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Ce 0.1–20% doped CaF2 crystals were prepared by Tokuyama Corp., and their scintillation and optically stimulated luminescence (OSL) responses were systematically studied. In scintillation, Ce 0.1% doped sample exhibited the highest light yield while Ce 20% doped sample showed the strongest OSL intensity. Throughout this work, the complementary relation between scintillation and OSL was experimentally...
Single crystal LiCaAlF6 doped with Ce or Eu synthesized by Tokuyama Corp. were examined on dosimeter properties. In optically stimulated luminescence (OSL), Ce-doped LiCaAlF6 exhibited detectable signal while that of Eu-doped one was quite weak. In thermally stimulated luminescence (TSL), they both showed strong TSL and the linearity between the irradiated dose and TSL intensity was quite linear from...
0.1SnO-24.9SrO-75B2O3, 0.5SnO-24.5SrO-75B2O3, 0.5SnO-40Li2O-40B2O3-20SiO2, and 5SnO-60ZnO-40P2O5 glasses were developed and evaluated on their scintillation properties. They all exhibited a broad luminescent peak around 400 nm due to Sn2+ ns2 type emission. In pulse height spectra, the absolute light yield of the brightest sample, 5SnO-60ZnO-40P2O5,was around 400 ph/5.5 MeV-α.
Single crystalline LuF3 doped with Nd3+, Er3+, and Tm3+ were synthesized by Tokuyama Corp. aiming to apply VUV emitting scintillators. In X-ray induced radioluminescence, they exhibited VUV luminescence at 160–180 nm due to 5d-4f transitions. Among them, Nd-doped one showed the highest scintillation light yield of ∼ 1000 ph/MeV when irradiated by 137Cs γ-rays. The scintillation decay time of Nd-doped...
Undoped ZnS crystal was evaluated on its scintillation characteristics. In optical transmittance, high transparency of 70% was observed from UV to near infrared wavelengths. In X-ray induced radioluminescence, two intense peaks appeared at 430 and 520 nm. When 241Am was irradiated, its scintillation light yield resulted 500 ph/5.5 MeV-α.
The crystals of 0.1, 0.5, 1, and 3% Ho doped Lu Al O (Ho:LuAG) grown by the micro-pulling-down method were examined for their scintillation properties. At wavelengths longer than 300 nm, Ho:LuAG crystals demonstrated around 60% transparency with many absorption peaks attributed to Ho 4f f transitions. When excited by Am -ray to obtain radio luminescence...
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