First observation of high-spin states in 116In and possible new region of chirality
First observation of high-spin states in 116In and possible new region of chirality
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DOI：
10.1016/j.physletb.2023.137789
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发表时间：
2023-02
影响因子：
4.4
通讯作者：
W.Z. Xu;S. Wang;X. Wu;H. Jia;C. Liu;H. Bai;Y.J. Li;B. Qi;H. Zhang;G. Li;Y. Zheng;C.B. Li;L. Mu;A. Rohilla;S. Wang;D. Sun;Z.Q. Li;N. Zhang;R. Guo;X.C. Han;X. Xiao
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文献类型：
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作者：
W.Z. Xu;S. Wang;X. Wu;H. Jia;C. Liu;H. Bai;Y.J. Li;B. Qi;H. Zhang;G. Li;Y. Zheng;C.B. Li;L. Mu;A. Rohilla;S. Wang;D. Sun;Z.Q. Li;N. Zhang;R. Guo;X.C. Han;X. Xiao
用能量为42 MeV的7 Li在116 Cd靶上的不完全聚变首次观察到富中子同位素116 In的高自旋态。一个负宇称带为π g 9/2− 1 π ν h 11/2组态，一对正宇称二重带为π g 9/2− 1 π ν（g 7/2/d 5/2）h 11/2 2组态。正宇称二重带被初步解释为手征二重带，这是由绝热和构型固定约束的三轴相对论平均场和多粒子加转子模型计算支持。这个观测报告了一个可能的新的手征区域，在富中子的A120质量区。
High-spin states in neutron-rich indium isotope 116 In have been observed for the first time by using incomplete fusion of 7 Li on a 116 Cd target at a beam energy of 42 MeV. A negative-parity band with π g 9/2− 1⊗ ν h 11/2 configuration and a pair of positive-parity doublet bands with π g 9/2− 1⊗ ν (g 7/2/d 5/2) h 11/2 2 configurations have been identified. The positive-parity doublet bands are tentatively interpreted as chiral doublet bands, which is supported by the adiabatic and configuration-fixed constrained triaxial relativistic-mean-field and multiparticle plus rotor model calculations. This observation reports a possible new region of chirality in neutron-rich A≈ 120 mass region.