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Scintillation Light Yields of Tb-doped SiO2 Glasses

We investigated the scintillation light yields of Tb-doped SiO2 glasses. We prepared 0.05, 0.1, and 0.5% Tb-doped SiO2 glasses by melting and solidifying sintered ceramic rods using an oxygen burner. The obtained samples showed no crystalline phases in X-ray diffraction measurements. Pulse height sp...

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Bibliographic Details
Published in:Sensors and materials 2023-01, Vol.35 (2), p.499
Main Authors: Kawaguchi, Noriaki, Watanabe, Kenichi, Shiratori, Daiki, Kato, Takumi, Nakauchi, Daisuke, Yanagida, Takayuki
Format: Article
Language:English
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Summary:We investigated the scintillation light yields of Tb-doped SiO2 glasses. We prepared 0.05, 0.1, and 0.5% Tb-doped SiO2 glasses by melting and solidifying sintered ceramic rods using an oxygen burner. The obtained samples showed no crystalline phases in X-ray diffraction measurements. Pulse height spectra of the Tb-doped SiO2 samples were measured under γ-ray excitation using a measurement system for slow decay pulses. The number of channels at the Compton edge of the 0.5% Tb-doped sample was the highest and was approximately 50% of that of a commercial lithium glass scintillator (GS20). By considering the light yield of GS20 and the wavelength dependence of the quantum efficiency of the photomultiplier tube, the light yield of the 0.5% Tb-doped SiO2 sample was estimated as 3800 photons/MeV.
ISSN:0914-4935
2435-0869
DOI:10.18494/SAM4136