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氟化铅晶体的生长与Cherenkov辐射特性

沈定中; 任国浩; 王绍华; 邓群; 殷之文   

  1. 中国科学院上海硅酸盐研究所; 上海 200050
  • 收稿日期:1998-01-02 修回日期:1998-03-23 出版日期:1999-02-20 网络出版日期:1999-02-20

Growth And Cherenkov Radiation Characteristics of PbF2 Crystals

SHEN Ding-Zhong; REN Guo-Hao; WANG Shao-Hua; DENG Qun; YIN Zhi-Wen   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China)
  • Received:1998-01-02 Revised:1998-03-23 Published:1999-02-20 Online:1999-02-20

摘要: 采用脱氧剂非真空坩埚下降法生长出的大尺寸PbF2晶体具有优异的Cherenkov辐射特性,其透光截止波长最短可达245um,能量分辨率优于32%/E1/2,辐照损伤很弱,用365um的过滤光漂白后,透光能力几乎可以完全恢复到辐照之前的水平.

关键词: PbF2晶体, Cherenkov辐射, 截止波长, 能量分辨率, 辐照损伤

Abstract: A large size PbF2 crystal was grown with the modified non-vacuum Bridgeman method. Itpossesses outstanding Cherenkov radiation properties. Its cut-off edge is as short as 245urn, theenergy resolution is superior to 3.2%/E1/2, and the radiation damage is weak and can be cured byannealing with 365um filtered light.

Key words: PbF2 crystal, Cherenkov radiation, cut-off edge, energy resolution, radiation damage

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