Luminescence and scintillation properties of Ce3+-doped SiO2–Al2O3–BaF2–Gd2O3 glasses
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Author list: Chewpraditkul W., Pattanaboonmee N., Yawai N., Chewpraditkul W., Lertloypanyachai P., Sreebunpeng K., Yoshino M., Liu L., Chen D.
Publisher: Elsevier
Publication year: 2019
Journal: Optical Materials (0925-3467)
Volume number: 98
ISSN: 0925-3467
eISSN: 1873-1252
Languages: English-Great Britain (EN-GB)
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Abstract
Ce3+-doped glasses with composition of (65-x)SiO2 − 20Al2O3 –15BaF2 -xGd2O3 (x = 5, 10, 15, 20 and 25) were synthesized under CO atmosphere by melt-quenching method. The photoluminescence (PL) emission due to Ce3+: 5d1 → 4f transition was red-shifted with increasing Gd2O3 content. The acceleration of PL decay was observed with increasing Gd2O3 content. The scintillation efficiency of about 100% of the Bi4Ge3O12 scintillator was obtained for a 10%Gd2O3 containing glass while a high light yield (LY) of 2050 photons/MeV and energy resolution of 15.8% at 662 keV γ rays was obtained for a 15%Gd2O3 containing glass. The integrating-time dependence of LY value and LY ratio (α/γ ratio) under excitation with α- and γ-rays were also measured. © 2019 Elsevier B.V.
Keywords
Gd3+, Scintillating glass
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