期刊论文

The Research on Passive and Integrated Thoron Exposure Monitoring Techniques

中文

原子能科学技术

Atomic Energy Science and Technology

1000-6931

2001

35

4

325-330

10.3969/j.issn.1000-6931.2001.04.008

本校为第一机构

研究了平行测量氡、气土　 暴露量和加吸收体甄别掉氡的直接测量气土　 暴露量的两种方法 ,并建立了简易刻度系统。平行测量氡、气土　 暴露量时 ,两个相同剂量计的过滤窗分别装上不同滤材 ,使两个剂量计的扩散速率常数λd 存在一定的差异 ,而导致它们测量氡、气土　 时具有不同的响应。该方法测量氡、气土　 暴露量的探测下限分别为 0 74kBq·m- 3·h和 1 2 5kBq·m- 3·h。加吸收体甄别掉氡测气土　的方法是在CR 39SSNTD上加盖 4 5μm铝膜和 10 μmPE塑料膜甄别掉氡及其子体产生的α粒子 ,直接测量气土　 的衰变子体2 12 Po(ThC′)产生的部分α粒子。该方法测量气土　 暴露量的探测下限为2 2 ...

Both radon and thoron exposure monitoring method at the same time, and thoron exposure only monitoring method with absorber discriminating radon are developed. A simple calibration system is developed too. When radon and thoron exposure are measured simultaneously, two same dosimeters with different filter materials have the different diffusion rate constants λ d, and are of different response factors for radon and thoron. The lower limits of detection are 0.74 and 1.25 kBq·m -3 ·h for radon and thoron exposure measurement, respectively. Whe...