Multielectron coincidence spectroscopy for core-valence doubly ionized states of CO

Abstract

Double photoionization into states which have holes in one core and one valence orbitals has been observed in CO using a state-of-the-art multielectron coincidence method. The core-valence C O2+ structures exhibited on the electron coincidence spectra are assigned by comparison with the available calculation [H. Schulte, J. Chem. Phys. 105, 11108 (1996)]. Features of the spectrum confirm that the properties of the C O2+ states are characterized by the interaction between the localized valence holes and the core holes. © 2007 American Institute of Physics.