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research article
X-ray phase imaging with a grating interferometer
2005
Using a high-efficiency grating interferometer for hard X rays (10-30 keV) and a phase-stepping technique, separate radiographs of the phase and absorption profiles of bulk samples can be obtained from a single set of measurements. Tomographic reconstruction yields quantitative three-dimensional maps of the X-ray refractive index, with a spatial resolution down to a few microns. The method is mechanically robust, requires little spatial coherence and monochromaticity, and can be scaled up to large fields of view, with a detector of correspondingly moderate spatial resolution. These are important prerequisites for use with laboratory X-ray sources
Type
research article
Authors
Publication date
2005
Published in
Volume
13
Issue
16
Start page
6296
End page
6304
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
October 11, 2007
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