State-selective and total single-capture cross sections for fast collisions of multiply charged ions with helium and lithium

Cross sections for charge exchange in He 2+ −He, Li 3+ −He, H + −Li and He 2+ −Li collisions are computed at impact energies ranging from 10 keV to 7 MeV. An independent particle model and the Roothaan-Hartree-Fock target screening is adopted within the Corrected First Born (CBI) perturbation theory for formation of various hydrogenlike atoms or ions in final nlm states with principal quantum numbers n ⩽ 4. The results for the total capture summed over all bound nlm states are compared with available experimental data. Particularly good agreement is found between the CBI approximation and the most recent measurements of Gilbody et al. [J. Phys. B18 , 889 (1985); ibid. 18 , 4245 (1985)] as well as of de Castro Faria et al. [Phys. Rev. A37 , 280 (1988)].