New Phase-Sensitive Method of Single-Crystal Characterization under X-Ray Diffraction Conditions

Abstract
A new phase-sensitive method for crystal lattice strain determination is proposed. The phase of the diffracted x-ray wave can be obtained from direct measurements of backscattered intensity. For this purpose we design conditions for creating a standing x-ray wave in a vacuum between two separated crystals. The measurement of the intensity of this wave as a function of the angular position of the crystal makes it possible to uniquely determine the relative phase of the wave scattered by a crystal with a deformed lattice. The experimental setup and some preliminary results are discussed.