Vittoria, FA;
Kallon, GKN;
Basta, D;
Diemoz, PC;
Robinson, IK;
Olivo, A;
Endrizzi, M;
(2015)
Beam tracking approach for single-shot retrieval of absorption, refraction, and dark-field signals with laboratory x-ray sources.
APPLIED PHYSICS LETTERS
, 106
(22)
, Article 224102. 10.1063/1.4922189.
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Abstract
We present the translation of the beam tracking approach for x–ray phase–contrast and dark–field imaging, recently demonstrated using synchrotron radiation, to a laboratory setup. A single absorbing mask is used before the sample, and a local Gaussian interpolation of the beam at the detector is used to extract absorption, refraction, and dark–field signals from a single exposure of the sample. Multiple exposures can be acquired when high resolution is needed, as shown here. A theoretical analysis of the effect of polychromaticity on the retrieved signals, and of the artifacts this might cause when existing retrieval methods are used, is also discussed.
| Type: | Article |
|---|---|
| Title: | Beam tracking approach for single-shot retrieval of absorption, refraction, and dark-field signals with laboratory x-ray sources |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4922189 |
| Publisher version: | http://dx.doi.org/10.1063/1.4922189 |
| Additional information: | Copyright © 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4922189] |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1468893 |
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