期刊论文

中文

核电子学与探测技术

0258-0934

2017

37

3

289-294

10.3969/j.issn.0258-0934.2017.03.013

国家自然科学基金（11475082）资助；

本校为第一机构

实验研制了基于oα能谱法的222Rn/220Rn子体连续测量仪.该仪器采用微孔滤膜采样,采用PIPS探测器与α能谱测量技术实现222Rn、220Rn子体的α粒子计数与测量.实验测试表明:在不更换滤膜的前提下,可实现222 Rn/220 Rn子体的活度浓度及潜能的有限次连续测量;测222Rn、220Rn子体活度浓度的下限为10 Bq/m3,222Rn子体活度浓度为100 Bq/m3时的测量合成不确定度优于10％.

Based on the continuous measurement method of 220Rn progeny concentration, the 222Rn/ 220Rn Progeny Continuous measuring instrument has been developed by using microfiltration membrane to collect progenies, applying PIPS detector and measurement technology of α spectrum to count alpha particles. The experimental tests show that the instrument could continuously measure activity concentration and potential energy of 222Rn/220Rn progeny without replacing filter membrane frequently. The detection lower limit of measuring 222Rn, 220Rn progeny's ac...