Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1878666 | Applied Radiation and Isotopes | 2014 | 5 Pages |
Abstract
The standardization of 237Np was investigated. The certified massic activity for 237Np was obtained by 4Ïαβ liquid scintillation (LS) counting with correction for the 233Pa daughter using the CIEMAT/NIST efficiency tracing method using a 3H standard. Confirmatory measurements were also performed by high-resolution HPGe gamma-ray spectrometry, and by 4Ïαβ(LS)-γ(NaI) anticoincidence counting. All results agree within the respective method's uncertainties. It was confirmed that the 237Np/233Pa radioactive equilibrium is disturbed when making dilutions and/or removing aliquots.
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Authors
Lizbeth Laureano-Perez, R. Fitzgerald, R. Collé,