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Age determination for uranium standard samples by 231Pa/235U radiochronometer

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Abstract

Developing different model age determination methods of uranium sample could get more information on insight into source and suspected use in nuclear forensic investigation. A procedure for the determination of model age of uranium sample using 231Pa/235U radiochronometer was reported. The 233Pa spike used in the procedure of 231Pa–235U model age determination was separated from in-house 237Np stock solution by using two TRU resin columns and three silica gel columns and calibrated by CRM U100. Model ages of CRM U010 and IRMM-1000b were presented. The model age of IRMM-1000b using 231Pa/235U radiochronometer were older than the literature reported results by 230Th/234U radiochronometer by amounts exceeded the expanded uncertainty.

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Authors and Affiliations

  1. Department of Radiochemistry, China Institute of Atomic Energy, P.O. Box 275-8, Xinzhen Fangshan District, Beijing, 102413, China

    Yan Chen, Sheng-Hui Huang, Rui-Xuan Hu, Yong-Gang Zhao, Li-Li Li & Jia-Jun Zhou

  2. State Nuclear Security Technology Center, Fusheng Street 67#, Fangshan District, Beijing, 102401, China

    Chun Li, Ji-Long Zhang & Zhao-Hui Wu

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  1. Yan Chen
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  2. Sheng-Hui Huang
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  3. Rui-Xuan Hu
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  9. Zhao-Hui Wu
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Correspondence to Yan Chen.

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Chen, Y., Huang, SH., Hu, RX. et al. Age determination for uranium standard samples by 231Pa/235U radiochronometer. J Radioanal Nucl Chem 322, 1605–1609 (2019). https://doi.org/10.1007/s10967-019-06922-x

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  • DOI: https://doi.org/10.1007/s10967-019-06922-x

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