The Helmholtz wave equation for X-rays in a dielectric medium is solved using the Rytov approximation for the X-ray phase perturbation. It is shown that under appropriate limits the solution yields the equations for small-angle X-ray scattering, X-ray refraction and absorption. This demonstrates that the Rytov approximation provides a unified treatment of small-angle X-ray phenomena.
No takes yet. Share an insight, caveat, or question.
Timothy J. Davis (1994) studied this question.