Abstract
Abstract The luminescence and scintillation properties of Lu 0.8 Gd 1.2 SiO 5 :Ce and Lu 1.8 Gd 0.2 SiO 5 :Ce single crystals are compared. At 662 keV γ-rays, light yield (LY) value of 29,800 ph/MeV obtained for Lu 1.8 Gd 0.2 SiO 5 :Ce is much higher than that of 20,200 ph/MeV obtained for Lu 0.8 Gd 1.2 SiO 5 :Ce. The energy resolution of 6.0% obtained for Lu 0.8 Gd 1.2 SiO 5 :Ce is better than that of 7.7% for Lu 1.8 Gd 0.2 SiO 5 :Ce due to its better intrinsic resolution and proportionality of LY. The LY and energy resolution for α-rays, as well as a LY ratio under excitation with α- and γ-rays (α/γ ratio) are also determined. The intrinsic LY and light loss coefficient under excitation with α- and γ-rays are evaluated. The photofraction at 662 keV γ-rays is also determined and discussed.
Published Version
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