原子能科学技术Issue(4)：715-720,6.DOI:10.7538/yzk.2014.48.04.0715
γ／快中子图像测量系统闪烁体光输出特性的实验研究
Experimental Research on Light Output Characteristic of Scintillator Applied in Pulsed γ-ray and Fast Neutron Imaging Systems
摘要
Abstract
In the intense pulsed radiation fields ,the scintillator is generally used as the converter of the γ-ray or fast neutron signals from the source region in an imaging system .The light output characteristic of the scintillator as well as the light collection efficiency of the optic imaging system to the scintillator is the key parameter for determining the system’s sensitivity and dynamic range .The relative light output of five types of inorganic/plastic scintillators such as YAG ∶Ce3+ ,ST401 ,EJ200 ,EJ260 and EJ264 ,was obtained through studying the rule about the output current variation of the scintillator and photon-sensitive instrument in various coupling conditions . T he influence of coupling distance on the light collection efficiency of the optic imaging system was also studied .The results indicate that the measured value of the scintillator light output achieves good consistency in conditions of different coupling distances ,and the anisotropy of scintillating photon emission must be considered to determine the light collection efficiency of the optic imaging system .关键词
γ成像/快中子成像/闪烁体/光输出/收光效率Key words
γ-ray imaging/fast neutron imaging/scintillator/light output/light collection efficiency分类
数理科学引用本文复制引用
祁建敏,章法强,陈进川,李林波,陈定阳..γ／快中子图像测量系统闪烁体光输出特性的实验研究[J].原子能科学技术,2014,(4):715-720,6.基金项目
国家自然科学基金青年基金资助项目（11005095）；中国工程物理研究院科学技术发展基金资助项目 （）
