期刊
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
卷 59, 期 5, 页码 2146-2151出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNS.2012.2189583
关键词
Gamma ray detection; scintillation counters; solid scintillation detectors
资金
- JST Sentan
- Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) [23686135, 23656584]
- Yazaki Memorial Foundation for Science and Technology
- Japan Science Society
- Sumitomo Foundation
- Iketani Science and Technology Foundation
- Czech Project GA AV [KAN300100802]
- Grants-in-Aid for Scientific Research [23686135] Funding Source: KAKEN
We manufactured transparent optical ceramic of Pr 0.2-1% doped Lu3Al5O12 (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, in the present case our ceramic Pr 0.25%-doped sample exhibited by 20% higher light yield compared to single crystal under gamma-ray excitation. Furthermore, in the ceramic sample the slower scintillation decay components were suppressed and the defect related host emission as well. The optimized technology of optical ceramics thus appears very competitive to single crystals and opens great practical prospectives for the former materials in the field of fast scintillators.
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