Comparison of Gamma Radiation Shielding Parameters of Lead, Rhenium, and Elgiloy Alloy in Radiation Practices Using Geant4 Simulation Code
Abstract
This study compares the gamma radiation shielding performance of Rhenium (Re) and Elgiloy alloy with Lead (Pb) using the Geant4 Monte Carlo simulation code. LAC and HVL values of the materials were calculated and compared against the library data. Ten different energy levels which are ranging from 59.5 keV to 2.754 MeV were analyzed to represent the various radiation practices and interaction modes. Results indicate that Rhenium has better shielding performance than Lead mostly due to its higher density, and its Half-Value Layer (HVL) is approximately 40% lower than Lead at 662 keV. Although the Elgiloy alloy’s shielding performance is weaker than Lead, there are some studies demonstrating that it has some remarkable physical properties such as ultimate tensile strength and corrosion resistance. Thus, Elgiloy can be used as a structural component in radiation applications due to its physical strength and resistance. This study suggests that Rhenium can be a better shielding alternative to Lead. Especially in some medical and industrial practices where low volume and temperature resistance are main constraints. Additionally, Elgiloy can be considered as a supportive element in the structural body and as a complementary shielding layer under extreme environmental conditions.
Keywords
References
- AbuAlRoos, N. J., Baharul Amin, N. A., & Zainon, R. (2019). Conventional and new lead-free radiation shielding materials for radiation protection in nuclear medicine: A review. Radiation Physics and Chemistry, 165, 108439. https://doi.org/10.1016/j.radphyschem.2019.108439
- Agostinelli, S., Allison, J., Amako, K., Apostolakis, J., Araujo, H., Arce, P., Asai, M., Axen, D., Banerjee, S., Barrand, G., Behner, F., Bellagamba, L., Boudreau, J., Broglia, L., Brunengo, A., Burkhardt, H., Chauvie, S., Chuma, J., Chytracek, R., … Zschiesche, D. (2003). GEANT4—a simulation toolkit. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 506(3), 250-303. https://doi.org/10.1016/S0168-9002(03)01368-8
- Akman, F., Oğul, H., Turhan, M. F., & Ağrılı, C. Ş. (2024). Interactions between X-/gamma rays and alloys used in dental braces: A study on theory and simulations. Radiation Physics and Chemistry, 215, 111376. https://doi.org/10.1016/j.radphyschem.2023.111376
- Allison, J., Amako, K., Apostolakis, J., Arce, P., Asai, M., Aso, T., Bagli, E., Bagulya, A., Banerjee, S., Barrand, G., Beck, B. R., Bogdanov, A. G., Brandt, D., Brown, J. M. C., Burkhardt, H., Canal, Ph., Cano-Ott, D., Chauvie, S., Cho, K., … Yoshida, H. (2016). Recent developments in Geant4. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 835, 186-225. https://doi.org/10.1016/j.nima.2016.06.125
- Balat-Pichelin, M., Sans, J. L., Escape, C., & Combes, H. (2017). Emissivity of Elgiloy and pure niobium at high temperature for the Solar Orbiter mission. Vacuum, 142, 87-95. https://doi.org/10.1016/j.vacuum.2017.05.012
- Büyük, B., & Tuğrul, A. B. (2014). Comparison of lead and WCCo materials against gamma irradiation. Acta Physica Polonica A, 125(2), 423-425. https://doi.org/10.12693/APhysPolA.125.423
- Das, A., Ray, A., & Singh, T. (2023). Tungsten-based polymer composite, a new lead-free material for efficient shielding of coupled neutron-gamma radiation fields: A FLUKA simulation study. Physica Scripta, 98(11), 115302. https://doi.org/10.1088/1402-4896/acfa3e
- Mokhtari Dorostkar, M., & Abdi Saray, A. (2025). Comparative analysis of Monte Carlo simulations and experimental evaluation of PMMA reinforced with HgO for gamma radiation shielding. Scientific Reports, 15, 28286. https://doi.org/10.1038/s41598-025-14223-5
Details
Primary Language
English
Subjects
Radiation Technology
Journal Section
Research Article
Publication Date
June 30, 2026
Submission Date
January 20, 2026
Acceptance Date
April 17, 2026
Published in Issue
Year 2026 Volume: 13 Number: 2