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dc.contributor.authorRamadhan, R-
dc.contributor.authorKockelmann, W-
dc.contributor.authorMinniti, T-
dc.contributor.authorChen, B-
dc.contributor.authorParfitt, D-
dc.contributor.authorFitzpatrick, M-
dc.contributor.authorTremsin, A-
dc.identifier.citationJournal of Applied Crystallography, 2019, 52, pp. 351-368en
dc.description.abstractThis paper presents a series of experiments to characterize the performance of the new IMAT beamline at the ISIS pulsed neutron source and provides examples to showcase the potential applications of Bragg-edge transmission imaging on the instrument. The characterization includes determination of the IMAT spectral and spatial resolutions through calibration measurements, and also determination of the precision and the accuracy of Bragg-edge analysis for lattice parameters of ceramics, metals and textured engineering alloys through high-temperature measurements. A novel Bragg-edge analysis method based on the cross-correlation of different Bragg edges has been developed to provide an estimate of the change in lattice parameter, which is especially useful for measurements of textured samples. Three different applications of the Bragg-edge transmission imaging technique are presented, including strain mapping, texture mapping and obtaining crystallographic information, i.e. the dependence on temperature of the Debye–Waller factor. The experimental results demonstrate the ability of the IMAT beamline to provide accurate strain measurements with uncertainties as low as 90 µ[epsilon] with reasonable measurement time, while characteristic materials parameters can be mapped across the sample with a spatial resolution of 300–600 µm for a strain map and down to ∼90 µm for a texture map.en
dc.description.sponsorshipThe authors are grateful for the provision of beam time at ENGIN-X, ISIS (RB1720411), and would like to thank Dr Saurabh Kabra and Dr Tung Lik Lee for support during the experiment. Funding information RSR is supported by a Facility Development Studentship from the UK Science and Technology Facilities Council (STFC). MEF is grateful for funding from the Lloyd’s Register Foundation, a charitable foundation helping to protect life and property by supporting engineering-related education, public engagement and the application of research.en
dc.publisherInternational Union of Crystallography, Wileyen
dc.rightsCopyright © 2019, International Union of Crystallography, Wiley. Deposited with reference to the publisher’s open access archiving policy. (
dc.subjectneutron imagingen
dc.subjectBragg edgesen
dc.subjectstrain mappingen
dc.subjectcrystallographic texture mappingen
dc.titleCharacterization and application of Bragg-edge transmission imaging for strain measurement and crystallographic analysis on the IMAT beamlineen
dc.typeJournal Articleen
dc.description.versionPublisher Versionen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERINGen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineeringen
Appears in Collections:Published Articles, Dept. of Engineering

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