbital motion, and the influence of alternating electric field have been taken into account.</p> <br/>Acta Physica Sinica. 1965 21(9): 1638-1652. Published 2005-08-05 QUANTUM THEORY OF GALVANOMAGNETIC PHENOMENA IN ELECTRON-PHONON SYSTEM LI JI-SHI, ZHANG SI-YUAN, ZHANG SI-JUN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1638-1652. article doi:10.7498/aps.21.1638 10.7498/aps.21.1638 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1638 1638-1652 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1653 Author(s): HUANG HUNG-CHIA, FAN DIAN-YUAN <br/><p>In this paper, the authors have derived a general set of coupled-mode equations for wave propagation in a wave-guide partially filled with gyromagnetic medium. With these equations, they have investigated the problem of Faraday rotation in a longitudinally magnetized ferrite rod with tapering cross-sections at both ends. Additional problems, e.g., the reflection from the ferrite rod and the effect of geometrical irregularity of the rod on the Faraday rotation, have been subsequently attacked by the same coupled-mode approach. It is shown that the coupled-mode theory is admirably suitable for the important problems herein treated. It would be extremely difficult to discuss these problems with any standard method more commonly used in the study of microwave ferrites.</p> <br/>Acta Physica Sinica. 1965 21(9): 1653-1667. Published 2005-08-05 Author(s): HUANG HUNG-CHIA, FAN DIAN-YUAN <br/><p>In this paper, the authors have derived a general set of coupled-mode equations for wave propagation in a wave-guide partially filled with gyromagnetic medium. With these equations, they have investigated the problem of Faraday rotation in a longitudinally magnetized ferrite rod with tapering cross-sections at both ends. Additional problems, e.g., the reflection from the ferrite rod and the effect of geometrical irregularity of the rod on the Faraday rotation, have been subsequently attacked by the same coupled-mode approach. It is shown that the coupled-mode theory is admirably suitable for the important problems herein treated. It would be extremely difficult to discuss these problems with any standard method more commonly used in the study of microwave ferrites.</p> <br/>Acta Physica Sinica. 1965 21(9): 1653-1667. Published 2005-08-05 THE COUPLED-MODE THEORY OF WAVE PROPAGATION THROUGH FERRITE ROD WITH VARIABLE CROSS-SECTION HUANG HUNG-CHIA, FAN DIAN-YUAN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1653-1667. article doi:10.7498/aps.21.1653 10.7498/aps.21.1653 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1653 1653-1667 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1668 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1668-1680. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1668-1680. Published 2005-08-05 PACлPOCTPAHEHиE злEKTPOMAгHиTHblX BOлH B лAPAллEлbHblX лЛAHKAX BOлHOBOдA. 3AлOдHEHHOгO дBYMя дизлEKTPичECKиMи лЛACTиHKAMи 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1668-1680. article doi:10.7498/aps.21.1668 10.7498/aps.21.1668 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1668 1668-1680 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1681 Author(s): WANG CHI-MIN, WANG ZAI-FO, DOU CHUNG-WEI, KUO MOU-DUAN <br/><p>The high temperature deformation of Al-3% Mg and Al-6% Mg alloys has been investigated by differential tensile tests. The activation energies, activation volumes and frequency factors at different temperatures have been obtained. The controlling deformation mechanism in the temperature range 250-400℃ is proved to be possibly due to the non-conservative motion of jogged screw dislocations. The deformation equation is ε=Nιjb2zAνexp{-(△Hs-ιjb2τ)/(kT)}. Thereafter the jog spacings, dislocation densities, jog densities and dislocation velocities at different temperatures are calculated for both alloys. In the above equation ε is the strain rate, b the Burgers vector, Z the coordination number, A the entropy factor, v an atomic frequency, △Hs the self-diffusion coefficient, τ the applied shear stress, k Boltzmann's constant and T the absolute temperature.</p> <br/>Acta Physica Sinica. 1965 21(9): 1681-1688. Published 2005-08-05 Author(s): WANG CHI-MIN, WANG ZAI-FO, DOU CHUNG-WEI, KUO MOU-DUAN <br/><p>The high temperature deformation of Al-3% Mg and Al-6% Mg alloys has been investigated by differential tensile tests. The activation energies, activation volumes and frequency factors at different temperatures have been obtained. The controlling deformation mechanism in the temperature range 250-400℃ is proved to be possibly due to the non-conservative motion of jogged screw dislocations. The deformation equation is ε=Nιjb2zAνexp{-(△Hs-ιjb2τ)/(kT)}. Thereafter the jog spacings, dislocation densities, jog densities and dislocation velocities at different temperatures are calculated for both alloys. In the above equation ε is the strain rate, b the Burgers vector, Z the coordination number, A the entropy factor, v an atomic frequency, △Hs the self-diffusion coefficient, τ the applied shear stress, k Boltzmann's constant and T the absolute temperature.</p> <br/>Acta Physica Sinica. 1965 21(9): 1681-1688. Published 2005-08-05 MECHANISM OF HIGH-TEMPERATURE DEFORMATION IN Al-Mg ALLOYS WANG CHI-MIN, WANG ZAI-FO, DOU CHUNG-WEI, KUO MOU-DUAN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1681-1688. article doi:10.7498/aps.21.1681 10.7498/aps.21.1681 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1681 1681-1688 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1689 Author(s): KWO SHE-HUNG <br/><p>Assuming that the vacuum Regge poles become a complex conjugate pair when t-3. In order that the total cross sections approach constant values, the number of fireballs should increase with In s.</p> <br/>Acta Physica Sinica. 1965 21(9): 1689-1696. Published 2005-08-05 Author(s): KWO SHE-HUNG <br/><p>Assuming that the vacuum Regge poles become a complex conjugate pair when t-3. In order that the total cross sections approach constant values, the number of fireballs should increase with In s.</p> <br/>Acta Physica Sinica. 1965 21(9): 1689-1696. Published 2005-08-05 ASYMPTOTIC BEHAVIOUR OF SCATTERING AMPLITUDE AND HIGH ENERGY INELASTIC PROCESSES KWO SHE-HUNG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1689-1696. article doi:10.7498/aps.21.1689 10.7498/aps.21.1689 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1689 1689-1696 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1697 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1697-1699. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1697-1699. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1697-1699. article doi:10.7498/aps.21.1697 10.7498/aps.21.1697 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1697 1697-1699 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1700 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1700-1704. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1700-1704. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1700-1704. article doi:10.7498/aps.21.1700 10.7498/aps.21.1700 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1700 1700-1704 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1705 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1705-1710. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(9): 1705-1710. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(9): 1705-1710. article doi:10.7498/aps.21.1705 10.7498/aps.21.1705 Acta Physica Sinica 21 9 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.1705 1705-1710

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