Abstract
Differential scattering of He+ ions by He atoms in the energy range of 10 to 100 eV over the scattering angle from 2° to 20° has been measured using the crossed beam apparatus. Prominent oscillatory structures in the differential cross section resulting from the interference between waves scattered from the lowest gerade 2Σg+ and ungerade 2Σu+ states of a pseudo-molecular ion He2+ were observed. The rainbow peak due to the elastic scattering of He+ by He was observed superimposingly upon these oscillatory structures due to the resonant electron capture. The relative differential cross sections were normalized to the absolute data of Lorents and Aberth.
