The University of Southampton
University of Southampton Institutional Repository

Simulations of x-ray speckle-based dark-field and phase-contrast imaging with a polychromatic beam

Simulations of x-ray speckle-based dark-field and phase-contrast imaging with a polychromatic beam
Simulations of x-ray speckle-based dark-field and phase-contrast imaging with a polychromatic beam
Following the first experimental demonstration of x-ray speckle-based multimodal imaging using a polychromatic beam [I. Zanette et al ., Phys. Rev. Lett. 112(25), 253903 (2014)], we present a simulation study on the effects of a polychromatic x-ray spectrum on the performance of this technique. We observe that the contrast of the near-field speckles is only mildly influenced by the bandwidth of the energy spectrum. Moreover, using a homogeneous object with simple geometry, we characterize the beam hardening artifacts in the reconstructed transmission and refraction angle images, and we describe how the beam hardening also affects the dark-field signal provided by speckle tracking. This study is particularly important for further implementations and developments of coherent speckle-based techniques at laboratory x-ray sources.
0021-8979
Zdora, Marie Christine
cea26261-9f86-4fa1-9122-2371a3818563
Thibault, Pierre
975a4c7b-6ca9-4958-b362-9eba10ab926b
Pfeiffer, Franz
90bfb684-c442-458c-8f10-64d0e89cbef1
Zanette, Irene
39ee899c-0aae-4fac-aec6-826f848a8022
Zdora, Marie Christine
cea26261-9f86-4fa1-9122-2371a3818563
Thibault, Pierre
975a4c7b-6ca9-4958-b362-9eba10ab926b
Pfeiffer, Franz
90bfb684-c442-458c-8f10-64d0e89cbef1
Zanette, Irene
39ee899c-0aae-4fac-aec6-826f848a8022

Zdora, Marie Christine, Thibault, Pierre, Pfeiffer, Franz and Zanette, Irene (2015) Simulations of x-ray speckle-based dark-field and phase-contrast imaging with a polychromatic beam. Journal of Applied Physics, 118 (11), [113105]. (doi:10.1063/1.4931145).

Record type: Article

Abstract

Following the first experimental demonstration of x-ray speckle-based multimodal imaging using a polychromatic beam [I. Zanette et al ., Phys. Rev. Lett. 112(25), 253903 (2014)], we present a simulation study on the effects of a polychromatic x-ray spectrum on the performance of this technique. We observe that the contrast of the near-field speckles is only mildly influenced by the bandwidth of the energy spectrum. Moreover, using a homogeneous object with simple geometry, we characterize the beam hardening artifacts in the reconstructed transmission and refraction angle images, and we describe how the beam hardening also affects the dark-field signal provided by speckle tracking. This study is particularly important for further implementations and developments of coherent speckle-based techniques at laboratory x-ray sources.

Text
1.4931145 - Version of Record
Available under License Creative Commons Attribution.
Download (2MB)

More information

Accepted/In Press date: 5 September 2015
Published date: 21 September 2015

Identifiers

Local EPrints ID: 431002
URI: http://eprints.soton.ac.uk/id/eprint/431002
ISSN: 0021-8979
PURE UUID: be93de62-0632-43e2-990a-8271e5c3f5b3
ORCID for Pierre Thibault: ORCID iD orcid.org/0000-0003-1278-8846

Catalogue record

Date deposited: 21 May 2019 16:30
Last modified: 16 Mar 2024 01:51

Export record

Altmetrics

Contributors

Author: Marie Christine Zdora
Author: Pierre Thibault ORCID iD
Author: Franz Pfeiffer
Author: Irene Zanette

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×