Depth resolved snapshot energy-dispersive X-ray diffraction using a conical shell beam

Dicken, A.J., Evans, J.P.O. ORCID: 0000-0001-9831-1461, Rogers, K.D., Prokopiou, D., Godber, S.X. and Wilson, M., 2017. Depth resolved snapshot energy-dispersive X-ray diffraction using a conical shell beam. Optics Express, 25 (18), pp. 21321-21328. ISSN 1094-4087

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Abstract

We demonstrate a novel imaging architecture to collect range encoded diffraction patterns from overlapping samples in a single conical shell projection. The patterns were measured in the dark area encompassed by the beam via a centrally positioned aperture optically coupled to a pixelated energy-resolving detector. We show that a single exposure measurement of 0.3 mAs enables d-spacing values to be calculated. The axial positions of the samples were not required and the resultant measurements were robust in the presence of crystallographic textures. Our results demonstrate rapid volumetric materials characterization and the potential for a direct imaging method, which is of great relevance to applications in medicine, non-destructive testing and security screening.

Item Type: Journal article
Publication Title: Optics Express
Creators: Dicken, A.J., Evans, J.P.O., Rogers, K.D., Prokopiou, D., Godber, S.X. and Wilson, M.
Publisher: Optical Society of America
Date: September 2017
Volume: 25
Number: 18
ISSN: 1094-4087
Identifiers:
NumberType
10.1364/OE.25.021321DOI
Divisions: Schools > School of Science and Technology
Depositing User: Linda Sullivan
Date Added: 17 Oct 2017 13:22
Last Modified: 17 Oct 2017 13:22
URI: http://irep.ntu.ac.uk/id/eprint/31825

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