Figure 4
Images of a monochromatic beam (a) without and (b) with a 1 mm-thick aluminium filter located at 30 m from the source show spurious images, which were removed by a further very accurate polishing; (c) magnified image of an oxidized part of the last aluminium filter, located in the experimental hutch at a distance of 143 m from the source and 2 m from the detector; X-ray wavelength 0.7 Å. |