//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.25.373 Author(s): MAGNETIC CRYSTAL GROUP <br/><p>Single crystals of the ferrimagnetie garnet Bi3-2xCa2xFe5-x-yInyVxO12 are grown by the flux method, with x = 1.35 ±0.02, y = 0-0.388. Single crystals having a dimension greater then 10mm and few inclusions can be obtained for all materials with different. In content by the technology described in this paper. The Curie temperature of all these materials is 10-30℃ higher then that of Ga-YIG with the same magnetization. The magnetic anisotropie constant drops rapidly with increase in number of the nonmagnetic indium ions. The anisotropie field falls slightly at first and then increases gradually with decrease from 530 to 200 Gauss of the saturation magnetization. The ferromagnetic resonance linewidth for the X band region increases with decreasing magnetization. It seems that there exists a relaxation mechanism which is connected with the dipole-n'arrowed model. The linewidth is about 1 to 4 Oe for the materials with the above magnetization. The best materials obtained possess an anisotropie field of 16 Oe and a linewidth of 0.7 Oe. The above results show that these materials can be employed in low frequency microwave devices.</p> <br/>Acta Physica Sinica. 1976 25(5): 373-382. Published 2005-08-03 Author(s): MAGNETIC CRYSTAL GROUP <br/><p>Single crystals of the ferrimagnetie garnet Bi3-2xCa2xFe5-x-yInyVxO12 are grown by the flux method, with x = 1.35 ±0.02, y = 0-0.388. Single crystals having a dimension greater then 10mm and few inclusions can be obtained for all materials with different. In content by the technology described in this paper. The Curie temperature of all these materials is 10-30℃ higher then that of Ga-YIG with the same magnetization. The magnetic anisotropie constant drops rapidly with increase in number of the nonmagnetic indium ions. The anisotropie field falls slightly at first and then increases gradually with decrease from 530 to 200 Gauss of the saturation magnetization. The ferromagnetic resonance linewidth for the X band region increases with decreasing magnetization. It seems that there exists a relaxation mechanism which is connected with the dipole-n'arrowed model. The linewidth is about 1 to 4 Oe for the materials with the above magnetization. The best materials obtained possess an anisotropie field of 16 Oe and a linewidth of 0.7 Oe. The above results show that these materials can be employed in low frequency microwave devices.</p> <br/>Acta Physica Sinica. 1976 25(5): 373-382. Published 2005-08-03 THE GROWTH AND MAGNETIC PROPERTIES OF SINGLE CRYSTAL In-SUBSTITUTED BiCaVFe-FERRIMAGNETIC GARNET MAGNETIC CRYSTAL GROUP 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 373-382. article doi:10.7498/aps.25.373 10.7498/aps.25.373 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.373 373-382 //www.getgobooth.com/en/article/doi/10.7498/aps.25.383 Author(s): XIE XI <br/><p>A short-cut method for the solution of the betatron oscillation in particle accelerators is developed to obtain its smooth term and quick oscillation term in whatever order of accuracy desired. An example is worked out in detail to show the practical application of the theory. Finally the mathematical foundation of this method is proved.</p> <br/>Acta Physica Sinica. 1976 25(5): 383-398. Published 2005-08-03 Author(s): XIE XI <br/><p>A short-cut method for the solution of the betatron oscillation in particle accelerators is developed to obtain its smooth term and quick oscillation term in whatever order of accuracy desired. An example is worked out in detail to show the practical application of the theory. Finally the mathematical foundation of this method is proved.</p> <br/>Acta Physica Sinica. 1976 25(5): 383-398. Published 2005-08-03 A SHORT-CUT METHOD FOR THE SOLUTION OF THE BETATRON OSCILLATION IN PARTICLE ACCELERATORS XIE XI 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 383-398. article doi:10.7498/aps.25.383 10.7498/aps.25.383 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.383 383-398 //www.getgobooth.com/en/article/doi/10.7498/aps.25.399 Author(s): HUO YU-PING <br/><p>The local stability of the Tokamak is discussed and a general approximate criteria β c obtained, where η is the longitudinal magneticwell. Furthermore, the influence of multipole' fields on the longitudinal magnetic well and the magnetic shear is discuss. It is observed that small triangular and octopole field components may considerably stabilize a Tokamak of elliptical cross-section.</p> <br/>Acta Physica Sinica. 1976 25(5): 399-408. Published 2005-08-03 Author(s): HUO YU-PING <br/><p>The local stability of the Tokamak is discussed and a general approximate criteria β c obtained, where η is the longitudinal magneticwell. Furthermore, the influence of multipole' fields on the longitudinal magnetic well and the magnetic shear is discuss. It is observed that small triangular and octopole field components may considerably stabilize a Tokamak of elliptical cross-section.</p> <br/>Acta Physica Sinica. 1976 25(5): 399-408. Published 2005-08-03 THE LOCAL STABILITY CRITERIA OF THE TOKAMAK AND THE EFFECT OF THE MULTIPOLE FIELD HUO YU-PING 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 399-408. article doi:10.7498/aps.25.399 10.7498/aps.25.399 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.399 399-408 //www.getgobooth.com/en/article/doi/10.7498/aps.25.409 Author(s): HE ZUO-XIU, HUANG TAO <br/><p>This article calculates the radiative decay process π+→e++ v + r of the π+ meson, by employing the field-current identity of the axial vector current which may be deduced from field algebra theory or the quantum theory of composite fields. The theoretical calculations are compatible with experimental results.</p> <br/>Acta Physica Sinica. 1976 25(5): 409-414. Published 2005-08-03 Author(s): HE ZUO-XIU, HUANG TAO <br/><p>This article calculates the radiative decay process π+→e++ v + r of the π+ meson, by employing the field-current identity of the axial vector current which may be deduced from field algebra theory or the quantum theory of composite fields. The theoretical calculations are compatible with experimental results.</p> <br/>Acta Physica Sinica. 1976 25(5): 409-414. Published 2005-08-03 FIELD-CURRENT IDENTITY AND DECAY OF THE PROCESS π&lt;sup&lt;+&lt;/sup&lt;→e&lt;sup&lt;+&lt;/sup&lt;+v+γ HE ZUO-XIU, HUANG TAO 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 409-414. article doi:10.7498/aps.25.409 10.7498/aps.25.409 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.409 409-414 //www.getgobooth.com/en/article/doi/10.7498/aps.25.415 Author(s): ELEMENTARY PARTICLE THEORY GROUP <br/><p>On the basis of our previous report this paper discusses the structure wave functions of mesons formed from a straton and anti-straton pair. We assume that the straton is very heavy and that the interaction is the potential of a harmonic oscillator. Provided the spinor type coupling satisfies certain conditions then the following general results are obtained: (1) The equal spacing relation of the squared mass levels are obtained antomatically, and at the same time the usual difficulty of too high energy values for the ground states is avoided; (2) If the intrinsic weak current of the straton is of the V-A type, and also if its intrinsic electro-magnetic current contains no anomalous magnetic moment, then the inconsistency in the Cabibbo angle for the two body lepton decay of the pseudo-scalar meson and the difficulty in explaining the branching ratios of e+e- decay of various vector mesons may be avoided; (3) A very small SU(3) violation term is sufficient to explain the observed SU(3) mass breaking of mesons. This gives a reasonable explanation why the mass of K is 3.5 times that of the pion while SU(3) symmetry is still manifested in many situations; (4) The expansion of the equation with respect to p2/M2 gives fairly good approximation; (5) The radius of distribution of the straton and anti-straton is compatible in order of magnitude with the observed electro-magnetic radius of the meson; (6) The spinor and momentum structures of the structure wave functions are completely determined by the theory.</p> <br/>Acta Physica Sinica. 1976 25(5): 415-422. Published 2005-08-03 Author(s): ELEMENTARY PARTICLE THEORY GROUP <br/><p>On the basis of our previous report this paper discusses the structure wave functions of mesons formed from a straton and anti-straton pair. We assume that the straton is very heavy and that the interaction is the potential of a harmonic oscillator. Provided the spinor type coupling satisfies certain conditions then the following general results are obtained: (1) The equal spacing relation of the squared mass levels are obtained antomatically, and at the same time the usual difficulty of too high energy values for the ground states is avoided; (2) If the intrinsic weak current of the straton is of the V-A type, and also if its intrinsic electro-magnetic current contains no anomalous magnetic moment, then the inconsistency in the Cabibbo angle for the two body lepton decay of the pseudo-scalar meson and the difficulty in explaining the branching ratios of e+e- decay of various vector mesons may be avoided; (3) A very small SU(3) violation term is sufficient to explain the observed SU(3) mass breaking of mesons. This gives a reasonable explanation why the mass of K is 3.5 times that of the pion while SU(3) symmetry is still manifested in many situations; (4) The expansion of the equation with respect to p2/M2 gives fairly good approximation; (5) The radius of distribution of the straton and anti-straton is compatible in order of magnitude with the observed electro-magnetic radius of the meson; (6) The spinor and momentum structures of the structure wave functions are completely determined by the theory.</p> <br/>Acta Physica Sinica. 1976 25(5): 415-422. Published 2005-08-03 SOME DISCUSSIONS OF THE STRUCTURE WAVE FUNCTIONS OF MESONS IN THE APPROXIMATION OF INSTANTANEOUS INTERACTION (Ⅱ)——THE HARMONIC OSCILLATOR MODEL OF PSEUDO-SCALAR AND VECTOR MESONS ELEMENTARY PARTICLE THEORY GROUP 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 415-422. article doi:10.7498/aps.25.415 10.7498/aps.25.415 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.415 415-422 //www.getgobooth.com/en/article/doi/10.7498/aps.25.423 Author(s): CAO CHANG-QI <br/><p>Although the meson mass spectrum calculated from the simple harmonic potential by the B-S equation fits the experimental data fairly well, the wave function so obtained leads however to unreasonable results when applied to calculate the electromagnetic form factor, which turns out to be complex for space-like q2. It is argued that the reason for this lies in the fact that such a wave function does not possess the correct analytical property for the variable p0. In order to guarantee this analyti-city as well as to maintain the covariant form, it is adequate to express the wave function in the form of an integral representation according to a theorem proved by Dyson. Furthermore, some summation rules for the spectral function in the integral representation are derived with the physical condition that the wave function should be finite at x = 0.</p> <br/>Acta Physica Sinica. 1976 25(5): 423-432. Published 2005-08-03 Author(s): CAO CHANG-QI <br/><p>Although the meson mass spectrum calculated from the simple harmonic potential by the B-S equation fits the experimental data fairly well, the wave function so obtained leads however to unreasonable results when applied to calculate the electromagnetic form factor, which turns out to be complex for space-like q2. It is argued that the reason for this lies in the fact that such a wave function does not possess the correct analytical property for the variable p0. In order to guarantee this analyti-city as well as to maintain the covariant form, it is adequate to express the wave function in the form of an integral representation according to a theorem proved by Dyson. Furthermore, some summation rules for the spectral function in the integral representation are derived with the physical condition that the wave function should be finite at x = 0.</p> <br/>Acta Physica Sinica. 1976 25(5): 423-432. Published 2005-08-03 NOTE ON THE ELECTROMAGNETIC FORM FACTOR AND INTEGRAL REPRESENTATION OF THE WAVE FUNCTION IN THE STRATON MODEL CAO CHANG-QI 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 423-432. article doi:10.7498/aps.25.423 10.7498/aps.25.423 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.423 423-432 //www.getgobooth.com/en/article/doi/10.7498/aps.25.433 Author(s): WU SHI-SHU <br/><p>In this paper a theorem is proved and some of its applications discussed. The theorem gives an answer to the question: Under what conditions does the following relation εα±[Eα(N±1)-E0(N)] hold exactly? In the above relation, the εα′s are the single-particle (sp) energiesdetermined by the corresponding sp potential, E0(N) is the exact ground stateenergy of a closed-shell nucleus N, and the Eα(N±1)′s denote the exact energy eigenvalues of its neighbouring N ±1 nucleus.</p> <br/>Acta Physica Sinica. 1976 25(5): 433-443. Published 2005-08-03 Author(s): WU SHI-SHU <br/><p>In this paper a theorem is proved and some of its applications discussed. The theorem gives an answer to the question: Under what conditions does the following relation εα±[Eα(N±1)-E0(N)] hold exactly? In the above relation, the εα′s are the single-particle (sp) energiesdetermined by the corresponding sp potential, E0(N) is the exact ground stateenergy of a closed-shell nucleus N, and the Eα(N±1)′s denote the exact energy eigenvalues of its neighbouring N ±1 nucleus.</p> <br/>Acta Physica Sinica. 1976 25(5): 433-443. Published 2005-08-03 ON NUCLEAR SINGLE-PARTICLE POTENTIALS (Ⅰ)——A THEOREM WU SHI-SHU 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 433-443. article doi:10.7498/aps.25.433 10.7498/aps.25.433 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.433 433-443 //www.getgobooth.com/en/article/doi/10.7498/aps.25.444 Author(s): LI GUO-DONG, XU YING-TING <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 444-449. Published 2005-08-03 Author(s): LI GUO-DONG, XU YING-TING <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 444-449. Published 2005-08-03 STUDY OF THE MOSSBAUER EFFECT OF A BISMUTH CALCIUM VANADIUM IRON GARNET LI GUO-DONG, XU YING-TING 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 444-449. article doi:10.7498/aps.25.444 10.7498/aps.25.444 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.444 444-449 //www.getgobooth.com/en/article/doi/10.7498/aps.25.450 Author(s): LI DE-ZHONG, WANG YING-JUN, CHEN SHU-CHAO, XIE KAN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 450-454. Published 2005-08-03 Author(s): LI DE-ZHONG, WANG YING-JUN, CHEN SHU-CHAO, XIE KAN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 450-454. Published 2005-08-03 EXPERIMENTAL OBSERVATIONS OF SOME MAGNETO-OPTICAL MATERIALS LI DE-ZHONG, WANG YING-JUN, CHEN SHU-CHAO, XIE KAN 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 450-454. article doi:10.7498/aps.25.450 10.7498/aps.25.450 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.450 450-454 //www.getgobooth.com/en/article/doi/10.7498/aps.25.455 Author(s): ZHANG TIE-ZHENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 455-459. Published 2005-08-03 Author(s): ZHANG TIE-ZHENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(5): 455-459. Published 2005-08-03 EARTHQUAKE FORECASTING BY A METHOD OF DOUBLING THE MAGNETIC-STORM INTERVAL ZHANG TIE-ZHENG 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(5): 455-459. article doi:10.7498/aps.25.455 10.7498/aps.25.455 Acta Physica Sinica 25 5 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.455 455-459

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