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Figure 6
A summary of the performance of two different multilayer laminar gratings is presented. In (a) the peak grating efficiencies of the two gratings are plotted as a function of energy, while in (b) the corresponding values of cff are plotted versus energy. Solid lines are simulations performed in MLgrating, while the dashed lines were found using software developed at Tongji University based on RETICOLO. Both multilayer gratings are Cr/C multilayers on a silicon grating. The H = 7.5 nm grating is the same as that presented in Fig. 5[link], while the other grating is identical apart from H and Γ which are 6.7 nm and 0.67, respectively.

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