Investigation of the liquid density using Gamma scattering technique

Abstract

In this work, a gamma scattering technique using ¹³⁷Cs (5mCi) source with the NaI(Tl) detector is arranged to record the scattered photon beam at scattering angle of 120⁰ for investigating the liquid density. We used standard liquid such as water, H₂SO₄, HCl, glycerol, HNO₃, ethanol and A92 petrol to fit the single scattering peak, multiple scattering, and total counts versus standard liquid densities. The interpolating of the single scattering peak, multiple scattering, and total counts of the testing sample at scattering angle of 120⁰ is 0.702 g.cm^-3, 0.783 g.cm^-3, and 0.747 g.cm^-3, respectively. The discrepancy of the experiment and true testing density is about 8 %, 3 %, and 2 %, respectively. The result shows that  multiple scattering or total counts can be used to propose the density measurement.