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:: Volume 12, Issue 3 (7-2014) ::
Int J Radiat Res 2014, 12(3): 277-282 Back to browse issues page
Production of a novel high strength heavy concrete using tourmaline and galena for neutron and photon radiation shielding
S.M.R. Aghamiri , S.M.J. Mortazavi , M.A. Mosleh Shirazi , M. Baradaran-Ghahfarokhi , F. Rahmani , A. Amiri , S. Jarideh Dr.
Ionizing and Non-ionizing Radiation Protection Research Center, Shiraz University of Medical Sciences, Shiraz, Iran , sjarideh726@gmail.com
Abstract:   (4230 Views)

Background: High density concrete is extensively used for efficient radiation attenuation in radiotherapy rooms and nuclear reactors. Over the past eight years, some efficient galena-based concrete samples for shielding X or gamma rays was produced. The goal of this study was to produce a novel high density concrete against neutron and photon radiations using tourmaline and galena. Materials and Methods: Attenuation of gamma photons was measured using a Farmer type ionization chamber with a standard 60Co buildup cap on a Theratron 60Co therapy unit. Neutron shielding characteristics were measured by using an Am-Be source. The MCNP4C radiation transport computer code was used to investigate the effects of various shield thicknesses on the attenuation of gamma-ray photons and neutrons. Results: The concrete samples had a density of 4.0- 4.2 g/cm3. The compressive strength was 326 - 560 kg/cm2. The calculated value for Half Value Layer (HVL) of the tourmaline-galena concrete samples for 60Co gamma rays was 2.72 cm, which is much less than that of ordinary concrete (6.0 cm). The MC-derived HVL for photons with the same energy was 2.77 cm, which is in a good agreement with the experimental data. Moreover, ToGa concrete had up to 10 times greater neutron attenuation compared to that of the reference concrete. Conclusion: Tourmalin-Galena Concrete opens a new horizon in economic and efficient gamma/neutron shielding in high-energy radiotherapy bunkers, nuclear power plants, and shielding of radioactive sources.

Keywords: Heavy concrete, boron rich mineral, radiation shielding, Monte Carlo simulation
Full-Text [PDF 439 kb]   (1168 Downloads)    
Type of Study: Reviews and Perspectives | Subject: Medical Physics
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Aghamiri S, Mortazavi S, Mosleh Shirazi M, Baradaran-Ghahfarokhi M, Rahmani F, Amiri A et al . Production of a novel high strength heavy concrete using tourmaline and galena for neutron and photon radiation shielding. Int J Radiat Res. 2014; 12 (3) :277-282
URL: http://ijrr.com/article-1-1287-en.html


Volume 12, Issue 3 (7-2014) Back to browse issues page
International Journal of Radiation Research
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