Vamvakeros, A;
Coelho, AA;
Matras, D;
Dong, H;
Odarchenko, Y;
Price, SWT;
Butler, KT;
... Jacques, SDM; + view all
(2020)
DLSR: a solution to the parallax artefact in X-ray diffraction computed tomography data.
Journal of Applied Crystallography
, 53
(6)
pp. 1531-1541.
10.1107/s1600576720013576.
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Abstract
A new tomographic reconstruction algorithm is presented, termed direct least-squares reconstruction (DLSR), which solves the well known parallax problem in X-ray-scattering-based experiments. The parallax artefact arises from relatively large samples where X-rays, scattered from a scattering angle 2θ, arrive at multiple detector elements. This phenomenon leads to loss of physico-chemical information associated with diffraction peak shape and position (i.e. altering the calculated crystallite size and lattice parameter values, respectively) and is currently the major barrier to investigating samples and devices at the centimetre level (scale-up problem). The accuracy of the DLSR algorithm has been tested against simulated and experimental X-ray diffraction computed tomography data using the TOPAS software.
| Type: | Article |
|---|---|
| Title: | DLSR: a solution to the parallax artefact in X-ray diffraction computed tomography data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1107/s1600576720013576 |
| Publisher version: | http://dx.doi.org/10.1107/s1600576720013576 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | X-ray scattering; tomography; X-ray diffraction; XRD; wide-angle X-ray scattering; WAXS. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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 > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10116166 |
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