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90Nb和91Nb的高自旋态结构
Study of High Spin States in 90Nb and 91Nb
【作者】 崔兴柱; 竺礼华; 吴晓光; 李广生; 温书贤; 王治民; 贺创业; 张振龙; 孟锐; 马瑞刚; 骆鹏; 郑勇; 霍俊德; M.M.Ndontchueng;
【Author】 CUI Xing-Zhu ZHU Li-Hua WU Xiao-Guang LI Guang-Sheng WEN Shu-Xian WANG Zhi-Min HE Chuang-Ye ZHANG Zhen-Long MENG Rui MA Rui-Gang LUO Peng ZHENG Yong HUO Jun-De M. M. Ndontchueng (China Institute of Atomic Energy, Beijing 102413, China) (Department of Physics, Jilin University, Changchun 130023, China) (Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China) (Université de Douala, Faculté de Sciences, B.P. 8580 Cameroun)
【机构】 中国原子能科学研究院; 中国科学院兰州近代物理研究所; 吉林大学物理学院; Université de Douala Faculté de Sciences,B.P.8580 Cameroun;
【摘要】 用能量为80MeV的19F束通过反应76Ge(19F,xn)布居了90Nb和91Nb的高自旋态.通过在束测量分析90Nb和91Nb退激射线的符合级联关系,发现了新的属于90Nb和91Nb的跃迁,建立了90Nb和91Nb的高自旋态能级纲图.通过经验壳模型计算指定了部分能级的组态,并结合实验DCO比值和与相邻核素的系统比较,确认了新能级的自旋和宇称.
【Abstract】 The high spin states of 90Nb and 91Nb have been populated via reaction 76Ge(19F,xn) at beam energy of 80MeV. The de-exciting γ-rays have been measured with in-beam γ-ray spectroscopy method. After γ-γ coincidence analysis, the new level scheme of 90Nb and 91Nb was established. Based on the semi-empirical shell model calculations, the configurations of the levels have been suggested, in addition, the spins and parities of the new levels have been assigned according to the experimental DCO values and to the systematic comparison with the neighboring nuclei.
【Key words】 high spin state; in-beam γ-ray spectroscopy; level scheme; nuclear shell model; configuration;
- 【会议录名称】 第十次全国核结构研讨会论文集
- 【会议名称】第十次全国核结构研讨会
- 【会议时间】2004-07
- 【会议地点】中国贵州花溪
- 【分类号】O571.22
- 【主办单位】中国核物理学会核结构专业委员会、北京大学、贵州民族学院