Total and differential cross-section calculations for proton-impact ionization of hydrogen at low energies

摘要: We have computed the single-differential and total ionization cross sections for proton-hydrogen collision system at low-energy range (0.1\char21{}10 keV/amu), using electron translation factor corrected close-coupling method. Full convergence of as a function ${\mathrm{H}}_{2}^{+}$ molecular basis size was achieved by including up to ten bound states 11 continuum partial waves. The present results are compared with available experimental data various theoretical models. Our calculated in an excellent agreement recent experiments Shah et al. [J. Phys. B. 31, L757 (1998)], but decrease more rapidly than measured Pieksma [Phys. Rev. Lett. 73, 46 (1994)] decreasing energy. found that $1s{\ensuremath{\sigma}}_{g}$ is rather higher-level ladder climbing process direct mechanism; $2p{\ensuremath{\sigma}}_{u}$ electron, on contrary, ionized directly higher levels act temporary trap.