Nuclear clusters bound to doubly magic nuclei: The case of Po-212
Nuclear clusters bound to doubly magic nuclei: The case of Po-212
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核团簇与双魔核结合：Po-212 的案例
DOI：
10.1103/physrevc.90.034304
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发表时间：
2014
影响因子：
3.1
通讯作者：
Zhou Bo
中科院分区：
文献类型：
--
作者：
Roepke G.;Schuck P.;Funaki Y.;Horiuchi H.;Ren Zhongzhou;Tohsaki A.;Xu Chang;Yamada T.;Zhou Bo
对于粒子被束缚在双幻核上的情况，导出了有效粒子方程。作为一个例子，我们考虑了西奥多的核心。我们认为核心原子核是无限重的，因此粒子相对于一个固定的中心运动，也就是说，可以忽略反冲效应。讨论了该问题的完全量子解。这种方法的灵感来自Tohsaki-Horiuchi-Schuck-Röpke波函数概念，该概念已成功应用于轻核。通过包括当物质密度变低时具有相关性的四粒子(类)关联，改进了壳模型的计算。在类团簇穿透核核的区域，内禀束缚态波函数在临界密度下转变为非束缚四核子壳层模型态。文中给出了探索性计算。这种预先形成的团簇状态很难用壳模型计算来描述。讨论了类安团簇与类氚团簇物理行为不同的原因。
An effective-particle equation is derived for cases where anparticle is bound to a doubly magic nucleus. As an example, we considerwith theon top of thecore. We consider the core nucleus infinitely heavy, so that theparticle moves with respect to a fixed center; that is, recoil effects are neglected. The fully quantal solution of the problem is discussed. The approach is inspired by the Tohsaki-Horiuchi-Schuck-Röpke wave function concept that has been successfully applied to light nuclei. Shell-model calculations are improved by including four-particle (-like) correlations that are of relevance when the matter density becomes low. In the region where the-like cluster penetrates the core nucleus, the intrinsic bound-state wave function transforms at a critical density into an unbound four-nucleon shell-model state. Exploratory calculations forare presented. Such preformed cluster states are very difficult to describe with shell-model calculations. Reasons for the different physics behavior of an-like cluster with respect to a deuteron-like cluster are discussed.