Figure 6
Reflection map of the conical analyzer crystal. The integrated energy spectrum on the detector is plotted horizontally, the maximum of the Kα signal is aligned to pixel 74. The crystal surface is scanned with the direct beam of the X-ray source anode (mostly the Cu Kα double peak). The vertical axis shows the relative shift of the analyzer crystal along its nodal line (thus it represents the segment of the crystal where the Cu Kα peaks are reflected). The diverging peak pairs from both bottom and top show an extra reflection from the edge of the analyzer (see text). |