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Spectral momentum densities in matter determined by electron scattering

Spectral momentum densities in matter determined by electron scattering In electron momentum spectroscopy (EMS), an incoming energetic electron (50 keV in this work) ionizes the target and the scattered and ejected electrons are detected in coincidence (at energies near 25 keV). From the energy and momentum of the detected particles, the energy and momentum transferred to the target can be inferred. The observed intensity distribution is proportional to the spectral momentum density of the target and hence provides a direct challenge to many‐body theoretical descriptions of condensed matter. This is illustrated by comparing some many‐body calculations with EMS measurements on graphite and polycrystalline aluminium. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section A Foundations of Crystallography Wiley

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References (20)

Publisher
Wiley
Copyright
Copyright © 2004 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0108-7673
eISSN
1600-5724
DOI
10.1107/S0108767303029349
pmid
14966321
Publisher site
See Article on Publisher Site

Abstract

In electron momentum spectroscopy (EMS), an incoming energetic electron (50 keV in this work) ionizes the target and the scattered and ejected electrons are detected in coincidence (at energies near 25 keV). From the energy and momentum of the detected particles, the energy and momentum transferred to the target can be inferred. The observed intensity distribution is proportional to the spectral momentum density of the target and hence provides a direct challenge to many‐body theoretical descriptions of condensed matter. This is illustrated by comparing some many‐body calculations with EMS measurements on graphite and polycrystalline aluminium.

Journal

Acta Crystallographica Section A Foundations of CrystallographyWiley

Published: Mar 1, 2004

Keywords: ;

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