In this study, we propose an original approach for particle discrimination in a mixed radiation field using scintillators. The method relies on the possibility to identify the point of interaction in a phoswich detector from the emission spectra of the produced scintillation light, using optical filters as passive selectors. As a proof of concept, we developed a compact prototype thermal neutron active dosimeter for mixed neutron/gamma fields. The detector was characterized in terms of energy calibration, neutron efficiency and gamma rejection. The obtained results show that more than the 99% of counts due to gamma rays are rejected if the color discrimination is employed, thus demonstrating the feasibility of the proposed approach to be used in radiation detection.

Development of a new optical-based quasi-digital particle discrimination technique using inorganic scintillators

Zorloni G.;Caresana M.
2020-01-01

Abstract

In this study, we propose an original approach for particle discrimination in a mixed radiation field using scintillators. The method relies on the possibility to identify the point of interaction in a phoswich detector from the emission spectra of the produced scintillation light, using optical filters as passive selectors. As a proof of concept, we developed a compact prototype thermal neutron active dosimeter for mixed neutron/gamma fields. The detector was characterized in terms of energy calibration, neutron efficiency and gamma rejection. The obtained results show that more than the 99% of counts due to gamma rays are rejected if the color discrimination is employed, thus demonstrating the feasibility of the proposed approach to be used in radiation detection.
Inorganic scintillator phoswich
Neutron detection
Particle discrimination
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1144936
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