S&M2832 Research Paper of Special Issue
Published: February 21, 2022
Comparative Study of Optical and Scintillation Properties of Tm-doped La2Si2O7 and Lu2Si2O7 Single Crystals [PDF]
Prom Kantuptim, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida
(Received October 13, 2021; Accepted November 30, 2021)
Keywords: lanthanum pyrosilicate, lutetium pyrosilicate, thulium, photoluminescence, pulse height
Lanthanum and lutetium pyrosilicate (La2Si2O7 and Lu2Si2O7, respectively) single crystals with a Tm doping concentration of 2.0% were successfully synthesized by the floating-zone method. X-ray diffraction patterns showed a single phase in each compound without the impurity phase. Both their photoluminescence (PL) and scintillation properties were systematically determined in this study, including PL emission, PL decay time, X-ray-induced scintillation spectra, X-ray-induced scintillation decay time, afterglow level, and pulse height spectra. The emission from Tm3+ 4f–4f transition was observed on both samples as shown by PL emission as well as X-ray-induced scintillation spectra. Under 137Cs 662 keV γ-ray irradiation, their scintillation light yields were 2340 ph/MeV for Tm-doped Lu2Si2O7 and 1440 ph/MeV for Tm-doped La2Si2O7.Corresponding author: Prom Kantuptim
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Cite this article
Prom Kantuptim, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida, Comparative Study of Optical and Scintillation Properties of Tm-doped La2Si2O7 and Lu2Si2O7 Single Crystals, Sens. Mater., Vol. 34, No. 2, 2022, p. 603-610.