Fig. 2
(a) Theoretical single-crystal hit rates for a liquid jet (here: dj=3.8 µm) delivery. The two X-ray beam sizes resulted from different nano-KB optics alignments, which provided beam sizes of 3.5 µm \(\times\) 3.5 µm (de-focused nano-KB mirrors, blue) and ca. 600 nm \(\times\) 600 nm (focused nano-KB mirrors, orange), respectively. The data is shown for a 0D Poisson point distribution. The red-dotted lines indicate the achieved 3.46% and 2.00% hit rates for ’Micro beam’ and ’Nano beam’ exposure on the HEWL1 sample (see Table 3), respectively, and are in good agreement with the actual probed crystal sizes (measured to be 2–4 µm via optical microscopy, see Fig. 12). (b) and (c) show images of a scintillating YAG:Ce crystal at the sample interaction region that were captured with the inline microscope during the respective X-ray focusing procedures.
