Gamow-Teller Transitions in Proton-Rich pf-shell Nuclei-relevance to supernovae explosions-

Journal Article · Wed May 21 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943595· OSTI ID:21143489

Fujita, Y ^[1]; Rubio, B ^[2]; Gelletly, W ^[3]

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1. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
2. IFIC, CSIC-University of Valencia, E-46071 Valencia (Spain)
3. Department of Physics, University of Surrey, Guildford GU2 7XH, Surrey (United Kingdom)

Gamow-Teller (GT) transitions starting from unstable pf-shell nuclei play important roles in neutrino-induced reactions that happen under the extremely high temperature conditions in core-collapse (type II) supernovae. In the {beta} decay, it is difficult to obtain GT strengths B(GT) to higher excited states, but accurate half-lives can be measured. On the other hand, high-resolution ({sup 3}He,t) charge-exchange reactions at 0 deg. and at 420 MeV yield cross-sections, that are proportional to B(GT) values, for individual transitions up to high excitation. Assuming isospin symmetry, we performed a unique analysis to determine absolute B(GT) values for the T{sub z} {+-}1{yields}0 analogous GT transitions. Further {beta}-decay studies for unstable pf-shell nuclei to obtain accurate half-lives and feeding ratios are in progress.

• OSTI ID: 21143489
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1016; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
CHARGE-EXCHANGE REACTIONS
CROSS SECTIONS
EXCITATION
EXCITED STATES
GAMOW-TELLER RULES
HALF-LIFE
HELIUM 3
HELIUM 3 REACTIONS
ISOSPIN
MEV RANGE
NEUTRINO REACTIONS
NUCLEAR REACTION YIELD
PROTONS
RESOLUTION
SHELL MODELS
SYMMETRY
TRITONS