Exploring spatial resolution enhancements on IMAT for steel corrosion studies

Neutron imaging offers benefits over X-rays for steel corrosion studies including deep penetration and high sensitivity to some light elements such as hydrogen. However, the resolution is frequently at or below the thickness of the corroded layer. This work demonstrates two approaches to enhance the spatial resolution on IMAT at the ISIS neutron source. The first approach shows that a fiber optics taper attached to an optical camera box for white beam imaging can achieve a spatial resolution down to 15 μm. The second approach uses event centroiding with a Timepix3-based detector for diffraction contrast imaging achieving a spatial resolution of 30 μm. These results support advances in corrosion and degradation studies of steel using neutron imaging.

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Publication Details

Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Published
2025-02-06
DOI
https://doi.org/10.1016/j.nima.2025.170284
Citations
4
Primary Topic
Non-Destructive Testing Techniques
Type
article
Field-Weighted Citation Impact
2.85

Funders

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article

Exploring spatial resolution enhancements on IMAT for steel corrosion studies

Vicky Ullas Mirashi, Adrian Losko, W. Kockelmann, Anton S. Tremsin et al.
4 citations
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Non-Destructive Testing Techniques
2.85
article

Exploring spatial resolution enhancements on IMAT for steel corrosion studies

Vicky Ullas Mirashi, Adrian Losko, W. Kockelmann, Anton S. Tremsin, Thawatchart Chulapakorn, Adriana Matamoros‐Veloza, Nikil Kapur, Alexander Wolfertz, Anna Fedrigo, Manuel Morgano
article en
4 citations

Abstract

Neutron imaging offers benefits over X-rays for steel corrosion studies including deep penetration and high sensitivity to some light elements such as hydrogen. However, the resolution is frequently at or below the thickness of the corroded layer. This work demonstrates two approaches to enhance the spatial resolution on IMAT at the ISIS neutron source. The first approach shows that a fiber optics taper attached to an optical camera box for white beam imaging can achieve a spatial resolution down to 15 μm. The second approach uses event centroiding with a Timepix3-based detector for diffraction contrast imaging achieving a spatial resolution of 30 μm. These results support advances in corrosion and degradation studies of steel using neutron imaging.

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated EquipmentVol. 1073
Rutherford Appleton Laboratory (GB), University of Leeds (GB), European Spallation Source (SE), Paul Scherrer Institute (CH), Heinz Maier-Leibnitz Zentrum (DE), Technical University of Munich (DE), University of California, Berkeley (US)
Bundesministerium für Bildung und Forschung, ISIS Neutron and Muon Source
Openalex Percentile: Top 11%
Non-Destructive Testing Techniques
2.85
DOIOpen Access PDFOpenAlex
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