Energetics of the ionization and fragmentation of phosphorus oxyfluoride studied by electron-impact spectroscopy

Abstract

The relative intensities and appearance energies of several positive ions in the mass spectrum of POF₃ are reported together with an ionization-efficiency curve for F^–, the only negative ion of significant intensity. Probable ion-fragmentation pathways are proposed together with the heats of formation of some positive ions and ionization energies for POF₂ and POF. The appearance energies of various electronic states of the observed ions have been determined by deconvolution of the experimental ionization efficiency curves by the energy-distribution difference method.