Structure of Molecular Adsorbates on Surfaces.

This project had as its primary objective and extension of the ESDIAD Electron Stimulated Desorption Ion Angular Distribution method to the study of interesting molecular adsorbates structure on single crystal surfaces. A second objective was to develop a digital ESDIAD apparatus capable of more accurate study of ion angular distributions from the ESDIAD phenomena. The fundamental fact that positive ions are ejected from adsorbates along the fragmentation bond direction was employed in all of these studies. The studies have affirmed the utility of digital ESDIAD to deliver information about the detailed orientation of chemical bonds at surfaces, and about the molecular dynamics of surface species on single crystals.