Abstract
Lead is a traditional shielding material for gamma radiation protection, in spite of its disadvantages such as high density, toxicity and high cost. New shielding materials that have the same effective attenuation and have more advantages are studied. The aim of this work is to prepare new nano-composite material shield (nontoxic, light, and environmental friendly) that minimize the radiation hazards. Polymers are safe and light materials but on their own aren't effective in radiation shielding. The idea is to use a high-density metal which is the most effective materials in shielding with polymers which have the property of lightness and flexibility. A new nano-composite will be produced with improved advantage in shielding martials. In this study, high‑density metal is the nano tungsten oxide powder that can be mixed with poly vinyl alcohol. Using a certain amount with different concentrations of nano tungsten oxide powder in the polymer matrix. The composite sheets have been obtained by casting method with different thickness for each concentration. The nano-composite can be tested by Geiger-Muller counter for attenuation measurements. According to results, a new shielding material is efficient for gamma radiation protection.
Highlights
Unwanted exposures to high energy ionizing radiation cause hazards to health
The X-ray diffraction patterns of the prepared WO3/PVA composite films illustrated in the figures (1, 2, 3, 4) for nano composite sheets show that the intense characteristics peaks of WO3 is gradually increase due to increasing the concentration of tungsten oxide nanoparticles
To investigate the experimental shielding property for WO3/PVA nanocomposite sheets we studied the relationship between the concentration of nano WO3 in sheets and count rate of photon energy [I-131(364keV) by using GM detector with different thickness of sheets that illustrated in Table (1)
Summary
Unwanted exposures to high energy ionizing radiation cause hazards to health. Protection ways are required to minimize hazards form the ionizing radiation. There are three arms of protection from radiation which are time, distance and shielding. There is no special shielding material for alpha particles because of their big size. Even thin paper or human skin could block alpha particles. Beta particles are smaller than alpha particles so they penetrate human body that is why using aluminum shield is required. Gamma rays are waves and they have no mass and high energy. Materials with high density could block gamma rays. When gamma energy is increased the thickness of materials should be increased in order to maximize the probability of blocking the gamma rays [1]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
