Determination of γ-spectrometric parameters for Na2CO3 and H2O in Na2CO3-water solution

The mass attenuation coefficients of Na2CO3 solved in water was measured for Na2CO3 contents up to 0.191 g of salt in cm3 of water at the energy of 0.662 MeV emitted from 137Cs. On the basis of the mixture rule the mass attenuation coefficients were calculated for the solutions at each salt content. Comparison between the measured and calculated values revealed, in general, those experimental values of linear and mass attenuation coefficients are smaller than the calculated ones. The total atomic cross-sections and effective atomic numbers were obtained for the mass attenuation coefficients. Least square method has been applied to determine the mass attenuation coefficients, atomic cross-sections, and the effective atomic numbers of Na2CO3 and water, separately, in the solution and compared with the corresponding calculated values.