Angular momentum projection for a Nilsson mean-field plus pairing model

被引：1

作者：

Wang, Yin ^{[1
,2
]}

Pan, Feng ^{[1
,3
]}

Launey, Kristina D. ^{[3
]}

Luo, Yan-An ^{[4
]}

Draayer, J. P. ^{[3
]}

机构：

[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China

[2] Chifeng Univ, Dept Phys, Chifeng 024000, Peoples R China

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[4] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

来源：

NUCLEAR PHYSICS A | 2016年 / 950卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Nilsson shell model; Angular momentum projection; Pairing interaction; SD-SHELL NUCLEI; PARTICLE CONFIGURATION-SPACES; HARTREE-BOGOLIUBOV THEORY; CORE BOSE-HUBBARD; LIGHT-NUCLEI; COLLECTIVE MOTION; ENERGY-LEVELS; HIGH-SPIN; STATE; NE-20;

D O I：

10.1016/j.nuclphysa.2016.03.012

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 angular momentum projection for the axially deformed Nilsson mean-field plus a modified standard pairing (MSP) or the nearest-level pairing (NLP) model is proposed. Both the exact projection, in which all intrinsic states are taken into consideration, and the approximate projection, in which only intrinsic states with K = 0 are taken in the projection, are considered. The analysis shows that the approximate projection with only K = 0 intrinsic states seems reasonable, of which the configuration subspace considered is greatly reduced. As simple examples for the model application, low-lying spectra and electromagnetic properties of O-18 and Ne-18 are described by using both the exact and approximate angular momentum projection of the MSP or the NLP, while those of Ne-20 and Mg-24 are described by using the approximate angular momentum projection of the MSP or NLP. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1 / 28

页数：28

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