塑料闪烁光纤用于放射性剂量探测的实验研究  

Experimental study of radiation dose detection based on plastic scintillating fiber

作　　者：吴长进 杨斌[2] 李红志[3] 刘波[1] 刘海锋[1] 张戈[1] 

机构地区：[1]南开大学现代光学研究所光信息科学与技术教育部重点实验室天津市光电传感器与传感网络技术重点实验室,天津300350 [2]天津市技术物理研究所,天津300192 [3]国家海洋技术中心,天津300112

出　　处：《光电子．激光》2017年第10期1125-1130,共6页Journal of Optoelectronics·Laser

基　　金：天津市科技支撑计划(16YFZCSF00400);南开大学"国家级大学生创新创业训练计划"(201610055054)资助项目

摘　　要：设计并搭建了一套基于塑料闪烁光纤的放射性传感实验系统,利用该装置进行了放射性剂量测量实验,验证塑料闪烁光纤用于放射性探测领域的可行性和表现。通过分析采用脉冲计数和脉冲计数强度加权两种方法对在不同放射环境下测量获得的等效剂量曲线,分辨出不同放射环境下放射性剂量的差异,且等效剂量曲线呈现出良好的线性,拟合确定系数R2值>99%。实验结果表明,基于塑料闪烁光纤的放射性探测系统,在剂量传感方面具有一定有效的灵敏度和持续测量的稳定性。The rapid development of more sophisticated nuclear techniques under various circumstances has driven the demand for radioactive monitoring. The traditional scintillation detectors generally combine the scintillator with the optical-electrical transducer in structure which severely limited the application and the properties of anti-electromagnetic interferences. With the advantages of low cost and good flexi- bility, the exploring of applying the advantages of optical fiber sensing technology to radiation dose detec- tion field is of great research value. Based on the plastic scintillating fiber, a radiation sensing experiment system was built. Experimental study of radiation dose detection was carried out and the experiment re- sult was analyzed to verify the feasibility and the performance of plastic scintillating fiber applied in the field of radiation detection. The equivalent dose curves obtained in different radiation environments were measured by the methods of pulse counting and pulse intensity respectively. The differences of radioac- tion dose in different radiation environments can be distinguished by the equivalent dose curves,and the equivalent dose curve shows a good linearity,the fitting coefficient R2 is greater than 99%. The experimental result proves that the radiation dose measurement system based on the plastic scintillating fiber has a certain sensitivity and stability in dose sensing.

关 键 词：闪烁光纤 放射性探测 剂量 

分 类 号：TL81[核科学技术—核技术及应用]