Gamow-Teller Transitions and β-decay Half-life in Proton Rich pf-shell Nuclei

Details Gamow-Teller Transitions and β-decay Half-life in Proton Rich pf-shell Nuclei Gamow-Teller Transitions and β-decay Half-life in Proton Rich pf-shell Nuclei

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1238..297f&link_type=abstract

TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS-VII. AIP Conference Proceedings, Volume 1238, pp. 297-300 (2010).

Physics

Nuclear Physics

Beta-Decay, Neutrino-Nucleus Reactions, Charge Exchange, Shell Model (Nuclear), Supernovae, Weak-Interaction And Lepton Aspects, Neutrino Scattering, Charge-Exchange Reactions, Shell Model, Nuclear Physics Aspects Of Novae, Supernovae, And Other Explosive Environments

Scientific paper

In violent neutrino-induced reactions at the core-collapse stage of type II supernovae, Gamow-Teller (GT) transitions starting from stable as well as unstable pf-shell nuclei play important roles. In the β-decay study of these unstable pf-shell nuclei, half-lives can be measured rather accurately. On the other hand, in high-resolution (3He,t) charge-exchange reactions at 0°, individual GT transitions up to high excitations can be studied. Assuming the isospin symmetry for the strengths of Tz = +/-2-->+/-1 analogous GT transitions, we present a ``merged analysis'' for the determination of GT transition strengths starting from proton-rich Tz = -2 nuclei. We applied this analysis to the A = 52, T = 2 system, and it was found that the GT transitions and the properties of the 52Ni β decay can be understood better by combining the mirror GT strength distribution obtained from the 52Cr(3He,t) reaction.

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