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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。
A set of radioactive sensing experimental system based on plastic scintillation fiber was designed and constructed. The device was used to measure the radioactive dose and verify the feasibility and performance of plastic scintillation fiber in the field of radioactive detection. By analyzing the equivalent dose curves measured by pulse counting and pulse counting intensity weighted in different radiation environments, the difference of the radioactive doses in different radiation environments is distinguished and the equivalent dose curve shows a good linearity. Coefficient to determine the coefficient R2 value> 99%. The experimental results show that the radioactive detection system based on plastic scintillation fiber has some effective sensitivity and constant measurement stability in dose sensing.