Charge-transfer cross sections for protons colliding with hydrogenic ions. I

Theoretical angular distributions and total charge-transfer cross sections have been studied for protons impinging on highly ionised (hydrogenic) systems He1+, Li2+, Be3+, B4+, C5+, N6+, O7+, Fe25+ in the Coulomb projected Born approximation of Geltman (1971). The angular distribution curves exhibit sharp dips in the forward direction for all the ionised systems. The present calculations of Glembocki and Halpern (1977). ZT7 sigma treated as a function of E/ZT2 for all the cases studied are found to follow an almost identical curve which lies lower than the OBK universal curve. The total cross sections converge to hydrogen results at high equivalent incident proton energy.