Xiaolong Huang, Baosong Wang
China Institute of Atomic Energy, China Nuclear Data Center, Beijing, China.
Appl Radiat Isot. 2009 Sep;67(9):1541-9. doi: 10.1016/j.apradiso.2009.02.092. Epub 2009 Mar 9.
Evaluation of the complete decay scheme and data for (235)U including new measurements are presented in this report; literature data available up to June 2008 are included. The half-life is determined to be (7.04+/-0.01) x 10(8) yr. All known measured gamma-ray absolute intensities have been examined; the gamma-ray emission probability of the reference gamma-ray line of 185.72 keV is recommended to be 57.0+/-0.3%. The calculated internal conversion coefficients and their uncertainties have been used to obtain the complete decay intensity balance. The other decay characteristics are calculated using the ENSDF analysis program. Finally the new decay scheme for (235)U is presented.
本报告介绍了对（235）U完整衰变纲图及数据的评估，包括新的测量结果；纳入了截至2008年6月的文献数据。确定半衰期为（7.04±0.01）×10⁸年。已对所有已知的测量伽马射线绝对强度进行了审查；建议185.72 keV参考伽马射线线的伽马射线发射概率为57.0±0.3%。利用计算出的内转换系数及其不确定度获得了完整的衰变强度平衡。使用ENSDF分析程序计算了其他衰变特性。最后给出了（235）U的新衰变纲图。
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