| 70As(β++EC)衰变到70Ge的低自旋激发态(英文) |
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| 引用本文： | 沈水法,李燕,沈洁洁,石双惠,余笑寒,刘静怡,曾寄萍,阎玉鹏.70As(β++EC)衰变到70Ge的低自旋激发态(英文)[J].原子核物理评论,2017,34(3):459-464. |
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| 作者姓名： | 沈水法 李燕 沈洁洁 石双惠 余笑寒 刘静怡 曾寄萍 阎玉鹏 |
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| 作者单位： | 1.中国科学院核能安全技术研究所, 中子输运理论与辐射安全重点实验室, 合肥 230031; |
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| 基金项目： | 国家自然科学基金资助项目（11065001） |
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| 摘 要： | 通过70As的放射性衰变研究了70Ge的激发态，新发现能量为1 036.99，1 196.66，1 539.29和2 531.7 keV的四条新γ射线，重新确认了2 219.34 keV γ射线的跃迁位置，新确认496.74，1 295.24和1 417.24 keV这三条γ射线首次放入衰变纲图，本工作证实了1 881.67，2 325.42和2 424.41 keV γ射线的跃迁位置，建议了能量为4 243.10和5 265.81 keV的两个新能级，建立了新的衰变纲图，基于比较半衰期和γ跃迁分支比建议了一些能级的自旋-宇称。The excited states of the 70Ge nucleus are investigated in radioactive decay of the 70As. Four new transitions with 1 036.99, 1 196.66, 1 539.29 and 2 531.7 keV are found for the first time. The position of 2 219.34 keV transition are reassigned, the transition positions of 496.74, 1 295.24 and 1 417.24 keV γ-rays are assigned for the first time, and the placements of 1 881.67, 2 325.42 and 2 424.41 keV γ-rays are confirmed in the present work. Two new levels, at 4 243.10 and 5 265.81 keV excitation energy, respectively, are proposed. The decay scheme is established and for a number of levels spin-parity assignments are suggested on the basis of logft values and γ-branching ratios.
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| 关 键 词： | 衰变 γ 射线 能级 符合 |
| 收稿时间： | 2016-12-14 |
Low-spin States of 70Ge Excited in the 70As(β++EC)70Ge Decay |
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| SHEN Shuifa,LI Yan,JIEJIE Shen,SHI Shuanghui,YU Xiaohan,LIU Jingyi,ZENG Jiping,YAN Yupeng.Low-spin States of 70Ge Excited in the 70As(β++EC)70Ge Decay[J].Nuclear Physics Review,2017,34(3):459-464. |
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| Authors: | SHEN Shuifa LI Yan JIEJIE Shen SHI Shuanghui YU Xiaohan LIU Jingyi ZENG Jiping YAN Yupeng |
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| Institution: | 1.Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031, China;2.School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;3.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;4.Institute of Pharmaceutical Biotechnology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | The excited states of the 70Ge nucleus are investigated in radioactive decay of the 70As. Four new transitions with 1 036.99, 1 196.66, 1 539.29 and 2 531.7 keV are found for the first time. The position of 2 219.34 keV transition are reassigned, the transition positions of 496.74, 1 295.24 and 1 417.24 keV γ-rays are assigned for the first time, and the placements of 1 881.67, 2 325.42 and 2 424.41 keV γ-rays are confirmed in the present work. Two new levels, at 4 243.10 and 5 265.81 keV excitation energy, respectively, are proposed. The decay scheme is established and for a number of levels spin-parity assignments are suggested on the basis of logft values and γ-branching ratios. |
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| Keywords: | decay gamma ray level coincidence |
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