期刊论文

Study on the Effect of Alpha Radioactive Aerosols Deposition on Microfiltration Membrane Self- Absorption

Xiao, D.-T.

中文

核电子学与探测技术

0258-0934

2015

35

4

347-349and353

10.3969/j.issn.0258-0934.2015.04.008

国家自然科学基金（11375083,11475082）； 衡阳市科技计划项目（2013KJ30）资助；

本校为第一且通讯机构

模拟基于α能谱法的混合222 Rn、220 Rn子体测量程序，分别就醋酸纤维素酯微孔滤膜对222 Rn、220 Rn各α放射性子体的自吸收进行了实验研究。研究结果表明：该滤膜对222 Rn、220 Rn 子体的自吸收以及同种滤膜间的差异较小，可取0．978为α能谱法（或总α法）的滤膜自吸收因子；微孔滤膜模拟α能谱法以120 min为测量周期，重复使用时沉积在滤膜表面的α放射性气溶胶对滤膜自吸收的影响可忽略。

The self-absorption of cellulose acetate microfiltration membrane with alpha radioactive 222Rn, 220Rn progeny have been studied by simulating the alpha spectroscopy-based measurement method procedure of hybrid 222Rn, 220Rn progeny. The experimental results show that, the difference of membrane self-absorption between 222Rn progeny and 220Rn progeny is very small and doesn't vary with membrane, and can take 0.978 as alpha Spectroscopy (or gross alpha counting method)'s membrane self-absorption factor when measuring concentration of hybrid 222Rn ...