Crystal truncation rods in kinematical and dynamical x-ray diffraction theories
Other Condensed Matter
2018-01-11 v1
Abstract
Crystal truncation rods calculated in the kinematical approximation are shown to quantitatively agree with the sum of the diffracted waves obtained in the two-beam dynamical calculations for different reflections along the rod. The choice and the number of these reflections are specified. The agreement extends down to at least of the peak intensity. For lower intensities, the accuracy of dynamical calculations is limited by truncation of the electron density at a mathematically planar surface, arising from the Fourier series expansion of the crystal polarizability.
Cite
@article{arxiv.cond-mat/0702679,
title = {Crystal truncation rods in kinematical and dynamical x-ray diffraction theories},
author = {Vladimir M. Kaganer},
journal= {arXiv preprint arXiv:cond-mat/0702679},
year = {2018}
}