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Published online by Cambridge University Press: 06 March 2019
The most familiar result from X-ray analysis is a spectrum (on a chart recording or on film), or perhaps a short list of values (concentrations, d-spacings, etc.) taken from such a spectrum. X-ray pictures are usually associated in our minds with the hospital emergency room or the dentist's office. But images formed by X-rays are also an important tool to study materials' structures. Both conventional and unconventional uses of X-rays to study structural and compositional inhomogeneities find widespread application to materials. Applications include characterization of surface topography and composition variation, as well as internal structure. The methods make use of all types of X-ray interaction with materials, including Bragg diffraction and the fluorescence of characteristic X-rays, as well as simple X-ray attenuation due to absorption and scattering.