A New Approach for Measuring Indoor Radon, Thoron and There Progenies Using CR-39 and LR-115 SSNTDS

Develop a new method to measure alpha- and beta-activities per unit volume of indoor air due to radon, thoron and their progenies using LR-115 type II and CR-39 solid state nuclear track detectors (SSNTDs). In the present study we fuond in Al-bradhia Region in Basrah Governorate (Iraq), the value of radon concentrations ranges from 42 Bq.m-3 to 178 Bq.m-3 with an average value of 107 Bq.m-3 with standard deviation 38 Bq.m-3. The value of thoron concentrations ranges from 2 Bq.m-3 to 15 Bq.m-3 with an average value of 9 Bq.m-3 with standard deviation 3 Bq.m-3.