Nuclear Weak Processes and Astrophysical Applications

Toshio Suzuki, Michio Honma
2012 Journal of Physics, Conference Series  
Nuclear weak processes are investigated based on new shell model Hamiltonians, which give successful description of spin responses in nuclei, and applied to astrophysical problems. Neutrino-induced reactions on 12 C and synthesis of light elements by supernova neutrinos, and effects of contamination of 13 C, whose natural isotopic abundance is 1.1%, on inclusive ν-12 C reactions are discussed. Spin-dipole transitions and ν-induced reactions on 16 O are studied by using a new Hamiltonian with
more » ... Hamiltonian with proper tensor components, and compared with conventional calculations and previous CRPA results. Gamow-Teller transition strength in 40 Ar and ν-induced reactions on 40 Ar by solar neutrinos are studied based on monopolebased-universal interaction (VMU). We finally discuss electron capture reactions on Ni isotopes in stellar environments. Neutrino-Nucleus Reactions in Carbon and Oxygen Neutrino-induced Reaction on 12 C and Light Element Synthesis Neutrino-induced reactions in p-shell nuclei are investigated based on new shell model Hamiltonians[1], which take into account important roles of tensor interaction properly[9] and give good account of spin-dependent modes in p-shell nuclei. Magnetic moments of p-shell nuclei are systematically well described, and Gamow-Teller (GT) transition strengths in 12 C and 14 C are also well explained [1] . The GT strength in 12 C is enhanced for the new Hamiltonian, SFO[1], compared to conventional Hamiltonians, and the cross sections of ν-induced exclusive charge-exchamge
doi:10.1088/1742-6596/381/1/012118 fatcat:6tqjw5d7nrg4hkd37eapvgnl3e