Molybdenum-silicon multilayer monochromator for the extreme ultraviolet

Barbee, Troy W.; Pianetta, Piero; Redaelli, Renato; Tatchyn, Roman
June 1987
Applied Physics Letters;6/22/1987, Vol. 50 Issue 25, p1841
Academic Journal
A two-element molybdenum-silicon multilayer monochromator has been tested in the energy range 60–110 eV on a differentially pumped bending magnet beamline having a high-energy cutoff of 3.5 keV at the Stanford Synchrotron Radiation Laboratory. The multilayer structures were sputter deposited onto 5-cm-diam (111) single-crystal silicon and contained 20 molybdenum layers (4.93 nm thick) separated by amorphous silicon layers (7.8 nm thick). A 1200 l/mm gold transmission grating was used to independently measure the wavelength passed by the monochromator. The Al L2,3 absorption edge jump was also measured using the monochromator. These experimental results are compared to model calculations for both the synchrotron source-monochromator and the synchrotron source-monochromator-Al filter configurations and excellent agreement is shown.


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