Effect of target distortion on electron detachment differential cross section forH−+ He andH−+ H collisions

We have investigated the effect of target distortion on the electron-detachment differential cross sections for ${\mathrm{H}}^{-}$-ion collisions on He and H atoms in the 100-keV-100-MeV energy region. In the present paper we are concerned with the following process: ${\mathrm{H}}^{-}+M\to \mathrm{H}+e+M$ for the production of H atoms. The target denoted by $M$ is not excited and the H atom can be produced in any of its states. Semiclassical JWKB and eikonal approximations are used to treat the distortion of the target by the incident ${\mathrm{H}}^{-}$ ion. The results which are compared with the Born approximation indicate a significant difference at the forward direction.