Solid State Nuclear Track Detectors (SSNTDs) of type CR-39 has been used in this study as a passive method to measure the radon activity concentration, radon exhalation rate (in terms of area and mass), and effective radon content in the pottery meal dishes of different origins (Germany, England, China, and Iran) in Erbil city. The RAD7 solid state detector has also used as an active method for measuring the radon activity concentrations from the measurement of alpha-particle track density. The results reveal that the highest exhalation rate and effective radium content of 0.690.035 mBq.m-2 .h-1 and 0.258±0.013 Bq.Kg-1 , respectively, were found in England meal dishes; while the lowest exhalation rate and effective radium content of 0.1960.0098 mBq.m-2 .h-1 and 0.106±0.005 Bq.Kg-1 , respectively, were found in China meal dishes. It is concluded that the radon exhalation rate from the pottery dishes has significant contribution to the indoor doses that should be taken into account.

In this study the assessment of indoor radon concentration in the air of Qaysare in Erbil city have been studied by using CR-39 Solid-State Nuclear Track Detector Technique. A total of 18 selected zones inside the suq have been selected to place the dosimeters. The average radon concentration was found to be 21.54 ± 8.017 Bq/m 3 ,which is fortunately lower than the standard international limit from 200-600 Bq/m 3 as recommended by ICRP, IAEA. The potential alpha energy concentration and annual effective dose have been calculated. A proportional relationship between the annual effective dose and radon concentration within the studied region has been certified.