Low-energy collisions of O2+ with atoms and molecules.

Abstract

Absolute total cross sections for single-electron capture have been measured for collisions of ${\mathrm{O}}^{2+}$ ions with He, Ne, Ar, ${\mathrm{H}}_{2}$, ${\mathrm{D}}_{2}$, ${\mathrm{N}}_{2}$, and ${\mathrm{O}}_{2}$. The relative collision energies of these experiments range from approximately 3 to 400 eV. The electron-capture cross section for ${\mathrm{O}}^{2+}$+He collisions is found to agree well with previous distorted-wave calculations. Capture cross sections are generally larger for molecular targets than for the atomic targets.