Color center and radiation center in Lu2SiO5:Ce crystal
来源期刊：JOURNAL OF RARE EARTHS2008年第5期
论文作者：REN Guohao QIN Laishun LU Shen LI Huanying DING Dongzhou
Key words：color center; radiation damage; LSO:Ce; scintillation crystal; rare earths;
Abstract: Radiation damage of Lu2SiO5:Ce (LSO:Ce) crystals was investigated through intense UV light. An absorption band at 435 tun 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.
REN Guohao1，QIN Laishun2，LU Shen1，LI Huanying1，DING Dongzhou1
(1.Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201800,China;
2.College of Materials Science and Engineering,China Jiliang University,Hangzhou 310018,China)
Abstract:Radiation damage of Lu2SiO5:Ce (LSO:Ce) crystals was investigated through intense UV light. An absorption band at 435 tun 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.
Key words:color center; radiation damage; LSO:Ce; scintillation crystal; rare earths;
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