Abstract
Effective atomic number ( Z eff ) and electron density ( N eff ) are convenient parameters used to characterise the radiation response of a multi-element material in the technical and industrial applications, radiation shielding design, absorbed dose and build-up factor calculations. Thus, it is very significant to choose accurate method to determine these parameters unambiguously. In the present study, effective atomic numbers and electron densities of different types of materials have been calculated by using a direct method and an interpolation method for total photon interaction in the energy region of 1 keV to 100 GeV. In addition, agreements and disagreements of the used methods have been discussed, and from the results, significant variations have been observed between the methods used to compute for the materials in the different energy regions.
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