Numerical simulations of X-ray rocking curves in multiple-crystal arrangements

Mathematica was employed to simulate X-ray rocking curves measured in many-crystal arrangements taking into account the divergence and the spectral distribution of the incident beam. The influence of the curvature of the sample on its intrinsic diffraction profile was considered. Although the effect of the monochromator is to smear out the oscillations considerably, it is shown that the radius of curvature can still be determined from the FWHM of the rocking curve.