| 微观半经典Vlasov框架下的巨偶极共振的系统学与同位旋效应 |
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| 引用本文： | 王建松,沈文庆,马余刚,蔡廷璜,冯军,方德清,蔡翔舟,苏前敏.微观半经典Vlasov框架下的巨偶极共振的系统学与同位旋效应[J].中国物理 C,2000,24(3):256-261. |
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| 作者姓名： | 王建松 沈文庆 马余刚 蔡廷璜 冯军 方德清 蔡翔舟 苏前敏 |
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| 作者单位： | [1]中国科学院上海原子核研究所，上海201800 [2]中国高等科学技术中心，北京100080 |
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| 基金项目： | 中国科学院资助项目，国家自然科学基金，上海市科技发展基金，19705012，19625513，97XD14020，，， |
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| 摘 要： | 用微观半经典Vlasov方法研究了同位旋矢量巨偶极共振(GDR)的系统学.计算的GDR强度分布的峰位能量和宽度与实验结果是一致的,并与经验公式相符.计算还表明峰位能量有微小的同位旋效应,而峰的宽度几乎没有同位旋效应.
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| 关 键 词： | 巨偶极共振 Vlasov方法 同位旋效应 |
| 收稿时间： | 1999-1-22 |
Systematics of the GDR in the Frame of the Microscopic Vlasov Method |
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| WANG JianSong,SHEN WenQing,MA YuGang,CAI YanHuang,FENG Jun,FANG DeQing,CAI XiangZhou,SU QianMin.Systematics of the GDR in the Frame of the Microscopic Vlasov Method[J].High Energy Physics and Nuclear Physics,2000,24(3):256-261. |
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| Authors: | WANG JianSong SHEN WenQing MA YuGang CAI YanHuang FENG Jun FANG DeQing CAI XiangZhou SU QianMin |
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| Abstract: | The systematics of the isovector Giant Dipole Resonance is studied via the microscopic semi-classical Vlasov method. The Woods-Saxon potential is used in the calculation with the different parameters for neutron and proton, respectively. It is found that the peak energies of the GDR strength distribution follow the empirical formula and agree with the experimental data. The GDR widths agree with the experimental data in the error bar. On the basis of these studies, we have investigated the GDR properties of Ca isotopes and three isomers with mass number A = 40, 100 and 208. The studies show that the effects of isospin on the peak energies of the GDR strength distribution are small, Which rise slowly with the increase of (N - Z)/A. The isospin effects on the GDR width are not observed. |
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| Keywords: | GDR Vlasov method isospin effect |
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