Measurement of gamma-ray production via neutron-16O reaction using a 77 MeV quasi-mono energetic neutron beam

Y. Ashida, H. Nagata, M. Mori, G. Collazuol, D. Fukuda, A. Konaka, Y. Koshio, T. Nakaya, C. Nantais, T. Shima, A. Suzuki, Y. Takeuchi, H. Tanaka, R. Wendell, T. Yano

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Abstract

Understanding of gamma-ray production via neutron interactions on oxygen is essential for the study of neutrino neutral-current elastic interactions in water Cherenkov detectors. A measurement of gamma-ray production from such reactions was performed using a 77 MeV quasi-mono energetic neutron beam. Several gamma-ray peaks, which are expected to come from neutron-16O reactions, are observed and cross sections are measured for three gamma-ray components, 6.13 MeV from 16O(3), 5.27 MeV from 15N (52+), and 4.44 MeV from 12C(2+). The results are σγ(6.13 MeV) = 4.2 ± 0.1(stat.) ± 0.9(syst.) mb, σγ(5.27 MeV) = 6.4 ± 0.1(stat.) ± 2.2(syst.) mb, and σγ(4.44 MeV) = 8.3 ± 0.1(stat.) ± 1.6(syst.) mb, respectively. These are the first measurement results at the corresponding neutron energy with use of a mono energy beam.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - Feb 24 2019

ASJC Scopus subject areas

  • General

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