A method for quality control of water-soluble single crystals by X-ray diffractometry under heating

摘要

For comparative quality control of crystals of the same material, a method is proposed in which the factor K = (I - I{sub}0)/I{sub}0 is taken as a measure of local perfection, where I{sub}0 is the initial integrated intensity of a selected diffraction peak of the crystal and I is the same intensity measured under mild heating conditions. The factor K, unlike the intensity I{sub}0, depends only slightly on the intensity of incident x-ray radiation. The crystal-averaged value of provides a measure of perfection of the crystal as a whole. The root-mean-square deviation <ΔK> characterizes the inhomogeneity of the crystal.