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Everything about Diffraction topography

X-ray imaging technique

Diffraction topography is an imaging technique based on Bragg diffraction. Diffraction topographic images ("topographies") record the intensity profile of a beam of X-rays diffracted by a crystal. A topography thus represents a two-dimensional spatial intensity mapping (image) of the X-rays diffracted in a specific direction, so regions which diffract substantially will appear brighter than those which do not. This is equivalent to the spatial fine structure of an Laue reflection. Topographs often reveal the irregularities in a non-ideal crystal lattice. X-ray diffraction topography is one variant of X-ray imaging, making use of diffraction contrast rather than absorption contrast which is usually used in radiography and computed tomography (CT). Topography is exploited to a lesser extent with neutrons, and is the same concept as dark field imaging in an electron microscope. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Diffraction topographyA 5-minute orientation
  2. Skim a recent paper: Approach for monitoring the topography of laser-induced periodic surface structures using a diffraction-based measurement methodInfluential work since 2022
  3. Pick up a classic book: High Resolution X-Ray Diffractometry and TopographyThe most-reprinted book on the subject
  4. Read the landmark paper: Use of synchrotron radiation in X-ray diffraction topographyCited 201 times
  5. Go sideways: Dark-field X-ray microscopyA closely related topic
  6. Go sideways: Three-dimensional X-ray diffractionA closely related topic

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