Photoluminescence and Scintillation Properties of Tb:GdTaO4 Crystals

Photoluminescence and Scintillation Properties of Tb:GdTaO4 Crystals

Tb-doped GdTaO4 crystals were synthesized to investigate their photoluminescence and scintillation properties. Tb:GdTaO4 exhibits photo- and radioluminescence characterized by several sharp peaks due to 4f–4f transitions of Tb3+. The photo- and radioluminescence decay time constants are 500–900 μs....

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Veröffentlicht in:Sensors and materials 2021-06, Vol.33 (6), p.2203
Hauptverfasser: Nakauchi, Daisuke, Kato, Takumi, Kawaguchi, Noriaki, Yanagida, Takayuki
Format: Artikel
Sprache:eng
Schlagworte:
Cesium 137
Cesium isotopes
Crystals
Gamma rays
Photoluminescence
Pulse amplitude
Scintillation
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Zusammenfassung:Tb-doped GdTaO4 crystals were synthesized to investigate their photoluminescence and scintillation properties. Tb:GdTaO4 exhibits photo- and radioluminescence characterized by several sharp peaks due to 4f–4f transitions of Tb3+. The photo- and radioluminescence decay time constants are 500–900 μs. The values become short with increasing Tb concentration and are typical for the 4f–4f transitions of Tb3+. From the quantum yield (QY), radioluminescence spectra, and pulse height under 137Cs γ-rays, the 1% Tb:GdTaO4 crystal shows the highest scintillation output among the samples.
ISSN:0914-4935
2435-0869
DOI:10.18494/SAM.2021.3323