Mathematical Basis for X-Ray Crystallography and Analysis of Diffraction Patterns

3.7 - Peak Width and Correlation Length

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Date

7-25-2016

Description

Relate Fourier transform of finite sum of Gaussians to peak widths in X-ray scattering measurements. Analogy with diffraction gratings for visible light. Peak width and crystal perfection. The Scherrer Equation. Strain broadening. Williamson-Hall plots. Instrumental resolution. Time 9:04.

Comments

Videos 3.1-3.9 are the most mathematical in the series, and require some knowledge of vectors and calculus. The most calculus-heavy videos are 3.1-3.5, and these can be skipped by those with less mathematical background.

Keywords

Peak width, correlation length, crystal size, Scherrer, Williamson-Hall, resolution

Disciplines

Mathematics | Physics

Creative Commons License

Creative Commons Attribution-Noncommercial 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License

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3.7 - Peak Width and Correlation Length

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