First Accurate Normalization of the $\beta$-delayed $\alpha$ Decay of ${}^{16}$N and Implications for the ${}^{12}$C$(\alpha ,\gamma {)}^{16}$O Astrophysical Reaction Rate

O. S. Kirsebom, O. Tengblad, R. Lica +41

The ${}^{12}\text{C}(\alpha ,\gamma ){}^{16}\text{O}$ reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly cons…