Differential single-electron capture cross sections in low-energy Ar-q+ (q=4-8) ions - He and Ar collisions


Edens J., Kamber E., AKGÜNGÖR K., Ferguson S.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol.111, no.1-2, pp.27-30, 1996 (SCI-Expanded) identifier identifier

Abstract

Differential cross sections for single-electron capture by Ar-q+ ions (q = 4-8) from He and Ar have been measured at impact energies between 600 and 2500 eV, and projectile scattering angles between 0 and 25 mrad. The experimental angular distributions contain a main peak lying near a critical angle theta(c), which corresponds to capture at an impact parameter equal to the crossing radius. The results are quantitatively explained by a semi-classical model based on Coulomb potential energy curves.