Numerical Simulation of Electron Detachment from the H– Ion by Electron Impact

摘要

A one-dimensional problem in which an incident electron is described as a classical particle with constant energy and its trajectory is determined by the impact parameter is considered. Further integration is performed over the impact parameter. The interaction of an electron localized on an ion with a core is assumed to be described by the model Hulten potential. This electron is described quantum-mechanically. Calculations are made by the method of split evolution with regularization of Coulomb features of potentials. The calculation results demonstrate the possibilities of the model. The cross section for electron detachment as a function of collision energy and spectra of electrons flying out in both directions that is allowed in the one-dimensional model are calculated. It is shown that the one-dimensional problem is not in quantitative agreement with experimental data. Calculations within the framework of a more realistic (three-dimensional) model are required to achieve a better agreement with experimental data.