Li HuiBin, Jia MingYan, Li GuoShen, Wang YinDong
Radiation Protection Laboratory, Department of Engineering Physics, Tsinghua University, 100086 Beijing, China.
Radiat Prot Dosimetry. 2012 Jan;148(2):258-62. doi: 10.1093/rpd/ncr020. Epub 2011 Feb 25.
Radon concentration is very high in underground basements and other facilities. Radon concentration in a nuclear facility locates in the granite tunnel can be as high as 10(4) Bq m(-3) in summer. Monitoring plutonium aerosol in this circumstance is seriously interfered by radon daughters. In order to solve this problem, a new continuous aerosol monitor that can monitor very low plutonium aerosol concentration in high radon background was developed. Several techniques were used to reduce interference of radon daughters, and the minimum detectable concentrations in various radon concentrations were measured.
地下地下室和其他设施中的氡浓度非常高。位于花岗岩隧道中的核设施内，夏季氡浓度可高达10⁴贝克勒尔每立方米。在这种情况下监测钚气溶胶会受到氡子体的严重干扰。为了解决这个问题，开发了一种新型连续气溶胶监测仪，它能够在高氡背景下监测极低浓度的钚气溶胶。采用了多种技术来减少氡子体的干扰，并测量了在各种氡浓度下的最低可检测浓度。
