Vittoria, FA;
Endrizzi, M;
Olivo, A;
(2017)
Retrieving the signal from ultra-small-angle x-ray scattering with polychromatic radiation in speckle-tracking and beam-tracking phase-contrast imaging.
Physical Review Applied
, 7
(3)
, Article 034024. 10.1103/PhysRevApplied.7.034024.
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Abstract
We present an experimental comparison between two x-ray phase contrast imaging techniques currently under development, speckle-tracking and beam-tracking. The comparison is centred on the absorption and ultra-small-angle scattering signals retrieved with polychromatic radiation from homogeneous and inhomogeneous samples of different thicknesses. Our analysis shows that the ultra-small-angle scattering signal retrieved with speckle-tracking does not increase linearly with the thickness for the inhomogeneous sample, and is different from zero for the homogeneous sample. The results obtained from beam-tracking, instead, are in good agreement with expectation.
| Type: | Article |
|---|---|
| Title: | Retrieving the signal from ultra-small-angle x-ray scattering with polychromatic radiation in speckle-tracking and beam-tracking phase-contrast imaging |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevApplied.7.034024 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevApplied.7.034024 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1543227 |
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