Stretched states inMg26from the(α25,3He) reaction at 81 MeV

The ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}$(α, ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ ${)}^{26}$Mg reaction was used at 80.9 MeV to investigate the stretched $6^{\mathrm{-}}$ states from the ($d_{5/2}^{\mathrm{-}1}$,$f_{7/2}$) particle-hole configuration, which had been identified by inelastic electron scattering. The summed spectroscopic factors for the T=1 $6^{\mathrm{-}}$ states are only about 27% of the expected strength and are to be compared to 85% of the extreme single model strength found in inelastic electron scattering. The T=1 $6^{\mathrm{-}}$ spectroscopic strength is considerably more fragmented in the mass 26 system than it is in mass 28.