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16. Thermal Neutron Discrimination Using a Novel Phoswich Detector of Gd3Ga3Al2O12:Ce,B and CsI:Tl Single Crystals.

Author

Kalyani, Tyagi, Mohit, Rawat, Sheetal, Singh, Awadh K., Patel, Tarun, Sarkar, P. S., Desai, Shraddha S., and Kumar, G. Anil

Subjects
THERMAL neutrons, SINGLE crystals, NEUTRON counters, DETECTORS, NEUTRON capture
Abstract

A phoswich detector was fabricated using a combination of single-crystal scintillators of CsI:Tl and Gd3Ga3Al2O12:Ce,B. The performance characteristics of this novel phoswich detector were investigated for thermal neutron detection in the presence of different gamma backgrounds using an Am–Be source and in a research reactor beam line. High atomic density and excellent thermal neutron capture cross section of Gd leads to the high detection efficiency for thermal neutrons in a 1-mm thin disk of Gd3Ga3Al2O12 crystal. The high figure of merit of ~6.5 obtained for thermal neutron detection ensures the detector’s excellent discrimination property in the presence of high gamma background. [ABSTRACT FROM AUTHOR]

Published
2020
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