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^(220)Rn室中^(220)Rn浓度的调控研究 被引量:4

Study of ^(220)Rn concentration control of ^(220)Rn chamber
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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. 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 10^4 P/m^3. It needs to improve, because the fume can plug gas circuit and contaminate the detective elements.
作者 刘良军
出处 《南华大学学报(自然科学版)》 2007年第2期16-19,共4页 Journal of University of South China:Science and Technology
基金 湖南省科技厅重点资助项目(05FJ2003)
关键词 ^220Rn室 ^220Rn子体 浓度控制 ^220 Rn chamber ^220 Rn Progeny concentration control
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参考文献3

  • 1尚兵,朱力,任天山.中国部分城市室内氡浓度及控制对策探讨[C]//天然辐射引起公众照射及其控制研讨会.香港:1999.
  • 2UNSCEAR.Sources,effects and risks of ionizing radiation[R].New York:UNSCEAR Rep,2000.
  • 3UNSCEAR.Sources,effects and risks of ionizing radiation[R].New York:UNSCEAR Rep,1993.

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