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 language | English |
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Pages (from-to) | 9233-9251 |
Number of pages | 19 |
Journal | Optics Express |
Volume | 23 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Apr 6 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics