Nuclear Reactions in Stars. IV. Buildup from Carbon

Reaction leading to the formation of C, O, and Ne at temperatures $T$ of about ${10}^8$ °K, in the core of red giant stars, had been studied previously. The nuclear reactions and resulting nucleo-genesis are now studied for a gas consisting of ${\mathrm{C}}^{12}$, ${\mathrm{O}}^{16}$, and ${\mathrm{Ne}}^{20}$ at 6×${10}^8$ to 10×${10}^8$ °K and densities around ${10}^4$ g/cc. The basic reaction rates are calculated and a set of simultaneous differential equations for various abundances as a function of time is solved numerically.