| 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 |
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| 引用本文： | 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. |
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| 作者姓名： | 李斌 梁珺成 颜拥军 杨志杰 |
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| 作者单位： | 1.南华大学,湖南 衡阳 421001; 2.中国计量科学研究院,北京 100029 |
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| 基金项目： | 国家重点研发计划项目(2016YFF0200803);国家自然科学基金资助项目(11505179)。 |
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| 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。
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| 关 键 词： | 高浓度气溶胶 气溶胶发生器 氡子体 平衡因子 |
| 收稿时间： | 2017-10-30 |
Development of a high concentration and mono-disperse aerosol generatorfor regulating radon progeny equilibrium factor |
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| 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. |
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| Authors: | LI Bin LIANG Juncheng YAN Yongjun YANG Zhijie |
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| Affiliation: | 1. University of South China, Hunan Hengyang 421001; 2. National Institute of Metrology, Beijing 100029 |
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| 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. |
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| Keywords: | high concentration aerosol aerosol generator radon progeny equilibrium factor |
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