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ELECTRON ENERGY LOSS SPECTRA BY RICOCHET SCATTERING
Journal article   Open access

ELECTRON ENERGY LOSS SPECTRA BY RICOCHET SCATTERING

S. M. Bose and P. Longe
Le Journal de Physique Colloques, v 48(C9), pp C9-901-C9-905
Dec 1987
DOI: https://doi.org/10.1051/jphyscol:19879159
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url
https://hal.science/jpa-00227272/file/ajp-jphyscol198748C9159.pdfView
SubmittedOpen Access (License Unspecified),  Open

Abstract

When a beam of electrons is incident quasi-parallel to the surface of a metal the electrons have a high probability to undergo a ricochet scattering with the excitation of a surface plasmon. The scattering cross section peaks along critical directions of emergence depending on the energy ε of the scattered electrons. Experimental determination of these directions as a function of ε can yield direct information on the dispersion relations for a variety of two- and one-dimensional plasmons. Lorsqu'un faisceau d'électrons atteint la surface d'un métal avec une incidence quasi-parallèle, les électrons ont une grande probabilité d'être diffusés par ricochet en excitant un plasmon de surface. La section efficace de diffusion présente un pic pour des directions critiques d'émergence dépendant de l'énergie ε des électrons diffusés. La détermination expérimentale de ces directions en fonction de ε peut fournir une information directe sur les relations de dispersion, ceci pour divers plasmons bi- ou monodimensionnels.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Physics, Condensed Matter
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