Debye-Scherrer Rings in Electron Diffraction Patterns - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book https://www.globalsino.com/EM/ | ||||||||
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A electron diffraction pattern of an amorphous specimen is typically a halo feature, while a diffraction pattern of a polycrystalline specimen shows well defined sharp Debye-Scherrer rings, indicating the presence of LRO in the specimen. Zero-loss filtering of elastically scattered electrons in EFTEM removes the contribution of inelastically scattered electrons and increases the contrast of amorphous, small-angle and Debye-Scherrer diffraction patterns.
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