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无机材料学报

• 研究论文 • 上一篇    下一篇

抑制BaF2晶体闪烁光慢成分的选择吸收膜系的研究

马晓辉; 顾牡; 徐荣昆; 吴永刚; 曹二华   

  1. 同济大学玻尔固体物理研究所 上海 200092
  • 收稿日期:2003-05-09 修回日期:2003-06-09 出版日期:2004-05-20 网络出版日期:2004-05-20

Metal/Dielectric Multilayers Filter to Suppress the Slow Component of the Scintillation Light in BaF2 Crystal

MA Xiao-Hui; GU Mu; XU Rong-Kun; WU Yong-Gang; CAO Er-Hua   

  1. Pohl Institute of Solid State Physics; Tongji University; Shanghai 200092; China
  • Received:2003-05-09 Revised:2003-06-09 Published:2004-05-20 Online:2004-05-20

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摘要： 根据BaF2晶体闪烁光快、慢成分波段的不同,设计并制备了用于抑制该晶体闪烁光慢成分的AL2O3/MgF2/Al/MgF2…金属-介质选择吸收膜系.透射光谱、发射光谱和发光衰减时间谱的实验结果显示,所研制的选择吸收膜系达到了预期的要求,BaF2晶体闪烁光快、慢成分比提高了80倍以上,有效地提高了BaF2闪烁晶体在高计数率测量中的应用价值.

关键词: BaF2闪烁晶体, 选择吸收膜系, 快、慢成分抑制比

Abstract: On the basis of the difference of the emission bands between the fast and slow components in BaF2
crystal, the metal/dielectric multilayers filter with several periods of Al2O3/MgF2/Al/MgF2… was designed and developed in order
to suppress the slow component of the scintillation light in BaF2. The results from transmission, emission and decay time spectrum show that
the film can increase about 80 times of the ratio of the intensities of the fast emission to the slow one and can widen the application field of BaF2
scintillation crystal in high count rate experiments.

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