Measurement of radon concentration in Taiz city dwellings-yemen

Radon gas considered being a high part of natural radiation background. Emitting alpha particles; radon daughters may be deposited into the lungs and cause health hazards. For this reason, estimation of radon levels in dwellings was done in many countries. In our country, Radon group in the Department of physics, University of Aden has been studied radon level in Aden dwelling. The present study is about the radon level in Taiz City - Yemen. Passive diffusion dosimeters containing (SSNTDs) Cr - 39 detectors were used in the present work. 125 dosimeters were distributed into dwellings of ten regions in Taiz City. Results obtained show that Rn222 levels vary between 4 Bq/m3 and 99 Bq/m3. The average concentration in Al-Hasseb district is 23 Bq/m3 and in Algumhuri hospital district is 53 Bq/m3. In other regions it varies between the two values. Whereas the general average in the Taiz City is 34 Bq/m3. (author)