Large-angle inelastic electron-helium scattering in the unrestricted Glauber approximation

The work of Gau and Macek on large-angle inelastic electron-hydrogen scattering in the unrestricted Glauber approximation is extended to electron-helium scattering. "Unrestricted" in this context means that we do not make the additional approximation of purely transverse linear-momentum transfer. Once again, we find at large angles for $1{}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}\to 2{}_{}{}^1{}_{}{}^{}P_1^{}{}_{}{}^{}$ collision-induced transitions the electron-nucleus interaction dominates and has a $q^{-4\mathrm{}}$ behavior in the differential cross section. Further, we calculate the orientation parameter $O_{1-}^{\mathrm{col}}$.