Nesterets, Yakov

Gureyev, Timur

Pavlov, Konstantin M

Paganin, David

Wilkins, S W

2006

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.

Optics Communications, 259(1), p. 19-31

1873-0310

0030-4018

https://hdl.handle.net/1959.11/3474

Elsevier BV

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

Journal Article

Publication