International cooperation in age-dating uranium standards for nuclear forensics using the 231Pa/235U radiochronometer

Denton, Joanna S.; Treinen, Kerri C.; Chen, Yan; Baransky, Eva; Gaffney, Amy M.; Huang, Sheng-Hui; Kayzar-Boggs, Theresa M.; Samperton, Kyle; Steiner, Robert E.; Wende, Allison M.; Williams, Ross W.; Zhao, Yong-Gang

doi:10.1007/s10967-020-07084-x

Title: International cooperation in age-dating uranium standards for nuclear forensics using the ²³¹Pa/²³⁵U radiochronometer

Journal Article · Wed Mar 04 00:00:00 EST 2020 · Journal of Radioanalytical and Nuclear Chemistry

DOI:https://doi.org/10.1007/s10967-020-07084-x· OSTI ID:1673840

Denton, Joanna S. ^[1]; Treinen, Kerri C. ^[2]; Chen, Yan ^[3]; Baransky, Eva ^[2]; Gaffney, Amy M. ^[2]; Huang, Sheng-Hui ^[3]; Kayzar-Boggs, Theresa M. ^[1]; Samperton, Kyle ^[2]; Steiner, Robert E. ^[1]; Wende, Allison M. ^[1]; Williams, Ross W. ^[2]; Zhao, Yong-Gang ^[3]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
China Inst. of Atomic Energy (CIAE), Beijing (China). Dept. of Radiochemistry

During 2017–2018 Los Alamos National Laboratory, Lawrence Livermore National Laboratory and the China Institute of Atomic Energy collaborated in an interlaboratory ²³¹Pa/²³⁵U radiochronometry exercise. The laboratories used different analytical methods to obtain a consensus model purification date for CRM U010 of December 28, 1958 ± 198 days and for CRM U850 of May 20, 1958 ± 363 days. These results agree with previously reported model dates using the ²³⁰Th/²³⁴U radiochronometer as well as the production histories of these materials. The concordance of interlaboratory data here confirms the ability of laboratories to make reproducible radiochronometry measurements using distinct analytical approaches.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344; 89233218CNA000001

OSTI ID:: 1673840

Report Number(s):: LLNL-JRNL-811968; 1012786; TRN: US2203970

Journal Information:: Journal of Radioanalytical and Nuclear Chemistry, Vol. 324, Issue 2; ISSN 0236-5731

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Title: International cooperation in age-dating uranium standards for nuclear forensics using the 231Pa/235U radiochronometer

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Title: International cooperation in age-dating uranium standards for nuclear forensics using the ²³¹Pa/²³⁵U radiochronometer