A refinable three-parameter equation for phenomenological absorption in quantitative electron microscopy - determining the equation

© Philip N. H. Nakashima et al. 2025.

Détails bibliographiques
Publié dans:Journal of applied crystallography. - 1998. - 58(2025), Pt 5 vom: 01. Okt., Seite 1665-1676
Auteur principal: Nakashima, Philip N H (Auteur)
Autres auteurs: Liu, Tianyu, Smith, Andrew E, Bourgeois, Laure
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Journal of applied crystallography
Sujets:Journal Article differential QCBED electron scattering calculations inelastic scattering factors phenomenological absorption quantitative convergent-beam electron diffraction quantitative transmission electron microscopy
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520 |a A three-term equation for phenomenological absorption of electron beams in materials is derived for use in quantitative transmission electron microscopy simulations. This is motivated by differential quantitative convergent-beam electron diffraction (QCBED) using CBED patterns that have not been electron-optically energy filtered. As a starting point, this three-parameter function reproduces inelastic scattering factors generated by the ubiquitous ATOM subroutine of Bird & King [Acta Cryst. (1990), A46, 202-208] to within a few per cent, spanning elements Z = 1 to 98, Debye-Waller parameters from B = 0.05 Å2 to B = 2.0 Å2, scattering angles from s = 0 Å-1 to s = 6.0 Å-1 and electron energies from E 0 = 1 keV to E 0 = 1 MeV. As such, it is applicable to zero-energy-loss electron-optically filtered pattern matching for which the Bird and King ATOM subroutine was designed. Crucially, the coefficients of the three terms in the present equation can be refined to produce inelastic scattering factors with differing local and non-local contributions, which are better suited to unfiltered differential QCBED pattern matching 
650 4 |a Journal Article 
650 4 |a differential QCBED 
650 4 |a electron scattering calculations 
650 4 |a inelastic scattering factors 
650 4 |a phenomenological absorption 
650 4 |a quantitative convergent-beam electron diffraction 
650 4 |a quantitative transmission electron microscopy 
700 1 |a Liu, Tianyu  |e verfasserin  |4 aut 
700 1 |a Smith, Andrew E  |e verfasserin  |4 aut 
700 1 |a Bourgeois, Laure  |e verfasserin  |4 aut 
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