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Updated: Oct 8, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Orientation dependence of ionization edges in EELS
P Schattschneider1, C Hébert, B Jouffrey
1Institut für Angewandte und Technische Physik, Technische Universität Wien, Austria. schatt@atp6000.tuwien.ac.at
Abstract:
Anisotropy in the density of unoccupied states can be detected in the fine structure of ionization edges in angle-resolved EELS. It is shown that in a crystal an interference term occurs in the inelastic signal, and how it relates to electron channeling and site selection. The combination of orientation and site selection induces subtle variations in the ELNES. It is shown how this technique can be used to analyze local anisotropy related to the point group of the target atom. A second example shows how to extract non-dipole transitions at small scattering angles.
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