Models for precession electron diffraction

Abstract

Precession Electron Diffraction has become an increasingly popular method of obtaining crystallographic data, and may well replace older methods such as selected area diffraction or microdiffraction. While a full model has to involve a dynamical calculation, some approximations give some indication how the results vary as a function of thickness and precession angle. This note reviews some of the basic models, their advantages and failures as well as some of the open issues. © 2012 Springer Science+Business Media Dordrecht.