Figure 4
Deflection of X-rays by the CRL. 2D map of deflection angles in the exit plane of a nine-lens CRL (a); data for every second point is shown, the lengths of the vectors are proportional to the magnitude of the deflection. The deviation of the measured angles from ideal values produced by a CRL with a perfect parabolic profile is plotted for stacks of five (b) and nine lenses (c). Cross and circle markers show results along lines in the meridional and sagittal planes of the CRL. Errors for angles estimated from µCT are shown as dotted lines; the noisiness of these curves stems from the discretization of the CRL's projected thickness as discussed in §2. |