Single differential and total scattering cross sections for electrons ejected in collisions of fast bare ions with atomic hydrogen

The single differential (in electron angle or energy) and total scattering cross sections for the process ${\mathrm{H}}^{+}+\mathrm{H}\mathrm{}\left(1s\right)\mathrm{}\to {\mathrm{H}}^{+}+{\mathrm{H}}^{+}+e$ are calculated as functions of the incident proton kinetic energy. The calculation is based on the first-order term of a multiple-scattering theory proposed in a previous paper. The results are compared with experiments and other theoretical values. The behavior of the ionization cross section is studied as a function of the projectile charge. This variation is shown for the ${\mathrm{He}}^{2+}$-H collision.