HIGH RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY APPLIED TO A GRAPHITE SURFACE MODIFIED BY ION BOMBARDMENT

Denis Roy, Marc Portail and Jean-Marc Layet
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Denis Roy: Centre de Recherche sur les Propriétés des Interfaces et la Catalyse (CERPIC) and Laboratoire de Physique Atomique et Moléculaire (LPAM), Département de Physique, Université Laval, Cité Universitaire, Québec, G1K 7P4, Canada
Marc Portail: Équipe Plasma-Surface, Laboratoire PIIM, UMR 6633–Université de Provence, Case 241, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
Jean-Marc Layet: Équipe Plasma-Surface, Laboratoire PIIM, UMR 6633–Université de Provence, Case 241, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France

Surface Review and Letters (SRL), 2000, vol. 07, issue 04, 463-473

Abstract: This work presents the application of the technique known as high resolution electron energy loss spectroscopy (HREELS) to the study of a modern technological surface. First the physics of the interaction of low energy electrons with surfaces is briefly reviewed. The dielectric theory of inelastic electron scattering is outlined, with its application to surfaces and the excitation of phonons, polaritons and plasmons. Then a study of the modification of a graphite surface by Ar and H ion bombardment is presented, in relation with graphite surfaces modified by plasma wall interactions in fusion reactors. The observations of phonons and low energy plasmons are reported, with the C–H stretching vibrations as well following theH+bombardment. These observations are related to structural and chemical modifications induced by the ion bombardment.

Date: 2000
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DOI: 10.1142/S0218625X00000439

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