Neutrino process with primitive meteorites and high power laser

A huge number of neutrinos emitted in core-collapse supernova explosions (ν process) play an important role in stellar nucleosynthesis of some rare nuclides. The study of the neutrino process can contribute to estimation of neutrino energy spectra and explosion mechanism. In the mass region heavier than iron, only three nuclides are known as the neutrino isotopes. If we can find other candidates for neutrino production, it helps to constrain precisely the neutrino energy spectra emitted from proto-neutron stars. A key input for the calculation of the neutrino process is destruction rates by photodisintegration reactions on excited nuclei at high temperature environments. We have proposed direct measurements of photon-induced reaction cross sections on nuclei excited by high power laser to simulate stellar environments.