Auger-electron-photoion coincidence study of SF6 excited by 196 eV photons shows that the dications having two holes in the outer-valence bands dissociate into various ionic fragments, while those having one hole in the outer-valence and one hole in the inner-valence (F 2s) bands mostly dissociate into atomic ionic fragments F+ and S+. Measurement of photoion-photoion coincidence efficiency curves in the S 2p threshold region reveals that not only the S 2p→t2g and eg excitation above the S 2p threshold but also the S 2p→a1g excitation below the S 2p threshold enhance the ion-pair formation, suggesting that a considerable part of the resonance-Auger-final states are subject to autoionization.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry