Neutrino-induced reactions for nucleosynthesis by the Quasi-particle RPA

초록

We calculated neutrino-induced reactions in the energy range below the quasi-elastic region for nuclei of astrophysical importance. Neutrino-induced reactions have been found to be important for the nucleosynthesis in core collapsing supernovae explosions because expected neutrino flux is sufficiently high enough to excite many relevant nuclei in spite of small cross sections of the weak interaction. Our calculations are carried out with the Quasi-particle Random Phase Approximation (QRPA), which successfully described the nuclear beta decays of relevant nuclei by taking neutron-proton pairing as well as neutron-neutron and proton-proton pairing correlations into account. To describe neutrino-nucleus reactions, general multipole transitions by the weak interaction with finite momentum transfers are considered for neutral and charged current reactions. Both reactions are described in a theoretical framework. Our results are shown to well reproduce the sparse experimental data and extended further for neutrino reactions on various nuclear targets. Parts of the results are reported in this talk. © 2010 American Institute of Physics.