Km. Skulina et al., MOLYBDENUM BERYLLIUM MULTILAYER MIRRORS FOR NORMAL INCIDENCE IN THE EXTREME-ULTRAVIOLET, Applied optics, 34(19), 1995, pp. 3727-3730
We report on a series of normal-incidence reflectance measurements at
wavelengths just longer than the beryllium K-edge (11.1 nm) from molyb
denum/beryllium multilayer mirrors. The highest peak reflectance was 6
8.7 +/- 0.2% at lambda = 11.3 nm obtained from a mirror with 70 bilaye
rs ending in beryllium. To our knowledge, this is the highest normal-i
ncidence reflectance that has been demonstrated in the 1-80-nm spectra
l range.