A diffusion chamber for passive separated measurements of radon/thoron concentration in dwellings

The sensitivities have been measured by 2.06 and 0.053 [tracks cm−2(kBq m−3 day)−1] values for radon and thoron respectively inside of the chamber, and 7960 [tracks cm−2(kBq m−3 day)−1] value for thoron outside of the chamber. So the system can be successfully used for separated measurement of an extended range of radon/thoron concentrations in dwellings.