Shell gaps and pn pairing interaction in N = Z nuclei

被引：5

作者：

Kaneko, Kazunari ^{[3
]}

Zhang, Jing-Ye ^{[2
]}

Sun, Yang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[3] Kyushu Sangyo Univ, Dept Phys, Fukuoka 8138503, Japan

来源：

PHYSICS LETTERS B | 2009年 / 671卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Shell gap; N = Z nuclei; pn pairing; Nuclear shell model;

D O I：

10.1016/j.physletb.2008.11.072

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the observed shell gaps in N = Z nuclei determined from the binding energy differences. It is found that the shell gaps can be described by the combined contributions from the single-particle level spacing, the like-nucleon pairing, and the proton-neutron pairing interaction. This conclusion is consistent with that of Chasman in [R.R. Chasman, Phys. Rev. Lett. 99 (2007) 082501]. For the double-closed shell N = Z nuclei, the single-particle level spacings calculated with Woods-Saxon potential are very close to those obtained by subtracting the nn pairing interaction from the observed shell gap. For the sub-closed or non-closed shell N = Z nuclei, the pn pairing interaction is shown to be important for the observed shell gaps. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：42 / 45

页数：4

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