Development and Characterization of a Phoswich Radiation Sensor to Simultaneously Measure the Count Rates and Energies of Beta and Gamma Radiation
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In this research, we developed and characterized a phoswich radiation sensor (PHORS) to simultaneously measure the count rates and the energies of beta and gamma radiation. The proposed PHORS device comprises a sensing probe combining NaI(Tl) and CaF2(Eu) scintillators for simultaneous measurement of beta and gamma radiation, a multichannel analyzer to characterize the radiation energy, and a laptop computer for signal analysis. For its performance test, we employed a prototype PHORS to measure the energies and the count rates of beta and gamma radiation from three different radiation sources for separation distances from 2 to 10 cm. The count rates of the PHORS were consistent with expected rates, and the captured energy spectra showed classic radionuclide characteristics. Thus, the proposed PHORS system provides an effective and facile tool to detect beta and gamma radiation simultaneously and to identify radionuclides from the captured energy spectra.
KeywordsPhoswich detector Scintillator Beta and gamma radiation Multichannel analyzer Energy spectrometry
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This work was supported by National Research Foundation of Korea grants (NRF-2017M2A8A4056456 and NRF-2017M2B2A9A02049319) funded by the Korean Government.
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