International Journal of Radiation Research

en Monte Carlo simulations of gamma-rays shielding with phthalonitrile - tungsten borides composites Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;">Background: Recently, it has been demonstrated that thermosetting polymer composites have excellent gamma-rays shielding properties. Among them, phthalonitrile composites are the best suitable materials to replace the traditional shielding materials such as lead and concrete. Furthermore, tungsten-boride as high Z-material is an effective ionizing radiation shield. Materials and Methods: The gamma rays shielding properties of the phthalonitrile matrix (PH) reinforced with tungsten-boride (WB) at 661, 1172, and 1332 keV photon energies were investigated using MCNPX code and XCOM tool kit and compared to those of concrete as conventional shielding material and epoxy composites. MCNPX geometry was defined along the z-axis and described in the input file. The number of emitted photons was fixed at 107 at the source, which is supposed to be a monoenergetic point. Results: The simulated mass attenuation coefficients results are in good agreement with those calculated using the XCOM tool kit. Also, it was observed that at 661 keV photon energy, the shielding performances in term of Half-Value-Layer (HVL) are enhanced by3.08% and 22.01% for 30% and 50% of tungsten-boride concentrations compared to 30% of PbO concentration in the Epoxy-Clay composite and concrete respectively. Conclusion: In this study, the outstanding results of gamma-rays shielding properties of Phthalonitrile/WB composites (PHWB) obtained using MCNPX code and XCOM can be used for future experimental gamma-rays shielding approaches at a wide range of energy.</div> Phthalonitrile, MCNPX, XCOM, radiation protection efficiency, gamma-rays. 621 626 http://ijrr.com/browse.php?a_code=A-10-1-954&slc_lang=en&sid=1 M. Al Hassan wlwb@163.com 7900319475328460022076 7900319475328460022076 Yes College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China W.B. Liu 7900319475328460022077 7900319475328460022077 No College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China J. Wang 7900319475328460022078 7900319475328460022078 No College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China M.M.M. Ali 7900319475328460022079 7900319475328460022079 No College of Nuclear Sciences and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang, China A. Rawashdeh 7900319475328460022080 7900319475328460022080 No Jordan Atomic Energy Commission, Jordan Research and Training Reactor, Jordan