Electron scattering by surface adsorbates

Theoretical and experimental methods used to describe electron scattering b y surface adsorbates are reviewed. A new R-matrix theory, which describes e lectron scattering by diatomic molecules physisorbed on a surface modelled by a jellium potential, is then described. This theory provides an accurate description of the molecular wave function and enables the scattered part of the wave function, excluding the incident wave, to be calculated directl y. Preliminary calculations for nitrogen orientated perpendicular to a meta llic jellium surface are then presented and future directions of research a re discussed.