Radon is a noble gas, therefore after recoil from the lattice, in which radium 226Ra was embedded, relatively easy moves in the fissures and cracks. The half-life of radon is long enough (3.83 days) to enable its movement. In confined spaces such as caves, underground mines or dwellings radon concentrations may sometimes reach high level.
A 8-day dataset from an air soil samples of Radon-222 was gathered. The diurnal variations of Rn-222 concentration were analysed. It has been found that radon concentration changes with the change of depth. There were observed changes of Radon-222 concentration along with changes of temperature. A design of an alternative method for measuring Rn-222 concentration was made.