//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.26.285 Author(s): LAI WU-YAN, WANG DING-SHENG, PU FU-CHO <br/><p>Taking both dipole and exchange interaction into aceount we have deduced the secular equation for the dipole-exchange spin waves in an axially magnetized cylin-drical ferromagnet. Numerical results of frequency spectra are also given. When the wave vector of the spin wave is small, dipole energy is the most important term and our results coincide with that of magnetostatic modes. When the wave vector becomes large, exchange energy plays a greatrole, and our results approach those of the theory of macroscopic exchange waves.</p> <br/>Acta Physica Sinica. 1977 26(4): 285-292. Published 1977-02-05 Author(s): LAI WU-YAN, WANG DING-SHENG, PU FU-CHO <br/><p>Taking both dipole and exchange interaction into aceount we have deduced the secular equation for the dipole-exchange spin waves in an axially magnetized cylin-drical ferromagnet. Numerical results of frequency spectra are also given. When the wave vector of the spin wave is small, dipole energy is the most important term and our results coincide with that of magnetostatic modes. When the wave vector becomes large, exchange energy plays a greatrole, and our results approach those of the theory of macroscopic exchange waves.</p> <br/>Acta Physica Sinica. 1977 26(4): 285-292. Published 1977-02-05 DIPOLE-EXCHANGE SPIN WAVES IN A CYLINDRICAL FERROMAGNET LAI WU-YAN, WANG DING-SHENG, PU FU-CHO 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 285-292. article doi:10.7498/aps.26.285 10.7498/aps.26.285 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.285 285-292 //www.getgobooth.com/en/article/doi/10.7498/aps.26.293 Author(s): GU BEN-YUAN, MAO ZHEN-DAO, CHENG XI-MIN, XIE AN-YUN <br/><p>The abnormal phenomena in the transmitted light passing through α-LiIO3 single crystals under the application of a DC field parallel to the c-axis have been further investigated by means of the direct projection method, the optical Fourier transfor-mation method and the Schlieren method. The change in the spacial frequency spectrum of a z-cut crystal plate with the increase of the applied field intensity was examined. It was observed that the diffraction efficiency of the transmitted light shows a linear dependence on the applied voltage, but is independent of the polariza-tion of the incident light. It was also found that the light polarization is not changed by the action of the DC field and the effect of absorption is negligible. The relaxa-tion process of the change in diffraction efficiency with time was recorded quantita-tively. A tentative explanation of these phenomena has been given.</p> <br/>Acta Physica Sinica. 1977 26(4): 293-300. Published 1977-02-05 Author(s): GU BEN-YUAN, MAO ZHEN-DAO, CHENG XI-MIN, XIE AN-YUN <br/><p>The abnormal phenomena in the transmitted light passing through α-LiIO3 single crystals under the application of a DC field parallel to the c-axis have been further investigated by means of the direct projection method, the optical Fourier transfor-mation method and the Schlieren method. The change in the spacial frequency spectrum of a z-cut crystal plate with the increase of the applied field intensity was examined. It was observed that the diffraction efficiency of the transmitted light shows a linear dependence on the applied voltage, but is independent of the polariza-tion of the incident light. It was also found that the light polarization is not changed by the action of the DC field and the effect of absorption is negligible. The relaxa-tion process of the change in diffraction efficiency with time was recorded quantita-tively. A tentative explanation of these phenomena has been given.</p> <br/>Acta Physica Sinica. 1977 26(4): 293-300. Published 1977-02-05 FURTHER INVESTIGATIONS ON THE ABNORMAL PHENOMENA OBSERVED IN THE LIGHT TRANSMITTED BY α-LiIO&lt;sub&lt;3&lt;/sub&lt; SINGLE CRYSTALS UNDER THE ACTION OF AN ELECTROSTATIC FIELD GU BEN-YUAN, MAO ZHEN-DAO, CHENG XI-MIN, XIE AN-YUN 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 293-300. article doi:10.7498/aps.26.293 10.7498/aps.26.293 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.293 293-300 //www.getgobooth.com/en/article/doi/10.7498/aps.26.301 Author(s): FAN LIANG-ZAO, XING WEI-FU, JIN RUO-BING <br/><p>The measuring time permitted for a pressure bar transducer is usually limited by the length of the pressure bar itself. To overcome this, we have studied the dyna-mic transmitting behavior of the pressure bar. Our results show that to obtain the correct pressure profile, one must reduce both the radial vibration in the neigh-borhod of the top end of the pressure bar, and the interference of reflected waves from the lower end with the incident wave. This paper presents a design for a pres-sure bar based on the principle of wave velocity dispersion, by which the perfor-mance of the transducer is greatly improved. The chief merit of the present design is that the permitted measuring time is no Longer limited by the length of the pres-sure bar.</p> <br/>Acta Physica Sinica. 1977 26(4): 301-306. Published 1977-02-05 Author(s): FAN LIANG-ZAO, XING WEI-FU, JIN RUO-BING <br/><p>The measuring time permitted for a pressure bar transducer is usually limited by the length of the pressure bar itself. To overcome this, we have studied the dyna-mic transmitting behavior of the pressure bar. Our results show that to obtain the correct pressure profile, one must reduce both the radial vibration in the neigh-borhod of the top end of the pressure bar, and the interference of reflected waves from the lower end with the incident wave. This paper presents a design for a pres-sure bar based on the principle of wave velocity dispersion, by which the perfor-mance of the transducer is greatly improved. The chief merit of the present design is that the permitted measuring time is no Longer limited by the length of the pres-sure bar.</p> <br/>Acta Physica Sinica. 1977 26(4): 301-306. Published 1977-02-05 THE DYNAMIC TRANSMITTING PROPERTIES OF A PIEZO-ELECTRIC PRESSURE BAR TRANSDUCER FAN LIANG-ZAO, XING WEI-FU, JIN RUO-BING 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 301-306. article doi:10.7498/aps.26.301 10.7498/aps.26.301 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.301 301-306 //www.getgobooth.com/en/article/doi/10.7498/aps.26.307 Author(s): CHEN JIN-QUAN, WANG FAN, GAO MEI-JUAN <br/><p>This paper advocates a new approach to the theory of finite group representa-tions by applying exclusively the method of commuting operators in quantum me-chanics. The basic problems of group representation theory such as the labeling of irreducible representations, the finding of characters, irreducible bases and matrix ele-ments and the CG coefficients et al are all simplified to the solving of the eigenfunc-tions of a certain complete set of commuting operators. This method has the advan-tage of being concise in theory and easily manageable in practice.</p> <br/>Acta Physica Sinica. 1977 26(4): 307-316. Published 1977-02-05 Author(s): CHEN JIN-QUAN, WANG FAN, GAO MEI-JUAN <br/><p>This paper advocates a new approach to the theory of finite group representa-tions by applying exclusively the method of commuting operators in quantum me-chanics. The basic problems of group representation theory such as the labeling of irreducible representations, the finding of characters, irreducible bases and matrix ele-ments and the CG coefficients et al are all simplified to the solving of the eigenfunc-tions of a certain complete set of commuting operators. This method has the advan-tage of being concise in theory and easily manageable in practice.</p> <br/>Acta Physica Sinica. 1977 26(4): 307-316. Published 1977-02-05 PHYSICAL METHODS OF GROUP REPRESENTATION THEORY (Ⅰ)——A NEW APPROACH TO THE THEORY OF FINITE GROUP REPRESENTATIONS CHEN JIN-QUAN, WANG FAN, GAO MEI-JUAN 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 307-316. article doi:10.7498/aps.26.307 10.7498/aps.26.307 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.307 307-316 //www.getgobooth.com/en/article/doi/10.7498/aps.26.317 Author(s): HOU BO-YU <br/><p>This paper studies explicitly the Abelian spontaneously broken gauge model for scalar and gauge bosons by using perturbation expansions . It is discovered that in various renormalizable gauges (R gauge) the gauge dependent part contributed by unphysical components of inner lines in the sum of all Feynman diagrams of the same order coexists only with the outer mass shell components of outer lines. On the mass shell only the contribution by physical components is left, just as in the unitary gauge (U gauge). Thus, the identitical nature of the R gauge and U gauge on the mass shell has been shown explicitly, hence may be seen the unitarity of the R gauge. It is also shown why residue divergences appear in the U gauge, and why these residue divergences will necessarily cancal each other out, thus revealing the crypto-renormali-zability of the U gauge.</p> <br/>Acta Physica Sinica. 1977 26(4): 317-332. Published 1977-02-05 Author(s): HOU BO-YU <br/><p>This paper studies explicitly the Abelian spontaneously broken gauge model for scalar and gauge bosons by using perturbation expansions . It is discovered that in various renormalizable gauges (R gauge) the gauge dependent part contributed by unphysical components of inner lines in the sum of all Feynman diagrams of the same order coexists only with the outer mass shell components of outer lines. On the mass shell only the contribution by physical components is left, just as in the unitary gauge (U gauge). Thus, the identitical nature of the R gauge and U gauge on the mass shell has been shown explicitly, hence may be seen the unitarity of the R gauge. It is also shown why residue divergences appear in the U gauge, and why these residue divergences will necessarily cancal each other out, thus revealing the crypto-renormali-zability of the U gauge.</p> <br/>Acta Physica Sinica. 1977 26(4): 317-332. Published 1977-02-05 GAUGE INDEPENDENCE, UNITARITY AND RENORMALI-ZABILITY OF A SPONTANEOUSLY BROKEN MODEL IN THE PERTURBATION THEORY HOU BO-YU 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 317-332. article doi:10.7498/aps.26.317 10.7498/aps.26.317 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.317 317-332 //www.getgobooth.com/en/article/doi/10.7498/aps.26.333 Author(s): SHI BING <br/><p>This paper extends the Goldfarb-Buttle method which is used to treat the single particle transfer reactions induced by heavy ions to multi-particle transfer reactions. The 12C(7Li, t)16O and 20Ne(d, 6Li)16O reactions are calculated by using the coherent wave function for 16O, with due consideration to certain recoil effects. The results are compared with those obtained by experiment.</p> <br/>Acta Physica Sinica. 1977 26(4): 333-340. Published 1977-02-05 Author(s): SHI BING <br/><p>This paper extends the Goldfarb-Buttle method which is used to treat the single particle transfer reactions induced by heavy ions to multi-particle transfer reactions. The 12C(7Li, t)16O and 20Ne(d, 6Li)16O reactions are calculated by using the coherent wave function for 16O, with due consideration to certain recoil effects. The results are compared with those obtained by experiment.</p> <br/>Acta Physica Sinica. 1977 26(4): 333-340. Published 1977-02-05 &lt;sup&lt;12&lt;/sup&lt;C(&lt;sup&lt;7&lt;/sup&lt;Li. t) &lt;sup&lt;16&lt;/sup&lt;O AND &lt;sup&lt;20&lt;/sup&lt;Ne (d.&lt;sup&lt;6&lt;/sup&lt;Li) &lt;sup&lt;16&lt;/sup&lt;O REACTIONS SHI BING 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 333-340. article doi:10.7498/aps.26.333 10.7498/aps.26.333 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.333 333-340 //www.getgobooth.com/en/article/doi/10.7498/aps.26.341 Author(s): ANTENNA GROUP <br/><p>On the basis of physical considerations and computational experience, it is poin-ted out that the initial value problem of the Maxwell equations as a set of first order hyperbolic differential equations could become an effective numerical method for the solution of antenna radiation fields. An alternating direction implicit difference scheme is proposed in combination with extrapolated treatment of the conditions on the outer boundary. To demonstrate the potentialities of the proposed method, nu-merical results for a cylindrical antenna are discussed.</p> <br/>Acta Physica Sinica. 1977 26(4): 341-352. Published 1977-02-05 Author(s): ANTENNA GROUP <br/><p>On the basis of physical considerations and computational experience, it is poin-ted out that the initial value problem of the Maxwell equations as a set of first order hyperbolic differential equations could become an effective numerical method for the solution of antenna radiation fields. An alternating direction implicit difference scheme is proposed in combination with extrapolated treatment of the conditions on the outer boundary. To demonstrate the potentialities of the proposed method, nu-merical results for a cylindrical antenna are discussed.</p> <br/>Acta Physica Sinica. 1977 26(4): 341-352. Published 1977-02-05 SOLUTION TO ANTENNA RADIATION FIELD AS AN INITIAL VALUE PROBLEM ANTENNA GROUP 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 341-352. article doi:10.7498/aps.26.341 10.7498/aps.26.341 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.341 341-352 //www.getgobooth.com/en/article/doi/10.7498/aps.26.353 Author(s): WU HANG-SHENG, JI GUANG-DA, LIU FU-SUI <br/><p>In this paper, we proposed an improved theory for the microwave-induced step phenomenon. With this theory, we studied in detail the effect of an magnetic field and microwave power on the height of the microwave-induced step. Theoretical pre-dictions and the existed experimental facts are consistent.</p> <br/>Acta Physica Sinica. 1977 26(4): 353-362. Published 1977-02-05 Author(s): WU HANG-SHENG, JI GUANG-DA, LIU FU-SUI <br/><p>In this paper, we proposed an improved theory for the microwave-induced step phenomenon. With this theory, we studied in detail the effect of an magnetic field and microwave power on the height of the microwave-induced step. Theoretical pre-dictions and the existed experimental facts are consistent.</p> <br/>Acta Physica Sinica. 1977 26(4): 353-362. Published 1977-02-05 EFFECT OF A MAGNETIC FIELD ON THE HEIGHT OF THE MICROWAVE-INDUCED STEP WU HANG-SHENG, JI GUANG-DA, LIU FU-SUI 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 353-362. article doi:10.7498/aps.26.353 10.7498/aps.26.353 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.353 353-362 //www.getgobooth.com/en/article/doi/10.7498/aps.26.363 Author(s): LIU SHI-CHAO, WANG LI-JUN, CHENG XIANG-RONG, SUN GUO-XIAN, LI JIA-LIN, HU XIN-DE, SHEN ZHU-TONG <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 363-366. Published 1977-02-05 Author(s): LIU SHI-CHAO, WANG LI-JUN, CHENG XIANG-RONG, SUN GUO-XIAN, LI JIA-LIN, HU XIN-DE, SHEN ZHU-TONG <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 363-366. Published 1977-02-05 SINTERING DIAMOND PARTICLES UNDER QUASI-HYDROSTATIC HIGH PRESSURE LIU SHI-CHAO, WANG LI-JUN, CHENG XIANG-RONG, SUN GUO-XIAN, LI JIA-LIN, HU XIN-DE, SHEN ZHU-TONG 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 363-366. article doi:10.7498/aps.26.363 10.7498/aps.26.363 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.363 363-366 //www.getgobooth.com/en/article/doi/10.7498/aps.26.367 Author(s): YU HONG, LI BING-AN <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 367-372. Published 1977-02-05 Author(s): YU HONG, LI BING-AN <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 367-372. Published 1977-02-05 HADRONIC PRODUCTION OF J/ψ PARTICLES YU HONG, LI BING-AN 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 367-372. article doi:10.7498/aps.26.367 10.7498/aps.26.367 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.367 367-372 //www.getgobooth.com/en/article/doi/10.7498/aps.26.373 Author(s): FLAW DETECTION GROUP <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 373-376. Published 1977-02-05 Author(s): FLAW DETECTION GROUP <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 373-376. Published 1977-02-05 ON ELECTROMAGNETIC ULTRASONIC FLAW DETECTION FLAW DETECTION GROUP 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 373-376. article doi:10.7498/aps.26.373 10.7498/aps.26.373 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.373 373-376 //www.getgobooth.com/en/article/doi/10.7498/aps.26.377 Author(s): WANG ZHAO-JUN, HE JING-TANG, ZHANG YING-PING, ZHENG ZHI-PENG, TANG XIAO-WEI <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 377-380. Published 1977-02-05 Author(s): WANG ZHAO-JUN, HE JING-TANG, ZHANG YING-PING, ZHENG ZHI-PENG, TANG XIAO-WEI <br/><p></p> <br/>Acta Physica Sinica. 1977 26(4): 377-380. Published 1977-02-05 THICKNESS GAUGE FOR THE MEASUREMENT OF THIN FOILS WANG ZHAO-JUN, HE JING-TANG, ZHANG YING-PING, ZHENG ZHI-PENG, TANG XIAO-WEI 1977-02-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1977 26(4): 377-380. article doi:10.7498/aps.26.377 10.7498/aps.26.377 Acta Physica Sinica 26 4 1977-02-05 //www.getgobooth.com/en/article/doi/10.7498/aps.26.377 377-380

map