Angle-resolved photon-stimulated desorption of oxygen ions from a W(111) surface

A definitive determination of angle-resolved photon-stimulated desorption of ions from a well-characterized adsorbate, and a direct comparison with electron-stimulated desorption are reported. Ion angular distributions, energy distributions, and photon excitation spectra for O+ desorption from W(111) have been measured for oxygen coverages ranging from a fractional monolayer to a multilayer oxide. © 1980 The American Physical Society.