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Numerical model for tomographic image formation in transmission x-ray microscopy
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.ORCID iD: 0000-0003-2723-6622
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.ORCID iD: 0000-0002-4394-0591
2011 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 19, no 12, 11578-11583 p.Article in journal (Refereed) Published
Abstract [en]

We present a numerical image-formation model for investigating the influence of partial coherence, sample thickness and depth-of-focus on the accuracy of tomographic reconstructions in transmission x-ray microscopes. The model combines wave propagation through the object by finite difference techniques with Fourier methods. We include a ray-tracing model to analyse the origin of detrimental stray light in zone plate-based x-ray microscopes. These models allow optimization of x-ray microscopy systems for quantitative tomographic imaging of thick objects. Results show that both the depth-of-focus and the reconstructed local absorption coefficient are highly dependent on the degree of coherence of the optical system.

Place, publisher, year, edition, pages
2011. Vol. 19, no 12, 11578-11583 p.
Keyword [en]
RESOLUTION, SIMULATION
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-37275DOI: 10.1364/OE.19.011578ISI: 000292865500060Scopus ID: 2-s2.0-79958206915OAI: oai:DiVA.org:kth-37275DiVA: diva2:433124
Funder
Swedish Research Council
Note
QC 20110809Available from: 2011-08-09 Created: 2011-08-08 Last updated: 2017-12-08Bibliographically approved

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Hertz, Hans M.Vogt, Ulrich

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