The measurement of intensities in the Rotation Electron Diffraction Technique

The Rotation Electron Diffraction Technique, recently developed at the University of Stockholm, has been used to acquire three-dimensional electron diffraction data. A mathematical expression to calculate the excitation errors, s_g, is suggested by considering the diffraction geometry and the rotation axis. In order to plot the rocking curves, diffraction patterns taken from CoP₃ cubic structure (a=7.708Å, space group Im3¯) are used as examples. Intensities of some reflections are derived by Multigauge software during the beam tilt series. Rocking curves for two Friedel pair reflections with different angles from the rotation axis are plotted.