Determination of the emission probability of the 21.54 keV γ ray in the decay of 151Sm
Abstract
The emission probability of the 21.54 keV γ ray in the decay of 151Sm was experimentally determined by means of the measurements of the 21.54 keV γ-ray emission rate and the activity of 151Sm with high-resolution Ge, Si(Li) γ-ray spectrometry and liquid scintillation counting (LSC), respectively. The resulting emission probability of the 21.54 keV γ 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 γ-ray emission rate and the activity of 151Sm. The result agrees with the latest literature value (partially theoretically based), 0.0318 ± 0.0022%, with reduced uncertainty.
- Publication:
-
Physical Review C
- Pub Date:
- November 2011
- DOI:
- 10.1103/PhysRevC.84.054307
- Bibcode:
- 2011PhRvC..84e4307S
- Keywords:
-
- 23.20.Lv;
- 27.70.+q;
- gamma transitions and level energies;
- 150<
- =A<
- =189