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. 2012 Jun 13;109(26):10199-10204. doi: 10.1073/pnas.1117861109

Fig. 1.

Fig. 1.

Schematic representation of an X-ray grating interferometer setup. The phase grating (G1) and the absorption grating (G2) are positioned between the sample and the detector. G2 is placed at a distance d from G1 at which the interference pattern generated by G1 exhibits the maximum contrast.