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Experimental full width at half maximum (FWHM) of the elastic scattering peaks with the diced-and-bent Si(440). Data for 5 mm and 1 mm slits in front of the SDD detector are shown. Also, a representative value for a conventional bent analyzer (non-diced) of 100 mm diameter is given with and without masking its outermost 25 mm along the dispersive direction.
