Ionization of water molecules by proton impact: Two nonperturbative studies of the electron-emission spectra

摘要

Two nonperturbative methods are applied to obtain total and singly differential (in the electron energy) crossnsections of electron emission in proton collisions with H2O at impact energies in the range 10 keV u0002 Ep u0002n5 MeV. Both methods, one classical and one semiclassical, combine an independent particle treatment with anmulticenter model potential description of the target. The excellent agreement obtained with experimental datansupports the usefulness of the approximations involved and encourages the study of more complex systems.