| Search for Double γ-Vibrational Bands in Neutron-Rich 105Mo Nucleus |
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| 作者姓名： | 丁怀博 朱胜江 J. H. Hamilton A. V. Ramayya J. K. Hwang Y. X. Luo J. O. Rasmussen I. Y. Lee 车兴来 陈永静 李明亮 |
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| 作者单位： | [1]Department of Physics, Tsinghua University, Beijing 100084 [2]Department of Phvsics, Vanderbilt University, Nashville, Tennessee 37235, USA [3]Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10575057 and 10375032, the Special Program of Higher Education Science Foundation under Grant No 200003090, the U. S. Department of Energy under Grant Nos DE-FG05- 88ER40407 and DE-AC03-76SF00098. |
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| 摘 要： | Levels in the neutron-rich ^105Mo nucleus have been investigated by observing prompt γ-rays following the spontaneous fission fragments of^252 Cf with the Gammasphere detector array. The yrast band has been confirmed and updated. The other two collective bands with the band head levels at 870.5 and 1534.6 keV are newly observed, and they are suggested as the candidates for one-phonon K= 9/2 and two-phonon K = 13/2 double γ-vibrational bands, respectively. Systematic characteristics of these bands have been discussed.
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| 关 键 词： | 富中子^105Mo核 双γ-振动带 能级 γ-射线 晕转带 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2006-09-14 |
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