Dynamical Scattering: Electron Diffraction

This lecture covers the concept of dynamical scattering in electron diffraction, where electrons interact strongly with matter, leading to multiple scattering events. The lecture explains how dynamical scattering affects the interpretation of diffraction patterns, making them challenging to analyze. Topics include relaxation of Bragg condition, excitation errors, and intensity modulation. The instructor discusses the formation of thickness fringes, extinction distance, and bend contours in electron diffraction. Additionally, the lecture explores double diffraction phenomena and the implications of twinning in diffraction patterns. Various applications of electron diffraction, such as crystal defect imaging and crystal phase discrimination, are also presented.