Color center and radiation center in Lu_2SiO_5:Ce crystal  

作　　者：秦来顺 陆晟 丁栋舟 李焕英 任国浩 

机构地区：[1]College of Materials Science and Engineering, China Jiliang University [2]Shanghai Institute of Ceramics, Chinese Academy of Sciences

出　　处：《Journal of Rare Earths》2008年第5期678-680,共3页稀土学报（英文版）

基　　金：the National Natural Science Foundation of China (50272072, 50702054);the 863 program of Ministry of Science and Technology of China (2002AA324070)

摘　　要：Radiation damage of Lu2SiO5：Ce （LSO：Ce） crystals was investigated through intense UV light. An absorption band at 435 nm was observed in the transmission spectrum of the damaged LSO：Ce crystal, similar to that of absorption band caused by gamma ray irradiation. GDMS analysis for LSO：Ce crystals revealed the existence of impurities, such as Yb in the crystals. The impurities might be responsible for the optical absorption of the color center and the radiation center.Radiation damage of Lu2SiO5：Ce （LSO：Ce） crystals was investigated through intense UV light. An absorption band at 435 nm was observed in the transmission spectrum of the damaged LSO：Ce crystal, similar to that of absorption band caused by gamma ray irradiation. GDMS analysis for LSO：Ce crystals revealed the existence of impurities, such as Yb in the crystals. The impurities might be responsible for the optical absorption of the color center and the radiation center.

关 键 词：color center radiation damage LSO：Ce scintillation crystal rare earths 

分 类 号：O614.332[理学—无机化学]