• Measurement of mass attenuation coefficients in some Cr, Co and Fe compounds around the absorption edge and the validity of the mixture rule

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      https://www.ias.ac.in/article/fulltext/pram/069/02/0199-0207

    • Keywords

       

      Absorption edge; mixture rule; mass attenuation coefficients; X-ray absorption fine structure.

    • Abstract

       

      The total mass attenuation coefficients for elements Cr, Co and Fe and compounds CrCl2, CrCl3, Cr2(SO4)$_{3}𝐾_{2}$SO4·24H2O, CoO, CoCl2, Co(CH3COO)2, FePO4, FeCl3·6H2O, Fe(SO4)2NH4·12H2O were measured at different energies between 4.508 and 14.142 keV using secondary excitation method. Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Rb, Sr were chosen as secondary exciters. 59.5 keV 𝛾-rays emitted from a 241Am annular source were used to excite a secondary exciter and K$_{\alpha}$ (K-L3, L2) lines emitted by the secondary exciter were counted by a Si(Li) detector with a resolution of 160 eV at 5.9 keV. It was observed that mixture rule method is not a suitable method for determination of the mass attenuation coefficients of compounds, especially at an energy that is near the absorption edge. The obtained values were compared with theoretical values.

    • Author Affiliations

       

      U Turgut1 O Şimşek1 E Büyükkasap1

      1. Department of Physics Education, Education Faculty, Atatürk University, 25240, Erzurum, Turkey
    • Dates

       
  • Pramana – Journal of Physics | News

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