Numerical model for tomographic image formation in transmission x-ray microscopy
2011 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 19, no 12, p. 11578-11583Article 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, p. 11578-11583
Keywords [en]
RESOLUTION, SIMULATION
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-37275DOI: 10.1364/OE.19.011578ISI: 000292865500060PubMedID: 21716389Scopus ID: 2-s2.0-79958206915OAI: oai:DiVA.org:kth-37275DiVA, id: diva2:433124
Funder
Swedish Research Council
Note
QC 20110809
2011-08-092011-08-082022-09-15Bibliographically approved