Measurement and study linear attenuation coefficient of x-ray for epoxy/titanium oxide composites

Abstract

In this study, X-ray attenuation measurements for voltages (20, 25, 30, 35) KV using X-ray unit with copper X-ray tube were performed for the composites material that consist of epoxy as a matrix and titanium oxide as a reinforced at concentrations ( 4 and 6 Wt. %) which was prepared by hand- lay-up method by using mechanical mixer . The linear attenuation coefficient (μ) was obtained by linear equation of the graph representation output between the logarithm of absorption and the thickness of the samples where the slope of the graph represents the linear attenuation coefficient. The obtained results showed that the linear attenuation coefficient increased by increasing the weight percentage of titanium oxide and the highest value obtained at 6Wt .% . The inverse relation between the linear attenuation coefficients of the composite samples with the x-ray voltage was also concluded. The values of mean free path (λ), halve value layer (HVL) and tenth value layer (TVL) was calculated in this study, the results were shown that the values of λ, HVL, and TVL, for pure epoxy is greater than its values of the composite material with 4and 6 Wt. % of TiO2 at all values of voltages mentioned above. The results obtained showed the efficiency of the prepared composites in the X-ray absorption and attenuation, this efficiency is relatively variable depending on the ratio of the reinforced material TiO2 which demonstrating the great and a positive effect of it on the radiation shielding properties of the epoxy polymer.