Measurement of γ-Rays Generated by Neutron Interaction with 16O at 30 MeV and 250 MeV

Abstract Deep understanding of $\gamma$-ray production from the fast neutron reaction in water is crucial for various physics studies at large-scale water Cherenkov detectors. We performed test experiments using quasi-mono energetic neutron beams ($E_n = 30$ and 250 MeV) at Osaka University’s Research Center for Nuclear Physics to measure $\gamma$-rays originating from the neutron–oxygen reaction with a high-purity germanium detector. Multiple $\gamma$-ray peaks which are expected to be from excited nuclei after the neutron–oxygen reaction were successfully observed. We measured the neutron beam flux using an organic liquid scintillator for the cross section measurement. With a spectral fitting analysis based on the tailored $\gamma$-ray signal and background templates, we measured cross sections for each observed $\gamma$-ray component. The results will be useful to validate neutron models employed in ongoing and future water Cherenkov experiments.

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Publication Details

Journal
Progress of Theoretical and Experimental Physics
Published
2024-10-26
DOI
https://doi.org/10.1093/ptep/ptae159
Citations
3
Primary Topic
Nuclear Physics and Applications
Type
article
Field-Weighted Citation Impact
1.82
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article

Measurement of γ-Rays Generated by Neutron Interaction with 16O at 30 MeV and 250 MeV

Y. Hino, Tatsushi Shima, T. Nakaya, Y. Koshio et al.
3 citations
Progress of Theoretical and Experimental Physics
Nuclear Physics and Applications
1.82
article

Measurement of γ-Rays Generated by Neutron Interaction with 16O at 30 MeV and 250 MeV

Y. Hino, Tatsushi Shima, T. Nakaya, Y. Koshio, F. Iacob, Yosuke Ashida, M Mori, Agnès Maurel, A. Konaka, R. A. Wendell, G. Collazuol, T. Tano, Takeshi Horai
article en
3 citations

Abstract

Abstract Deep understanding of $\gamma$-ray production from the fast neutron reaction in water is crucial for various physics studies at large-scale water Cherenkov detectors. We performed test experiments using quasi-mono energetic neutron beams ($E_n = 30$ and 250 MeV) at Osaka University’s Research Center for Nuclear Physics to measure $\gamma$-rays originating from the neutron–oxygen reaction with a high-purity germanium detector. Multiple $\gamma$-ray peaks which are expected to be from excited nuclei after the neutron–oxygen reaction were successfully observed. We measured the neutron beam flux using an organic liquid scintillator for the cross section measurement. With a spectral fitting analysis based on the tailored $\gamma$-ray signal and background templates, we measured cross sections for each observed $\gamma$-ray component. The results will be useful to validate neutron models employed in ongoing and future water Cherenkov experiments.

Progress of Theoretical and Experimental PhysicsVol. 2024(11)
TRIUMF (CA), Okayama University of Science (JP), University of Padua (IT), École Polytechnique (FR), Okayama University (JP), Kyoto University (JP), University of Utah (US), Osaka International Cancer Institute (JP), Laboratoire Leprince-Ringuet (FR), Osservatorio Astronomico di Padova (IT), National Astronomical Observatory of Japan (JP)
Openalex Percentile: Top 15%
Nuclear Physics and Applications
1.82
DOIOpen Access PDFOpenAlex
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