High-spin stretched states excited in (n,p) reactions at 300 MeV

Differential cross sections were measured and compared to distorted-wave impulse-approximation calculations for the ${\mathit{J}}^{\mathrm{\pi }}$=$4^{\mathrm{-}}$(ν${\mathit{d}}_{5/2}$,π${\mathit{p}}_{3/2}^{\mathrm{-}1}$) state excited in the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(n,p${)}^{12}$B (4.52 MeV) reaction, the ${\mathit{J}}^{\mathrm{\pi }}$=$6^{\mathrm{-}}$(ν,${\mathit{f}}_{7/2}$π${\mathit{d}}_{5/2}^{\mathrm{-}1}$) state excited in the ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$(n,p${)}^{28}$Al (5.175 MeV) reaction, and the ${\mathit{J}}^{\mathrm{\pi }}$=${10}^{\mathrm{-}}$(ν${\mathit{h}}_{11/2}$,π${\mathit{g}}_{9/2}^{\mathrm{-}1}$) state excited in the ${}_{}{}^{120}{}_{}{}^{}\mathrm{Sn}$(n,p${)}^{120}$In (≃0.0 MeV) reaction at 300 MeV. We obtained a normalization factor of 0.68 for the ${\mathit{J}}^{\mathrm{\pi }}$=${10}^{\mathrm{-}}$(ν${\mathit{h}}_{11/2}$,π${\mathit{g}}_{9/2}^{\mathrm{-}1}$) state excited in ${}_{}{}^{120}{}_{}{}^{}\mathrm{Sn}$(n,p${)}^{120}$In (≃0.0 MeV) reaction; this is the first ‘‘1ħω’’ stretched state known in this mass region.