Level structure of 30 S and its importance in the 26 Si( α , p ) 29 P and 29 P( p , γ ) 30 S reaction rates

The level structure of ${}^{30}$S was studied via the ${}^{28}$Si(${}^{3}$He,n) and ${}^{32}$S(p,t) reactions at the Nuclear Science Laboratory of the University of Notre Dame and the Research Center for Nuclear Physics of the University of Osaka, Japan. Important experimental information on the energy levels, decay branching ratios, and tentative spin assignments is extracted to calculate the reaction rates for ${}^{29}$P(p,$\ensuremath{\gamma}$)${}^{30}$S and ${}^{26}$Si($\ensuremath{\alpha}$,p)${}^{29}$P, which play a critical role in the reaction flow in explosive hydrogen burning.