Dual conical shell illumination for volumetric high-energy X-ray diffraction imaging

Dicken, A. ORCID: 0000-0002-0558-3773, Spence, D., Rogers, K., Prokopiou, D. and Evans, P.O. ORCID: 0000-0001-9831-1461, 2018. Dual conical shell illumination for volumetric high-energy X-ray diffraction imaging. The Analyst. ISSN 0003-2654

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Abstract

To retrieve crystallographic information from extended sample volumes requires a high-energy probe. The use of X-rays to combine imaging with materials characterisation is well-established. However, if fundamental crystallographic parameters are required, then the collection and analysis of X-rays diffracted by the inspected samples are prerequisites. We present a new X-ray diffraction imaging architecture, which in comparison with previous depth-resolving hollow beam techniques requires significantly less X-ray power or alternatively supports significantly increased scanning speeds. Our conceptual configuration employs a pair of conical shell X-ray beams derived from a single point source to illuminate extended samples. Diffracted flux measurements would then be obtained using a pair of energy resolving point detectors. This dual beam configuration is tested using a single X-ray beam set-up employing a dual scan. The use of commercial off-the-shelf low-cost components has the potential to provide rapid and cost-effective performance in areas including industrial process control, medical imaging and explosives detection.

Item Type: Journal article
Publication Title: The Analyst
Creators: Dicken, A., Spence, D., Rogers, K., Prokopiou, D. and Evans, P.O.
Publisher: Royal Society of Chemistry
Date: 13 September 2018
ISSN: 0003-2654
Identifiers:
NumberType
10.1039/c8an01537fDOI
Divisions: Schools > School of Science and Technology
Depositing User: Linda Sullivan
Date Added: 19 Sep 2018 10:57
Last Modified: 13 Sep 2019 03:00
URI: http://irep.ntu.ac.uk/id/eprint/34521

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