Structure change of 156Yb at high-spin states

• Published in: Chinese physics C Vol. 33; no. z1; pp. 148 - 150
• Main Authors: Hui, Hua, Zhong-Yu, Li, Shou-Yu, Wang, Jie, Meng, Zhi-Huan, Li, Xiang-Qing, Li, Fu-Rong, Xu, Hong-Liang, Liu, Shuang-Quan, Zhang, Shan-Gui, Zhou, Yan-Lin, Ye, Dong-Xing, Jiang, Tao, Zheng, Li-Hua, Zhu, Xiao-Guang, Wu, Guang-Sheng, Li, Chuang-Ye, He, Li-Ying, Ma, Fei, Lu, Feng-Ying, Fan, Li-Ying, Han, He, Wang, Jun, Xiao, Xue-Qin, Li, Dong, Chen, Xiao, Fang, Jian-Lin, Lou, Ying, Liu, Xin, Hao, Bo, Pan, Li-Hua, Li
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.03.2009; Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China%China Institute of Atomic Energy, Beijing 102413, China; School of Physics and MOE key laboratory of Heavy Ion Physics, Peking University, Beijing 100871, China%Department of Space Science and Applied Physics, Shandong University at Weihai, Weihai 264209, China%Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China
• Subjects: 156Yb; fusion-evaporation; high-spin states; alignment; structure change
• ISSN: 1674-1137; 2058-6132
• DOI: 10.1088/1674-1137/33/S1/047

O4; High-spin states of 156Yb have been studied via the 144Sm(16O,4n)156Yb fusion-evaporation reaction at beam energy 102 MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. The characteristics of the negative-parity sequence above the 25- state may related to the excitation from the nucleon in the Z = 64, N = 82 core. The E-GOS curve for the positive-parity yrast sequence in 156Yb indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. The Cranked Woods-Saxon-Strutinsky calculations by means of Total-Routhian-Surface (TRS) methods has been made to understand this structure change.