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Figure 5
Electron atomic scattering factors fel as derived by Peng et al. (1996BB46). (a) The change in fel with s = sinθ/λ = 1/(2dhkl). Since for small Bragg angles [\sin\theta \simeq \theta] holds, the numerical value for s for the indexed vertical bars (γ-Fe) also gives about one-tenth of the Kikuchi band width for 20 keV electrons in degrees. (b) A plot of fel = f(Z), proving that fel ∝ Z can be assumed only for dhkl > 1.25 Å (s > 0.4 Å−1). The red dotted line indicates a large Z range for d = 2.5 Å where fel is nearly constant.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 56| Part 2| April 2023| Pages 367-380
https://doi.org/10.1107/S1600576723000845
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