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Numerical model for tomographic image formation in transmission x-ray microscopy
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- Bertilson, Michael (author)
- KTH,Biomedicinsk fysik och röntgenfysik
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- von Hofsten, Olov (author)
- KTH,Biomedicinsk fysik och röntgenfysik
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- Hertz, Hans M. (author)
- KTH,Biomedicinsk fysik och röntgenfysik
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- 2011
- 2011
- English.
- In: Optics Express. - 1094-4087. ; 19:12, s. 11578-11583
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- RESOLUTION
- SIMULATION
- Optical physics
- Optisk fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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