title: Compact x-ray microscope for the water window based on a high brightness laser plasma source.
abstract: We present a laser plasma based x-ray microscope for the water window employing a high-average power laser system for plasma generation. At 90 W laser power a brightness of 7.4 x 10(11) photons/(s x sr x μm(2)) was measured for the nitrogen Lyα line emission at 2.478 nm. Using a multilayer condenser mirror with 0.3 % reflectivity 10(6) photons/(μm(2) x s) were obtained in the object plane. Microscopy performed at a laser power of 60 W resolves 40 nm lines with an exposure time of 60 s. The exposure time can be further reduced to 20 s by the use of new multilayer condenser optics and operating the laser at its full power of 130 W.
authors.affiliation: Max-Born-Institut, Max-Born-Str. 2A, D-12489 Berlin, Germany. legall@mbi-berlin.de
authors.forename: H
authors.initials: H
authors.lastname: Legall
authors.forename: G
authors.initials: G
authors.lastname: Blobel
authors.forename: H
authors.initials: H
authors.lastname: Stiel
authors.forename: W
authors.initials: W
authors.lastname: Sandner
authors.forename: C
authors.initials: C
authors.lastname: Seim
authors.forename: P
authors.initials: P
authors.lastname: Takman
authors.forename: D H
authors.initials: DH
authors.lastname: Martz
authors.forename: M
authors.initials: M
authors.lastname: Selin
authors.forename: U
authors.initials: U
authors.lastname: Vogt
authors.forename: H M
authors.initials: HM
authors.lastname: Hertz
authors.forename: D
authors.initials: D
authors.lastname: Esser
authors.forename: H
authors.initials: H
authors.lastname: Sipma
authors.forename: J
authors.initials: J
authors.lastname: Luttmann
authors.forename: M
authors.initials: M
authors.lastname: Höfer
authors.forename: H D
authors.initials: HD
authors.lastname: Hoffmann
authors.forename: S
authors.initials: S
authors.lastname: Yulin
authors.forename: T
authors.initials: T
authors.lastname: Feigl
authors.forename: S
authors.initials: S
authors.lastname: Rehbein
authors.forename: P
authors.initials: P
authors.lastname: Guttmann
authors.forename: G
authors.initials: G
authors.lastname: Schneider
authors.forename: U
authors.initials: U
authors.lastname: Wiesemann
authors.forename: M
authors.initials: M
authors.lastname: Wirtz
authors.forename: W
authors.initials: W
authors.lastname: Diete