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Non-destructive determination of spontaneously fissioning nuclides by neutron coincidence counting using multichannel time spectroscopy

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Abstract

A non-destructive method for determining the amount of actinoids has been developed. The method is based on thermal neutron coincidence counting and employs a selective detection of neutrons resulting from the spontaneous fission of actinoids. The detection system is described in detail and the measurement results of244Cm as an example are presented. The results show that the measured fission rate of244Cm is consistent with the fission rate calculated from ENDF/B-V data and that the amount of244Cm can be determined within about 5% accuracy even in the presence of a large amount of actinoids, for example, up to 2.6·106, 3.6·104, or 1.6·103 times in the mass ratio of239Pu,241Am, or240Pu to244Cm, respectively.

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Authors and Affiliations

  1. Department of Chemistry, Japan Atomic Energy Research Institute, Tokai-mura, 319-11, Ibaraki, (Japan)

    T. Kimura, Y. Kobayashi & J. Akatsu

  2. Department of Reactor Engineering, Japan Atomic Energy Research Institute, Tokai-mura, 319-11, Ibaraki, (Japan)

    H. Gotoh

Authors
  1. T. Kimura
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  2. H. Gotoh
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  3. Y. Kobayashi
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  4. J. Akatsu
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Kimura, T., Gotoh, H., Kobayashi, Y. et al. Non-destructive determination of spontaneously fissioning nuclides by neutron coincidence counting using multichannel time spectroscopy. Journal of Radioanalytical and Nuclear Chemistry, Articles 125, 29–40 (1988). https://doi.org/10.1007/BF02041746

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  • DOI: https://doi.org/10.1007/BF02041746

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