Current status of 10-m GIM for soft x-ray undulator at the Photon Factory

Abstract

The current performance of a 10-m grazing incidence monochromator (GIM) is described. A resolution of 51, 95, and 220 meV (FWHM) has been achieved at 287, 401, and 867 eV, respectively, inferred from the linewidths for the K-shell resonances of gaseous CO, N2, and Ne. A photon flux of ≂1012 photons/s is obtainable at the first harmonic of undulator radiation with a 1200-ℓ /mm grating and 50-μm slit openings, which correspond to Δλ=0.04 Å.