Total and partial cross sections for electron capture in collisions of hydrogen atoms with fully stripped ions

Abstract

Systematic investigations of charge-transfer reactions H/sup +/+A/sup( Z/-1)+(n,l) (A/sup Z/+) being a fully stripped ion) within the multichannel Landau-Zener theory with rotational coupling included (MLZRC) are presented. Total cross-section (sigma) calculations in the energy region 0.03--80 keV/amu for selected projectiles with charges 5< or =Z< or =74 are performed. Oscillations in the Z dependence of sigma are observed at low collision energies in the low-Z region. Above this region the Z dependence of sigma is linear. The n,l distributions of captured electrons are investigated and results for the partial cross sections sigma/sub n/ for a number of reactions are presented. The maxima of n distributions appear at n/sub m/roughly-equalZ/sup 3/4/ (in accordance with other theoretical predictions) and have a weak velocity dependence. Validity and limitations of the MLZRC model and the obtained results are discussed.