Differential cross sections for single-electron capture processes by low-energy multiply charged ions

Abstract

Doubly differential cross sections, in energy and angle, for state-selective single-electron capture by Ne 3+, Ne 4+ ions from Ne, and Ne 6+ ions from He have been measured at laboratory impact energies between 60 and 600 eV and scattering angles between 0° and 5°. The measurements show that the angular distributions of the reaction channels with large energy-gain values are shifted towards larger scattering angles as would be expected. The energy-gain spectra are interpreted qualitatively in terms of the reaction window, which are calculated using the single-crossing Landau-Zener model.