氡测量仪检定/校准装置的研制  

Development of radon monitor verification/calibration device

作　　者：唐方东[1] 何林锋[1] 张雄杰[2] 汤彬[2] 

机构地区：[1]上海市计量测试技术研究院,上海201203 [2]东华理工大学,江西抚州344000

出　　处：《中国测试》2010年第1期57-60,共4页China Measurement & Test

基　　金：国家973计划项目(2006CB708409);国家质检总局科技计划项目(2007QK105)

摘　　要：为建立氡测量的计量标准,研制以多功能的标准氡室为核心的氡测量仪检定/校准装置。采用氡浓度动态稳定技术以实现氡浓度的自动调控;设计用夹胶钢化玻璃制作氡室以减少箱体对氡的吸附,并具有良好的保温效果;设计制作温湿度调控系统和气溶胶发生与采集装置,实现氡子体放射性气溶胶的检测功能。装置氡室体积为4m3,氡浓度测量范围为370～20000Bq/m3,氡浓度值测量结果的相对扩展不确定度不超过5.8%,可用于测氡仪器的检定校准和氡子体放射性气溶胶的实验研究。In order to establish a metrological standard for the radon measurement, a radon monitor verification/ calibration device was developed, in which the muhifunctional standard radon chamber was a core part. A technique of dynamic stability had been adopted to control the radon concentration automatically. A radon chamber made by tempered glass of adding glue was to lower the radon adsorption and had good heat preservation. A temperature and humidity control device and an aerosol generator and collection device were designed to study radioactive aerosol. The volume of radon chamber is 4 m3, the range of radon concentration is 370-20 000 Bq/m3, and the relative expanded uncertainty of measurement results is no more than 5.8%. The whole testing system can verify/calibrate the radon monitor and study on the radioactive aerosol of radon decay product.

关 键 词：放射性计量学 检定/校准装置 氡浓度动态稳定 标准氡室 氡测量仪 

分 类 号：O613.16[理学—无机化学] TM930.113[理学—化学]