Abstract
A 2.2-m Rowland-circle grazing-incidence monochromator with a fixed entrance slit and a fixed grating, has been installed on the beamline BL8B1 at UVSOR, in which the axis of the monochromatized beam is unchanged for the wavelength scanning. Two gratings are interchangeable in vacuum. The designed useful region is 20–200 Å with a 2400/mm grating, but the actual useful region was 50–200 Å. At 100 Å, 1010/s output photons were obtained with a resolution of 10−3. The horizontal width of the beam at the sample position was about 5 mm, while the vertical width was between 0.5 and 3 mm.
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