A high-intensity grazing-incidence X-ray diffractometer system, which uses a parabolic graded multilayer mirror and an 18-kW rotating-anode generator, has recently been developed for the structural characterization of surfaces and thin film~. Its goniometer has two in-plane tp/20 x axes and two conventional m¢20 axes for measurements of in-plane and out-of-plane diffraction, respectively. The d...