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Journal Articles Journal of Physics: Conference Series Year : 2008

Surface analysis with grazing incidence fast atom diffraction (GIFAD)

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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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