Spin Responses in Nuclei, Neutrino-Induced Reactions and Nucleosynthesis in Stars

Journal Article · Wed May 12 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3442617· OSTI ID:21362037

Suzuki, Toshio ^[1]

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1. Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)

New evaluations of neutrino-nucleus reaction rates are made for f p-shell and light p-shell nuclei as well as {sup 4}He based on new shell model Hamiltonians, which give good account of spin dependent properties such as Gamow-Teller (GT) transitions and magnetic moments in the nuclei. The reaction cross sections in light nuclei are found to be enhanced compared with those obtained by conventional Hamiltonians and previous calculations. The production yields of {sup 7}Li and {sup 11}B during supernova explosions are found to be enhanced. The GT strengths in Fe and Ni isotopes are found to be more fragmented than those by conventional Hamiltonians. In particular, this results in an enhancement of the neutrino-induced cross section on {sup 56}Ni for proton emission channel, and also an enhanced production yield of {sup 55}Mn in population III stars. Electron capture rates on Fe and Ni isotopes in astrophysical environment are studied, and they are found to be reduced systematically compared with those by conventional Hamiltonians.

• OSTI ID: 21362037
• Journal Information: AIP Conference Proceedings, Vol. 1235, Issue 1; Conference: 7. Japan-China joint nuclear physics symposium, Tsukuba (Japan), 9-13 Nov 2009; Other Information: DOI: 10.1063/1.3442617; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BORON 11
CHARGE EXCHANGE
CROSS SECTIONS
ELECTRON CAPTURE
GAMOW-TELLER RULES
HAMILTONIANS
HELIUM 4
LITHIUM 7
MANGANESE 55
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NICKEL 56
NUCLEAR EXPLOSIONS
NUCLEAR MAGNETIC MOMENTS
NUCLEOSYNTHESIS
PROTONS
SHELL MODELS
SPIN
STARS
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORON ISOTOPES
CAPTURE
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EXPLOSIONS
FERMIONS
HADRONS
HELIUM ISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
LIGHT NUCLEI
LITHIUM ISOTOPES
MAGNETIC MOMENTS
MANGANESE ISOTOPES
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NICKEL ISOTOPES
NUCLEAR MODELS
NUCLEAR PROPERTIES
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHYSICS
QUANTUM OPERATORS
RADIOISOTOPES
STABLE ISOTOPES
SYNTHESIS