1. Electron Diffraction Lab
2. What Is Electron Diffraction

X-ray powder diffraction (XRD) is a rapid analytical technique primarily used for phase identification of a crystalline material and can provide information on unit cell dimensions. The analyzed material is finely ground, homogenized, and average bulk composition is determined.

eSpot is a computer program for simulation, indexing and analysis of TEM spot diffraction patters. It has the same functionality as CSpot however limited to spot diffraction patterns.

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Electron Diffraction Lab

Figure 1. eSpot user interface

The program allows for manipulation of simulated diffraction patterns in real-time and in an interactive manner by changing and visualizing crystal orientation and adjusting simulation parameters (e.g., microscope operating conditions). It’s main feature is the ability to perform automatic indexing and determination of crystal lattice orientation. The program contains build-in crystallographic calculators providing additional abilities in the analysis of diffraction patterns. The data produced by eSpot can be saved in a form of bitmaps or reports (Word files). eSpot is mainly dedicated to be a laboratory tool helping in the analysis and interpretation of data. It can be also used as a teaching aid.

The demo version of the software can be downloaded here

Figure 2. Example of TEM spot diffraction patterns (aluminum): experimental (a) and simulated (b) and their superposition (automatically indexed pattern) (c)

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What Is Electron Diffraction