Z-dependence of forward scattering peak intensity of electron by atoms

[Display omitted] The dependence of the forward scattering peak intensity I on Z was considered as the power law I ̴ Zα, and the value of α was discussed. Using the Yukawa potential and the first Born approximation α = 2 is obtained as in the Z2 contrast of the HAADF-STEM. The simulation shows α at...

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Bibliographic Details
Published in:Chemical physics letters 2022-11, Vol.806, p.140003, Article 140003
Main Authors: Daimon, Hiroshi, Tanaka, Ikko
Format: Article
Language:English
Subjects:
Forward scattering
HAADF-STEM
Photoelectron diffraction
Photoelectron holography
Z-dependence
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Summary:[Display omitted] The dependence of the forward scattering peak intensity I on Z was considered as the power law I ̴ Zα, and the value of α was discussed. Using the Yukawa potential and the first Born approximation α = 2 is obtained as in the Z2 contrast of the HAADF-STEM. The simulation shows α at Ek = 600 eV and 30 keV are about 1/2 and 1, respectively. Z-dependence of the screening constant could explain α = 1 at Ek = 30 keV. This knowledge of Z dependence will help elemental analysis in photoelectron holography.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2022.140003