| 139Ce的多准粒子激发态 |
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| 引用本文： | 滑伟,周小红,张玉虎,郭应祥,雷相国,谢成营,宋立涛,王华磊.139Ce的多准粒子激发态[J].中国物理 C,2007,31(4):357-360. |
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| 作者姓名： | 滑伟 周小红 张玉虎 郭应祥 雷相国 谢成营 宋立涛 王华磊 |
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| 作者单位： | [1]中国科学院近代物理研究所,兰州730000 [2]中国科学院研究生院,北京100049 |
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| 基金项目： | 国家自然科学基金
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中国科学院基金
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中国科学院"百人计划" |
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| 摘 要： | 利用能量为50MeV的12C束流, 通过反应130Te(12C,3n)布居了139Ce的高自旋态. 基于标准在束核谱学实验测量结果, 扩展并更新了139Ce的能级纲图. 139Ce的能级结构具有球形原子核的典型特征, 其高自旋态由单粒子激发形成. 利用经验壳模型计算了139Ce的多准粒子激发态能量, 研究了其高自旋激发态的多准粒子特性.
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| 关 键 词： | 高自旋态 能级纲图 多准粒子态 |
| 收稿时间： | 2006-6-1 |
| 修稿时间： | 2006-06-01 |
Study of Multi-Quasiparticle Excited States in 139Ce |
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| HUA Wei,ZHOU Xiao-Hong,ZHANG Yu-Hu,GUO Ying-Xiang,LEI Xiang-Guo,XIE Cheng-Ying,SONG Li-Tao,WANG Hua-Lei.Study of Multi-Quasiparticle Excited States in 139Ce[J].High Energy Physics and Nuclear Physics,2007,31(4):357-360. |
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| Authors: | HUA Wei ZHOU Xiao-Hong ZHANG Yu-Hu GUO Ying-Xiang LEI Xiang-Guo XIE Cheng-Ying SONG Li-Tao WANG Hua-Lei |
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| Institution: | 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | High-spin states in 139Ce have been populated using the 130Te(12C,3n) reaction at beam energy of 50MeV. The level scheme of 139Ce has been revised and extended greatly up to E=5765.0keV. The level structure of 139Ce shows typical characteristics of spherical nucleus, and the high-spin states were formed by the excitations of valence nucleons. Energies of the yrast and near yrast high-spin states in 139Ce have been calculated by the empirical shell model, and the multi-quasiparticle nature of high-spin excited states has been discussed. |
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| Keywords: | high spin states level schemes multi-quasiparticle state |
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