title: Ti/Al multilayer zone plate and Bragg-Fresnel lens.
abstract: By using a helicon plasma sputtering technique, a one-dimensional Ti/Al multilayer zone plate with an outermost layer width of 76 nm has been successfully fabricated. A Bragg-Fresnel lens has been made by combining this zone plate with a Ge(422) crystal. Comparison of the Ti/Al multilayer zone plate with the Ag/Al zone plate is discussed in terms of focusing efficiency.
authors.affiliation: Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba-shi, Ibaraki 305, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Koike
authors.forename: I H
authors.initials: IH
authors.lastname: Suzuki
authors.forename: S
authors.initials: S
authors.lastname: Komiya
authors.forename: Y
authors.initials: Y
authors.lastname: Amemiya