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Systematics and possible nonstatistical behaviour of (n,2n) cross sections

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Abstract

A systematical analysis of experimental (n, 2n) cross sections has been carried out by many authors for long time. However, a substantiated theoretical approach to explain the observed systematical regularity of the experimental (n, 2n) cross sections has not been available until now. In this work, in the framework of the statistical model, a general expression for (n, 2n) reaction cross sections is obtained using the compound mechanism and evaporation model. This expression is then used to deduce the nonstatistical share of the (n, 2n) cross section. It is shown for the first time that the nonstatistical theoretical formula adequately describes the experimental (n, 2n) cross section data for 14–15 MeV neutrons taken from the EXFOR library.

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Acknowledgements

This work was financially supported by the Mongolian Science and Technology Foundation. Contract No: ShUTBIKhKhZG-2022/160.

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Authors and Affiliations

  1. Nuclear Research Center, National University of Mongolia, Ulaanbaatar, 13330, Mongolia

    G. Khuukhenkhuu, Ch. Saikhanbayar, M. Odsuren & E. Sansarbayar

  2. School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, 170032, Mongolia

    M. Odsuren

  3. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia

    E. Sansarbayar & Yu. M. Gledenov

  4. State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China

    Guohui Zhang

Authors
  1. G. Khuukhenkhuu
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  2. Ch. Saikhanbayar
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  3. M. Odsuren
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  4. E. Sansarbayar
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  5. Yu. M. Gledenov
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  6. Guohui Zhang
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Correspondence to Ch. Saikhanbayar.

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Khuukhenkhuu, G., Saikhanbayar, C., Odsuren, M. et al. Systematics and possible nonstatistical behaviour of (n,2n) cross sections. Indian J Phys (2024). https://doi.org/10.1007/s12648-024-03123-5

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