Effective atomic numbers and electron densities for some lanthanide oxide compounds using direct method in the energy region of 1 keV - 20 MeV

Year 2016, Volume: 6 Issue: 1, 7 - 12, 30.06.2016

Mehmet Büyükyıldız

https://doi.org/10.17678/beujst.07046

Cited By: 7

Abstract

In this paper, the effective atomic numbers and electron densities representing interaction of gamma rays with oxides of lanthanides have been studied. The effective atomic numbers for photon energy-absorption (Z_PEAeff) and photon interaction (Z_PIeff), and relative to air Z_Reff, the effective electron densities for photon energy-absorption (N_PEAeff) and photon interaction (N_PIeff) were calculated using the values of the mass attenuation and energy absorption coefficients. The variation of Z_PEAeff, Z_PIeff, Z_Reff, N_PEAeff and N_PIeff with energy were shown graphically. In the continuous energy region, it was observed that there are agreements and disagreements between photon interaction and photon energy-absorption for effective atomic numbers and electron densities of compounds in different energy regions. In addition, absorption edge effects on effective atomic numbers leading more than a single value of effective atomic number at a specific energy have been discussed for the given compounds. Comparisons with experiments wherever possible have been carried out for calculated values of Z_eff and N_eff.

Keywords

Lanthanides, Effective atomic number, Effective electron density, Radiation interaction

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