Design of stigmatic gratings for grazing incidence monochromator spectrographs

Details Design of stigmatic gratings for grazing incidence monochromator spectrographs Design of stigmatic gratings for grazing incidence monochromator spectrographs

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2805..169s&link_type=abstract

Proc. SPIE Vol. 2805, p. 169-174, Multilayer and Grazing Incidence X-Ray/EUV Optics III, Richard B. Hoover; Arthur B. Walker; Ed

Physics

Optics

Scientific paper

The best results on compensation of stigmatism in optical schemes of grazing incidence monochromators-spectrographs, based on Rowland Circle, have been obtained by simultaneous optimization of correlation between curvature radii in meridional and sagittal planes of illumination mirror and diffraction grating. In this scheme the grating should be installed in divergent pencil of beams for meridional plane and in convergent pencil of beams for sagittal plane. This pencil of beams is formed by additional concave mirror, installed in front of the entrance slit of spectrometer. This grating has a concave shape in meridional plane and a convex shape in sagittal plane. It has straight grooves. This kind of grating may be grooved mechanically.

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