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Deterministic Bragg Coherent Diffraction Imaging
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DOI：10.1038/s41598-017-01164-x.png)
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Abstract
En 中文
A deterministic variant of Bragg Coherent Diffraction Imaging is introduced in its kinematical approximation, for X-ray scattering from an imperfect crystal whose imperfections span no more than half of the volume of the crystal. This approach provides a unique analytical reconstruction of the object's structure factor and displacement fields from the 3D diffracted intensity distribution centred around any particular reciprocal lattice vector. The simple closed-form reconstruction algorithm, which requires only one multiplication and one Fourier transformation, is not restricted by assumptions of smallness of the displacement field. The algorithm performs well in simulations incorporating a variety of conditions, including both realistic levels of noise and departures from ideality in the reference (i.e. imperfection-free) part of the crystal.
Keywords:
X-RAY-DIFFRACTION
RECONSTRUCTION
STRAIN
HOLOGRAPHY
RETRIEVAL
INVERSION
CRYSTALS
FIELD
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