Reevaluation of the ¹⁴O(α,p)¹⁷F Resonant Reaction Rate

الأصل · EN

The reaction rates of the key stellar reaction of ¹⁴O(α,p)¹⁷F have been reevaluated. It is thought that the previous 1- assignment for the 6.15-MeV state is incorrect by a careful reanalysis of the previous experimental data [J. Gómez del Campo et al., Phys. Rev. Lett. 86, 43 (2001)]. Most probably, the 6.286-MeV state is the key 1- state and the 6.15-MeV state is a 2- one, and hence the resonance at Eₓ=6.286 MeV (Jπ=1-) actually dominates the reaction rates in the temperature region of astrophysical interests. The newly calculated reaction rates for the ¹⁴O(α,p)¹⁷F reaction are quite different from the previous ones, for instance, it's only about 1/6 of the previous value around 0.4 GK, while it's about 2.4 times larger than the previous value around 2 GK. The astrophysical implications have been briefly discussed based on the present conclusions.