A Study of Gamma Ray Buildup Factor for Some Metal Oxide Mixed with Epoxy

Authors

  • Mustafa Y. Rajab Department of Physics, College of Science, Al-Nahrain University, Jadiriya, Baghdad, Iraq.
  • Kareem K. Mohammad Department of Bio-Mass, Al-Nahrain Renewable Energy Research Center, Al-Nahrain University, Baghdad, Iraq.

Keywords:

Gamma ray, Attenuation, Shielding, , buildup factor, epoxy.

Abstract

In the present research, the buildup factors were assessed for samples made of composite materials from epoxy as the basis material and reinforcing materials as metal oxides, BeO, MgO, TeO3, and Bi2O3 in different weight ratios, 10, 20, 30, and 40%. These samples are cylindrical in shape with a diameter of 2.5 cm and a height of 2 cm, that is the same thickness for all samples and irradiation by energy equal to 0.662 MeV from cesium radioactive sources Cs-137, which have the activity 9.49 µci. The obtained buildup factors were used 2"×2" Thallium-doped Sodium Iodide NaI(Tl) detector for sample analysis and measurement. Study results show that buildup factors decreased while concentrations in the reinforcing materials increased, and an inverse relationship between the density or atomic number of the material and the buildup factor.

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Published

2025-06-15

Issue

Vol. 28 No. 2 (2025): June 2025

Section

Mathematics

License

Copyright (c) 2025 Mustafa Y. Rajab, Kareem K. Mohammad

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

(1)
Y. Rajab, M. .; K. Mohammad, K. . A Study of Gamma Ray Buildup Factor for Some Metal Oxide Mixed With Epoxy. Al-Nahrain J. Sci. 2025, 28 (2), 139-143.