LI Guang-Sheng1, MENG Rui2, ZHU Li-Hua1, ZHANG Zhen-Long2, WANG Yue2, WANG Zhi-Min1, WEN Shu-Xian1, LU Jing-Bin2, ZHAO Guang-Yi2, LI Xian-Feng2, WEN Li-Jun2, ZHENG Yong-Nan1, ZHENG Yong3, LIU Yun-Zuo2, YUAN Guan-Jun1, YANG Chun-Xiang1
1China Institute of Atomic Energy, Beijing 102413
2Department of Physics, Jilin University, Changchun 130023
3Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
1China Institute of Atomic Energy, Beijing 102413
2Department of Physics, Jilin University, Changchun 130023
3Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
Abstract： The fusion--evaporation reaction 116Sn (19F, p3n) 131Ce at projectile energy of 95 MeV is used to populate high spin states in 131Ce. The de-exciting γ-rays are detected in γ-γ coincidence measurement with Compton-suppressed BGO-HPGe detectors. Level lifetimes of 131Ce were determined by using the Doppler shift attenuation method. The experimental results indicate that collectivity of 131Ce is reduced relative to that of 130Ce and it follows that deformation decreases with increase of the neutron number on the basis of systematic comparison of transition quadrupole moments for the light cerium isotopes.
CHE Xing-Lai;ZHU Sheng-Jiang;J. H. Hamilton;A. V. Ramayya;J. K. Hwang;J. O. Rasmussen;Y. X. Luo;CHEN Yong-Jing;LI Ming-Liang;DING Huai-Bo;U Yong-Nam;I. Y. Lee;W. C. Ma. High Spin Band Structure in 112Ru[J]. 中国物理快报, 2006, 23(2): 328-331.
WANG Shou-Yu;MA Ying-Jun;T. Komatsubara;LIU Yun-Zuo;ZHANG Yu-Hu;K. Furuno;T. Hayakawa;J. Mukai;Y. Iwata;T. Morikawa;G. B. Hagemann;G. Sletten;J. Nyberg;D. Jerrestam;H. J. Jensen;J. Espino;J. Gascon;N. GjФrup;B. Cederwall;P. O. TjФm. Structure of the πg7/2 [404] 7/2+ Band in Odd Proton Nucleus 123I[J]. 中国物理快报, 2004, 21(6): 1024-1026.
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LIU Min-Liang;ZHANG Yu-Hu;ZHOU Xiao-Hong;GUO Ying-Xiang;LEI Xiang-Guo;LIU Zhong;HE Jian-Jun;WEN Shu-Xian;WU Xiao-Guang;YUAN Guan-Jun. Decay of the 67-μs Isomer in 142Pm[J]. 中国物理快报, 2004, 21(4): 626-628.
2004, Vol. 21 
