Total and state-selective electron capture cross sections for C3++H collisions

Abstract

Electron capture cross sections in collisions of C3+ ions with atomic hydrogen have been studied using the close-coupling two-centre atomic orbital (AO) expansion method by treating the collision system in a quasi-two-electron model. Total electron capture cross sections to the dominant individual singlet and triplet excited states are calculated over the energy range 0.1-50 keV amu-1. The results are compared with existing experimental data and with theoretical calculations based on the molecular orbital (MO) expansion method. It is found that our AO results are in general agreement with the MO results of Errea et al (1991 J. Phys. B: At. Mol. Opt. Phys. 24 4061) and with experiments but that discrepancies still exist in the details.