Annular beam X-ray imaging

Godber, SX, 2014. Annular beam X-ray imaging. PhD, Nottingham Trent University.

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Abstract

This thesis presents an investigation of depth‐resolved absorption imaging by scanning objects through an annular beam of X‐rays. The resultant ring shaped projections record depth dependent parallax. The study focuses on two different scanning methods. First, a single axis scan has been employed to record curvilinear stereoscopic images. Second, a two axis raster scanning approach enables focal plane images to be produced via tomosynthesis. These novel absorption contrast methods have been carefully designed to complement X-ray diffraction considerations. Prior work employing an annular beam concerned the collection of X­ray diffraction data for structural analysis/phase identification. This method, termed Focal Construct Geometry (FCG), provided orders of magnitude increase in the intensity of the diffracted X-rays within the beam’s dark interior to enable rapid processing. However, this work relied upon a priori sample position. The research presented in this thesis establishes a complementary absorption imaging modality, which is designed to support and inform the analysis of the diffraction data by providing quantitative spatial information.

Item Type: Thesis
Description: The full text of this thesis is not available due to restrictions placed by the author, use of copyrighted material, or patents pending. This research programme was carried out in collaboration with the Cranfield Forensic Institute, Cranfield University.
Creators: Godber, S.X.
Date: 2014
Rights: This work is the intellectual property of the author. You may copy up to 5% of this work for private study, or personal, non-commercial research. Any re-use of the information contained within this document should be fully referenced, quoting the author, title, university, degree level and pagination. Queries or requests for any other use, or if a more substantial copy is required, should be directed to the owner(s) of the Intellectual Property Rights.
Divisions: Schools > School of Science and Technology
Depositing User: EPrints Services
Date Added: 09 Oct 2015 09:52
Last Modified: 15 Feb 2016 14:53
URI: http://irep.ntu.ac.uk/id/eprint/4009

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