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Application of delayed neutron counting at CIAE

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Abstract

Delayed neutron counting (DNC) was applied in quantitative determination of 235U/238U, quantitative determination of 235U and 239Pu in 235U–239Pu co-existing samples at China Institute of Atomic Energy (CIAE). In this work, natural uranium, enriched uranium and their mixtures were used in the determinations of 235U/238U ratios. The results indicated that delayed neuron counting combined with neutron activation analysis(NAA) and k0-NAA for the measurement of gamma rays emitted by 239U decay is suitable for fast determination 235U/238U ratio. In addition, the contents of 235U and 239Pu in 235U–239Pu co-existing samples can also be determined respectively.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No.11175264, No. 11275276). We thank Professor Yongbao Zhang for assisting these experiments at MNSR reactor.

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Authors and Affiliations

  1. Department of Nuclear Physics, China Institute of Atomic Energy, P.O. Box 275-50, Beijing, China

    Caijin Xiao, Yonggang Yao, Xiangchun Jin, Long Hua, Pingsheng Wang & Bangfa Ni

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  1. Caijin Xiao
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  2. Yonggang Yao
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  3. Xiangchun Jin
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  4. Long Hua
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  5. Pingsheng Wang
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  6. Bangfa Ni
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Correspondence to Caijin Xiao.

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Xiao, C., Yao, Y., Jin, X. et al. Application of delayed neutron counting at CIAE. J Radioanal Nucl Chem 312, 711–715 (2017). https://doi.org/10.1007/s10967-017-5215-0

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  • DOI: https://doi.org/10.1007/s10967-017-5215-0

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