Total and differential charge transfer cross sections in H++Na(3s) or Na*(3p) collisions

Abstract

Proton-sodium charge transfer is studied, using 9- and 19-state adiabatic molecular bases and the impact parameter method, in the energy range 0.5-5 keV. The dynamical radial and rotational coupling terms and a common translation factor (CTF) are included. The effect of the choice of the coordinate centre on the total charge exchange cross sections to H(n=2) is clearly demonstrated when no CTF is included. The alignment dependence of the capture to H(n=2) is obtained and is satisfactorily compared with the atomic expansion calculations. State-to-state charge exchange differential cross sections are calculated; the alignment and orientation effects are expected to be observable at the collision energy 0.5 keV where they are spread out at scattering angles theta >0.1'.