期刊论文

Zhou, J.-B.

中文

核电子学与探测技术

0258-0934

2009

29

2

340-343

10.3969/j.issn.0258-0934.2009.02.026

本校为第一且通讯机构

文章提出了单小闪烁室采用延时法对~(222)Rn/~(220)Rn进行绝对测量的方案,并给出了使用~(222)Rn对这种方案进行验证的条件,设计了验证实验.实验结果表明,延时后小闪烁室的浓度与球形闪烁室作为参考值的偏差在-2.9%～+3.4%之间.从小闪烁室的浓度随时间的波动来看,延时后最佳测量氡的时间段是10～45分钟.实验证明采用单小闪烁室延时法对~(222)Rn/~(220)Rn浓度进行绝对测量是可行的.

A single small scintillation with delay-time method is used to measure radon and thoron concentrations in their mixed atmosphere-of absolute measurement of radon and thoron concentrations was discussed. The conditions of using radon to test this menthod was described and a experiment was designed to prove it. Compare to the reference number, Its margin of error was -2. 9%- ＋3. 4%, and the best time of the measurement of radon was 10-45 minutes. In conclusion, a single small scintillation cell could be use...