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Atomic scattering factors for K-shell electron energy-loss spectroscopy
Acta Crystallographica. Section A, Foundations of Crystallography
|October 27, 2001
Summary
Accurate atomic scattering factors for K-shell electron energy-loss spectroscopy (EELS) were computed for elements C to Sn. These results, based on advanced wave functions, are parameterized for broad applicability in electron microscopy and materials analysis.
Area of Science:
- Atomic Physics
- Materials Science
- Electron Microscopy
Background:
- Electron energy-loss spectroscopy (EELS) is a powerful technique for elemental analysis.
- Accurate atomic scattering factors are crucial for quantitative EELS analysis.
- Previous calculations may lack parameterization for broad experimental conditions.
Purpose of the Study:
- To calculate and parameterize atomic scattering factors for K-shell EELS.
- To cover elements from carbon (Z=6) to tin (Z=50).
- To provide a versatile tool for researchers in materials science and physics.
Main Methods:
- Calculations utilized relativistic Hartree-Fock wave functions for bound states.
- Hartree-Slater wave functions were employed for continuum states.
- Results were parameterized for various experimental parameters.
Main Results:
- Atomic scattering factors were computed for K-shell EELS.
- Parameterizations cover incident electron energies from 50 to 400 keV.
- Scattering factors are valid for collection semi-angles of 10-40 mrad and energy windows of 25-100 eV.
Conclusions:
- The parameterized atomic scattering factors enable accurate quantitative EELS analysis.
- This work provides a valuable resource for K-shell EELS studies across a range of elements.
- The parameterizations facilitate application in diverse electron microscopy setups.