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|Title:||Combined analyser-based and propagation-based phase-contrast imaging of weak objects||Contributor(s):||Nesterets, Yakov (author); Gureyev, Timur (author) ; Pavlov, Konstantin M (author) ; Paganin, David (author); Wilkins, S W (author)||Publication Date:||2006||DOI:||10.1016/j.optcom.2005.08.055||Handle Link:||https://hdl.handle.net/1959.11/3474||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.||Publication Type:||Journal Article||Source of Publication:||Optics Communications, 259(1), p. 19-31||Publisher:||Elsevier BV||Place of Publication:||Amsterdam, The Netherlands||ISSN:||0030-4018||Field of Research (FOR):||020504 Photonics, Optoelectronics and Optical Communications||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 192
|Appears in Collections:||Journal Article|
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