Collective states and shape competition in Te-126
Collective states and shape competition in Te-126
复制标题
Te-126 中的集体状态和塑造竞争
DOI：
10.1088/1674-1137/41/4/044003
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发表时间：
2017
影响因子：
3.6
通讯作者：
Ding Huai Bo
中科院分区：
文献类型：
--
作者：
He Liu Chun;Zheng Yun;Zhu Li Hua;Ma Hai Liang;Wu Xiao Guang;He Chuang Ye;Li Guang Sheng;Wang Lie Lin;Hao Xin;Liu Ying;Li Xue Qin;Pan Bo;Li Zhong Yu;Ding Huai Bo
用在束γ谱研究了能量为48 MeV的124 Sn（7 Li，1 p4 n）126 Te反应中126 Te的高自旋态.丰富了已有的能级方案，建立了新的负宇称序列。正宇称带随自旋的变化在三轴形状和集体扁圆形状之间变化。特别地，在I π= 8+态的势能面上出现了三个竞争极小值，其中一个对准态位于γ=− 120，两个三轴态分别位于γ = 30和− 45。讨论了负宇称带的签名分裂行为。随着角动量增加的形状变化和签名分裂可以很好地解释在Cranked Nilsson-Strutinsky-Bogoliubov和Cranked Nilsson-Strutinsky模型计算。
High-spin states in 126 Te have been investigated by using in-beam γ ray spectroscopy with the 124 Sn (7 Li, 1p4n) 126 Te 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 at γ∼ 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.