Satellite excitations due to internal inelastic scattering in the K-shell photoemission from CO2

Abstract The O and C 1s photoelectron satellites for the CO 2 molecule fixed in space parallel to the electric vector of the incident radiation E are found to be more intense, in general, than those perpendicular to E and are enhanced at the photon energy in the vicinity of the shape resonance for the single-hole ionization cross section. This suggests that the excitation of the valence electron may be caused by the internal inelastic scattering of a primary 1s photoelectron with a valence electron.