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      X-ray phase imaging with a grating interferometer

      , , , , , ,

      Optics Express

      The Optical Society

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          Abstract

          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.

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          Author and article information

          Journal
          OPEXFF
          Optics Express
          Opt. Express
          The Optical Society
          1094-4087
          2005
          2005
          August 08 2005
          August 08 2005
          : 13
          : 16
          : 6296
          10.1364/OPEX.13.006296
          19498642
          © 2005

          Molecular medicine, Neurosciences

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