A simple monochromator based on x‐ray multilayer mirrors

A simple two‐mirror monochromator based on multilayer films has been developed as a part of a reflectometer under construction at the University of Wisconsin Synchrotron Radiation Center. Measurements of the performance of this monochromator and the characterization of a typical component mirror have been made. At AlKα the monochromator has a peak transmission of 9%, which is 55% of the theoretical value. Its resolution, λ/Δλ, is 35.