辐射防护2025，Vol.45Issue(4)：337-342,6.
双通道高灵敏放射性气溶胶在线监测仪的研制
Development of a dual-channel high sensitive on-line monitor for radioactive aerosol
摘要
Abstract
To address the demand for rapid warning capability and laboratory-comparable sensitivity in radioactive aerosol monitoring at nuclear facilities,a high sensitive online radioactive aerosol monitor has been developed.The instrument features a dual-channel(real-time/delayed)detection structure,achieving performance enhancements through:(1)Extended sampling track length;(2)Optimized real-time channel response(1 min data refresh);(3)Integrated radon interference suppression combining decay correction,energy spectrum discrimination,and α/β ratio compensation techniques.This single device simultaneously achieves both rapid response(1 minute response time for real-time channel)and high sensitivity(detection limits of 10-4Bq/m3(α)and 10-2 Bq/m3(β)in delayed channel),resolving the contradiction between these two parameters in aerosol monitoring.Compared with conventional online aerosol monitors,the α and βdetection limits have been improved by two orders of magnitude,while also reducing both the workload of laboratory analysis for offline sampling and radiation exposure risks.关键词
高灵敏/在线监测/放射性气溶胶/响应时间/氡补偿Key words
high sensitivity/on-line monitoring/radioactive aerosol/response time/radon compensation分类
能源科技引用本文复制引用
商洁,冒学勇,杨屹,张艳婷,张富国,杨柳..双通道高灵敏放射性气溶胶在线监测仪的研制[J].辐射防护,2025,45(4):337-342,6.基金项目
放射性气溶胶动态辐射场重建测试创新平台建设(YDZJSX2024B015). （YDZJSX2024B015）
