| High Spin Band Structure in ^112Ru |
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| 作者姓名： | 车兴来 朱胜江 J. H. Hamilton A. V. Ramayya J. K. Hwang J. O. Rasmussen Y. X. Luo 陈水静 李明亮 丁怀搏 禹英男 I. Y. Lee W. C. Ma |
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| 作者单位： | [1]Department of Physics, Tsinghua University, Beijing 100084 [2]Department of Physics, Vanderbilt University, Nashville, Tibnnessee 37235, USA [3]Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA [4]Department of Physics, Mississippi State University, Mississippi 39762, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10375032, the Major State Basic Research Development Programme of China under Grant No G2000077405, the Special Programme of Higher Education Science Foundation of China under Grant No 20030003090, and the U.S. Department of Energy （DE-FG05-88ER40407）. |
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| 摘 要： | Levels in the neutron-rich ^112Ru nucleus have been investigated by observing prompt gamma-rays from the spontaneous fission of ^252Cf with the Gammasphere detector array. The ground state band and the one-phonon γ-vibrational band have been confirmed and extended with spin up to 16h and 15h, respectively. The other two side bands, one proposed as two-phonon γ-vibrational band and the other proposed as two-quasiparticle band, have been observed for the first time. The total-Routhian-surface calculations show that rotational 112 Ru nucleus has triaxial deformation with parameters β2 - 0.27 and γ= -29°. The observed band crossing in the yrast band is due to the alignment of a pair of h11/2 neutrons according to the cranked shell model calculations. The possible configuration for the quasiparticle band has also been discussed.
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| 关 键 词： | 高自旋带结构 富余中子 核子 Gamma射线 自发裂变 准粒子带 |
| 收稿时间： | 2005-09-30 |
| 修稿时间： | 2005-09-30 |
High Spin Band Structure in ^112Ru |
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| CHE Xing-Lai, ZHU Sheng-jiang, CHEN Yong-Jing, LI Ming-Liang, DING Huai-Bo, U Yong-Nan.High Spin Band Structure in ^112Ru[J].Chinese Physics Letters,2006,23(2):328-331. |
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| Authors: | CHE Xing-Lai ZHU Sheng-jiang CHEN Yong-Jing LI Ming-Liang DING Huai-Bo U Yong-Nan |
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