Triaxial Shape in ^(129)Ce  

作　　者：LIU Ying WU Xiao-guang ZHU Li-hua LI Guang-sheng HE Chuang-ye LI Xue-qin PAN Bo HAO Xin LI Li-hua WANG Zhi-min LI Zhong-yu XU Qiang WANG Jian-guo DING Huai-bo ZHAI Jian 

机构地区：[1]不详 [2]Peking University [3]Tsinghua University [4]Jilin University

出　　处：《Annual Report of China Institute of Atomic Energy》2007年第1期98-99,共2页中国原子能科学研究院年报（英文版）

基　　金：National Natural Science Foundation of China (10675171, 10105015, 10175070, 10375092, 10575133);Major State Basic Research Development Programme (G2000077405)

摘　　要：The experiment was carried out in the HI-13 tandem accelerator at the China Institute of Atomic Energy. The high-spin states of 129Ce have been populated via heavy-ion fusion evaporationThe experiment was carried out in the HI-13 tandem accelerator at the China Institute of Atomic Energy. The high-spin states of ^129Ce have been populated via heavy-ion fusion evaporation reaction ^96Mo（^37Cl, 1p3n）^129Ce. The beam energy was 155 MeV and the target was of thickness 1.0 mg/cm^2, mounted on a 19 mg/cm^2 Pb backing. The γ-ray from the evaporated residues were detected with an array consisting of fifteen Compton suppressed HPGe-BGO spectrometers. More than 2.46× 10^8 γ-γ coincidence events were collected. The lifetimes and quadrupole moments Qt have been extracted from the lineshape analyses using DSAM. The deformation of the negative band of ^129Ce was extracted from the Qt and JRR.

关 键 词：铈 原子核 三维结构 高自旋态 原子能 

分 类 号：O571.2[理学—粒子物理与原子核物理]