Study of radon adsorption properties using activated carbon fibers

Activated Carbon Fiber (ACF) is an adsorbent with a large specific surface area and a well-developed pore structure. ACF has micropores on its surface and thus has excellent adsorption speed. Because of its high adsorption speed, it is highly effective in adsorbing trace contaminants in a single pass.

Radon is one of the major common backgrounds in underground experiments, including solar neutrino measurements and direct dark matter searches, and it is necessary to reduce radon as much as possible in order to achieve high-precision physical observations. The technique to measure radon at low-radioactivity levels is essential for screening detector components, etc.

The radon adsorption by ACF has potential applications in radon reduction and radon assay in underground experiments. This poster reports the results of radon adsorption tests using several ACFs in several gases.