Differential scattering cross section for excitation in He+Ne collisions

The impact parameter method is used to investigate the excitation of the (2p 5 3s) 1 P of Ne in He + Ne collision. It is assumed that excitation occurs mainly by a transition from the B 2 Sigma state to the excited C 2 Sigma state in the vicinity of the pseudo crossing of their respective potential energy curves. The potential parameters of Sidis and Lefebvre-Brion (1971) are adopted. The calculations which have been made at impact energies 0.7 keV and 1.58 keV are in very good agreement for tau <3 keV deg with the experimental results of Baudon et al. (1970). Limitations of the methods used are discussed.