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Measurements of 232Th(n,2n) 231Th reaction cross-sections in the neutron energy of 12–18.5 MeV

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Abstract

At the 3MV tandem accelerator of Sichuan University, monoenergetic neutrons were generated through the T(d,n)4He reaction by bombarding a Tritium–Titanium (T–Ti) target with a 2 MeV deuterium beam. The neutron activation method and offline gamma-ray spectroscopy were utilized to measure the cross sections of the 232Th(n,2n)231Th reaction at neutron energies of 12.49 ± 0.33 MeV, 16.38 ± 0.60 MeV, and 18.10 ± 0.23 MeV. Factors such as neutron scattering, neutron flux fluctuation, cascade coincidence effects in gamma-ray measurements, and gamma-ray self-absorption were analytically corrected. The TALYS-1.9 program was used to calculate the reaction cross sections of 232Th(n,2n)231Th within the 6–20 MeV neutron energy range. The experimental data were compared and analyzed against existing experimental data, evaluated data from CENDL-3.2, ENDF/B-VIII, JENDL-5, ROSFONDR-2010 and theoretical values computed by TALYS-1.9.

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Data availability

The data that support the findings of this study are available on request from the corresponding author (Jun Zeng), upon reasonable request.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (grant No.12105265) and the Key Laboratory of Nuclear Data foundation (grant No.6142A08200104).

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Authors and Affiliations

  1. Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China

    Jiajun Zhu, Xiaobing Luo, Wenxuan Yan, Qian Ye & Dongmei Luo

  2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621999, China

    Jun Zeng

Authors
  1. Jiajun Zhu
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  2. Jun Zeng
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  3. Xiaobing Luo
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  4. Wenxuan Yan
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  5. Qian Ye
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Correspondence to Jun Zeng.

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Zhu, J., Zeng, J., Luo, X. et al. Measurements of 232Th(n,2n) 231Th reaction cross-sections in the neutron energy of 12–18.5 MeV. J Radioanal Nucl Chem (2024). https://doi.org/10.1007/s10967-024-09463-0

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