Eur. Phys. J. A (2017) 53: 26
https://doi.org/10.1140/epja/i2017-12216-7

Regular Article - Theoretical Physics

A study of Gamow-Teller transitions for N = Z nuclei, ²⁴Mg, ²⁸Si, and ³²S, by a deformed QRPA

Origin of Matter and Evolution of Galaxy Institute and Department of Physics, Soongsil University, 156-743, Seoul, Korea

^* e-mail: cheoun@ssu.ac.kr

Received: 8 November 2016
Accepted: 28 January 2017
Published online: 15 February 2017

Abstract

We investigated Gamow-Teller (GT) transitions and strength distributions of s-d shell N = Z nuclei, ²⁴Mg, ²⁸Si, and ³²S, by a deformed quasi-particle random phase approximation (DQRPA). In the DQRPA, we included particle model space up to p-f shell and considered explicitly the deformation as well as the like- and unlike-pairing correlations. Shell evolution by deformation and attractive force by unlike-pairing correlations turned out to play vital roles to reproduce the experimental GT data. Correlations between the deformation and the pairing correlations are also discussed with the comparison to the experimental data shape.