Breakdown of the dipole approximation in core losses

The validity of the dipole approximations commonly used in the inelastic scattering theory for transmission electron microscopy is reviewed. Both experimental and numerical arguments are presented, emphasizing that the dipole approximations cause significant errors of the order of up to 25% even at...

Descripción completa

Detalles Bibliográficos
Autores principales: Löffler, S., Ennen, I., Tian, F., Schattschneider, P., Jaouen, N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2011
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3268650/
https://www.ncbi.nlm.nih.gov/pubmed/21741917
http://dx.doi.org/10.1016/j.ultramic.2011.03.006
_version_ 1782222399249317888
author Löffler, S.
Ennen, I.
Tian, F.
Schattschneider, P.
Jaouen, N.
author_facet Löffler, S.
Ennen, I.
Tian, F.
Schattschneider, P.
Jaouen, N.
author_sort Löffler, S.
collection PubMed
description The validity of the dipole approximations commonly used in the inelastic scattering theory for transmission electron microscopy is reviewed. Both experimental and numerical arguments are presented, emphasizing that the dipole approximations cause significant errors of the order of up to 25% even at small momentum transfer. This behavior is attributed mainly to non-linear contributions to the dynamic form factor due to the overlap of wave functions.
format Online
Article
Text
id pubmed-3268650
institution National Center for Biotechnology Information
language English
publishDate 2011
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-32686502012-01-30 Breakdown of the dipole approximation in core losses Löffler, S. Ennen, I. Tian, F. Schattschneider, P. Jaouen, N. Ultramicroscopy Article The validity of the dipole approximations commonly used in the inelastic scattering theory for transmission electron microscopy is reviewed. Both experimental and numerical arguments are presented, emphasizing that the dipole approximations cause significant errors of the order of up to 25% even at small momentum transfer. This behavior is attributed mainly to non-linear contributions to the dynamic form factor due to the overlap of wave functions. Elsevier 2011-07 /pmc/articles/PMC3268650/ /pubmed/21741917 http://dx.doi.org/10.1016/j.ultramic.2011.03.006 Text en © 2011 Elsevier B.V. https://creativecommons.org/licenses/by-nc-nd/3.0/ Open Access under CC BY-NC-ND 3.0 (https://creativecommons.org/licenses/by-nc-nd/3.0/) license
spellingShingle Article
Löffler, S.
Ennen, I.
Tian, F.
Schattschneider, P.
Jaouen, N.
Breakdown of the dipole approximation in core losses
title Breakdown of the dipole approximation in core losses
title_full Breakdown of the dipole approximation in core losses
title_fullStr Breakdown of the dipole approximation in core losses
title_full_unstemmed Breakdown of the dipole approximation in core losses
title_short Breakdown of the dipole approximation in core losses
title_sort breakdown of the dipole approximation in core losses
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3268650/
https://www.ncbi.nlm.nih.gov/pubmed/21741917
http://dx.doi.org/10.1016/j.ultramic.2011.03.006
work_keys_str_mv AT lofflers breakdownofthedipoleapproximationincorelosses
AT enneni breakdownofthedipoleapproximationincorelosses
AT tianf breakdownofthedipoleapproximationincorelosses
AT schattschneiderp breakdownofthedipoleapproximationincorelosses
AT jaouenn breakdownofthedipoleapproximationincorelosses

Ejemplares similares