title: Graded X-ray Optics for Synchrotron Radiation Applications.
abstract: Using X-ray diffractometry and spectral measurements, the structure and properties of graded X-ray optical elements have been examined. Experimental and theoretical data on X-ray supermirrors, which were prepared by the magnetron sputtering technique using precise thickness control, are reported. Measurements on graded aperiodic Si(1-x)Ge(x) single crystals, which were grown by the Czochralski technique, are also presented. The lattice parameter of such a crystal changes almost linearly with increasing Ge concentration. The measurements indicate that Si(1-x)Ge(x) crystals with concentrations up to 7 at.% Ge can be grown with a quality comparable to that of pure Si crystals.
authors.affiliation: Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung (BESSY) mbH, Lentzeallee 100, D-14195 Berlin, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Erko
authors.forename: M
authors.initials: M
authors.lastname: Veldkamp
authors.forename: W
authors.initials: W
authors.lastname: Gudat
authors.forename: N V
authors.initials: NV
authors.lastname: Abrosimov
authors.forename: S N
authors.initials: SN
authors.lastname: Rossolenko
authors.forename: V
authors.initials: V
authors.lastname: Shekhtman
authors.forename: S
authors.initials: S
authors.lastname: Khasanov
authors.forename: V
authors.initials: V
authors.lastname: Alex
authors.forename: S
authors.initials: S
authors.lastname: Groth
authors.forename: W
authors.initials: W
authors.lastname: Schröder
authors.forename: B
authors.initials: B
authors.lastname: Vidal
authors.forename: A
authors.initials: A
authors.lastname: Yakshin