Combined analyser-based and propagation-based phase-contrast imaging of weak objects

Title
Combined analyser-based and propagation-based phase-contrast imaging of weak objects
Publication Date
2006
Author(s)
Nesterets, Yakov
Gureyev, Timur
( author )
OrcID: https://orcid.org/0000-0002-1103-0649
Email: tgureyev@une.edu.au
UNE Id une-id:tgureyev
Pavlov, Konstantin M
( author )
OrcID: https://orcid.org/0000-0002-1756-4406
Email: kpavlov@une.edu.au
UNE Id une-id:kpavlov
Paganin, David
Wilkins, S W
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Elsevier BV
Place of publication
Netherlands
DOI
10.1016/j.optcom.2005.08.055
UNE publication id
une:3562
Abstract
A new theoretical method combining analyser-based and propagation-based hard X-ray phase-contrast imaging is investigated. Unlike the previous theoretical model of the combined imaging method constructed under the assumption of slow variation of the individual transfer functions (large Fresnel numbers), a new model proposed in this paper uses the assumption of a weak scatterer (analogous to the first Born approximation). Consequently, the results are not limited to the case of short propagation distances or low-resolution imaging. An explicit expression for the combined transfer function is derived and analytical and numerical examples solving related inverse imaging problems are presented.
Link
Citation
Optics Communications, 259(1), p. 19-31
ISSN
1873-0310
0030-4018
Start page
19
End page
31

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