偶-偶Er同位素核的γ自由度效应

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

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.