A method for phase reconstruction from measurements obtained using a configured detector with a scanning transmission X-ray microscope |
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Authors: | de Jonge Martin D Vogt Stefan Legnini Daniel McNulty Ian Rau Christoph Paterson David Hornberger Benjamin Holzner Christian Jacobsen Chris |
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Affiliation: | Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4856, USA. |
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Abstract: | We developed a technique for performing quantitative phase reconstructions from differential phase contrast images obtained using a configured detector in a scanning transmission X-ray microscope geometry. The technique uses geometric optics to describe the interaction of the X-ray beam with the specimen, which allows interpretation of the measured intensities in terms of the derivative of the phase thickness. Integration of the resulting directional derivatives is performed using a Fourier integration technique. We demonstrate the approach by reconstructing simulated measurements of a 0.5-μm-diameter gold sphere at 7-keV photon energy. |
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