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Round-robin 230Th–234U age dating of bulk uranium for nuclear forensics

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Abstract

In an inter-laboratory measurement comparison study, four laboratories determined 230Th–234U model ages of uranium certified reference material NBL U050 using isotope dilution mass spectrometry. The model dates determined by the participating laboratories range from 9 March 1956 to 19 October 1957, and are indistinguishable given the associated measurement uncertainties. These model ages are concordant with to slightly older than the known production age of NBL U050.

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Acknowledgments

The US laboratories’ participation in this measurement exchange was supported and facilitated by Heather Dion and the US National Nuclear Security Administration. Lawrence Livermore National Laboratory is operated by Lawrence Livermore National Security, LLC, for the U.S. Department of Energy, National Nuclear Security Administration under Contract DE-AC52-07NA27344. LLNL-JRNL-668387. LA-UR-15-22623.

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Authors and Affiliations

  1. Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, 7000 East Avenue, L-231, Livermore, CA, 94550, USA

    Amy M. Gaffney, Kerri C. Schorzman & Ross W. Williams

  2. CEA, DAM, DIF, 91297, Arpajon, France

    Amélie Hubert & Fabien Pointurier

  3. Nuclear and Radiochemistry, Los Alamos National Laboratory, P.O. Box 1663, MS-J514, Los Alamos, NM, 87545, USA

    William S. Kinman & Robert E. Steiner

  4. Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki, 3191195, Japan

    Masaaki Magara & Ayako Okubo

Authors
  1. Amy M. Gaffney
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  2. Amélie Hubert
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  3. William S. Kinman
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  4. Masaaki Magara
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  5. Ayako Okubo
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  6. Fabien Pointurier
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  7. Kerri C. Schorzman
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  8. Robert E. Steiner
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  9. Ross W. Williams
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Corresponding author

Correspondence to Amy M. Gaffney.

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Gaffney, A.M., Hubert, A., Kinman, W.S. et al. Round-robin 230Th–234U age dating of bulk uranium for nuclear forensics. J Radioanal Nucl Chem 307, 2055–2060 (2016). https://doi.org/10.1007/s10967-015-4334-8

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  • DOI: https://doi.org/10.1007/s10967-015-4334-8

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