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Structure of Positive-parity Levels in 138 Ce Nucleus in Microscopic sdIBM-2+2q.p
Author(s): 
Pages: 136-138,142
Year: Issue:  10
Journal: JOURNAL OF CHONGQING UNIVERSITY(NATURAL SCIENCE EDITION)

Keyword:  微观sdIBM-2+2q.p 方案拆对高自旋态138 Ce核;
Abstract: 基于微观相互作用玻色子-费米子形式体系,构造出唯象IBM-1+2q.p 模型的微观实现,微观sdIBM-2+2q.p 方案.应用它成功地再现了138Ce核的基态带,β带,γ带和部分高自旋态能谱.给出了近来实验上观察到该核有与单粒子态共存的集体性结构的一种解释.模型给出了一个玻色子从退耦,拆散,占据闯入轨道到参加顺排所需要的最小能量值.计算出的微观信息表明:一个d玻色子的突然拆对不会引起核状态突变;核子顺排释放的能量有利于其它玻色子再拆对;138Ce核的高自旋态属于两准质子转动带.
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