Author/Authors :
de Jonge، نويسنده , , Martin D. and Vogt، نويسنده , , Stefan and Legnini، نويسنده , , Daniel and McNulty، نويسنده , , Ian and Rau، نويسنده , , Christoph and Paterson، نويسنده , , David and Hornberger، نويسنده , , Benjamin and Holzner، نويسنده , , Jens Christian Brings Jacobsen، نويسنده , , Chris، نويسنده ,
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 - μ m -diameter gold sphere at 7-keV photon energy.
Keywords :
Differential phase contrast , Configured detector , phase retrieval , STXM
