Determination of effective atomic numbers in some compounds for photoelectric process at 59.54 keV by using different methods

Article type: Research Article

Authors: Kurudirek, Murat | Özdemir, Yüksel

Affiliations: Faculty of Science, Department of Physics, Ataturk University, Erzurum, Turkey

Note: [] Corresponding author. Tel.: +90 442 2314167; Fax: +90 442 23609 48; E-mail: [email protected]

Abstract: The total photoelectric cross sections, σ_{pe}, of some compounds have been determined from the measured total attenuation cross sections by subtracting the scattering contributions at 59.54 keV. The values of σ _{pe} were then used to compute effective atomic numbers, Z_{eff} for photoelectric process at 59.54 keV. Different methods such as a direct method, an interpolation procedure and an empirical relation were employed to calculate effective atomic numbers for different compounds wherever possible. Merits and demerits of the used methods were also discussed. The obtained values of σ _{pe} and Z_{eff} from the measurements were compared with the calculated ones from theory.

Keywords: Photoelectric cross section, effective atomic number, effective electron density

DOI: 10.3233/XST-2010-0253

Journal: Journal of X-Ray Science and Technology, vol. 18, no. 2, pp. 183-191, 2010