Single shot phase contrast imaging using laser-produced Betatron x-ray beams

Abstract : Development of x-ray phase contrast imaging applications with a laboratory scale source have been limited by the long exposure time needed to obtain one image. We demonstrate, using the Betatron x-ray radiation produced when electrons are accelerated and wiggled in the laser-wakefield cavity, that a high-quality phase contrast image of a complex object (here, a bee), located in air, can be obtained with a single laser shot. The Betatron x-ray source used in this proof of principle experiment has a source diameter of 1.7 μm and produces a synchrotron spectrum with critical energy Ec=12.3±2.5 keV and 109 photons per shot in the whole spectrum.
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Submitted on : Tuesday, June 16, 2015 - 2:39:42 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:03 AM

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S. Fourmaux, Sébastien Corde, Kim Ta Phuoc, P. Lassonde, G. Lebrun, et al.. Single shot phase contrast imaging using laser-produced Betatron x-ray beams. Optics Letters, Optical Society of America, 2011, 36 (13), pp. 2426-2428. ⟨10.1364/OL.36.002426⟩. ⟨hal-01164270⟩

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