Charge transfer in C6+-H(1s) collisions at low velocity

Abstract

The cross section for charge transfer to fully stripped carbon ions in collision with ground-state hydrogen atoms is calculated in an adiabatic molecular-orbital basis. In contrast to previous work by Salop and Olson (1976), the cross section obtained by retaining only the dominant 4f sigma -5g sigma radial coupling is oscillatory. The inclusion of rotational coupling to other close-lying states damps out these oscillations to provide a smoothly varying cross section whose magnitude is considerably enhanced over that obtained from the two-state calculation.