Description: Electron diffraction patterns for single crystal and polycrystalline materials are displayed on a CRT screen. A Welch model 2639 'Electron Diffraction tube' is used in an experiment in ...

and the diffraction pattern is recorded from that region. SAED is particularly useful for studying the local crystal structure, orientation, and phase identification of nanomaterials. CBED is another ...

As the electrons penetrate the sample surface, they interact with the atomic planes of the crystal lattice, causing some electrons to be backscattered. These backscattered electrons form a diffraction ...