title: A 9 keV electron-impact liquid-gallium-jet x-ray source.
abstract: We demonstrate a high-brightness compact 9 keV electron-impact microfocus x-ray source based on a liquid-gallium-jet anode. A approximately 30 W, 50 kV electron gun is focused onto the approximately 20 ms, 30 mum diameter liquid-gallium-jet anode to produce an approximately 10 microm full width at half maximum x-ray spot. The peak spectral brightness is >2 x 10(10) photons(s mm(2) mrad(2)x0.1% BW). Calculation and experiments show potential for increasing this brightness by approximately three orders of magnitude, making the source suitable for laboratory-scale x-ray crystallography and hard x-ray microscopy.
authors.affiliation: Biomedical and X-Ray Physics, Department of Applied Physics, Royal Institute of Technology/Albanova, SE-10691 Stockholm, Sweden. mikael.otenda@biox.kth.se
authors.forename: M
authors.initials: M
authors.lastname: Otendal
authors.forename: T
authors.initials: T
authors.lastname: Tuohimaa
authors.forename: U
authors.initials: U
authors.lastname: Vogt
authors.forename: H M
authors.initials: HM
authors.lastname: Hertz
mesh_terms: D004583:Electrons; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005708:Gallium / Q000528:radiation effects*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012996:Solutions; D017356:Synchrotrons / Q000295:instrumentation*; D014965:X-Rays
chemical_list: D012996:Solutions; D005708:Gallium