| Reinvestigation of the high spin states in ^（161）Er and enhanced E1 transitions in the N=93 isotones |
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| 作者姓名： | 陈亮 周小红 张玉虎 柳敏良 王世陶 方永得 滑伟 强赟华 李广顺 周厚兵 丁兵 王海霞 郑勇 竺礼华 吴晓光 |
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| 作者单位： | 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;;3. China Institute of Atomic Energy, Beijing 102413, China |
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| 基金项目： | National Natural Science Foundation of China，National Basic Research Program of China，Chinese Academy of Sciences |
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| 摘 要： | High-spin states in 161Er have been studied experimentally using the 150Nd(16O, 5n) reaction at a beam energy of 86 MeV. The relatively enhanced E1 transitions between the 5/2+[642] and 3/2-[521] bands are observed in 161Er, and the B(E1) values are extracted experimentally. The systematics of the R(E1) values in the N=93 isotones are presented. It is found that the strength of the E1 transitions obviously exhibits angular momentum dependence, and the occurrence of the relatively enhanced E1 transitions could be attributed to octupole softness.
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| 关 键 词： | 高自旋态 中子 电子束能量 角动量 实验 跃迁 |
| 收稿时间： | 2010-09-26 |
| 修稿时间： | 2010-11-08 |
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