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Standardization of 241Am by digital coincidence counting, liquid scintillation counting and defined solid angle counting
- Source :
-
Applied Radiation & Isotopes . Jul2010, Vol. 68 Issue 7/8, p1358-1361. 4p. - Publication Year :
- 2010
-
Abstract
- Abstract: The nuclide 241Am decays by alpha emission to 237Np. Most of the decays (84.6%) populate the excited level of 237Np with energy of 59.54keV. Digital coincidence counting was applied to standardize a solution of 241Am by alpha–gamma coincidence counting with efficiency extrapolation. Electronic discrimination was implemented with a pressurized proportional counter and the results were compared with two other independent techniques: Liquid scintillation counting using the logical sum of double coincidences in a TDCR array and defined solid angle counting taking into account activity inhomogeneity in the active deposit. The results show consistency between the three methods within a limit of a 0.3%. An ampoule of this solution will be sent to the International Reference System (SIR) during 2009. Uncertainties were analysed and compared in detail for the three applied methods. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09698043
- Volume :
- 68
- Issue :
- 7/8
- Database :
- Academic Search Index
- Journal :
- Applied Radiation & Isotopes
- Publication Type :
- Academic Journal
- Accession number :
- 51131077
- Full Text :
- https://doi.org/10.1016/j.apradiso.2009.12.010