论文标题
中子缺陷th的不对称至对称裂变转变的描述 - 张量力的作用
Description of the asymmetric to symmetric fission transition in the neutron-deficient Thoriums -- Role of the tensor force
论文作者
论文摘要
在本研究中，我们研究了张量力对裂变路径的影响，特别是在第230、226、222、222和216位同位素中的对称和不对称屏障，这些屏障表现出不对称的对称裂变过渡。使用D1ST2A GOGNY+TENSOR项相互作用（Q 20，Q 30，Q 40）作为集体变量约束，在HFB方法中进行了该分析，并与标准D1S GOGNY相互作用结果进行了比较。张量项对势能表面局势的影响，尤其是对屏障高度及其拓扑的影响，与实验数据一致，在描述外来的acttinide裂变的描述中至关重要。我们得出的结论是，应将张量术语集成到有效相互作用的远距离部分，以更好地描述裂变。
In the present study, we have investigated the impact of the tensor force on fission paths, in particular the symmetric and asymmetric barriers in 230 Th, 226 Th, 222 Th and 216 Th isotopes which display an asymmetric to symmetric fission transition. This analysis has been performed within the HFB approach with (Q 20 ,Q 30 ,Q 40 ) as collective variable constraints, using the D1ST2a Gogny+tensor term interaction and comparing to the standard D1S Gogny interaction results. The effects from the tensor term on the potential energy surface landscape, and especially on barrier heights and its topology by opening a new valley in agreement with experimental data, are found to be crucial in the description of exotic actinide fission. We conclude that a tensor term should be integrated to the long range part of the effective interaction for a better description of the fission.
