MODULATED ELECTRON EMISSION BY SCATTERING-INTERFERENCE OF PRIMARY ELECTRONS

Sergio Valeri and ALESSANDRO di Bona
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Sergio Valeri: Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica, Università di Modena, via Campi 213/A, 41100-Modena, Italy
ALESSANDRO di Bona: Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica, Università di Modena, via Campi 213/A, 41100-Modena, Italy

Surface Review and Letters (SRL), 1997, vol. 04, issue 01, 141-160

Abstract: We review the effects of scattering-interference of the primary, exciting beam on the electron emission from ordered atomic arrays. The yield of elastically and inelastically backscattered electrons, Auger electrons and secondary electrons shows a marked dependence on the incidence angle of primary electrons. Both the similarity and the relative importance of processes experienced by incident and excident electrons are discussed. We also present recent studies of electron focusing and defocusing along atomic chains. The interplay between these two processes determines the in-depth profile of the primary electron intensity anisotropy. Finally, the potential for surface-structural studies and limits for quantitative analysis are discussed, in comparison with the Auger electron diffraction (AED) and photoelectron diffraction (PD) techniques.

Date: 1997
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DOI: 10.1142/S0218625X9700016X

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