| 192Tl高自旋态能级结构研究 |
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| 作者姓名： | 贺创业 郑云 李聪博 吴晓光 李广生 钟健 陈启明 朱保吉 邓立涛 周文奎 樊启文 |
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| 作者单位： | 中国原子能科学研究院, 北京 102413 |
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| 基金项目： | 国家自然科学基金资助项目（11175259,11375267,11305269,11405274） |
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| 摘 要： | 通过熔合蒸发反应181Ta（16O,5n）192Tl,在入射束流为97 MeV能量下,布居192Tl的高自旋态,更新了192Tl的能级纲图。共增加8条新能级,尝试性地指定了能级自旋,将负宇称晕带的能级推高到23-?。讨论了192Tl与相邻同位素奇奇核194,196,198Tl负宇称晕带的旋称劈裂与反转现象,发现随着中子数增加,196,198Tl在高自旋处出现了旋称反转,其原因可能是由于中子质子相互作用与科里奥利力相互竞争所致。High spin states of 192Tl were populated by the 181Ta(16O, 5n)192Tl heavy ion fusion evaporation reaction at 97 MeV beam energy. A new level scheme with 8 new levels was constructed and the level spins were tentatively assigned. The negative yrast band was extended up to 23-?. Systematics of signature of inversion were also discussed for the negative yrast band of odd-odd Tl istopes. Signature inversion has been found in 196,198Tl with neutron number increasing in these four Tl isotopes, and it is explained by the competition between the strength of n-p interaction and Coriolis force.
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| 关 键 词： | 熔合蒸发反应 能级纲图 回弯 旋称反转 |
| 收稿时间： | 2016-11-25 |
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