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Transparent ceramic Yb-doped Lu2O3 were evaluate on scintillation properties. In X-ray excited radioluminescence, they exhibited Yb3+ charge transfer luminescence around 350 nm. Scintillation decay time profiles were investigated and they showed ultrafast scintillation of around ∼ 1ns. Light yields under 137Cs 662 keV γ-ray excitation were around 500 ph/MeV.
Temperature dependence of CdWO4 single crystal scintillator fabricated by Nihon Kessho Kogaku was evaluated from −30 °C to 60 °C with different excitation energies and different signal accumulated systems. Though the light yield was relatively stable than other famous scintillators, temperature dependence showed a dependence on excitation sources. The reasons will be blamed for the difference of the...
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 Pr 1 and 5% doped KY3F10 scintillators were fabricated by Tokuyama Corp. In photoluminescence, they showed intense Pr3+ 5d-4f transition at 300 nm under 210 nm excitation with primary decay time of few ns. In X-ray induced scintillation spectra, they also exhibited intense Pr3+ 5d-4f emission around 300 nm. Scintillation decay times of Pr 1 and 5% doped KY3F10 were 4.5 and 2.5 ns,...
Ceramic Ce 0.1% doped Gd3(Ga,Al)5O12 scintillator fabricated by Konoshima Chemical was evaluated. In X-ray induced radioluminescence, intense emission peak appeared around 530 nm. When 137Cs 662 keV γ-ray was irradiated, scintillation light yield turned out to be 70000 ph/MeV by using Si-APD. Scintillation decay time was a typical value of Ce-doped garnet materials, ∼ 100 ns.
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.
We manufactured transparent optical ceramic of Pr 0.2–1% doped (Pr:LuAG) by the sintering method. We compare its optical and scintillation properties with the single crystal counterpart grown by the conventional Czochralski method. So far the scintillation ceramic of Pr:LuAG appeared inferior to its single crystal analog especially in terms of light yield. However,...
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