TY - JOUR
T1 - Scintillation properties of transparent Lu3Al5O12 (LuAG) ceramics doped with different concentrations of Pr3+
AU - Yanagida, Takayuki
AU - Fukabori, Akihiro
AU - Fujimoto, Yutaka
AU - Ikesue, Akio
AU - Kamada, Kei
AU - Kataoka, Jun
AU - Yokota, Yuui
AU - Yoshikawa, Akira
AU - Chani, Valery
PY - 2011/1
Y1 - 2011/1
N2 - Transparent ceramics of Pr-doped (0.2 mol%, 0.6 mol%, 1 mol%, and 2 mol%) Lu3Al5O12 (LuAG) scintillators produced by the sintering method are discussed. These materials were cut to the specimens with physical dimensions of 5 × 5 × 2 mm3. Similar size specimens were also prepared from Czochralski grown Pr:LuAG single crystals to compare scintillation properties. Their transmittance and radio luminescence spectra were evaluated. All specimens were highly transparent in wavelength range above 300 nm, and intense Pr3+ 5d-4f emission was detected around 310 and 370 nm under excitation with X-ray. Under 137Cs γ-ray is irradiation, 2 keV photo-absorption peaks were also clearly observed in each sample. The Pr 0.6 mol% doped LuAG ceramics demonstrated highest light yield achievable among the ceramics, and it was half of that observed in the single crystals. Under pulse X-ray excitation, the decay time constants became faster when Pr concentration increased, and. the fastest decay (∼5.7 ns time constant) was noticed in the 2 mol% doped ceramic. (
AB - Transparent ceramics of Pr-doped (0.2 mol%, 0.6 mol%, 1 mol%, and 2 mol%) Lu3Al5O12 (LuAG) scintillators produced by the sintering method are discussed. These materials were cut to the specimens with physical dimensions of 5 × 5 × 2 mm3. Similar size specimens were also prepared from Czochralski grown Pr:LuAG single crystals to compare scintillation properties. Their transmittance and radio luminescence spectra were evaluated. All specimens were highly transparent in wavelength range above 300 nm, and intense Pr3+ 5d-4f emission was detected around 310 and 370 nm under excitation with X-ray. Under 137Cs γ-ray is irradiation, 2 keV photo-absorption peaks were also clearly observed in each sample. The Pr 0.6 mol% doped LuAG ceramics demonstrated highest light yield achievable among the ceramics, and it was half of that observed in the single crystals. Under pulse X-ray excitation, the decay time constants became faster when Pr concentration increased, and. the fastest decay (∼5.7 ns time constant) was noticed in the 2 mol% doped ceramic. (
KW - Gamma-ray
KW - LuAG
KW - Pr
KW - Scintillator
KW - Transparent ceramic
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U2 - 10.1002/pssc.201000623
DO - 10.1002/pssc.201000623
M3 - Article
AN - SCOPUS:78751503537
SN - 1862-6351
VL - 8
SP - 140
EP - 143
JO - Physica Status Solidi (C) Current Topics in Solid State Physics
JF - Physica Status Solidi (C) Current Topics in Solid State Physics
IS - 1
ER -