The molecular (), atomic (), electronic () cross-sections and the total mass attenuation coefficient () values of barium compounds are determined both experimentally and theoretically. The most interesting result of this study is that the effective , , cross-section values are not as expected near the absorption edge. The results have been compared with some other theoretical values in literature due to these unexpected behaviours. The link between the , , values and the cross-section , , and values are also investigated with the absorption jump factor (J).
Key words: Mass attenuation coefficient, molecular, atomic and electronic cross-sections, jump ratio.
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