Proton stripping to6−stretched states ofAl26

The (α,t) stripping reaction on ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}$ was used to measure the $f_{7/2}$ proton spectroscopic factors for the $4^{\mathrm{-}}$;T=0 (5.39 MeV), $6^{\mathrm{-}}$;0 (6.89 and 7.53 MeV), and $6^{\mathrm{-}}$;1 (9.26, 11.97, 12.40, and 12.55 MeV) states of ${}_{}{}^{26}{}_{}{}^{}\mathrm{Al}$. The T=1 levels were identified with the aid of their analogs known in ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}$ by inelastic electron scattering. Only 31% of the single particle strength is found for the two $6^{\mathrm{-}}$;0 levels and only 59% is found for five $6^{\mathrm{-}}$;1 levels. The lowest $6^{\mathrm{-}}$;1 state has more than twice the spectroscopic factor of any of the others. Further $6^{\mathrm{-}}$ candidate states are also examined.