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
收藏
页码：42 / 45
页数：4
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