Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1016..337f&link_type=abstract
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: The 10th International Symposium on Origin of Matter and Evolution of Galaxies: From
Other
Beta Decay, Double Beta Decay, Electron And Muon Capture, Shell Model, Neutrino Mass And Mixing
Scientific paper
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 β 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 (3He,t) charge-exchange reactions at 0° 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 Tz = +/-1-->0 analogous GT transitions. Further β-decay studies for unstable pf-shell nuclei to obtain accurate half-lives and feeding ratios are in progress.
Fujita Yutaka
Gelletly W.
Rubio Berta
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