X-ray phase imaging with a grating interferometer

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


Published in:
Optics Express, 13, 16, 6296-6304
Year:
2005
ISSN:
1094-4087
Laboratories:




 Record created 2007-10-11, last modified 2018-01-28


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