title: Submicrometer hard X-ray focusing using a single-bounce ellipsoidal capillary combined with a Fresnel zone plate.
abstract: A single-bounce capillary with an ellipsoidal shape has been used for two-step focusing in combination with a Fresnel zone plate (FZP). The FZP serves as a first microfocusing element and produces a demagnified micrometer image of the source, before the elliptical capillary makes a last final compression of the beam. With 15 keV X-rays from the European Synchrotron Radiation Facility BM5 bending magnet, the two-step demagnification system produced a focus of about 250 nm with a gain of more than 1000. The use of an ellipsoidal capillary as a micro-mirror under off-axis illumination using micro-prefocusing optics might open up new opportunities in nanofocusing developments.
authors.affiliation: European Synchrotron Radiation Facility, 6 rue Jules Horowitz, 38043 Grenoble, France. snigirev@esrf.fr
authors.forename: A
authors.initials: A
authors.lastname: Snigirev
authors.forename: A
authors.initials: A
authors.lastname: Bjeoumikhov
authors.forename: A
authors.initials: A
authors.lastname: Erko
authors.forename: I
authors.initials: I
authors.lastname: Snigireva
authors.forename: M
authors.initials: M
authors.lastname: Grigoriev
authors.forename: V
authors.initials: V
authors.lastname: Yunkin
authors.forename: M
authors.initials: M
authors.lastname: Erko
authors.forename: S
authors.initials: S
authors.lastname: Bjeoumikhova