Design of a simple radon surface exhalation rate measuring device

Radon and its daughters is a major contributor to natural background radiation dose, and it is a hot research topic now. In this paper, a simple radon measuring device of surface exhalation rate is designed, and it can be used to measure the radon exhalation rate of some sample surface. To understand the performance of the device, the radon exhalation rate of different samples are measured, and the measurement also verified the anti-radon effects of certain anti-radon coating. The measurement result shows that the radon surface exhalation rate of the sample can be given more accurate by the measuring device, but the measurement takes a long time. The device is of stable performance, easy to operate, but has some room to improve. (authors)