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Phase imaging using highly coherent X-rays: radiography, tomography, diffraction topography.

J Baruchel1, P Cloetens, J Härtwig

  • 1ESRF, BP 220, 38043 Grenoble, France. baruchel@esrf.fr

Journal of Synchrotron Radiation
|April 13, 2006
PubMed
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Modern synchrotron sources enhance hard X-ray imaging. Coherent beams enable advanced phase imaging techniques like holotomography for detailed material analysis and defect detection.

Area of Science:

  • Physics
  • Materials Science
  • Imaging Science

Background:

  • Coherent hard X-ray beams from synchrotron sources significantly advance imaging techniques.
  • Phase imaging benefits from the small effective divergence of these sources, enabling high-resolution analysis.

Purpose of the Study:

  • To illustrate the benefits of coherent X-ray beams for various imaging techniques.
  • To showcase applications of phase radiography, tomography, and holotomography using synchrotron radiation.

Main Methods:

  • Utilized the ID19 imaging beamline at the European Synchrotron Radiation Facility (ESRF).
  • Employed propagation-based phase imaging techniques, including edge detection and quantitative holotomography.
  • Combined diffraction topography with phase-contrast imaging for advanced analysis.

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Main Results:

  • Demonstrated the simplicity and effectiveness of propagation techniques for phase radiography and tomography.
  • Showcased in situ damage assessment of micro-heterogeneous materials.
  • Achieved three-dimensional density mapping via holotomography and analyzed quasicrystals and ferroelectric materials.

Conclusions:

  • Coherent X-ray imaging techniques, particularly phase-based methods, offer powerful tools for materials characterization.
  • The combination of diffraction topography and phase imaging provides novel insights into material structures and defects.