Radiochronometric analysis of an historic Cs-137 activity standard

A 137 Cs activity standard discovered during routine inventory was analyzed to determine its model age using radiochronometry. The aqueous activity standard was separated using an established separation method that employs commercially available Sr resin. The method was also tested against a nuclear...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2022-11, Vol.331 (11), p.4745-4751
Main Authors: McLain, Derek R., Brossard, Thomas W., Tsai, Yifen, Canaday, Jodi L.
Format: Article
Language:English
Subjects:
Accuracy
Cesium 133
Cesium 137
Cesium isotopes
Chemistry
Chemistry and Materials Science
Cs-137
Diagnostic Radiology
Ethylenediaminetetraacetic acid
Extraction chromatography
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear forensics
Nuclear Physics
Physical Chemistry
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Radiochronometry
Reference materials
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Summary:A 137 Cs activity standard discovered during routine inventory was analyzed to determine its model age using radiochronometry. The aqueous activity standard was separated using an established separation method that employs commercially available Sr resin. The method was also tested against a nuclear forensics reference material developed specifically for benchmarking 137 Cs radiochronometry methods. Results of the analyses showed good agreement between the results and the certified values of the reference material. Analysis of the discovered activity standard were also in good agreement with the activity certification date, though uncertainty was higher due to natural Ba contaminating the sample and the stable 133 Cs used as a carrier during the standard’s production.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-022-08554-0