Figure 6
Optimization of the grating parameters for the 2000 lines/mm grating in the first diffraction order. Transmission of the PM and grating pair R2 over the energy interval 700–1200 eV, average 〈R2〉 (a) and relative variation 〈ΔR2〉/〈R2〉 (b). The crossing planes show the position of their maximum and minimum, respectively. The optimal values of h and c/d are chosen slightly shifted from the exact transmission maximum to improve the flatness of the energy dependence. |