高氡环境下放射性气溶胶在线监测仪的研制  

Development of an on-line continuous aerosol monitor suitable for high radon environment

作　　者：孟丹[1] 杨柳[1] 马英豪[1] 畅翔 马弢[1] 张富国 杨屹[1] 商洁[1] MENG Dan;YANG Liu;MA Yinghao;CHANG Xiang;MA Tao;ZHANG Fuguo;YANG Yi;SHANG Jie(China Institute for Radiation Protection,Taiyuan 030006)

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《辐射防护》2020年第6期571-576,共6页Radiation Protection

摘　　要：通过粒度分离采样、真空测量模式、能量甄别法和α/β比值法的氡扣除技术的联合应用,扣除了绝大部分氡、钍及其子体对放射性气溶胶监测的干扰,研制出了高氡环境下放射性气溶胶在线监测仪,并将其在不同氡活度浓度的环境下进行了运行验证,效果良好。该监测仪适用于相关核设施等氡活度浓度较高的场所,为燃料泄漏检查等职业人员的辐射安全提供了重要保障。Through the combined application of radon subtraction technology of particle size separation sampling,vacuum measuring mode,energy screening method andα/βratio method,most of the interference of radon thorium and their daughters on radioactive aerosol monitoring has been deducted.And an on-line continuous aerosol monitor suitable for high radon environment was developed.It has been verified in operation under different radon concentrations and the effect is excellent.It is suitable for places with high radon concentration such as related nuclear facilities,and it provides an important guarantee for the radiation safety of professional personnel such as fuel leaking inspections.

关 键 词：高氡 气溶胶 粒度分离 真空测量 能量甄别 

分 类 号：TL811[核科学技术—核技术及应用]