Investigation of coherent/Compton scattering differential cross section ratios in Cu alloys as depending on chemical
E Urtekin1, E Kavaz2, U Perişanoğlu2
1Avrasya University, Vocational School of Health Services, Medical Services and Techniques, Audiometry, 61030, Trabzon, Turkey.
Abstract:
In this study, seven alloys with a nominal composition of (CuO2)0.5 M0.5 (M = Fe, Co, Ni, Cu, Zn, Y, and Nb wt%) were produced via the powder mixed method. Alloys and pure metals were excited with 59.54 keV photon energy emitted from Am-241 radioactive source at 25°, 35°, 45°, 55°, 65°, 75' and 85° scattering angles. The spectra of the coherent/Compton peaks were obtained by Si(Li) detector. First of all, chemical shift, (ΔE) peak energies, (E) asymmetry index (As) and full width half maximum (FWHM) values were found in the Compton/Coherent scattering spectra obtained depending on the scattering angle and the chemical environment of the transition metals. Then the ratios of the Coherent/Compton scattering differential cross-section (dσcoherent/dσCompton) were obtained experimentally. The experimental dσcoherent/dσCompton ratios of the selected 3d-4d transition metals were found to be compatible with the data in the literature. Asymmetry and chemical shifts were observed in almost all samples, especially in Compton peaks, with increasing scattering angles. The chemical shifts of Compton and Coherent peaks of the alloys were found in the range of 1-932 eV. The experimental dσkoherent/dσCompton ratios for the alloys obtained by adding Fe, Co, Ni, Cu, Zn, Y, and Nb to Cu2O were found as 0.697, 0.689 0.678, 0.698, 0.736, 0.755, 0.798, 0.835 at 45° scattering angle, respectively. It has been determined that the experimental dσcoherent/dσCompton ratio for each alloy increases with increasing atomic number, while it decreases with increasing scattering angle.
