人工晶体学报2007，Vol.36Issue(5)：967-970,4.
焦硅酸镥(Lu2Si2O7:Ce)闪烁晶体的生长与发光性能研究
Growth and Luminescence Properties of Lutetium Pyrosilicate (Lu2Si2O7:Ce) Scintillation Crystals
摘要
Abstract
Cerium-doped lutetium pyrosilicate (LPS:Ce) crystal is a new found inorganic scintillator with promising scintillation properties. A boule with dimension of φlSmm × 40mm was grown successfully by using the Czochralski method. It's crystal structure was determined to be monoclinic with space group of C2/m and some inclusions was found to be composed of LPS and quartz. The optical transmission, UV and X-ray excited emission spectra, as well as decay curves were measured at room temperature. The cutoff edge of LPS:Ce crystals shifts to 350nm after doped with cerium ions. Two emissions peaks, 384nm and 412nm can be fitted into in the UV and X-ray excited emission spectra. The decay time of the fluorescence can be fitted with one exponential terms, 38.75ns, these two emission result from the transition of electrons from 5d to two ground levels (2F5/2 and 2F7/2)of Cerium ions(Ce3+)in the LPS crystals. The difference of luminescence between LPS: Ce and LSO: Ce can be explained from the difference of the crystal structure of these two types of crystals.关键词
焦硅酸镥/晶体生长/发光性能Key words
lutetium pyrosilicate/ crystal growth/ luminescence properties分类
数理科学引用本文复制引用
任国浩,李焕英,陆晟,丁栋舟,冯鹤,王广东..焦硅酸镥(Lu2Si2O7:Ce)闪烁晶体的生长与发光性能研究[J].人工晶体学报,2007,36(5):967-970,4.基金项目
This work supported by the National Natural Science Foundation of China (No. 50272072) （No. 50272072）
