학술논문
Improved methods to age-date uranium certified reference materials for nuclear forensics using the 231 Pa/235 U radiochronometer.
Document Type
Article
Author
Source
Subject
*RADIOACTIVE substances
*REFERENCE sources
*URANIUM
*FORENSIC sciences
*QUALITY control
*GOVERNMENT laboratories
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*
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Language
ISSN
0236-5731
Abstract
Improved methods employed at Los Alamos National Laboratory for 231Pa/235U radiochronometry are outlined. We present elution curves obtained during 233Pa tracer preparation from 237Np. Additionally, we report model ages for uranium certified reference materials (CRMs) exhibiting a range of 235U enrichments including the first 231Pa/235U model ages for CRMs U200 and U900. Our results enable these CRMs to be used, with increased confidence, as quality control materials during nuclear forensics investigations. [ABSTRACT FROM AUTHOR]