物理学报2009，Vol.58Issue(11)：8050-8054,5.
Ce:YAG晶体和透明陶瓷的光学和闪烁性能
Optical and scintillation properties of Ce:YAG crystal and transparent ceramics
摘要
Abstract
In this work, Ce:YAG crystal and transparent ceramics were prepared by the temperature gradient technique (TGT) and sintering in vacuum, respectively. The optical and scintillation properties of the as-prepared Ce:YAG crystal and ceramics were investigated and compared. Both crystal and ceramics show typical Ge~(3+) absorption bands at 230,340 and 460 nm and a 540 am emission peak. However, the color center absorption bands at 296 and 370 nm with an emission peak at 398 nm were also observed in the TGT crystal. X-ray fluorescence spectra of crystal and ceramics show an emission peak at 520 nm, but another emission peak at 300 nm was found in the crystal which can be attributed to the Y_(Al) antisite defects. An average light output of 16800 and 9800 photons/MeV and a single exponential decay with the decay time constants of 61.9 and 62.97 ns were found in the as-prepared Ce:YAG crystal and ceramics. Compared with Ce:YAG ceramics, Ce:YAG crystal shows a higher light yield and faster response.关键词
Ce:YAG/闪烁晶体/透明陶瓷Key words
Ce: YAG/scintillator crystal/transparent ceramic分类
数理科学引用本文复制引用
杨新波,石云,李红军,毕群玉,苏良碧,刘茜,潘裕柏,徐军..Ce:YAG晶体和透明陶瓷的光学和闪烁性能[J].物理学报,2009,58(11):8050-8054,5.基金项目
国家自然科学基金(批准号:60607015 （）
60878041)和国家高技术研究发展计划(批准号:2007AA03Z523)资助的课题.Project supported by the National Natural Science Foundation of China (Grant Noa. 60607015 （批准号:2007AA03Z523）
60878041) and the National High Technology Development Program of China (Grant No. 2007AA03Z523). （Grant No. 2007AA03Z523）
