中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
165Er的高自旋态研究

文献类型:学位论文

作者王世陶
答辩日期2009-07-01
导师周小红
关键词熔合蒸发反应
学位名称博士
其他题名Study of high-spin states in 165Er
英文摘要利用能量为42MeV和45MeV的9Be束流轰击160Gd自支撑靶,通过160Gd(9Be,4n)165Er熔合蒸发反应研究了165Er核的高自旋态结构。基于实验测量结果,扩展了基于ν5/2−[523]和ν5/2+[642]准粒子组态的转动带,观测到了连接这两条具有不同宇称的转动带的强电偶极跃迁。利用跃迁分支比,提取了带间电偶极跃迁的约化跃迁概率,并讨论了强电偶极跃迁与八极关联之间的关系。提取了ν5/2−[523]和ν5/2+[642]转动带的顺排角动量和能级能量旋称劈裂值,并进行了简单讨论。 High-spin states of 165Er have been studied using the 160Gd(9Be, 4n)reaction at beam energies of 42 and 45 MeV. The previously known bands based on the ν5/2−[523] and ν5/2+[642] configurations have been extended to high-spin states, and electric-dipole transitions linking these two opposite parity bands were observed. Relatively large B(E1) values have been extracted experimentally from the branching ratios, and were attributed to octupole softness. Alignment and signature splitting in energies in the ν5/2−[523] and ν5/2+[642] bands have been extracted and discussed briefly. 熔合蒸发反应;高自旋态;电偶极跃迁;八极关联
学科主题粒子物理与原子核物理
语种中文
公开日期2010-01-07
页码58
分类号O572.2;O57
源URL[http://ir.imp.cas.cn/handle/113462/349]  
专题近代物理研究所_近代物理研究所知识存储(2010之前)
推荐引用方式
GB/T 7714
王世陶. 165Er的高自旋态研究[D]. 2009.

入库方式: OAI收割

来源:近代物理研究所

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