Differential quantitative analysis of background structure in energy-filtered convergent-beam electron diffraction patterns

The background remaining in energy-filtered convergent-beam electron diffraction (CBED) patterns is composed of a slowly varying diffuse component and a signal of much higher angular frequency that mimics the distribution of the elastic signal within each reflection. A model for this background is proposed and verified by a differential analysis of some experimental energy-filtered CBED patterns. This work paves the way for a new approach to quantitative CBED.