Abstract
X-ray refraction contrast in one-dimensional images of a copper wire, 75 μm in diameter, and a human hair was observed using a W/C multilayer mirror with resonant absorption at CuK α radiation. The multilayer structure consisting of 25 bilayers was designed for CuK α radiation so as to have narrow absorbing resonance at a grazing angle of 0.9°. A monochromatic probe X-ray beam with a divergence of approximately 7 arc s was obtained from a conventional X-ray tube and a double crystal monochromator set in a strongly dispersive configuration. This result proves the feasibility of X-ray refraction radiography using resonantly absorbing multilayer mirrors manufactured by conventional magnetron sputtering technology.
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