Abstract

Electron capture from excited H(2s) and H(2p) targets by protons and alpha particles, at intermediate and high collision energies, is theoretically studied employing three distorted wave models. This study is carried out using the Continuum Distorted Wave, the Continuum Distorted Wave – Eikonal Initial State and the Continuum Distorted Wave – Eikonal Final State approximations, according to the symmetry of the collision reaction. Total and partial cross sections are calculated and compared with other existing theoretical results. The influence of the polarization of the initial states on the cross sections is also analyzed.

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