Abstract

The propagation of X-rays in an elastically deformed crystal has been studied using a ray-optical experimental arrangement. A single incident ray was selected from a Borrmann transmitted beam and was then diffracted through a thin crystal which was elastically strained by a temperature gradient. From the position and intensity of the rays at the exit surface it has been shown that for symmetric transmission, the plane wave boundary condition is maintained in any arbitrary but homogeneous strain field and that the migration of the tie points in good agreement with the theory.