Determination of Atomic Number Exponent for Elemental Absorber at Am– 241 Energy in X–Ray Attenuation Experiments

Authors

  • Laith Ahmed Najim Department of Physics, College of Science, University of Mosul, Mosul-Iraq
  • Sabeeh Karyakos Shamoon Department of Physics, College of Science, University of Mosul, Mosul-Iraq.
  • Shiama Talal Atalah Department of Physics, College of Science, University of Mosul, Mosul-Iraq.

Keywords:

Photoelectric effect, Cross section, Mass absorption coefficient, Arial density

Abstract

In X-ray absorption experiment, the dependence of the photoelectric absorption cross-section
varied with atomic number Z. In this paper, the dependence on Z of the cross – section or
coefficient of photoelectric absorption is first evaluated from published data for (20) elements
ranging from Al–Sn, and then the cross–section for Fe is obtained experimentally by measuring the
X-ray intensity with and without the Fe absorber and compared with the theoretical value, the
variation of the photoelectric absorption coefficient (μ/ρm) showed less dependence on Z for the two
tested of Z regions. This is because of the inclusion of mass density (ρm) of the absorber in the
coefficient. The values of m obtained in the present work increases linearly with energy for both
ranges of elements.

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Published

2012-09-01

Issue

Vol. 15 No. 3 (2012): September

Section

Articles

How to Cite

[1]
“Determination of Atomic Number Exponent for Elemental Absorber at Am– 241 Energy in X–Ray Attenuation Experiments”, ANJS, vol. 15, no. 3, pp. 95–100, Sep. 2012, Accessed: May 02, 2024. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/812