Strong evidence of the nucleosynthesis of Galactic ${}^{26}\mathrm{Al}$ has been found through measurements involving excesses in ${}^{26}\mathrm{Mg}$ from the decay of ${}^{26}\mathrm{Al}$ in meteoritic inclusions and the 1.809-MeV $\gamma$-ray line detected by satellites such as CGRO and INTEGRAL. Several sites for the production of ${}^{26}\mathrm{Al}$ have been suggested, including ONe novae. Destruction of ${}^{26}\mathrm{Al}$ in ONe novae is possible via the reactions ${}^{26}\mathrm{Al}{}^g(p,\gamma ){}^{27}\mathrm{Si}$ and ${}^{26}\mathrm{Al}{}^m(p,\gamma ){}^{27}\mathrm{Si}$. In the present work, resonance parameters for the ${}^{26}\mathrm{Al}{}^m(p,\gamma ){}^{27}\mathrm{Si}$ reaction have been determined via studies of the ${}^{27}\mathrm{Al}({}^3\mathrm{He},t){}^{27}\mathrm{Si}{}^{*}(p){}^{26}\mathrm{Al}{}^m$ and ${}^{28}\mathrm{Si}({}^3\mathrm{He},\alpha ){}^{27}\mathrm{Si}{}^{*}(p){}^{26}\mathrm{Al}{}^m$ reactions. Several new ${}^{26}\mathrm{Al}{}^m+p$ resonances have been discovered within 1 MeV above the proton threshold of 7.691 MeV. Excitation energies and proton-branching ratios for those and previously known states are reported.

• Received 25 March 2009

DOI:https://doi.org/10.1103/PhysRevC.80.035806