The influence of strain on image reconstruction in Bragg coherent X-ray diffraction imaging and ptychography
open access.
| Veröffentlicht in: | Journal of synchrotron radiation. - 1994. - 28(2021), Pt 4 vom: 01. Juli, Seite 1159-1165 |
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| Weitere Verfasser: | , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2021
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| Zugriff auf das übergeordnete Werk: | Journal of synchrotron radiation |
| Schlagworte: | Journal Article Bragg ptychography anti-phase domain boundary coherent X-ray diffraction imaging modulus homogenization strong phase object |
| Zusammenfassung: | open access. A quantitative analysis of the effect of strain on phase retrieval in Bragg coherent X-ray diffraction imaging is reported. It is shown in reconstruction simulations that the phase maps of objects with strong step-like phase changes are more precisely retrieved than the corresponding modulus values. The simulations suggest that the reconstruction precision for both phase and modulus can be improved by employing a modulus homogenization (MH) constraint. This approach was tested on experimental data from a highly strained Fe-Al crystal which also features antiphase domain boundaries yielding characteristic π phase shifts of the (001) superlattice reflection. The impact of MH is significant and this study outlines a successful method towards imaging of strong phase objects using the next generation of coherent X-ray sources, including X-ray free-electron lasers |
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| Beschreibung: | Date Revised 07.11.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1600-5775 |
| DOI: | 10.1107/S160057752100477X |