Collective states and shape competition in ^126Te

High-spin states in ^126Te have been investigated by using in-beam γ ray spectroscopy with the ^124Sn（^7Li,1p4n）^126Te reaction at a beam energy of 48 MeV.The previously known level scheme has been enriched,and a new negative-parity sequence has been established.The yrast positive-parity band shows...

Full description

Saved in:
Bibliographic Details
Published in:中国物理C：英文版 2017, Vol.41 (4), p.60-68
Main Author: 何鎏春 郑云 竺礼华 马海亮 吴晓光 贺创业 李广生 王列林 郝昕 刘颖 李雪琴 潘波 李忠宇 丁怀博
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High-spin states in ^126Te have been investigated by using in-beam γ ray spectroscopy with the ^124Sn（^7Li,1p4n）^126Te reaction at a beam energy of 48 MeV.The previously known level scheme has been enriched,and a new negative-parity sequence has been established.The yrast positive-parity band shows a shape change between triaxial shape and collective oblate shape as a function of spin.In particular,three competitive minima appear in the potential energy surface for the I^π=8^＋ states,with one aligned state at γ =-120° and two triaxial states atγ -30° and-45°,respectively.The signature splitting behavior of the negative-parity band is discussed.The shape change with increasing angular momentum and the signature splitting can be interpreted well in terms of the Cranked Nilsson-Strutinsky-Bogoliubov and Cranked Nilsson-Strutinsky model calculations.
ISSN:1674-1137
0254-3052