X-ray phase-contrast radiography using a filtered white beam with a grating interferometer

V. Altapova, J. Butzer, T. D S Rolo, P. Vagovic, A. Cecilia, J. Moosmann, J. Kenntner, J. Mohr, D. Pelliccia, V. F. Pichugin, T. Baumbach

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

One of the most promising methods of phase-contrast imaging is the Talbot grating interferometry. We report about the optimization of the method for fast imaging, requiring reduced exposure times by keeping sufficient imaging contrast. To do this a new Talbot interferometer working with a broad energy bandwidth beam has been installed at the TopoTomo beamline at ANKA. We demonstrate the method with a filtered white beam and without the need of a source grating that is commonly used at moderate-emittance synchrotron sources. Taking advantage of a higher photon flux, the exposure time is significantly reduced. At the same time, images obtained with this setup show a sufficient visibility contrast of 25% on average, which opens the way for new applications in real-time measurements.

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Keywords

  • grating interferometry
  • Phase-contrast
  • X-ray imaging

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

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