He2+formation in collisions betweenHe+ions and Ne atoms

Abstract

Absolute differential and total cross sections for single electron loss of ${\mathrm{He}}^{+}$ ions impinging on Ne were measured in the energy range from 2.0 to 5.0 keV. The absolute differential cross sections display a decreasing behavior with increasing angle. The measured electron-loss cross sections show a monotonically increasing behavior as a function of the incident energy and are found to be of the order of magnitude between ${10}^{\ensuremath{-}5}$ and ${10}^{\ensuremath{-}4}{\AA{}}^{2}.$ The total cross section is compared with other available measurements and theoretical models at high energy. An extrapolation of the high-energy data to low energies shows good agreement with the present data.