Observation of dissociative states of O₂⁺by threshold photoelectron-photoion coincidence

Abstract

Using monochromatised synchrotron radiation as an excitation source, threshold photoelectron-photoion coincidence experiments have been performed on energy-selected states of O2+. Predissociation is observed for the b4 Sigma g- and c4 Sigma u- states. Two dissociation continua are observed between 23 and 24.5 eV.