Nuclear structure of Hf-178 related to the spin-16, 31-year isomer
Nuclear structure of Hf-178 related to the spin-16, 31-year isomer
复制标题
DOI：
10.1016/j.physletb.2004.03.066
复制
发表时间：
2004-05
影响因子：
4.4
通讯作者：
Yang Sun;Xian-Rong Zhou;G. Long;E. Zhao;P. Walker
中科院分区：
文献类型：
--
作者：
Yang Sun;Xian-Rong Zhou;G. Long;E. Zhao;P. Walker
用投影壳层模型研究了178hf的多准粒子和集体激发。在轴对称的基础上，自旋为16的2.4 MeV异构体在能量/自旋空间上与其他构型有很好的分离。然而，投射能量面计算表明，178hf对轴对称形状具有明显的柔软性，这可以强烈地改变能级分布。讨论了该异构体光去激发的意义。
The projected shell model is used to study the multi-quasiparticle and collective excitations of178Hf. With an axially symmetric basis, the spin-16 isomer at 2.4 MeV appears to be well separated in energy/spin space from other configurations. However, projected energy surface calculations suggest that178Hf has significant softness to axially asymmetric shapes, which can strongly modify the level distribution. The implications for photodeexcitation of the isomer are discussed.