Light yield nonproportionality, intrinsic resolution and α/γ ratio of oxide single crystal scintillators
| Autor: | Nattasuda Yawai, Krittiya Sreebunpeng, Weerapong Chewpraditkul, W. Chewpraditkul, Ongsa Sakthong |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Radiation Materials science Resolution (electron density) Oxide Analytical chemistry Scintillator 01 natural sciences 030218 nuclear medicine & medical imaging 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Yield (chemistry) 0103 physical sciences Instrumentation Single crystal α particles Excitation |
| Zdroj: | Radiation Measurements. 125:73-77 |
| ISSN: | 1350-4487 |
| DOI: | 10.1016/j.radmeas.2019.02.002 |
| Popis: | In this work, we investigate α-particle response of oxide single crystal scintillators and related to the nonproportionality of light yield (LY) and intrinsic energy resolution under excitation with γ rays. The LY and energy resolution measurements are performed at 32, 59.5 and 662 keV γ rays and 5.5 MeV α particles. The α/γ ratio for Lu3Al5O12:Pr and Y3Al5O12:Pr with different Pr3+ concentrations and for (Gd,Y)3Al2Ga3O12:Ce and (Lu,Gd)2SiO5:Ce with different host compositions are also determined. The scintillators with high α/γ ratio show good proportionality of LY down to 32 keV γ rays. The correlation between α/γ ratio and intrinsic energy resolution measured with 32, 59.5 and 662 keV γ rays is obtained. Therefore, the nonproportional response and intrinsic energy resolution of scintillators could be characterized using α/γ ratio. |
| Databáze: | OpenAIRE |
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