Study of γ-ray production in neutral-currentneutrino-oxygen interactions and the detectionof neutrinos from Supernova explosion

摘要

The γ-ray production in neutral-current (NC) neutrino-oxygen interaction is very important to the detection of neutrinos from supernova explosion in a neutrino experiment using water target like Super-K, since those γ-rays can become extra signals or unexpected background in the energy region from 5MeV to 30MeV. We discuss a possible experiment to measure γ-rays in ~(16)O(p,',) and ~(16) O(~3He,t) reactions at Research Center for Nuclear Physics (RCNP, Osaka). Such measurements should provide good information on the γ-ray emission spectra in neutrino-oxygen reactions.