//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.21.481 Author(s): LI YIN-YUAN, CHU KE-HONG <br/><p>For considering the electron-phonon coupling in the problem of impurity absorption band, a set of normal modes of lattice vibration were formed by the linear combination of plane (running) waves in order to present fully the site symmetry of the impurity. The symmetric (standing) waves of a definite type are characterized by an irreducible representation of the site group. The frequency distribution function of the phonons of a certain symmetry type is that of the lattice vibration divided by a constant. The phonons involved in the transition of an absorption band are restricted to certain symmetry types but no selection on the frequency may be found. The configuration coordinate approximation of Williams et al. was critically examined at this stage. The dependence of the coupling strength on the frequency of phonons was qualitatively discussed and the possible importance of the critical points of the frequency distribution was remarked. The mathematical analysis of symmetric standing waves was given in details. The relation between this set of normal modes of lattice vibration and those of an isolated cluster containing a central ion and the ligands was demonstrated.</p> <br/>Acta Physica Sinica. 1965 21(3): 481-495. Published 2005-08-05 Author(s): LI YIN-YUAN, CHU KE-HONG <br/><p>For considering the electron-phonon coupling in the problem of impurity absorption band, a set of normal modes of lattice vibration were formed by the linear combination of plane (running) waves in order to present fully the site symmetry of the impurity. The symmetric (standing) waves of a definite type are characterized by an irreducible representation of the site group. The frequency distribution function of the phonons of a certain symmetry type is that of the lattice vibration divided by a constant. The phonons involved in the transition of an absorption band are restricted to certain symmetry types but no selection on the frequency may be found. The configuration coordinate approximation of Williams et al. was critically examined at this stage. The dependence of the coupling strength on the frequency of phonons was qualitatively discussed and the possible importance of the critical points of the frequency distribution was remarked. The mathematical analysis of symmetric standing waves was given in details. The relation between this set of normal modes of lattice vibration and those of an isolated cluster containing a central ion and the ligands was demonstrated.</p> <br/>Acta Physica Sinica. 1965 21(3): 481-495. Published 2005-08-05 ELECTRON-PHONON COUPLING IN THE PROBLEM OF IMPURITY ABSORPTION BAND (Ⅰ) LI YIN-YUAN, CHU KE-HONG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 481-495. article doi:10.7498/aps.21.481 10.7498/aps.21.481 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.481 481-495 //www.getgobooth.com/en/article/doi/10.7498/aps.21.496 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 496-502. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 496-502. Published 2005-08-05 ДИФФУЗИЯ ФОСФОРА В ОКИСНОМ СЛОЕ НА ПОВЕРХНОСТИ КРЕМНИЯ 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 496-502. article doi:10.7498/aps.21.496 10.7498/aps.21.496 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.496 496-502 //www.getgobooth.com/en/article/doi/10.7498/aps.21.503 Author(s): KUO CHANG-LIN <br/><p>An X-ray method has been proposed for identifying the coalescence sequences in silicon carbide crystals containing several polytypes in coalescence. The platelet of single crystal silicon carbide is ground layer by layer by ultrasonic technique, and two Laue patterns are taken before and after every layer was ground off. Thus with the aid of these Laue photographs it would be found possible to determine the sequences as well as the ratios of various coalescent polytypes. The experimental results of one crystal were discussed in view of the mechanism of silicon carbide polytypism suggested by Mitchell.</p> <br/>Acta Physica Sinica. 1965 21(3): 503-507. Published 2005-08-05 Author(s): KUO CHANG-LIN <br/><p>An X-ray method has been proposed for identifying the coalescence sequences in silicon carbide crystals containing several polytypes in coalescence. The platelet of single crystal silicon carbide is ground layer by layer by ultrasonic technique, and two Laue patterns are taken before and after every layer was ground off. Thus with the aid of these Laue photographs it would be found possible to determine the sequences as well as the ratios of various coalescent polytypes. The experimental results of one crystal were discussed in view of the mechanism of silicon carbide polytypism suggested by Mitchell.</p> <br/>Acta Physica Sinica. 1965 21(3): 503-507. Published 2005-08-05 AN X-RAY METHOD FOR IDENTIFYING COALESCENCE SEQUENCE OF SILICON CARBIDE POLYTYPES KUO CHANG-LIN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 503-507. article doi:10.7498/aps.21.503 10.7498/aps.21.503 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.503 503-507 //www.getgobooth.com/en/article/doi/10.7498/aps.21.508 Author(s): WANG ZHU-XI, CHANG LI-YUAN <br/><p>We have investigated the methods of calculating the virial coefficients in the equation of state of gases, and proposed four rules for determining the number of terms in the equation of state. These rules are: (1) Use the variation of ∑v2 (v = (pV)cal - (pV)exp); (2) each succeeding term of the polynomial should be less in numerical value than its preceding term; (3) the last term of the polynomial should be of the same order of magnitude as the experimental error; (4) the residuals v should have nearly equal numbers of positive and negative values.We advise the use of the condition A0+B0+C0+…=1, but not the condition A=RT. We have also investigated whether the expansion is better in increasing powers of pressure or of density, the omission of odd power terms, the number of significant figures in the numerical values of the virial coefficients, and the correction of some experimental data.Based on the above considerations we have recalculated the virial coefficients of hydrogen gas from two different sets of experimental data, with results differing from those of the original authors. The virial coefficients calculated from two different sources agree within twice the standard error, and differ less than those of the original authors.</p> <br/>Acta Physica Sinica. 1965 21(3): 508-518. Published 2005-08-05 Author(s): WANG ZHU-XI, CHANG LI-YUAN <br/><p>We have investigated the methods of calculating the virial coefficients in the equation of state of gases, and proposed four rules for determining the number of terms in the equation of state. These rules are: (1) Use the variation of ∑v2 (v = (pV)cal - (pV)exp); (2) each succeeding term of the polynomial should be less in numerical value than its preceding term; (3) the last term of the polynomial should be of the same order of magnitude as the experimental error; (4) the residuals v should have nearly equal numbers of positive and negative values.We advise the use of the condition A0+B0+C0+…=1, but not the condition A=RT. We have also investigated whether the expansion is better in increasing powers of pressure or of density, the omission of odd power terms, the number of significant figures in the numerical values of the virial coefficients, and the correction of some experimental data.Based on the above considerations we have recalculated the virial coefficients of hydrogen gas from two different sets of experimental data, with results differing from those of the original authors. The virial coefficients calculated from two different sources agree within twice the standard error, and differ less than those of the original authors.</p> <br/>Acta Physica Sinica. 1965 21(3): 508-518. Published 2005-08-05 ON THE CALCULATION OF THE VIRIAL COEFFICIENTS OF HYDROGEN GAS FROM EXPERIMENTAL DATA WANG ZHU-XI, CHANG LI-YUAN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 508-518. article doi:10.7498/aps.21.508 10.7498/aps.21.508 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.508 508-518 //www.getgobooth.com/en/article/doi/10.7498/aps.21.519 Author(s): CHEN HSIAO-SHEN, HSIEH HSI-TEH <br/><p>The method developed by the authors for reducing the direct product of irreducible space group representations has been extended to the reduction of the symmetrized and the antisymmetrized n th power of irreducible space group representations. The reduction coefficients for symmetrized squares of the hexagonal closed-packed and wurtzite space groups are calculated. An application of the results thus obtained in the study of the configuration instabilities is briefly discussed.</p> <br/>Acta Physica Sinica. 1965 21(3): 519-525. Published 2005-08-05 Author(s): CHEN HSIAO-SHEN, HSIEH HSI-TEH <br/><p>The method developed by the authors for reducing the direct product of irreducible space group representations has been extended to the reduction of the symmetrized and the antisymmetrized n th power of irreducible space group representations. The reduction coefficients for symmetrized squares of the hexagonal closed-packed and wurtzite space groups are calculated. An application of the results thus obtained in the study of the configuration instabilities is briefly discussed.</p> <br/>Acta Physica Sinica. 1965 21(3): 519-525. Published 2005-08-05 REDUCTIONS OF THE SYMMETRIZED AND THE ANTISYM-METRIZED POWER OF THE IRREDUCIBLE SPACE GROUP REPRESENTATIONS CHEN HSIAO-SHEN, HSIEH HSI-TEH 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 519-525. article doi:10.7498/aps.21.519 10.7498/aps.21.519 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.519 519-525 //www.getgobooth.com/en/article/doi/10.7498/aps.21.526 Author(s): SU HONG-YUAN, SUN YUNG-CHUN, NEE WEI-LING <br/><p>Thin and uniform sources are always needed in β-spectroscopy. For this purpose, an apparatus of vacuum evaporation was designed, by mean of which sources such as In114,Au198 and Sm153 have been prepared. The souces of In114 were prepared respectively by the methods of drop evaporation and vacuum evaporation, and both were measured with the double focusing β-spectrometer and double lens β-spectrometer. Their internal conversion spectra were compared. The advantage of the method of vacuum evaporation is obvious. In addition, the Au198 K-conversion line of 411.8 KeV γ-ray and Sm153 K, LⅠ,LⅡ, LⅢ convertion lines of 69.67 KeV γ-ray measured with double focusing β-spectro-meter are given.</p> <br/>Acta Physica Sinica. 1965 21(3): 526-530. Published 2005-08-05 Author(s): SU HONG-YUAN, SUN YUNG-CHUN, NEE WEI-LING <br/><p>Thin and uniform sources are always needed in β-spectroscopy. For this purpose, an apparatus of vacuum evaporation was designed, by mean of which sources such as In114,Au198 and Sm153 have been prepared. The souces of In114 were prepared respectively by the methods of drop evaporation and vacuum evaporation, and both were measured with the double focusing β-spectrometer and double lens β-spectrometer. Their internal conversion spectra were compared. The advantage of the method of vacuum evaporation is obvious. In addition, the Au198 K-conversion line of 411.8 KeV γ-ray and Sm153 K, LⅠ,LⅡ, LⅢ convertion lines of 69.67 KeV γ-ray measured with double focusing β-spectro-meter are given.</p> <br/>Acta Physica Sinica. 1965 21(3): 526-530. Published 2005-08-05 THE PREPARATION OF SOURCES BY VACUUM EVAPORATION SU HONG-YUAN, SUN YUNG-CHUN, NEE WEI-LING 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 526-530. article doi:10.7498/aps.21.526 10.7498/aps.21.526 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.526 526-530 //www.getgobooth.com/en/article/doi/10.7498/aps.21.531 Author(s): PAO CHENG-KWANG <br/><p>The coherent effect inherent in particle-particle pair or particle-hole pair which is moving in a rotating weak-deformed nuclear field has been investigated. The low-lying even-parity states 0+, 2+, 4+, of O18 and odd-parity states 0-, 1-, 2-, 3-, of O16 have been calculated accordingly. Comparison with the corresponding wave-functions by the shell model classical calculation shows that there is much similarity between them. Some preliminary conclusions are obtained as follows: The main components in nuclear force are the P2 force plus certain other force with coherent property. The former is equivalent to a rotating deformed field, while the latter is essential in all calculated states except for the 0- state only.</p> <br/>Acta Physica Sinica. 1965 21(3): 531-541. Published 2005-08-05 Author(s): PAO CHENG-KWANG <br/><p>The coherent effect inherent in particle-particle pair or particle-hole pair which is moving in a rotating weak-deformed nuclear field has been investigated. The low-lying even-parity states 0+, 2+, 4+, of O18 and odd-parity states 0-, 1-, 2-, 3-, of O16 have been calculated accordingly. Comparison with the corresponding wave-functions by the shell model classical calculation shows that there is much similarity between them. Some preliminary conclusions are obtained as follows: The main components in nuclear force are the P2 force plus certain other force with coherent property. The former is equivalent to a rotating deformed field, while the latter is essential in all calculated states except for the 0- state only.</p> <br/>Acta Physica Sinica. 1965 21(3): 531-541. Published 2005-08-05 COHERENT EFFECT IN WEAK-DEFORMED NUCLEAR FIELD PAO CHENG-KWANG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 531-541. article doi:10.7498/aps.21.531 10.7498/aps.21.531 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.531 531-541 //www.getgobooth.com/en/article/doi/10.7498/aps.21.542 Author(s): YU YOU-WEN, CHANG TSUNG-HUA, YU MIN <br/><p>In a previous paper we have proposed a spatially symmetrized wave function of the two-particle system. Here we propose further a wave function of a three- and four-particle system with the same symmetrical property. Comparing our wave functions with the shell model wave functions calculated by Flowers and by Redlich, we observe the similarity between them and find that the squares of the overlap integrals of the corresponding wave functions are greater than 80%.</p> <br/>Acta Physica Sinica. 1965 21(3): 542-545. Published 2005-08-05 Author(s): YU YOU-WEN, CHANG TSUNG-HUA, YU MIN <br/><p>In a previous paper we have proposed a spatially symmetrized wave function of the two-particle system. Here we propose further a wave function of a three- and four-particle system with the same symmetrical property. Comparing our wave functions with the shell model wave functions calculated by Flowers and by Redlich, we observe the similarity between them and find that the squares of the overlap integrals of the corresponding wave functions are greater than 80%.</p> <br/>Acta Physica Sinica. 1965 21(3): 542-545. Published 2005-08-05 ON THE STRUCTURE OF THE COHERENT ENERGY STATES IN NUCLEI F&lt;sup&lt;19&lt;/sup&lt; AND Ne&lt;sup&lt;20&lt;/sup&lt; YU YOU-WEN, CHANG TSUNG-HUA, YU MIN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 542-545. article doi:10.7498/aps.21.542 10.7498/aps.21.542 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.542 542-545 //www.getgobooth.com/en/article/doi/10.7498/aps.21.546 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 546-559. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 546-559. Published 2005-08-05 О ДАЛЬНЕЙШЕМ ИССЛЕДОВАНИИ СПЕКТРОВ НЕЙТРОНОВ ДЕЛЕНИЯ 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 546-559. article doi:10.7498/aps.21.546 10.7498/aps.21.546 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.546 546-559 //www.getgobooth.com/en/article/doi/10.7498/aps.21.560 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 560-568. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 560-568. Published 2005-08-05 КРИТИЧЕСКОЕ МАГНИТНОЕ ПОЛЕ СВЕРХПРОВОДНЙКА ВТОРОЙ ГРУППЫ 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 560-568. article doi:10.7498/aps.21.560 10.7498/aps.21.560 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.560 560-568 //www.getgobooth.com/en/article/doi/10.7498/aps.21.569 Author(s): GUAN HONG <br/><p>Using the hypercharge-charge representation, leptonic decays of elementary particles are considered under the symmetry of the group B2. Baryons and mesons are assigned to the 4-dimensional representations of the group B2, then the 10-dimensional regular representation just contains all |△S|≤1 and |△Q|≤l baryonic currents or mesonic currents. Assumming that the weak interaction is mediated by intermediate bosons, and inserting them into the 10-dimensional representation of B2, we have calculated various leptonic decay rates of strange particles which involve both △S = + △Q and △S = - △Q processes. The results here obtained are not in contradiction to present experimental data.</p> <br/>Acta Physica Sinica. 1965 21(3): 569-576. Published 2005-08-05 Author(s): GUAN HONG <br/><p>Using the hypercharge-charge representation, leptonic decays of elementary particles are considered under the symmetry of the group B2. Baryons and mesons are assigned to the 4-dimensional representations of the group B2, then the 10-dimensional regular representation just contains all |△S|≤1 and |△Q|≤l baryonic currents or mesonic currents. Assumming that the weak interaction is mediated by intermediate bosons, and inserting them into the 10-dimensional representation of B2, we have calculated various leptonic decay rates of strange particles which involve both △S = + △Q and △S = - △Q processes. The results here obtained are not in contradiction to present experimental data.</p> <br/>Acta Physica Sinica. 1965 21(3): 569-576. Published 2005-08-05 THE GROUP B&lt;sub&lt;2&lt;/sub&lt; AND LEPTONIC DECAYS OF STRANGE PARTICLES GUAN HONG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 569-576. article doi:10.7498/aps.21.569 10.7498/aps.21.569 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.569 569-576 //www.getgobooth.com/en/article/doi/10.7498/aps.21.577 Author(s): HSU PE-WEI <br/><p>The mass formula which was derived from the theory of unitary symmetrical group seems to be somewhat different with experiments. Now we have discussed this problem from the point of view of field interaction. The results show that the mixing effects of both T = 0 states, one belongs to the one dimensional representation and the other to the eight, give a correction to the mass of each of them, and the contradiction between the theory and experiment may be explained. Finally we have discussed the K-K resonant state.</p> <br/>Acta Physica Sinica. 1965 21(3): 577-582. Published 2005-08-05 Author(s): HSU PE-WEI <br/><p>The mass formula which was derived from the theory of unitary symmetrical group seems to be somewhat different with experiments. Now we have discussed this problem from the point of view of field interaction. The results show that the mixing effects of both T = 0 states, one belongs to the one dimensional representation and the other to the eight, give a correction to the mass of each of them, and the contradiction between the theory and experiment may be explained. Finally we have discussed the K-K resonant state.</p> <br/>Acta Physica Sinica. 1965 21(3): 577-582. Published 2005-08-05 MESON RESONANCE AND THE UNITARY SYMMETRY THEORY HSU PE-WEI 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 577-582. article doi:10.7498/aps.21.577 10.7498/aps.21.577 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.577 577-582 //www.getgobooth.com/en/article/doi/10.7498/aps.21.583 Author(s): YIN PONG-CHENG, CHANG CHUN-TING, ZHAO WAN-YUN <br/><p>In this paper, the analytical properties of the S matrix of nonrelativistic cut-off Coulomb potential in the complex angular momentum and complex energy planes are discussed. The Regge poles of this S matrix for four special cases are given, and the first two Regge trajectories are traced by means of numerical calculations.</p> <br/>Acta Physica Sinica. 1965 21(3): 583-590. Published 2005-08-05 Author(s): YIN PONG-CHENG, CHANG CHUN-TING, ZHAO WAN-YUN <br/><p>In this paper, the analytical properties of the S matrix of nonrelativistic cut-off Coulomb potential in the complex angular momentum and complex energy planes are discussed. The Regge poles of this S matrix for four special cases are given, and the first two Regge trajectories are traced by means of numerical calculations.</p> <br/>Acta Physica Sinica. 1965 21(3): 583-590. Published 2005-08-05 THE REGGE POLES OF CUT-OFF COULOMB POTENTIAL YIN PONG-CHENG, CHANG CHUN-TING, ZHAO WAN-YUN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 583-590. article doi:10.7498/aps.21.583 10.7498/aps.21.583 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.583 583-590 //www.getgobooth.com/en/article/doi/10.7498/aps.21.591 Author(s): HSU DSEN-I, HO YU-PING <br/><p>The influence of Fe2+ on the ferrimagnetic resonance properties of nickel ferrites was discussed. Since the ground state of Fe2+ in spinels is a singlet, the crystal field only slightly affects the motion of the spin magnetic moment of Fe2+. It was pointed out that due to the anisotropy of the exchange interaction between Fe2+ and Fe3+ or Ni2+ situated at the octahedral position, the longitudinal branch might play the major role in the relaxation process of nickel ferrites.The method used in Ref. [1] was extended to treat the strong exchange coupled system. It was confirmed that usually the expression for the line width coincides with that of the case of a weakly coupled system.Under the light of a reasonable model of anisotropic exchange interaction the experimental fact that the line width goes through a maximum at a definite temperature along all crystal directions except [001], was satisfactorily explained. The theoretical expression obtained for the anisotropy of the line width agrees with the experimental results.</p> <br/>Acta Physica Sinica. 1965 21(3): 591-607. Published 2005-08-05 Author(s): HSU DSEN-I, HO YU-PING <br/><p>The influence of Fe2+ on the ferrimagnetic resonance properties of nickel ferrites was discussed. Since the ground state of Fe2+ in spinels is a singlet, the crystal field only slightly affects the motion of the spin magnetic moment of Fe2+. It was pointed out that due to the anisotropy of the exchange interaction between Fe2+ and Fe3+ or Ni2+ situated at the octahedral position, the longitudinal branch might play the major role in the relaxation process of nickel ferrites.The method used in Ref. [1] was extended to treat the strong exchange coupled system. It was confirmed that usually the expression for the line width coincides with that of the case of a weakly coupled system.Under the light of a reasonable model of anisotropic exchange interaction the experimental fact that the line width goes through a maximum at a definite temperature along all crystal directions except [001], was satisfactorily explained. The theoretical expression obtained for the anisotropy of the line width agrees with the experimental results.</p> <br/>Acta Physica Sinica. 1965 21(3): 591-607. Published 2005-08-05 EFFECT OF Fe&lt;sup&lt;2+&lt;/sup&lt; ON THE LINE WIDTH OF FERRIMAGNETIC RESONANCE HSU DSEN-I, HO YU-PING 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 591-607. article doi:10.7498/aps.21.591 10.7498/aps.21.591 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.591 591-607 //www.getgobooth.com/en/article/doi/10.7498/aps.21.608 Author(s): LIN FU-CHENG, WU CUN-KAI, KUO JIN-FANG, YU YAO-JIN, HUANG WU-HAN <br/><p>The positions of the absorption lines in ruby are calculated with the general electrostatic interaction parameters in the ligand-field theory. Consistence of the theory with experiment is slightly better than those obtained previously. The effects of molecular orbi-tals on these parameters are discussed. Similar results are obtained by a calculation using two covalence parameters and other known free-ion parameters. In this method, the calculated values of Nπ≌0.92 and Nσ≌0.89 are obtained. The parameters in the generalized effective Spin-Hamiltonian are calculated. It is found that the g-factor in the modified term results from the contribution of the fourth order perturbation, and its order of magnitude is about 10-5. The effective Hamiltonian which is used to describe the R line of ruby was obtained.</p> <br/>Acta Physica Sinica. 1965 21(3): 608-617. Published 2005-08-05 Author(s): LIN FU-CHENG, WU CUN-KAI, KUO JIN-FANG, YU YAO-JIN, HUANG WU-HAN <br/><p>The positions of the absorption lines in ruby are calculated with the general electrostatic interaction parameters in the ligand-field theory. Consistence of the theory with experiment is slightly better than those obtained previously. The effects of molecular orbi-tals on these parameters are discussed. Similar results are obtained by a calculation using two covalence parameters and other known free-ion parameters. In this method, the calculated values of Nπ≌0.92 and Nσ≌0.89 are obtained. The parameters in the generalized effective Spin-Hamiltonian are calculated. It is found that the g-factor in the modified term results from the contribution of the fourth order perturbation, and its order of magnitude is about 10-5. The effective Hamiltonian which is used to describe the R line of ruby was obtained.</p> <br/>Acta Physica Sinica. 1965 21(3): 608-617. Published 2005-08-05 EFFECTS OF MOLECULAR ORBITALS AND CALCULATION OF THE ZEEMAN PARAMETERS IN RUBY LIN FU-CHENG, WU CUN-KAI, KUO JIN-FANG, YU YAO-JIN, HUANG WU-HAN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 608-617. article doi:10.7498/aps.21.608 10.7498/aps.21.608 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.608 608-617 //www.getgobooth.com/en/article/doi/10.7498/aps.21.618 Author(s): CHUNG CHUAN-DE, YU SHU-FANG, CHIANG CHANG-SHAN <br/><p>The paramagnetic resonance of the Fe3+ ions in sodium borate glasses has been studied. There is a sharp and approximately symmetric resonance line at g (apparent) = 4.27. The experimental results show that the Fe3+ ion has replaced the boron ion in the tetrahedron [BO4] contacting with two sodium ions.</p> <br/>Acta Physica Sinica. 1965 21(3): 618-621. Published 2005-08-05 Author(s): CHUNG CHUAN-DE, YU SHU-FANG, CHIANG CHANG-SHAN <br/><p>The paramagnetic resonance of the Fe3+ ions in sodium borate glasses has been studied. There is a sharp and approximately symmetric resonance line at g (apparent) = 4.27. The experimental results show that the Fe3+ ion has replaced the boron ion in the tetrahedron [BO4] contacting with two sodium ions.</p> <br/>Acta Physica Sinica. 1965 21(3): 618-621. Published 2005-08-05 THE PARAMAGNETIC RESONANCE OF Fe&lt;sup&lt;3+&lt;/sup&lt; IONS IN SODIUM BORATE GLASSES CHUNG CHUAN-DE, YU SHU-FANG, CHIANG CHANG-SHAN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 618-621. article doi:10.7498/aps.21.618 10.7498/aps.21.618 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.618 618-621 //www.getgobooth.com/en/article/doi/10.7498/aps.21.622 Author(s): KAO SHU-JUN, TSIEN CHIH-TSIANG <br/><p>Relationships between the activation energies (QA and QB) of self-diffusion of each component and the concentration CB of a completely disordered binary solid solution are derived on the basis of a quasi-chemical model. These theoretical results are compared with experimental data.When the atomic size of the two components is approximately the same, a linear relationship is obtained between(QB - QA) and CB for both f.c.c. and b.c.c. structure. This is in good agreement with the experimental results of Ag-Au system.In the low concentration range, the relationship between the activation energy QA of self-diffusion of the solvent and the concentration CB is also a straight line. The sign of the slope can be predicted from the relative magnitude of activation energy of self-diffusion of the solvent and that of impurity diffusion in the same solvent. This prediction is in good agreement with the known experimental data of self-diffusion of silver in nine different silver alloys of low alloy concentration.</p> <br/>Acta Physica Sinica. 1965 21(3): 622-629. Published 2005-08-05 Author(s): KAO SHU-JUN, TSIEN CHIH-TSIANG <br/><p>Relationships between the activation energies (QA and QB) of self-diffusion of each component and the concentration CB of a completely disordered binary solid solution are derived on the basis of a quasi-chemical model. These theoretical results are compared with experimental data.When the atomic size of the two components is approximately the same, a linear relationship is obtained between(QB - QA) and CB for both f.c.c. and b.c.c. structure. This is in good agreement with the experimental results of Ag-Au system.In the low concentration range, the relationship between the activation energy QA of self-diffusion of the solvent and the concentration CB is also a straight line. The sign of the slope can be predicted from the relative magnitude of activation energy of self-diffusion of the solvent and that of impurity diffusion in the same solvent. This prediction is in good agreement with the known experimental data of self-diffusion of silver in nine different silver alloys of low alloy concentration.</p> <br/>Acta Physica Sinica. 1965 21(3): 622-629. Published 2005-08-05 THE QUASI-CHEMICAL MODEL OF SELF-DIFFUSION IN HOMOGENEOUS ALLOYS KAO SHU-JUN, TSIEN CHIH-TSIANG 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 622-629. article doi:10.7498/aps.21.622 10.7498/aps.21.622 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.622 622-629 //www.getgobooth.com/en/article/doi/10.7498/aps.21.630 Author(s): YAN ZI-JUN <br/><p>In this paper, it is shown that for negative absolute temperatures the form of the Le Chatelier's principle may not be changed, but the content of the second "force" action is opposite to that for positive absolute temperatures. Secondly, it is shown what condition is required for Maxwell's relations to fulfil the deduction of the Le Chatelier's principle.</p> <br/>Acta Physica Sinica. 1965 21(3): 630-635. Published 2005-08-05 Author(s): YAN ZI-JUN <br/><p>In this paper, it is shown that for negative absolute temperatures the form of the Le Chatelier's principle may not be changed, but the content of the second "force" action is opposite to that for positive absolute temperatures. Secondly, it is shown what condition is required for Maxwell's relations to fulfil the deduction of the Le Chatelier's principle.</p> <br/>Acta Physica Sinica. 1965 21(3): 630-635. Published 2005-08-05 LE CHATELIER'S PRINCIPLE AT NEGATIVE ABSOLUTE TEMPERATURES YAN ZI-JUN 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 630-635. article doi:10.7498/aps.21.630 10.7498/aps.21.630 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.630 630-635 //www.getgobooth.com/en/article/doi/10.7498/aps.21.636 Author(s): SHEN GUANG-MING <br/><p>The design feature of a direct-reading spectro-analyser with emphasis on the electronic circuit design is presented in this paper. This instrument is stable, speedy, and accurate. The first and second order spectral ranges are respectively 2000-6000 and 2000-3000?. The mechanical construction of the optical system is so characterized that two (for first order) or four (for second order) pickups can be set exactly on the same spectral line. A line-frequency, high-voltage and high-energy spark source system is employed with adequate sensitivity. The measuring system consists of a pulse amplifier, a rectifier, an integrator, and a pulse counter. The operation of this instrument is completely automatic after the mounting of the sample. Finally, typical operational data are illustrated.</p> <br/>Acta Physica Sinica. 1965 21(3): 636-645. Published 2005-08-05 Author(s): SHEN GUANG-MING <br/><p>The design feature of a direct-reading spectro-analyser with emphasis on the electronic circuit design is presented in this paper. This instrument is stable, speedy, and accurate. The first and second order spectral ranges are respectively 2000-6000 and 2000-3000?. The mechanical construction of the optical system is so characterized that two (for first order) or four (for second order) pickups can be set exactly on the same spectral line. A line-frequency, high-voltage and high-energy spark source system is employed with adequate sensitivity. The measuring system consists of a pulse amplifier, a rectifier, an integrator, and a pulse counter. The operation of this instrument is completely automatic after the mounting of the sample. Finally, typical operational data are illustrated.</p> <br/>Acta Physica Sinica. 1965 21(3): 636-645. Published 2005-08-05 THE CIRCUIT DESIGN OF A DIRECT-READING SPECTRO-ANALYSER SHEN GUANG-MING 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 636-645. article doi:10.7498/aps.21.636 10.7498/aps.21.636 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.636 636-645 //www.getgobooth.com/en/article/doi/10.7498/aps.21.646 Author(s): CHENG CHUNG-CHIH, HO SHIH-ZHE <br/><p>One of the most fundamental quantities in the study of various parametric applications of the varactors is its nonlinear characteristics. The required pumping power can be greatly reduced if a varactor having much higher nonlinearity is employed. For the purpose of studying either lower pumping applications or non-sinusoidal pumping applications of the varactor, a knowledge of both the fundamental and the harmonics of the pumped time-varying parameters of the varactors is highly desirable. An analysis on the proper selection and normalization of the non-linear characteristics of the varactor is offered. A graphical method to analyze the fundamental and the harmonics of the pumped time-varying parameters was employed, and curves relating these components to the nonlinearity of the varactor γ, and the pumping voltage ratio m1 were obtained. These curves serve as one of the fundamental references in various varactor parametric applications. Sample applications are also included as illustrations.</p> <br/>Acta Physica Sinica. 1965 21(3): 646-664. Published 2005-08-05 Author(s): CHENG CHUNG-CHIH, HO SHIH-ZHE <br/><p>One of the most fundamental quantities in the study of various parametric applications of the varactors is its nonlinear characteristics. The required pumping power can be greatly reduced if a varactor having much higher nonlinearity is employed. For the purpose of studying either lower pumping applications or non-sinusoidal pumping applications of the varactor, a knowledge of both the fundamental and the harmonics of the pumped time-varying parameters of the varactors is highly desirable. An analysis on the proper selection and normalization of the non-linear characteristics of the varactor is offered. A graphical method to analyze the fundamental and the harmonics of the pumped time-varying parameters was employed, and curves relating these components to the nonlinearity of the varactor γ, and the pumping voltage ratio m1 were obtained. These curves serve as one of the fundamental references in various varactor parametric applications. Sample applications are also included as illustrations.</p> <br/>Acta Physica Sinica. 1965 21(3): 646-664. Published 2005-08-05 ANALYSIS OF THE NONLINEAR CHARACTERISTICS AND THE PUMPED TIME-VARYING PARAMETERS OF THE VARACTORS CHENG CHUNG-CHIH, HO SHIH-ZHE 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 646-664. article doi:10.7498/aps.21.646 10.7498/aps.21.646 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.646 646-664 //www.getgobooth.com/en/article/doi/10.7498/aps.21.665 Author(s): CHEN CHI <br/><p>Account is taken of the change in the state of polarization of multiply diffracted X-rays in mosaic crystals, and a more rigorous treatment of secondary extinction is given. Separate expressions for the transmitted, and multiply diffracted power are obtained, which enable the effective absorption coefficient to be calculated.</p> <br/>Acta Physica Sinica. 1965 21(3): 665-673. Published 2005-08-05 Author(s): CHEN CHI <br/><p>Account is taken of the change in the state of polarization of multiply diffracted X-rays in mosaic crystals, and a more rigorous treatment of secondary extinction is given. Separate expressions for the transmitted, and multiply diffracted power are obtained, which enable the effective absorption coefficient to be calculated.</p> <br/>Acta Physica Sinica. 1965 21(3): 665-673. Published 2005-08-05 ON THE SECONDARY EXTINCTION OF X-RAYS CHEN CHI 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 665-673. article doi:10.7498/aps.21.665 10.7498/aps.21.665 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.665 665-673 //www.getgobooth.com/en/article/doi/10.7498/aps.21.674 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 674-676. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 674-676. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 674-676. article doi:10.7498/aps.21.674 10.7498/aps.21.674 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.674 674-676 //www.getgobooth.com/en/article/doi/10.7498/aps.21.677 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 677-682. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 677-682. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 677-682. article doi:10.7498/aps.21.677 10.7498/aps.21.677 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.677 677-682 //www.getgobooth.com/en/article/doi/10.7498/aps.21.683 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 683-685. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 683-685. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 683-685. article doi:10.7498/aps.21.683 10.7498/aps.21.683 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.683 683-685 //www.getgobooth.com/en/article/doi/10.7498/aps.21.686 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 686-688. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 686-688. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 686-688. article doi:10.7498/aps.21.686 10.7498/aps.21.686 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.686 686-688 //www.getgobooth.com/en/article/doi/10.7498/aps.21.689 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 689-690. Published 2005-08-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1965 21(3): 689-690. Published 2005-08-05 2005-08-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1965 21(3): 689-690. article doi:10.7498/aps.21.689 10.7498/aps.21.689 Acta Physica Sinica 21 3 2005-08-05 //www.getgobooth.com/en/article/doi/10.7498/aps.21.689 689-690

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