Sohrabi M, Ebrahiminezhad F
Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran.
Radiat Prot Dosimetry. 2019 Oct 1;184(3-4):466-469. doi: 10.1093/rpd/ncz098.
A new multi-purpose polycarbonate track detector (PCTD)/activated-carbon-fabric (ACF) radon monitor has been recently developed in our laboratory, a basic design of which was used for parametric studies. One 500 μm thick PCTD (3 cm x 3 cm) is used bare for detecting alphas from radon and progeny directly from air and another PCTD (3 cm x 3 cm) covered by an ACF layer (PCTD/ACF) to enhance the PCTD response by radon adsorption on its carbon active sites. The PCTDs were processed by 50 Hz-2 kV electrochemical etching method. The ACF/PCTD sensitivity was enhanced in respect to the PCTD/bare with an amplification factor (AF) defined as ratio of track density on PCTD under ACF to that of PCTD bare. Many ACF-related parameters studied affect the PCTD/ACF response among them thermal annealing of ACF, ACF thickness and distance of ACF layer to the PCTD are reported and discussed in this paper.
我们实验室最近开发了一种新型多功能聚碳酸酯径迹探测器（PCTD）/活性炭织物（ACF）氡监测仪，其基本设计用于参数研究。一个500μm厚的PCTD（3cm×3cm）直接裸露用于检测空气中氡及其子体产生的α粒子，另一个PCTD（3cm×3cm）覆盖有ACF层（PCTD/ACF），通过氡在其碳活性位点上的吸附来增强PCTD的响应。PCTD采用50Hz - 2kV电化学蚀刻法处理。相对于裸PCTD，ACF/PCTD的灵敏度有所提高，放大因子（AF）定义为ACF下PCTD上的径迹密度与裸PCTD上的径迹密度之比。本文报道并讨论了研究的许多与ACF相关的参数对PCTD/ACF响应的影响，其中包括ACF的热退火、ACF厚度以及ACF层与PCTD之间的距离。
