Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-10-16
Phys.Rev.C77:024307,2008
Physics
Nuclear Physics
Nuclear Experiment
11 pages, 4 figures
Scientific paper
10.1103/PhysRevC.77.024307
The Gamow-Teller strength for the transition from the ground state of 13C to the T=1/2, J^pi=3/2- excited state at 3.51 MeV in 13N is extracted via the 13C(3He,t) reaction at 420 MeV. In contrast to results from earlier (p,n) studies on 13C, a good agreement with shell-model calculations and the empirical unit cross section systematics from other nuclei is found. The results are used to study the analog 13N(e-,v_e)13C reaction, which plays a role in the pre-explosion convective phase of type Ia supernovae. Although the differences between the results from the (3He,t) and (p,n) data significantly affect the deduced electron-capture rate and the net heat-deposition in the star due to this transition, the overall effect on the pre-explosive evolution is small.
Akimune Hidetoshi
Austin Sam M.
Brown Alex B.
Brown Edward F.
Chamulak David A.
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