Near-Yrast Structures in Odd-Odd I-122 Nucleus

作者：Liu Gong-Ye; Li Li; Li Xian-Feng; Yu De-Yang; Sun Ji; Li Cong-Bo; Ma Ying-Jun^*; Wu Xiao-Guang; He Chuang-Ye; Zheng Yun; Zhu Li-Hua; Zhao Yan-Xin

来源：Chinese Physics Letters, 2012, 29(9): 092301.

DOI：10.1088/0256-307X/29/9/092301

• HIGH-SPIN STATES
• BAND TERMINATION
• IDENTIFICATION
• H(11/2)
• I-116

Excited states of the odd-odd nucleus I-122 are investigated via the fusion-evaporation reaction Cd-116(B-11,5n) at a beam energy of 68MeV. The two most strongly populated bands in I-122 are observed up to excitation energies around 10.5MeV. Their possible configurations at lower spins are assigned to pi h(11/2) circle times nu h(11/2) and pi h(11/2) nu d(5/2) based on the observed population, B(M1)/B(E2) values, alignments and signature splitting. E1 transitions are observed connecting the pi h(11/2) circle times nu d(5/2) band to the pi h(11/2) circle times nu h(11/2) band, which may be evidence of octupole collectivity. Band terminations caused by the full alignment of the valence nucleons outside the Sn-114 core are observed in both bands.

• 出版日期2012-9
• 单位北京航空航天大学; 中国原子能科学研究院; 黑龙江大学; 吉林大学