Electron differential cross section forH−-He stripping collisions

The Born approximation and a closure technique are employed to obtain the single and double differential cross sections for the ejected electron produced by electron detachment of ${\mathrm{H}}^{-}$ ions in collisions with He. Comparison is made to the recent measurements of Menendez and Duncan at 0.5 MeV. The theoretical results show that the experimentally observed structure in the double differential cross sections in the forward direction can be explained in terms of single-electron-loss processes alone.