Gamow-Teller strength for the analog transitions to the first T = 1/2, J**pi = 3/2- states in C-13 and N-13 and the implications for Type Ia supernovae
Oct, 2007
Citations per year
Abstract: (arXiv)
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-,neutrino)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.- 21.60.Cs
- 25.40.Kv
- 25.55.-e
- 24.50.+g
References(42)
Figures(0)