MEASUREMENT OF D2O IN WATER USING 2H(Y,N)1H REACTION

Utilization of Photodisintegration reaction of Deuterium, 2 H(γ,n) 1 H, is a precise technique for determining the percentage of 2 H in tritiated and natural water. The 23 Na(n,γ) 24 Na reaction is a suitable γ-source for producing the 2 H(γ,n) 1 H reaction. Tehran Research Reactor was used as a neutron source for producing 24 Na isotopes. The BF3 detectors were used to detect the neutron emission of H2 content of water. We obtained a linear calibration plot by repeating the experiment with many samples of different concentrations of tritiated water. With this simple portable apparatus which have been used for this purpose for the first time, and corresponding linear plot, we can monitor and determine easily and accurately the 2 H concentration of an unknown sample.