Gamma-ray imaging with a time-modulated random coded aperture

In this article, we present a new industrial gamma-ray imaging system. This system takes advantage of a time-modulated random coded aperture (TMRCA). The gamma-ray detector coupled to the TMRCA can be position-sensitive or non-position-sensitive. The TMRCA imaging system could offer the ability to i...

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Bibliographic Details
Published in:Review of scientific instruments 2019-01, Vol.90 (1), p.015107-015107
Main Authors: Wang, Dongming, Ruskov, Ivan N., Hu, Huasi, Kopatch, Yuri N., Grozdanov, Dimitar N., Fedorov, Nikita A., Aliyev, Fuad A.
Format: Article
Language:English
Subjects:
Apertures
BGO (crystal)
Cesium 137
Cesium isotopes
Energy resolution
Gamma ray detectors
Gamma rays
Imaging
Paraffins
Position sensing
Scientific apparatus & instruments
Spatial resolution
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Summary:In this article, we present a new industrial gamma-ray imaging system. This system takes advantage of a time-modulated random coded aperture (TMRCA). The gamma-ray detector coupled to the TMRCA can be position-sensitive or non-position-sensitive. The TMRCA imaging system could offer the ability to identify radioactive sources without losing spatial resolution. With a non-position-sensitive BGO detector, a prototype TMRCA imaging system was constructed. The prototype system was investigated with two gamma-ray sources (137Cs, 60Co) and a 238Pu–Be neutron source, which was placed in a paraffin moderator to produce an extended source. The experimental results suggest that the TMRCA imaging system offers the opportunity to achieve high spatial-energy resolution cost-effectively for high-energy gamma rays.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.5050211