The Effective Dose Equivalent for potassium K40 in Cow's Milk of Salah-Din Governorate/ Iraq

Radioactivity was measured for 170 cow's milk samples in Salah-Din governorate. Samples were by a gamma spectrometry system, using high purity germanium (HPGe) detector. The detector shielded 10 cm all sides with cadmium copper the inner sides. selected characteristic peaks detection of different ware 1460kev K-40. energy calibration performed set standard ray sources Eu-152. results show presence milk. maximum radioactivity seen Baiji city (424 Bq/kg), while minimum Abayaji (256 Bq/kg) and average (341.3 annual effective dose 0.302`mSv/y.That considered as limit rang public recommended FAO.