奇奇核^(168)Lu高自旋态及三轴超形变带的研究

Theoretical Research on Traxial Superdeformed Band and High Spin State Nuclei in ^(168)Lu

采用TRS方法对16 8Lu新发现的 4条转动带进行了理论计算 ,证实了在实验上观测到的一条三轴超形变带 ,并得到其形变参数值 .本工作还对准粒子能量随角频率的变化进行了研究 ,对实验结果给出了合理解释 ,说明了为什么实验上很难找到第 4条转动带的旋称伙伴带 .

The three dimensional Total Routhian Surface calculations are carried out to analyze the four rotational bands in 168Lu observed recently. One of these four bands is identified as triaxial superdeformed band, which is consistent with the experimental assignment. The values of its deformation parameters ε2, ε4, γ are derived respectively from the analysis. The quasi-particle energy variation with the rotational frequency ω is explained reasonably. The reason, why the signature partner of the fourth band has not been found experimentally, is also given.