| 220Rn室中220Rn浓度的调控研究 |
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| 引用本文： | 刘良军.220Rn室中220Rn浓度的调控研究[J].南华大学学报(自然科学版),2007,21(2):16-19. |
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| 作者姓名： | 刘良军 |
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| 作者单位： | 南华大学,氡实验室,湖南,衡阳,421001 |
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| 基金项目： | 湖南省科技厅重点资助项目(05FJ2003) |
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| 摘 要： | 描述了220Rn室的结构.探讨了用延时法调节220Rn浓度的方法.该方法可有效的调节箱体中220Rn浓度.用檀香燃烧的烟气作为气溶胶注入箱体中,测量了箱体中ThB(212Pb)浓度和气溶胶的关系.箱体中的气溶胶粒子浓度需大于104P/m3以上才能有效建立箱体中的ThB浓度.烟气气溶胶会堵塞气路,污染探测元件,有待以后研究改进.
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| 关 键 词： | 220Rn室 220Rn子体 浓度控制 |
| 文章编号： | 1673-0062（2007）02-0016-04 |
| 收稿时间： | 2006-12-25 |
| 修稿时间： | 2006-12-25 |
Study of 220Rn concentration control of 220Rn chamber |
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| LIU Liang-jun.Study of 220Rn concentration control of 220Rn chamber[J].Journal of Nanhua University:Science and Technology,2007,21(2):16-19. |
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| Authors: | LIU Liang-jun |
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| Institution: | Radon Laboratory,University of South China, Hengyang, Hunan 421001, China |
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| Abstract: | The structure of 220Rn chamber is described.The method of time-delay for control 220Rn concentration in the box is determined.The method can control the concentration of 220Rn effectively.The smoke of sandalwood is filled into the chamber as aerosol.The relation between the concentration of 212Pb and aerosol is measured.In order to accumulate 212Pb concentration in the box,the aerosol concentration must be more than 104 P/m3.It needs to improve,because the fume can plug gas circuit and contaminate the detective elements. |
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| Keywords: | 220Rn chamber 220Rn Progeny concentration control |
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