title: Capped Mo/Si multilayers with improved performance at 30.4 nm for future solar missions.
abstract: Novel capping layer structures have been deposited on periodic Mo/Si multilayers to optimize reflectance at 30.4 nm. Design, deposition and characterization of such coatings are presented. Most of the structures proposed show improved performance with respect to standard Mo/Si multilayers and are stable over time. Reflectance at 121.6 nm and in the visible spectral range have been also tested to explore the applicability of such coatings to the Multi Element Telescope for Imaging and Spectroscopy (METIS) instrument, a coronagraph being developed for the ESA Solar Orbiter platform.
authors.affiliation: CNR – Institute for Photonics and Nanotechnologies LUXOR Lab, via Trasea 7, 35131 Padova, Italy. corsoala@dei.unipd.it
authors.forename: Alain Jody
authors.initials: AJ
authors.lastname: Corso
authors.forename: Paola
authors.initials: P
authors.lastname: Zuppella
authors.forename: Piergiorgio
authors.initials: P
authors.lastname: Nicolosi
authors.forename: David L
authors.initials: DL
authors.lastname: Windt
authors.forename: E
authors.initials: E
authors.lastname: Gullikson
authors.forename: Maria Guglielmina
authors.initials: MG
authors.lastname: Pelizzo