title: Transverse spatial coherence of a transient nickellike silver soft-x-ray laser pumped by a single picosecond laser pulse.
abstract: The degree of spatial coherence in the direction perpendicular to the target surface is reported for a transient nickellike silver x-ray laser at 13.9 nm. An x-ray laser plasma column was produced by irradiating a slab silver target with a single shaped picosecond laser pulse with energy less than 3 J. Young's double-slit method was applied to measure the fringe visibility as a function of the slit separation for different target lengths. The diameter of the equivalent incoherent source and the coherence radius of the output radiation were determined as well.
authors.affiliation: Max Born Institute, D-12489 Berlin, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Lucianetti
authors.forename: K A
authors.initials: KA
authors.lastname: Janulewicz
authors.forename: R
authors.initials: R
authors.lastname: Kroemer
authors.forename: G
authors.initials: G
authors.lastname: Priebe
authors.forename: J
authors.initials: J
authors.lastname: Tümmler
authors.forename: W
authors.initials: W
authors.lastname: Sandner
authors.forename: P V
authors.initials: PV
authors.lastname: Nickles
authors.forename: V I
authors.initials: VI
authors.lastname: Redkorechev