期刊
JOURNAL OF RARE EARTHS
卷 37, 期 9, 页码 978-983出版社
ELSEVIER
DOI: 10.1016/j.jre.2019.01.001
关键词
Ce:(Gd2Y)Al5O12/Ce:Y3Al5O12 composite ceramic; Spectrum control; X-ray energy; Rare earths
资金
- National Natural Science Foundation of China [61378069, 61405221, 11535010]
- Youth Innovation Promotion Association of the Chinese Academy of Science (CAS)
- National Key Research and Development Program of China [SQ2017YFGX010025-03]
- Interdisciplinary Innovation Team of the CAS
- China Postdoctoral Science Foundation [2016M601654]
In this paper, a novel Ce(Gd2Y)Al5O12/Ce:Y3Al5O12(Ce:GYAG/Ce:YAG) composite scintillation ceramic was designed and fabricated by a solid-state reaction method. The phase, luminescence and scintillation properties were investigated. The Ce:GYAG/Ce:YAG composite ceramic consisting of two-phase has a broad emission band ranging from 500 to 750 nm. The total mass attenuation coefficient of Ce:GYAG/Ce:YAG is 0.3864 cm(-1), in between those of Ce:YAG and Ce:GYAG ceramics. In addition, the composite ceramic had a high light yield of 20430 ph/MeV. By controlling the ratio of GYAG and YAG, the composite ceramic can realize a spectrum design and total mass attenuation coefficient control to meet the requirements for wide-X-ray-energy-range detectors. (C) 2019 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
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