Measurements of vibrational excitation of N2, CO, and NO by low energy proton impact

摘要

Differential scattering experiments are reported for proton impact on N2, CO, and NO in the energy rangeElab=30ndash;80 eV. The measurements include the range of very small scattering angles around 0deg; as well as the rainbow region. The vibrationally resolved energyhyphen;loss spectra show a relatively low vibrational inelasticity for all three systems. Differential cross sections, transition probabilities, and the mean vibrational energy transfer are presented. Rotational excitation is indicated by the broadening of the energyhyphen;loss peaks which is most significant for H+ndash;NO. The smallhyphen;angle scattering data for vibrational excitation in CO show good agreement with the impact parameter theory using the known longhyphen;range interactions for this system.