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New simple setup for X-ray phase contrast
Date:7/11/2014

d a liquid metal jet as the X-ray-producing target instead of the solid targets normally used in laboratory X-ray sources," says Tunhe Zhou from KTH Stockholm, project partner of the TUM. "This makes it possible to gain the high intensity needed for phase-contrast imaging without damaging the X-ray-producing target." To obtain all images at once, an algorithm scans the speckles and analyzes the minute changes in their shape and position caused by the specimen.

But not all components of the new instrument are products of the latest cutting-edge technology. To scramble the X-rays, "we have found that a simple piece of sandpaper did the job perfectly well," adds Dr. Zanette.

The researchers are already working toward the next steps. "As a single-shot technique, speckle imaging is a perfect candidate for an efficient extension to phase-contrast tomography, which would give a three-dimensional insight into the microstructure of the investigated object," Zanette explains.


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Contact: Vera Siegler
vera.siegler@tum.de
49-892-892-2731
Technische Universitaet Muenchen
Source:Eurekalert

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