Effects of unresolvable edges in grating-based X-ray differential phase imaging

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39 Citations (Scopus)

Abstract

We investigated effects of unresolvable sharp edges on images obtained in a grating-based X-ray differential phase imaging technique. Results of numerical calculations for monochromatic X-rays show that an unresolvable sharp edge generates not only differential-phase contrast but also visibility contrast. The latter shows that the visibility contrast has another major origin other than ultra-small-angle X-ray scattering (USAXS) from randomly distributed unresolvable microstructures, which has been considered the main origin for the contrast. The effects were experimentally confirmed using a synchrotron X-ray source.

Original languageEnglish
Pages (from-to)9233-9251
Number of pages19
JournalOptics Express
Volume23
Issue number7
DOIs
Publication statusPublished - 2015 Apr 6

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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