Effectiveness of using Polyethylene and 5% Borated Polyethylene for Radiation Shielding in Spacecraft

Md Akhlak Bin Aziz, Md. Fazlul Huq, Zahid Hasan Mahmood, Khorshed Ahmad Kabir

Abstract


Polyethylene composites are good absorbers of low energy neutrons that can find applications as structural material inside spacecraft. Polyethylene and 5% borated polyethylene fabricated using conventional polymer processing techniques were evaluated for radiation shielding properties. Count rate variation of thermal neutrons was observed experimentally by placing sheets of polyethylene and 5% borated polyethylene of variable thickness in between an Americium-Beryllium source and He-3 detector and then compared with simulation results obtained by modelling the experimental setup using Monte Carlo n-Particle (MCNP) code version 4c. MCNP results verified the experimental findings that showed 5% borated polyethylene provides much improved radiation shielding compared to neat polyethylene.

Keywords


Polyethylene, Borated Polyethylene, Radiation Shielding, Thermal Neutrons.

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Dhaka University Journal of Applied Science & Engineering ISSN 2218-7413