DYNAMICAL-APPROACH FOR X-RAY-DIFFRACTION FROM SURFACES AND INTERFACES - INTERPRETATION OF CRYSTAL TRUNCATION ROD USING DYNAMICAL THEORY

[[abstract]]X-ray diffraction from crystal surfaces and interfaces is described within the framework of the dynamical theory. The intensity distributions of specular and non-specular crystal truncation rods are interpreted with this dynamical approach. Difficulties encountered in the ordinary dynamical calculation for these rods are mentioned and the details of the numerical calculation procedure which overcomes the difficulties are given. The coordinates of dispersion surface, linear absorption coefficients and mode excitations of surface diffractions are calculated and the validity of this dynamical approach is discussed.[[fileno]]2010105010014[[department]]物理