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1. 中国科学院上海原子核研究所
2. 中国科学院上海原子核研究所,上海,201800
纸质出版日期:1993-08-01
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[1]李燕,石双惠,黄文达,田家祺,顾嘉辉,刘静怡,施德堂,宋海军.~(147)Pm低激发能级研究[J].核技术,1993(08):469-474.
Li Yan Shi Shuanghui Huang Wenda Tian JiaqiGu Jiahui Liu Jingyi Shi Detang Song Haijun. Low-excited levels of 147Pm[J]. Nuclear techniques, 1993, (8): 469-474.
用高分辨率、高探测效率的Ge(Li)、HPGe及高探测效率的柱状、环状NaI(Tl)探测器测量了
147
Nd衰变的γ单谱及符合谱。为了避开本底干扰
对γ射线逐条进行了半衰期跟踪测量
结果给出了两条新能级和三条新γ射线
这是
147
Nd迄今为止最新的一组数据。依据最新的实验结果
对各能级的J
x
值及β
-
衰变分支比做了系统评价。
An investigation on the decay of 147Nd has been carried out by a HPGe γ ray spectrometer and a Ge(Li) and NaI(Tl) γ-γ coincidence spectrometer. New levels 730.7 keV and 859.2keV of 147Pm are found. Existence of the 641keV level and the 231keV γ transition in 147Pm is proved. No evidence can be found for the 807 keV level and the 716 keV γ ray. Energy spectra of 147Pm is studied by the angular momentum projection method and the calculated results are compared with experimental data.
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