| ~(154)Sm,~(156,158)Gd,~(158)Dy核结构研究 |
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| 引用本文： | 黄永祥,苏耀中,石宗仁.~(154)Sm,~(156,158)Gd,~(158)Dy核结构研究[J].徐州师范大学学报(自然科学版),1990(3). |
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| 作者姓名： | 黄永祥 苏耀中 石宗仁 |
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| 作者单位： | 徐州师范学院物理系
(黄永祥，苏耀中)，中国原子能科学院(石宗仁) |
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| 摘 要： | 本文利用IBA2理论,从SU(3)极限参数出发,通过对激发能及B(E2) 值的理论与实验的比较, 找到了~(154)Sm,~(156、158)Gd,~(158)Dy核的Hamiltonian最佳参数。参数说明:~(154)Sm含有较大的振动成分;~(156)Gd,~(158)Gd是二个典型的SU(3)核;而~(158)Dy含有少量U(5)和少量O(6)成分的类SU(3)核,计算结果表明:稀土变形核的最佳参数及有效电荷有系统的规律。通过F旋破缺,可以解释低激发态间的M1跃迁。
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| 关 键 词： | SU（3）极限 变形核 激发能 E2跃迁 M1跃迁 有效电荷 |
THE STUDIES OF ~154Sm , ~156Gd , ~158Gd , ~158Dy NUCLEAR STRUCTURES |
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| Huang,Yongxiang,Su,Yaozhong,Shi Zongren.THE STUDIES OF ~154Sm , ~156Gd , ~158Gd , ~158Dy NUCLEAR STRUCTURES[J].Journal of Xuzhou Normal University(Natural Science Edition),1990(3). |
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| Authors: | Huang Yongxiang Su Yaozhong Shi Zongren |
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| Institution: | Huang Yongxiang Su Yaozhong Shi Zongren |
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| Abstract: | With the theory of IBA2, the best Hamiltonian parameters of nuclcj 154Sm, 156Gd, 158Gd and 158Dy has been found from SU(3) limited ones, through comparing the theoretical and experimental value of excited energies and B(E2); From these, it is known that 154Sm is a larger vibrational component nucleus; 156Gd and 158Gd are two typical SU(3) nuclei; 158Dy is a like -SU(3) nucleus with a Utter U(5) and O(6) components. The calculations show that the best parameters and the effective clcctic charges of rare-earth deformed unclei have systematic rules. Through the F-spin breaking ,the M1 excitations between low-cxcitd states bavc been explained. |
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| Keywords: | SU(3) limit deformed nucleus excited energy E2 excitation Ml excitation effective electric charge |
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