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Journal Articles Journal of Physics: Conference Series Year : 2008

Surface analysis with grazing incidence fast atom diffraction (GIFAD)

Abstract

Grazing collisions at surfaces offer rather contrasted conditions. For well ordered flat surfaces, the scattering is spread among several lattice sites, each of which produces only a tiny elementary deflection. If, in addition, the atomic projectile is aligned along a crystallographic direction, the surface appears as made of parallel furrows or as a washboard which act as a diffraction grating for the atomic wave. We will show that the analysis of characteristic diffraction pattern recorded on a position sensitive detector located downstream allows a sensitive measure of the shape of the surface electronic density. A modified Debye Waller factor is proposed to explain the observed diffraction signal.
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Dates and versions

cea-00358934 , version 1 (04-02-2009)

Identifiers

  • HAL Id : cea-00358934 , version 1

Cite

Patrick Rousseau, Hocine Khemliche, Nenad Bundaleski, Pierre Soulisse, Anouchah Momeni, et al.. Surface analysis with grazing incidence fast atom diffraction (GIFAD). Journal of Physics: Conference Series, 2008, 133, pp.012013. ⟨cea-00358934⟩
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