Figure 3
Intensity from detector scans at 8.047 keV (Cu Kα) for Pt/C multilayers coated on (a) a fused silica substrate, (b) a 2 mm-thick SiO2 wafer and (c) a replica foil used for X-ray telescopes. Peaks marked `1' and `2' correspond to positions of Bragg maxima. Solid curves with filled squares are for the incident angle fixed at the first Bragg maxima. Dashed curves with open circles are with the incident angle fixed at 0.2° above the first Bragg maximum. These measurements were made with a proportional counter with a 0.3 mm slit and 0.2 mm-diameter incident beam. |