Microstructure, optical, and scintillation characteristics of Pr{sup 3+} doped Lu{sub 3}Al{sub 5}O{sub 12} optical ceramics
- Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)
- Institute of Physics, ASCR, Cukrovarnicka 10, Prague 6, 16253 (Czech Republic)
0.5, 1.0, and 5.0 at. %Pr{sup 3+} doped Lu{sub 3}Al{sub 5}O{sub 12} (Pr:LuAG) optical ceramics are fabricated and compared with Bi{sub 4}Ge{sub 3}O{sub 12} (BGO) and Pr:LuAG single crystals as for their optical, luminescence and scintillation properties. Radio-luminescence intensity of the fast UV emission based on 5d{sub 1}{yields}4f Pr{sup 3+} transition reaches up to 20 times of that of BGO single crystal reference scintillator. Photoelectron yield of the best performing 0.5 at. % Pr:LuAG ceramic sample is about 1002 phels/MeV, about 30% lower than that of BGO reference sample and about 65% lower than that of Pr:LuAG single crystal. The trapping phenomena at grain boundaries and/or structural defects are proposed as the main cause of degradation of the scintillation response of the Pr:LuAG optical ceramics.
- OSTI ID:
- 21538020
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 1 Vol. 109; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALLOYS
CERAMICS
CHARGED PARTICLES
CRYSTALS
DEFECTS
DOPED MATERIALS
EMISSION
ENERGY RANGE
GRAIN BOUNDARIES
IONS
LUMINESCENCE
LUTETIUM COMPOUNDS
MATERIALS
MEV RANGE
MICROSTRUCTURE
MONOCRYSTALS
PHOTOLUMINESCENCE
PHOTON EMISSION
PRASEODYMIUM ADDITIONS
PRASEODYMIUM IONS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
SCINTILLATIONS
SPECTRA
TRAPPING
ULTRAVIOLET SPECTRA
YIELDS