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Douysset G, Petit GL, Gross P, et al. Long-term performances of the ⁹⁵ZR/⁹⁵Nb chronometer for nuclear events dating. Appl Radiat Isot. 2013;87:152-6doi: 10.1016/j.apradiso.2013.11.079.
Douysset, G., Petit, G. L., Gross, P., & Jutier, C. (2014). Long-term performances of the ⁹⁵ZR/⁹⁵Nb chronometer for nuclear events dating. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 87152-6. https://doi.org/10.1016/j.apradiso.2013.11.079
Douysset, G, et al. "Long-term performances of the ⁹⁵ZR/⁹⁵Nb chronometer for nuclear events dating." Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine vol. 87 (2014): 152-6. doi: https://doi.org/10.1016/j.apradiso.2013.11.079
Douysset G, Petit GL, Gross P, Jutier C. Long-term performances of the ⁹⁵ZR/⁹⁵Nb chronometer for nuclear events dating. Appl Radiat Isot. 2014 May;87:152-6. doi: 10.1016/j.apradiso.2013.11.079. Epub 2013 Nov 28. PMID: 24326315.
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Appl Radiat Isot. 2014 May;87:152-6. doi: 10.1016/j.apradiso.2013.11.079. Epub 2013 Nov 28.

Long-term performances of the ⁹⁵ZR/⁹⁵Nb chronometer for nuclear events dating.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

G Douysset, G Le Petit, P Gross, C Jutier

Affiliations

  1. CEA, DAM, DIF, F-91297 Arpajon, France. Electronic address: [email protected].
  2. CEA, DAM, DIF, F-91297 Arpajon, France.

PMID: 24326315 DOI: 10.1016/j.apradiso.2013.11.079

Abstract

The present work reports on a long-term analysis of the performances of the (95)Zr/(95)Nb chronometer for dating a nuclear event. Taking benefit of a recent Profiency Test Exercise, a sample containing a standardized mixture of fission products has been measured repeatedly with a low background HPGe spectrometer during a period extending up to one year with the aim of assessing the accuracy of the various zero-time determinations. Evaluation of the uncertainties associated to these evaluations was performed using a Monte Carlo approach. Input parameters sensitivity has been investigated, especially the influence of the (95m)Nb decay branch. The (95)Zr/(95)Nb chronometer was found to be accurate for zero-time determination within one day and one week for a decay of 3 months and 10 months respectively. Sub-day uncertainties are achievable for a two months old sample whereas sub-week uncertainties are reached after a decay of six months. Limitations of the technique for dating a real event are investigated.

© 2013 Published by Elsevier Ltd.

Keywords: (95)Zr/(95)Nb chronometer; Bateman's equations; CTBO; GUM Supplement 1; Monte Carlo estimation of uncertainties; Nuclear test dating

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