Theoretical study, including correlation effects, of the low-energy photoelectron spectrum of ozone
Abstract
The reasons for the prediction by Koopmans' theorem of the incorrect order of the low-lying ionic states of O+3 are investigated. Such a discrepancy does not arise from differential orbital relaxation occurring on ionization, but is associated with the different correlation energies of the various states of O+3 which we have obtained from large scale configuration interaction calculations.