Resonant-Auger-state-selected dissociation dynamics and dissociation limits of N 1s→π* core excited N2 molecules studied using a two-dimensional Auger-electron-photoion coincidence method

Abstract The dissociation dynamics of core-excited N 2 molecules has been investigated using a two-dimensional Auger electron photoion coincidence method, where the kinetic energies of Auger electrons and ions are measured in coincidence. From the energy correlations between the binding energies of the resonant Auger states and the ion kinetic energy release, the electronic states of fragments at the dissociation limit are investigated for each Auger peak. We also estimate the contribution of double Auger decay to the total Auger spectrum by analyzing events where two N + ions or metastable doubly charged ions N 2 ++ were detected.