Radon Doses in Slovenian Schools Based on Alpha Spectroscopy

Janja Vaupotič*, Ivan Kobal

Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia

Absrtract

Indoor air concentrations of radon and radon short-lived decay products, equilibrium factor, unattached fraction of radon short-lived decay products (f_un), relative humidity and temperature have been measured in Slovenian schools, with an emphasis on f_un as the crucial parameter in dose assessment. f_un ranged from 0.03 to 0.21. Dose conversion factors, based on these values, exceeded 5 mSv/WLM, the value recommended by ICRP-65, in all schools.

Key words: radon unattached fraction, dose conversion factors