Neutrino-Induced Reactions on Ni and Fe Isotopes and Nucleosynthesis in Stars

Details Neutrino-Induced Reactions on Ni and Fe Isotopes and Nucleosynthesis in Stars Neutrino-Induced Reactions on Ni and Fe Isotopes and Nucleosynthesis in Stars

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..haw.cg004s&link_type=abstract

American Physical Society, 3rd Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan, October 1

Physics

Nuclear Physics

Scientific paper

Neutrino-induced reactions on Ni and Fe isotopes are investigated based on new shell model Hamiltonians for fp-shell, GXPF1. Spin and magnetic properties of nuclei have been considerably improved by the Hamiltonians, where important roles of tensor interaction on shell evolutions are properly taken into account. Charge-exchange reactions on ^56Fe induced by DAR neutrinos is investigated by using Gamow-Teller strength obtained by the new Hamiltonian, GXPF1J. The observed cross section is shown to be consistent with the observation. The Gamow-Teller strength in ^56Ni is found to be more spread compared to previous calculations and result in a considerably large branching ratio for the proton knock-out channel. This leads to the enhancement of the production yields of heavy elements such as ^55Mn and ^59Co in population III stars for the new Hamiltonian [1]. The electron capture reactions on ^56Ni, neutrino-induced reactions on ^52Fe and the production of elements such as ^51V in supernovae will be also discussed. [4pt] [1] T. Suzuki et al., Phys. Rec. C79, 061603(R) (2009).

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