Alpha spectrometry and liquid scintillation counting for the measurement of 238Pu, 239Pu, 240Pu, 241Pu, 242Pu and age.

Alpha spectrometry and liquid scintillation counting for the measurement of 238Pu, 239Pu, 240Pu, 241Pu, 242Pu and age.
Appl Radiat Isot. 2020 Oct;164:109293
Authors: Ramebäck H, Tovedal A, Lagerkvist P, Jonsson S, Vesterlund A
Abstract
A method for the measurement of the isotopic composition and time since last chemical separation (age) of plutonium is presented. The method includes alpha spectrometric measurement of 238Pu, 239Pu and 240Pu where the ratio of 239Pu and 240Pu was determined using spectral deconvolution, and liquid scintillation counting of 241Pu, after chemical separation of plutonium and americium. For the age determination, the 241Pu determined using liquid scintillation counting was combined with alpha spectrometric measurement of 241Am. The results of the isotopic composition were compared with certified reference materials with known isotopic composition, and the results of the age determination were compared with literature values of the separation dates.
PMID: 32819510 [PubMed]

Source: Applied Radiation and Isotopes - August 22, 2020 Category: Radiology Authors: Ramebäck H, Tovedal A, Lagerkvist P, Jonsson S, Vesterlund A Tags: Appl Radiat Isot Source Type: research