EFFECT OF GROUND-STATE CORRELATION ON THE TOTAL GAMOW-TELLER STRENGTH OF DOUBLY LS CLOSED SHELL NUCLEI

被引：4

作者：

HINO, M

机构：

[1] Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152, Oh-Okayama

来源：

NUCLEAR PHYSICS A | 1991年 / 531卷 / 02期

关键词：

D O I：

10.1016/0375-9474(91)90613-B

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The total Gamow-Teller (GT) strength in the doubly LS closed-shell nuclei is calculated by the sum-rule technique in the shell model. 2p2h states are admixed to the ground state in first-order perturbation. The deviation of the orbital occupancy from that of the closed shell state is found to produce a considerable amount of GT strength. It is shown, however, that the total GT strength produced gets reduced by about one-half by the proton-neutron correlation effect. From the point of view of the Wigner supermultiplet SU(4) theory, the proton-neutron correlation effect and the tensor-force dominant property of the total GT strength are successfully explained.

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页码：285 / 298

页数：14

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