Abstract: (IOP)
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 -(12)C reactions are discussed. Spin-dipole transitions and -induced reactions on (16)O are studied by using a new Hamiltonian with proper tensor components, and compared with conventional calculations and previous CRPA results. Gamow-Teller transition strength in (40)Ar and -induced reactions on (40)Ar by solar neutrinos are studied based on monopole-based-universal interaction (VMU). We finally discuss electron capture reactions on Ni isotopes in stellar environments.
  • neutrino: supernova
  • electron: capture
  • neutrino: solar
  • weak interaction
  • nucleus
  • Hamiltonian
  • Gamow-Teller transition
  • shell model
  • spin