title: Wolter type I x-ray focusing mirror using multilayer coatings.
abstract: A multilayer coating is a useful addition to a mirror in the x-ray region and has been applied to normal incidence mirrors used with soft x rays. When a multilayer coating is used on grazing incidence optics, higher performance can be achieved than without it. Cr/Sc multilayers coated on a Wolter type I mirror substrate for a soft x-ray microscope are considered. The reflectivity and effective solid angle are calculated for Wolter type I mirrors with uniform and laterally graded multilayer coatings. The laterally graded multilayer mirror showed superior x-ray performance, and the multilayer tolerances were relaxed. This multilayer mirror could be especially useful in the soft x-ray microscope intended for biological applications.
authors.affiliation: Institute for Radiological Imaging Science, Wonkwang University, South Korea. kschon@wonkwang.ac.kr
authors.forename: Kwon Su
authors.initials: KS
authors.lastname: Chon
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Namba
authors.forename: Kwon-Ha
authors.initials: KH
authors.lastname: Yoon