Physics

New plastic composite shields effectively block harmful radiation using tungsten and bismuth oxides

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Gamma-rayComposite materialRadiation shielding

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This study investigated the radiation shielding properties of polymethyl methacrylate (PMMA) composite materials enhanced with tungsten trioxide (WO3) and bismuth oxide (Bi2O3) nanoparticles. Researchers conducted experimental measurements of gamma-ray attenuation and validated their results using Monte Carlo simulation methods. The composite materials demonstrated improved radiation shielding effectiveness compared to pure PMMA, with performance dependent on the concentration and combination of the metal oxide additives.


These findings could lead to development of lighter, more flexible radiation shielding materials for medical imaging facilities, nuclear installations, and space applications. PMMA-based composites offer advantages over traditional lead shielding including reduced weight, non-toxicity, and easier fabrication into complex shapes.


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Source: Experimental investigation and Monte Carlo validation of PMMA-based WO3- Bi2O3 radiation shield