Study of the chemical transformations induced at the surface of bulk iron by protons and a beams

Christophe Pirlot, Guy Deniau, Pascal Viel, Gérard Lécayon, Guy Demortier, Joseph Delhalle, Zineb Mekhalif

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    Résumé

    In this work the chemical transformations induced by protons and α beams (1017 ion cm−2) at the surface of polycrystalline iron are analysed by X-ray Photoemission Spectroscopy (XPS). Spectroscopic changes for both incident particles are globally different. We show that helium particles contribute to etch away the oxygen leaving the iron surface in a metallic state. In contrast, hydrogen ions do not remove, at least completely, the iron oxidised species present at the surface, but change its oxidation state by reducing Fe2O3 and Fe3O4 to FeO.
    langue originaleAnglais
    Pages (de - à)71-76
    Nombre de pages6
    journalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume185
    Numéro de publication1-4
    Les DOIs
    Etat de la publicationPublié - 2001

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