title: Performance of a ruthenium beam separator used to separate soft x rays from light generated by a high-order harmonic light source.
abstract: We describe the design and fabrication of a ruthenium beam separator used to simultaneously attenuate infrared light and reflect soft x rays. Measurements in the infrared and soft x-ray regions showed the beam separator to have a reflectivity of 50%-85% in the wavelength region from 6 to 10 nm at a grazing incidence angle of 7.5 deg and 4.3% at 800 nm and the same angle of grazing incidence, indicating that the amount of attenuation is 0.05-0.09. These results show that this beam separator could provide an effective means for separating IR light from soft x rays in light generated by high-order harmonic generation sources.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ichimaru
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Hatayama
authors.forename: Tadayuki
authors.initials: T
authors.lastname: Ohchi
authors.forename: Eric M
authors.initials: EM
authors.lastname: Gullikson
authors.forename: Satoshi
authors.initials: S
authors.lastname: Oku