Electron capture from hydrogen and helium atoms by fast alpha particles

Abstract

The continuum distorted wave method is applied to study electron capture collisions of fast alpha particles with hydrogen and helium atoms. The cross sections for capture into 1s, 2s, 2p, 3s and 3p final states are calculated in the energy range of 25 keV to 3 MeV. Necessary extensions of the method are done in order to treat capture to excited states.