High-Resolution Neutron Counting Sensor in Strain Mapping Through Transmission Bragg Edge Diffraction
Författare
Summary, in English
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.
Avdelning/ar
Publiceringsår
2011
Språk
Engelska
Sidor
3433-3436
Publikation/Tidskrift/Serie
IEEE Sensors Journal
Volym
11
Issue
12
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Natural Sciences
- Physical Sciences
Nyckelord
- Crystal microstructure
- elasticity
- imaging
- instrumentation and
- measurement
- ionizing radiation sensors
- position sensitive particle
- detectors
- radiography
- reconstruction algorithms
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1558-1748