Abstract
The present study was under taken to measure the uranium concentration in female teeth samples collected from different nationalities. The determination of uranium concentration in these samples has been done by using CR-39 track detector. The nuclear reaction is used as a source of nuclear fission fragments is (n,f) obtained by the bombardment of U-235 with thermal neutrons with flux (5x10 3 n/cm 2 .s) was used from ( Am-Be) neutron source. The concentration values were calculated by a comparison with standard samples which prepared. The obtained results show that the concentration is ranging from (0.58 0.7ppm) in Oman and Uae to (0.35 0.03ppm) in Iraqi for male, the uranium concentration was the highest in Oman and Uae for female.
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