Current status of the recommended half-lives for the radionuclides used as the standards of photon emitters

Nikolay K Kuzmenko

doi:10.1016/j.apradiso.2021.110039

Current status of the recommended half-lives for the radionuclides used as the standards of photon emitters

Appl Radiat Isot. 2022 Feb:180:110039. doi: 10.1016/j.apradiso.2021.110039. Epub 2021 Nov 24.

Author

Nikolay K Kuzmenko¹

Affiliation

¹ V.G. Khlopin Radium Institute, 28 Second Murinsky Ave., St. Petersburg, 194021, Russia. Electronic address: kuzmenko@nk9433.spb.edu.

PMID: 34861620
DOI: 10.1016/j.apradiso.2021.110039

Abstract

This paper presents an update of the recommended half-lives published in X- and gamma-ray standards for detector calibration (IAEA, 1991 and 2007) performed as part of the Coordinated Research Project under the auspices of the IAEA. The half-lives of 61 radionuclides were updated during the years 2018-2020 using a well-established methodology to select the dataset. The recommended half-lives were obtained using weighted or unweighted sample means and the consistency of the results was investigated and discussed based on the chi-square test.

Keywords: Chi-square test; Evaluation; Half-life; Weighted and unweighted sample means.