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Related Experiment Video

Updated: Mar 17, 2026

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

Inversion of Dynamical Scattering from Large-Angle Rocking-Beam Electron Diffraction Patterns.

Feng Wang¹, Robert S Pennington¹, Christoph T Koch¹

¹Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany.

Physical Review Letters

|July 16, 2016

Summary

This summary is machine-generated.

This study introduces a new method for determining crystal structure factors from electron diffraction data without needing chemical composition. The technique performs best with wide beam tilt ranges and thin specimens, improving structure retrieval.

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Published on: October 7, 2013

Area of Science:

Materials Science
Crystallography
Electron Microscopy

Background:

Accurate crystal structure determination is crucial for understanding material properties.
Electron diffraction is a powerful technique for analyzing crystalline materials.
Retrieving structure factors from diffraction data can be challenging due to dynamical scattering effects.

Purpose of the Study:

To develop and validate a novel ab initio method for structure factor retrieval.
To assess the method's performance using both experimental and simulated large-angle rocking-beam electron diffraction data.
To investigate the influence of experimental parameters on the accuracy of structure factor retrieval.

Main Methods:

Utilized large-angle rocking-beam electron diffraction.
Employed an ab initio approach, requiring no prior information on atomicity or chemical composition.
Applied global optimization techniques to invert dynamical scattering, focusing on beam tilt range and specimen thickness.

Main Results:

Successfully retrieved structure factors from thin crystal diffraction data.
Demonstrated that the method is effective even with moderate multiple scattering.
Numerical experiments confirmed that a large beam tilt range is optimal for accurate inversion.
Thinner specimens were found to yield better results, minimizing scattering complexities.

Conclusions:

The developed ab initio method offers a robust way to determine structure factors from electron diffraction data.
Optimizing the beam tilt range and minimizing specimen thickness are key to successful structure factor retrieval using this method.
This approach advances the capability of electron diffraction for precise crystallographic analysis without external chemical information.