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

Journal Article · Wed May 12 04:00:00 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1235; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

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