Figure 5
FWHM of the refocused beam profile for (a) 6.8 keV and (b) 9.6 keV. (a) The results show a clearly astigmatic beam due to misaligned lenses in the horizontal leading to a weaker total parabolic shape and a weaker lens in the horizontal direction. (b) The reason for the significantly larger than expected size in the vertical direction is unclear. |