Journal
OPTICAL MATERIALS
Volume 35, Issue 12, Pages 2480-2485Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2013.07.002
Keywords
Single crystal; Ceramic; Scintillation detector; Ce3+; Scintillator
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Funding
- JST Sentan from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) [23686135, 23656584]
- Yazaki Memorial Foundation for Science and Technology
- Shimazu Sci. Foundation
- Kato Foundation for Promotion of Science
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Tokuyama Science Foundation
- Iketani Science and Technology Foundation
- Asahi Glass Foundation
- Grants-in-Aid for Scientific Research [23656584, 23686135] Funding Source: KAKEN
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Recent study revealed that single crystal Ce:Gd-3(Al,Ga)(5)O-12 (Ce:GAGG) showed good scintillation response under gamma-ray exposure. We discover here that ceramic Ce:GAGG scintillator exhibited better performance than the single crystal counterpart. We developed Ce 1% doped ceramic and single crystal GAGG scintillators with 1 mm thick and compared their properties. In radioluminescence spectra, they showed intense emission peaking at 530 nm due to Ce3+ 5d-4f transition. The Cs-137 gamma-ray induced light yields of ceramic and single crystal resulted 70000 ph/MeV and 46000 ph/MeV with primary decay times of 165 and 143 ns, respectively. At present, the observed light yield was the brightest in oxide scintillators. (C) 2013 Elsevier B.V. All rights reserved.
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