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- W2952312144 abstract "We report on a new x-ray imaging method, which combines the high spatial resolution of coherent diffraction imaging with the ability of dark field microscopy to map grains within thick polycrystalline specimens. An x-ray objective serves to isolate a grain and avoid overlap of diffraction spots. Iterative oversampling routines are used to reconstruct the shape and strain field within the grain from the far field intensity pattern. The limitation on resolution caused by the finite numerical aperture of the objective is overcome by the Fourier synthesis of several diffraction patterns. We demonstrate the method by an experimental study of a ~500 nm Pt grain for the two cases of a real and a virtual image plane. In the latter case the spatial resolution is 13 nm rms. Our results confirm that no information on the pupil function of the lens is required and that lens aberrations are not critical." @default.
- W2952312144 created "2019-06-27" @default.
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- W2952312144 date "2018-10-30" @default.
- W2952312144 modified "2023-10-18" @default.
- W2952312144 title "X-ray coherent diffraction imaging with an objective lens: towards 3D mapping of thick polycrystals" @default.
- W2952312144 hasPublicationYear "2018" @default.
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