Figure 5
X-ray film images of spot separations of the fundamental energy (7 keV) and of the higher-order diffraction (21 keV) after two diffraction events at two different separator-to-detector distances. The spatial separation between the two diffraction spots increases from 0.17 mm at a distance of 0.5 m to 0.34 mm at a distance of 1 m. At the bottom is a ray-trace simulation of a diffraction spot after two difraction events at a distance of 1 m. |