Electron transfer from hydrogenlike atoms to partially and completely stripped projectiles: CDW approximation

Abstract

Electron transfer from hydrogenlike target systems to multiply charged projectiles is examined within the Continuum Distorted Wave (CDW) approximation. Using vector spherical harmonics, the most concise analytical expressions are derived for the transition amplitude in the case of arbitrary initial and final hydrogenic bound states. The resulting algorithm is superior to any of the computational devices previously proposed in connection with the CDW method. The present code is used to provide comprehensive tables of the state-selective and total cross sections for charge exchange in collisions between atomic hydrogen and completely stripped projectiles at incident energies ranging from 25 keV to 10 MeV. These data also yield results for partially stripped projectiles by applying the appropriate mass and charge scaling. Thorough comparisons between the CDW theory and experiments on electron capture from atomic hydrogen by completely and partially stripped projectiles reveal systematically good agreement.