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:: Volume 13, Issue 4 (10-2015) ::
Int J Radiat Res 2015, 13(4): 287-295 Back to browse issues page
The comparison between simple and advanced shielding materials for the shield of portable neutron sources
Jacob G. Fantidis Dr.
Eastern Macedonia and Thrace Institute of Technology , Fantidis@yahoo.gr
Abstract:   (6040 Views)

Background: Monte Carlo simulations play a vital role in the calculation of the necessary shielding both for neutrons and photons. Advanced and simple shielding materials against neutron and gamma rays were compared by simulation using the MCNB4B Monte Carlo code. The simulations were carried out for the three common neutron sources, namely the 252Cf, the 241Am/Be and the DD neutron generator which are suitable for transportable facilities. Materials and Methods: The source has been simulated as sphere with 3 cm diameter while the necessary shielding is designed in the form of a sphere around the neutron source. The materials considered were chosen according to the EU Directive 2002/95/EC, hence excluding lead and cadmium. Results: In the case of DD neutron generator the thickness, the weight and the volume of the shield can decrease up to 41.3, 44, and 78.4% correspondingly. With regard to the 252Cf neutron source the use of advanced shielding materials can reduce the corresponding parameters up to 32.7, 40.7, and 68.4% respectively. As regards the 241Am/Be neutron source, based on advanced shielding materials the thickness, the mass and the volume of the shield can decrease by 33.8, 49.5, and 70% respectively. Conclusion: The obtained results showed that the use of advanced shielding materials has led to reduce greatly the weight and the volume of the necessary shield.

Keywords: Shielding materials, MCNP, RoHS directive
Full-Text [PDF 805 kb]   (2852 Downloads)    
Type of Study: Original Research | Subject: Radiation Biology
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Fantidis J G. The comparison between simple and advanced shielding materials for the shield of portable neutron sources . Int J Radiat Res. 2015; 13 (4) :287-295
URL: http://ijrr.com/article-1-1583-en.html


Volume 13, Issue 4 (10-2015) Back to browse issues page
International Journal of Radiation Research
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