Abstract
Yttrium-gadolinium pyrosilicate ((Y2-xGdx)Si2O7) single crystals with different ratios of yttrium to gadolinium (x = 0.1–1.9) and 2% Ce-dopant were successfully synthesized using the floating-zone method. In this work, photoluminescence (PL) and scintillation properties of 2% Ce-doped (Y2-xGdx)Si2O7 were investigated. The conducted experiments included PL decay time and emission, X-ray-induced decay time and scintillation spectra, an afterglow analysis, as well as the total scintillation light yield by γ-ray-irradiation pulse-height spectra. Interesting results were including the considerably low afterglow at 20 ms of 40–65 ppm compared to commercial scintillator materials on the market like CdWO4. Further, the high light yield of 21,800 ph/MeV was achieved in Y0.5Gd1.5Si2O7 under 662 keV (137Cs) γ-ray-irradiation.
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