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Deterministic Bragg Coherent Diffraction Imaging.

ABSTRACT: 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.

SUBMITTER: Pavlov KM

PROVIDER: S-EPMC5430781 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Deterministic Bragg Coherent Diffraction Imaging.

Pavlov Konstantin M KM Punegov Vasily I VI Morgan Kaye S KS Schmalz Gerd G Paganin David M DM

Scientific reports 20170425 1

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, whi ...[more]

PMID: 28442775

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