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摘要
The emission probability of the 21.54 keV gamma ray in the decay of Sm-151 was experimentally determined by means of the measurements of the 21.54 keV gamma-ray emission rate and the activity of Sm-151 with high-resolution Ge, Si(Li) gamma-ray spectrometry and liquid scintillation counting (LSC), respectively. The resulting emission probability of the 21.54 keV gamma ray is 0.0324% with a standard uncertainty of 0.0013% based on a quadratic summation of the uncertainty components from the measurements of the gamma-ray emission rate and the activity of Sm-151. The result agrees with the latest literature value (partially theoretically based), 0.0318 +/- 0.0022%, with reduced uncertainty.
- 出版日期2011-11-9
- 单位广西大学; 中国原子能科学研究院; 广西师范大学
