Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials

The paper describes the age (production date) determination of uranium reference materials using the (231)Pa/(235)U ratio. Direct addition of (237)Np in secular equilibrium with its (233)Pa daughter was chosen instead of the regular milking of (237)Np to avoid possible loss of Pa. Sample preparation...

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Autores principales: Varga, Zsolt, Nicholl, Adrian, Hrnecek, Erich, Wallenius, Maria, Mayer, Klaus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6267122/
https://www.ncbi.nlm.nih.gov/pubmed/30546184
http://dx.doi.org/10.1007/s10967-018-6247-9
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author Varga, Zsolt
Nicholl, Adrian
Hrnecek, Erich
Wallenius, Maria
Mayer, Klaus
author_facet Varga, Zsolt
Nicholl, Adrian
Hrnecek, Erich
Wallenius, Maria
Mayer, Klaus
author_sort Varga, Zsolt
collection PubMed
description The paper describes the age (production date) determination of uranium reference materials using the (231)Pa/(235)U ratio. Direct addition of (237)Np in secular equilibrium with its (233)Pa daughter was chosen instead of the regular milking of (237)Np to avoid possible loss of Pa. Sample preparation consists of a fast, one-step procedure. The developed method using ICP-MS for the measurement of (231)Pa is more precise than alpha spectrometry and is applicable for freshly produced low-enriched uranium materials. The measured ages are in good agreement with the reported production dates, thus the (231)Pa/(235)U chronometer can be applied for validation of (230)Th/(234)U in nuclear forensics and safeguards. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s10967-018-6247-9) contains supplementary material, which is available to authorized users.
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spelling pubmed-62671222018-12-11 Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials Varga, Zsolt Nicholl, Adrian Hrnecek, Erich Wallenius, Maria Mayer, Klaus J Radioanal Nucl Chem Article The paper describes the age (production date) determination of uranium reference materials using the (231)Pa/(235)U ratio. Direct addition of (237)Np in secular equilibrium with its (233)Pa daughter was chosen instead of the regular milking of (237)Np to avoid possible loss of Pa. Sample preparation consists of a fast, one-step procedure. The developed method using ICP-MS for the measurement of (231)Pa is more precise than alpha spectrometry and is applicable for freshly produced low-enriched uranium materials. The measured ages are in good agreement with the reported production dates, thus the (231)Pa/(235)U chronometer can be applied for validation of (230)Th/(234)U in nuclear forensics and safeguards. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s10967-018-6247-9) contains supplementary material, which is available to authorized users. Springer International Publishing 2018-11-11 2018 /pmc/articles/PMC6267122/ /pubmed/30546184 http://dx.doi.org/10.1007/s10967-018-6247-9 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Varga, Zsolt
Nicholl, Adrian
Hrnecek, Erich
Wallenius, Maria
Mayer, Klaus
Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title_full Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title_fullStr Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title_full_unstemmed Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title_short Measurement of the (231)Pa/(235)U ratio for the age determination of uranium materials
title_sort measurement of the (231)pa/(235)u ratio for the age determination of uranium materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6267122/
https://www.ncbi.nlm.nih.gov/pubmed/30546184
http://dx.doi.org/10.1007/s10967-018-6247-9
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