10B+ reactions at low energies

Nucleosynthesis in primordial stellar environments may lead to a substantial production of 10B isotopes, which either are converted by the 10B(p, alpha) 7Be reaction to 7Be or processed further by 10B +alpha reactions towards the carbon, nitrogen, and oxygen range. This paper focuses on low energy studies of the 10B(alpha, p)13C and 10B(alpha, d)12C reactions to determine the low energy cross section and the reaction rates in stellar environments using R-matrix analysis techniques. The experimental results cover a broad energy range, from 0.21 MeV up to 1.4 MeV in the center of mass frame, extending down to the Gamow energy range. A substantial increase in the reaction rate compared to previous predictions is found, due to the identification of near threshold alpha-cluster resonance structures.