Figure 7
Fit (red) of reflectivity data from pure water measured at 12.5 keV (blue) and 20 keV (green). In both cases a background `region of interest' has been subtracted (measured simultaneously). The inset shows the same data normalized to the Fresnel reflectivity. The fit parameters, background = 10−10 and roughness = 2.9 Å, were calculated using Motofit (Nelson, 2006). |