偶-偶Er同位素核的γ自由度效应  

Non-axial Parameter γ Effects on Even-Even Er Isotopes

作　　者：钟纪泉[1] 张学谦[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《高能物理与核物理》1997年第2期176-179,共4页High Energy Physics and Nuclear Physics

摘　　要：根据 Davydov 和 Filippov 的非轴对称转子模型,从实验的 E(2_2^+)/E(2_1^+)以及 E(2^+_1)值,提取了偶-偶 Er 同位素核的四极形变β与非轴对称γ参数.结果表明,Davydov 和 Filippov 关于非轴对称转子的理论,与过渡区核的低激发谱的实验结果相符合,表明在^(157)Tm 中非轴对称性是重要的.Based on the non-axial rotor model given by davydov and Filippov,the deformation parameter β and non-axial parameter γ of even-even Er isotopes are determined from the energy of the first 2^+ level and the energy ratio of the second 2^+ level and the first one.The present work indicates that this model is consistent with the experimental results in the transitional region.It also shows that the non-axial effects on ^(157)Tm nuclide are of importance.

关 键 词：非轴对称 转子模型 非轴对称效应 铒同位素 

分 类 号：O614.344[理学—无机化学]