title: Ultrashort 1-kHz laser plasma hard x-ray source.
abstract: We achieved a continuous, stable, ultrashort pulse hard x-ray point source by focusing 1.8-W, 1-kHz, 50-fs laser pulses onto a novel, 30-microm -diameter, high-velocity, liquid-metal gallium jet. This target geometry avoids most of the debris problems of solid targets and provides nearly 4pi illumination. Photon fluxes of 5x10(8) photons/s are generated in a two-component spectrum consisting of a broad continuum from 4 to 14 keV and strong K(alpha) and K(beta) emission lines at 9.25 and 10.26 keV. This source will find wide use in time-resolved x-ray diffraction studies and other applications.
authors.forename: Georg
authors.initials: G
authors.lastname: Korn
authors.forename: Andreas
authors.initials: A
authors.lastname: Thoss
authors.forename: Holger
authors.initials: H
authors.lastname: Stiel
authors.forename: Ullrich
authors.initials: U
authors.lastname: Vogt
authors.forename: Martin
authors.initials: M
authors.lastname: Richardson
authors.forename: Thomas
authors.initials: T
authors.lastname: Elsaesser
authors.forename: Manfred
authors.initials: M
authors.lastname: Faubel