Indoor radon concentration levels in Amman, Zarka and Sault

Indoor radon concentration levels in three main cities of Jordan have been measured using CR-39 polymeric nuclear track detectors. CR-39 detectors were placed in polyethylene bags and cups. These bag and cup dosimeters were installed in randomly selected houses. The average value of indoor radon concentration level in the city of Amman was found to be 41.3Bq m−3 with cup dosimeters and 42.6 Bq m−3 with bag dosimeters. For the district of Zarka, the average value of indoor radon concentration level measured with bag dosimeters was 33.9Bq m−3 , whereas with cup dosimeters the level was 30.7 Bq m−3. For Sault and its suburbs, the average value of indoor radon concentration level was found to be 51.2 Bq m−3 with bag dosimeters and 49.8 Bq n−3 with cup dosimeters.