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Huaiyu Chen

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Correcting angular distortions in Bragg coherent X-ray diffraction imaging

Author

  • Huaiyu Chen
  • Dmitry Dzhigaev
  • Alexander Björling
  • Fabian Westermeier
  • Mikhail Lyubomirskiy
  • Michael Stuckelberger
  • Jesper Wallentin

Summary, in English

Bragg coherent X-ray diffraction imaging (BCDI) has emerged as a powerful technique for strain imaging and morphology reconstruction of nanometre-scale crystals. However, BCDI often suffers from angular distortions that appear during data acquisition, caused by radiation pressure, heating or imperfect scanning stages. This limits the applicability of BCDI, in particular for small crystals and high-flux X-ray beams. Here, we present a pre-processing algorithm that recovers the 3D datasets from the BCDI dataset measured under the impact of large angular distortions. We systematically investigate the performance of this method for different levels of distortion and find that the algorithm recovers the correct angles for distortions up to 16.4× (1640%) the angular step size dθ = 0.004°. We also show that the angles in a continuous scan can be recovered with high accuracy. As expected, the correction provides marked improvements in the subsequent phase retrieval.

Department/s

  • LU Profile Area: Light and Materials
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • eSSENCE: The e-Science Collaboration
  • NanoLund: Centre for Nanoscience
  • Synchrotron Radiation Research
  • LTH Profile Area: Photon Science and Technology
  • MAX IV Laboratory

Publishing year

2024-09-01

Language

English

Pages

1308-1316

Publication/Series

Journal of Synchrotron Radiation

Volume

31

Issue

Pt 5

Document type

Journal article

Publisher

International Union of Crystallography

Topic

  • Medical Imaging
  • Atom and Molecular Physics and Optics

Keywords

  • angular corrections
  • angular distortions
  • angular uncertainty
  • BCDI
  • Bragg coherent X-ray diffraction imaging
  • nanoscale particles
  • phase-retrieved objects

Status

Published

ISBN/ISSN/Other

  • ISSN: 0909-0495