grazing-angle X-ray diffraction CHMO:0000919 glancing-incidence XRD grazing-angle incidence XRD glancing angle XRD grazing-incidence X-ray diffraction grazing angle X-ray diffraction GIXRD GID glancing-incidence X-ray diffraction grazing angle XRD GAXRD glancing incidence X-ray diffraction glancing incidence XRD glancing-angle X-ray diffraction grazing-incidence diffraction grazing incidence X-ray diffraction glancing-angle XRD grazing-incidence XRD A method for determining structure by directing a beam of X-rays at the sample and detecting the positions and intensities of the diffracted X-rays as a pattern of spots on a photographic plate. The incident X-ray beam strikes the sample at a small angle (<5°) close to the critical angle of total external X-ray reflection. grazing incidence XRD grazing-angle incidence X-ray diffraction grazing-angle XRD glancing angle X-ray diffraction small-angle X-ray diffraction