https://doi.org/10.1051/epjconf/202328408010
Gamma-Ray Spectrum Measurement from Capture Reactions of Uranium-238 for Thermal and Resonance Energy Neutrons
1 Central Research Institute of Electric Power Industry, Energy Transformation Research Laboratory, 2-6-1, Nagasaka, Yokosuka, Kanagawa 240-0196 Japan.
2 Kyoto University, Institute for Integrated Radiation and Nuclear Science, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494 Japan.
3 Kindai University, Atomic Energy Research Institute, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502 Japan.
* Corresponding author: nauchi@criepi.denken.or.jp
Published online: 26 May 2023
γ-ray spectrum from the capture reaction of 238U is measured for the thermal and resonance energy neutrons at KURNS-LINAC facility. Prominent primary γ ray of 3.297 MeV listed in CapGam is not observed for the thermal energy neutrons. The measured γ-ray spectrum is varied with neutron energy so that we can expect neutron spectrum inducing 238U(n,γ) reactions in critical / subcritical cores could be deduced by the γ-ray spectroscopy for the cores. Preliminary deduced ratio of 4.060 MeV γ-ray emission to capture for the thermal energy neutron agrees with CapGam so that the deduction scheme is considered adequate.
© The Authors, published by EDP Sciences, 2023
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