轻型α/β放射性气溶胶实时采样与测量系统设计

Development of a Light Real-Time Sampling and Monitoring System for α/β Radioactive Aerosol

设计了一款轻型的α/β放射性气溶胶实时采样与测量系统。该系统通过微型泵对气溶胶进行实时取样,放射性物质富集在滤膜表面;PIPS探测器对滤膜进行直接测量,通过反符合设计,有效降低γ射线的干扰。在室外进行空气采样测试,该系统对α和β的探测下限为191.16 Bq/m^(3)和1133.27 Bq/m^(3)。该系统的质量不足5 kg,可搭载在无人机、机器人及其他装备上,方便在复杂环境及核应急环境下使用。

A light real-time sampling and monitoring system forα/βradioactive aerosol was developed.Radioactive materials in aerosol are enriched on the filter card by micro-pumps drawing.Radiation on the filter card is detected by the PIPS detector directly with the anticoincidence design to reduce the interference of rays.The result of an outdoor air test showed:the detect limits of this system forαandβare 191.16 Bq/m^(3) and 1133.27 Bq/m^(3) respectively.The mass of monitor is less than 5 kg,which can be carried on drones,robots and other equipment for the application in the complex environment and nuclear emergency situation conveniently.