Spectroscopy of23Aland27Pusing the(7Li,8He)reaction and the implications for22Naand26Alnucleosynthesis in explosive hydrogen burning

The proton-rich nuclei ${}^{23}\mathrm{Al}$ and ${}^{27}\mathrm{P}$ were studied using the ${}^{24}\mathrm{Mg}{(}^{7}\mathrm{Li}{,}^{8}\mathrm{He}{)}^{23}\mathrm{Al}$ and ${}^{28}\mathrm{Si}{(}^{7}\mathrm{Li}{,}^{8}\mathrm{He}{)}^{27}\mathrm{P}$ reactions, respectively. Several energy levels are observed in each nucleus. The mass excess of ${}^{23}\mathrm{Al}$ was measured to be 6.773(28) MeV and the mass excess of ${}^{27}\mathrm{P}$ was measured to be $\ensuremath{-}0.670(41) \mathrm{MeV}.$ The first excited state of ${}^{23}\mathrm{Al}$ has been resolved from the ground state for the first time at an excitation energy of ${E}_{x}=0.550(20) \mathrm{MeV}.$ The first excited state of ${}^{27}\mathrm{P}$ has been measured for the first time at an excitation energy of ${E}_{x}=1.199(19) \mathrm{MeV}.$ The astrophysical implications of these results for the reaction rates of ${}^{22}\mathrm{Mg}(p,\ensuremath{\gamma}{)}^{23}\mathrm{Al}$ and ${}^{26}\mathrm{Si}(p,\ensuremath{\gamma}{)}^{27}\mathrm{P}$ for the nucleosynthesis of ${}^{22}\mathrm{Na}$ and ${}^{26}\mathrm{Al}$ in Ne novae will be discussed.