1. Image acceleration of highly charged ions on metal, semiconductor, and insulator surfaces
- Author
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C. Sébenne, V. Le Roux, G. Giardino, M. Froment, C. de Villeneuve, M. Eddrief, B. D'Etat-Ban, Gilles Borsoni, S. Thuriez, J.-P. Briand, Immunologie et chimie thérapeutiques (ICT), Cancéropôle du Grand Est-Centre National de la Recherche Scientifique (CNRS), Research and Scientific Support Department, ESTEC (RSSD), European Space Research and Technology Centre (ESTEC), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), Department of Earth Sciences [Houston], Rice University [Houston], Université de Lille, Sciences et Technologies, Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique de la matière condensée (LPMC), and École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics ,Valence (chemistry) ,Silicon ,business.industry ,Computer Science::Information Retrieval ,chemistry.chemical_element ,Insulator (electricity) ,Electron ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Atomic and Molecular Physics, and Optics ,Metal semiconductor ,Ion ,Metal ,Semiconductor ,chemistry ,Physics::Plasma Physics ,visual_art ,visual_art.visual_art_medium ,[CHIM]Chemical Sciences ,Atomic physics ,business - Abstract
Very slow, highly charged ions impinging on metal surfaces are known to be accelerated by their image and to drop irremediably on the surfaces which they touch or slightly penetrate. We present experiments which demonstrate that above insulators or semiconductors, at normal incidence, the ions are backscattered at a certain distance from the surface and do not touch it. This finding is explained by the transient buildup of positive charges due to the removal of {ital valence} electrons, which overcome the acceleration of the ion by its own image. This effect is found to cancel out at grazing incidence. {copyright} {ital 1997} {ital The American Physical Society}
- Published
- 1997
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