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Application of the trajectory method for the solution of the time-dependent Thomas-Fermi-Dirac equation to H++Ar collisions

A trajectory method for the solution of the time-dependent Thomas-Fermi-Dirac equation is applied to atomic scattering processes. The time evolution of the electron density is described by trajectories of test particles. This method is studied in the case of proton-impact ionization of an argon atom. Various cross sections for electron production, also differential in the emission angle and energy, are calculated and compared with experimental data.