Online radon and thoron monitors have been developed using ZnS(Ag) detector for continuous monitoring of concentrations in occupational and general environments. Their performance has been tested successfully both in laboratory and field conditions. Special features of these monitors include low cost, high sensitivity and non-interference of humidity and trace gases. The capability of these rad...

Prior to large earthquakes (e.g. 1995 Kobe earthquake, Japan), an increase in the atmospheric radon concentration is observed, and this increase in the rate follows a power-law of the time-to-earthquake (time-to-failure). This phenomenon corresponds to the increase in the radon migration in crust and the exhalation into atmosphere. An irreversible thermodynamic model including time-scale invari...

The present study involves the measurement of radionuclide contents and radon/thoron exhalation rate in soil samples collected from 30 villages Jammu district, J & K, India. Thallium-doped sodium iodide detector advanced Smart Rn Duo monitor were used for rates. radon flux was also measured by using a surface chamber technique. mass has been found to vary 15 ± 0.4 38 0.8 mBq kg?1 h?1, while tho...