一种调控氡子体平衡因子的高浓度单分散性气溶胶发生器的研制

辐射防护 ›› 2018, Vol. 38 ›› Issue (3): 228-233.

一种调控氡子体平衡因子的高浓度单分散性气溶胶发生器的研制

李斌^1,2, 梁珺成², 颜拥军¹, 杨志杰²

1.南华大学,湖南衡阳 421001;
2.中国计量科学研究院,北京 100029

收稿日期:2017-10-30 出版日期:2018-05-20 发布日期:2020-07-21
通讯作者: 颜拥军。E-mail:yan_jason@163.com
作者简介:李斌(1993—),男,2015年毕业于南华大学核物理专业,现为南华大学核科学与技术专业硕士研究生。E-mail:nidilibin@foxmail.com
基金资助:
国家重点研发计划项目(2016YFF0200803);国家自然科学基金资助项目(11505179)。

Development of a high concentration and mono-disperse aerosol generatorfor regulating radon progeny equilibrium factor

LI Bin^1,2, LIANG Juncheng², YAN Yongjun¹, YANG Zhijie²

1. University of South China, Hunan Hengyang 421001;
2. National Institute of Metrology, Beijing 100029

Received:2017-10-30 Online:2018-05-20 Published:2020-07-21

摘要/Abstract

摘要： 为了满足氡室内氡子体辐射场的调控要求,结合蒸发冷凝法的原理,利用电子烟发生器产生的癸二酸二辛酯(DEHS)与雾化器产生的NaCl颗粒结合再冷凝的方法,研制了高浓度单分散的气溶胶发生器。将该发生器应用于中国计量科学研究院20 m³氡室,充胶1分钟后气溶胶浓度最高可达到2.26×10⁵ cm^-3,平均粒径156.8 nm,单分散性1.38,氡室内氡子体平衡因子可调控达到0.65。

关键词: 高浓度气溶胶, 气溶胶发生器, 氡子体, 平衡因子

Abstract: To meet the requirements of regulating equilibrium factor of radon and its progency, a generator of high concentration and mono-disperse aerosol based on the evaporation-condensation method utilizing diethylhexylsebacate (DEHS) droplets produced by an electronic cigarette generator and NaCl particles produced by an atomizer was developed to produce high concentration and mono-disperse aerosol. This developed aerosol generator was used in an 20 m³ radon chamber of the National Institute of Metrology. After one minute injection, the highest concentration of aerosol approached 2.26×10⁵ cm^-3 with an average particle size of 156.8 nm and a mono-disperse degree of 1.38. The equilibrium factor of radon and its progeny can approach to 0.65 with regulating of the developed generator.

Key words: high concentration aerosol, aerosol generator, radon progeny, equilibrium factor

中图分类号:

TL75+2.3

李斌, 梁珺成, 颜拥军, 杨志杰. 一种调控氡子体平衡因子的高浓度单分散性气溶胶发生器的研制[J]. 辐射防护, 2018, 38(3): 228-233.

LI Bin, LIANG Juncheng, YAN Yongjun, YANG Zhijie. Development of a high concentration and mono-disperse aerosol generatorfor regulating radon progeny equilibrium factor[J]. RADIATION PROTECTION, 2018, 38(3): 228-233.