Excitation of Li by He2+ion impact between 15 and 600 keV

Emission cross sections have been measured for the 2p to 2s resonance line and the 3d to 2p line of lithium produced by He 2+ ion impact in the energy region of 15-600 keV. For the 2p level the corresponding excitation cross sections are evaluated. The cross sections obtained are compared with experimental and theoretical data for electron impact at the same velocity. In general the cross sections for electron impact are relatively the largest.