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Title: X-ray grating interferometry with a liquid-metal-jet source

A liquid-metal-jet X-ray tube is used in an X-ray phase-contrast microscope based on a Talbot type grating interferometer. With a focal spot size in the range of a few microns and a photon flux of ∼10{sup 12} photons/s×sr, the brightness of such a source is approximately one order of magnitude higher than for a conventional microfocus source. For comparison, a standard microfocus source was used with the same grating interferometer, showing significantly increased visibility for the liquid-metal-jet arrangement. Together with the increased flux, this results in improved signal-to-noise ratio.
Authors:
; ;  [1] ;  [2] ; ; ; ;  [3] ;  [1]
  1. Paul Scherrer Institute, Villigen PSI (Switzerland)
  2. (Switzerland)
  3. Biomedical and X-Ray Physics, KTH Royal Institute of Technology, Albanova, SE-10691 Stockholm (Sweden)
Publication Date:
OSTI Identifier:
22218140
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; APPROXIMATIONS; BRIGHTNESS; COMPARATIVE EVALUATIONS; DIFFRACTION GRATINGS; INTERFEROMETERS; INTERFEROMETRY; JETS; LIQUID METALS; MICROSCOPES; MICROSCOPY; PHOTONS; SIGNAL-TO-NOISE RATIO; VISIBILITY; VISIBLE RADIATION; X RADIATION; X-RAY TUBES