Characterization of CsI(Tl) and LYSO(Ce) scintillator detectors by measurements and Monte Carlo simulations.

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ID: 32894
2019
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Ranked #9 of 55 articles by views in Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

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Abstract
In this study, we investigated the performance of two cuboid scintillation detectors: thallium-activated cesium iodide [CsI(Tl)] and cerium-doped lutetium yttrium orthosilicate [LYSO(Ce)]. The CsI and LYSO crystals were 5 mm thick with an active area of 10 mm × 10 mm. The LYSO scintillator is characterized by its high stopping power and non-hygroscopicity (neither packaging nor light guide are required). Nevertheless, the main disadvantages of LYSO detectors are a lower light output (32 photons/keV) and an intrinsic radioactivity caused by the β decay of Lu (half-life 3.78 × 10 years). In contrast, CsI crystals present a relatively high light output (54 photons/keV) allowing better energy resolution; however, the drawback of a CsI detector is low detection efficiency. First, we measured the photon detection efficiency of each scintillator in the photon energy range of 60-1332 keV using radioactive sources. Second, we computed detector efficiencies using the Monte Carlo codes MCNP and Geant4. A comparison between simulated and measured efficiencies showed a good agreement. This comparison confirmed the validity of the mathematical models developed for the two scintillation detectors CsI(Tl) and LYSO(Ce) under investigation.
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mouhti2019characterizationapplied Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mouhti, I;Elanique, A;Messous, M Y;Benahmed, A;McFee, J E;Elgoub, Y;Griffith, P;
Journal Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
Year 2019
DOI
S0969-8043(19)30140-X
URL
Keywords Keywords not found

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