| Doublet bands in 128La and systematic features of energy separationof doublet bands observed in the A～130 mass region |
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| 作者姓名： | 马克岩 陆景彬 杨东 王辉东 刘运祚 李剑 刘弓冶 李黎 马英君 吴晓光 李广生 郑云 贺创业 |
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| 作者单位： | 1 College of Physics, Jilin University, Changchun 130023, China;;2 China Institute of Atomic Energy, Beijing 102413, China |
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| 基金项目： | Supported by National Basic Research Programme of China (2007CB815005);National Natural Science Foundation of China(11075064);Specialized Research Fund for the Doctoral Programme of Higher Education of China (20050183008) |
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| 摘 要： | High spin states of 128La have been studied through the fusion-evaporation reaction 118Sn(14N,4n) 128La at a beam energy of 69 MeV. A positive-parity side band with the same configuration as that of the yrast band has been identified. Moreover, it is noted that the energy separation △E(I) = E(I)side-E(I)yrast of all doublet bands reported in odd-odd nuclei in the A～130 mass region exhibit a staggering pattern systematically, and they stagger up at even-spin and stagger down at odd-spin.
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| 关 键 词： | high spin state fusion-evaporation reaction doublet band |
| 收稿时间： | 2012-05-21 |
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