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Figure 6
The solid line shows the effective aperture aeff of the grating beam path in the first (green line) and second (red line) diffraction order. The focusing property of CM1 increases the nominal aperture anom of the grating (dashed lines) by a factor of 1.38. The nominal aperture is dependent on the angle of incidence on the gratings α (blue and magenta lines) and its clear length of 150 mm. |