Exposure rates and radiation doses due to ambient gamma rays/Anbar governorate.

Abstract

Radiation exposure rates and radiation doses were measured in 174 locations in the Western Desert. Exposure rates were measured 1m above the ground with NaI (Tl) scintillation detector. Total radiation doses due to external exposure to the ambient gamma ray in the same previous locations were measured with FAG-FH 40 F2. The radioactivity concentrations of 238U, 232Th and 40K in selected soil and rocks samples were measured using gamma spectroscopy system based on high purity Germanium detector. Then, absorbed doses due to presence of 238U, 232Th and 40K in the samples were estimated. The exposure rates ranged between (5.0-71.7) ىR/h, while the average of radiation dose due to the exposure to ambient gamma ray ranged between (0.7-3.32) mSv/y. Doses due to expose to the concentrations of 238U, 232Th and 40K in the soil and rocks of the Western Desert were calculated. The average of these exposure doses ranged between (0.03-1.84)mSv/y.

Keywords

• exposure rates
• radiation
• ambient
• gamma rays
• anbar