Differential x-ray phase contrast imaging using a shearing interferometer

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Abstract

An x-ray interferometer has been developed that uses two transmission phase gratings to analyze wave front distortions in the hard x-ray range. The interferometer is insensitive to mechanical drift and vibrations, and it is tunable over a wide range of photon energies. This setup was used for differential phase contrast imaging of low-absorbing test objects. We obtained micrographs with moiré fringes of good visibility, which revealed the local phase shift gradient caused by the objects. A comparison with numerically simulated images indicates that quantitative analysis of unknown phase objects is possible. © 2002 American Institute of Physics.

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David, C., Nöhammer, B., Solak, H. H., & Ziegler, E. (2002). Differential x-ray phase contrast imaging using a shearing interferometer. Applied Physics Letters, 81(17), 3287–3289. https://doi.org/10.1063/1.1516611

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