节点文献
奇奇核90Nb的高自旋态研究
Study of High Spin States in Odd-odd Nucleus 90Nb
【摘要】 用能量为80MeV的19F束通过反应76Ge(19F,5n)90Nb布居了90Nb的高自旋态.通过在束γ测量分析90Nb退激γ射线的符合级联关系,发现了19条新的属于90Nb的γ跃迁,建立了90Nb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N=49核素的系统比较,确认了新能级的自旋和宇称.
【Abstract】 The high spin states of90Nb have been populated via reaction76Ge(19F, 5n)90Nb at beam energy of 80 MeV. The de-exciting γ-rays have been measured with in-beam γ-ray spectroscopy method. After γ-γ coincidence analysis, 19 new γ transitions were identified and assigned to90Nb. The new level scheme of90Nb 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 N=49 neighboring nuclei.
【Key words】 high spin state; in-beam γ-ray spectroscopy; nuclear shell model; configuration;
- 【文献出处】 原子核物理评论 ,Nuclear Physics Review , 编辑部邮箱 ,2004年04期
- 【分类号】O571.21
- 【下载频次】36