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Figure 2
Absolute values of calculated image contrast of a phase object (no absorption, phase shift: 0.01 wavelength). It is assumed that the point-like phase plate decreases the optical path of undeviated X-rays by a quarter-wavelength, whereas the pinhole-like phase plate decreases deviated X-rays by a quarter-wavelength. Au and Al in the figure indicate the transmittances of the quarter-wavelength phase plate of these elements.

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ISSN: 1600-5775
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