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High-Resolution Neu...
High-Resolution Neutron Counting Sensor in Strain Mapping Through Transmission Bragg Edge Diffraction
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Tremsin, A. S. (author)
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McPhate, J. B. (author)
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Vallerga, J. V. (author)
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Siegmund, O. H. W. (author)
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Kockelmann, W. (author)
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- Steuwer, Axel (author)
- Lund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities
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Feller, W. B. (author)
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: IEEE Sensors Journal. - 1558-1748. ; 11:12, s. 3433-3436
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Subject headings
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- High-resolution neutron counting sensors with microchannel plates coupled to a Timepix readout enable high spatial (similar to 55 mu m) and temporal (similar to 1 mu s) accuracy for each detected thermal and cold neutron. One of the attractive applications for those sensors is the high-resolution strain mapping in engineering samples through transmission Bragg edge diffraction. The unique combination of high detection efficiency (up to 70%), high spatial and temporal resolution of, detectors enable similar to 100 mu m strain mapping with similar to 100 mu strain accuracy. We present the results of proof of principle measurements performed at ROTAX beamline at ISIS spallation neutron source. Strain map of a bent steel sample is measured with very high spatial resolution. The same sensors enable high-resolution nondestructive studies in such diverse areas as neutron microtomography, dynamics of fuel injection, material composition, archaeology, water propagation and many others.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Crystal microstructure
- elasticity
- imaging
- instrumentation and
- measurement
- ionizing radiation sensors
- position sensitive particle
- detectors
- radiography
- reconstruction algorithms
Publication and Content Type
- art (subject category)
- ref (subject category)
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