Journal
OPTICS EXPRESS
Volume 25, Issue 20, Pages 24690-24704Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.024690
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Funding
- National Institutes of Health (NIH) [1R01CA193378]
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The beam hardening is one of the two causes of the fringe shift distortion in polychromatic X-ray grating interferometry. Based on the assumption of the uniform energy dependence, we developed a novel analytic approach to accurately retrieve the monochromatic attenuation function and fringe phase shift from the polychromatic measurement. This approach provides a useful tool for precise measurement of sample electron density distribution in X-ray grating interferometry. (C) 2017 Optical Society of America
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