Excitation of the n=2 states of H in He2+-H collisions

Abstract
A crossed beam method has been used to study the excitation of the n=2 states of H in He2+-H collisions by observing both spontaneous and electric field induced Lyman alpha radiation. Cross sections for H(2p) and H(2s) formation have been determined in the respective energy ranges 13.3-66.6 keV amu-1 and 33.3-66.6 keV amu-1 and shown to be in reasonable general accord with the predictions of recent close-coupling calculations.