X-rays/gamma rays radiation shielding properties of Barium–Nickel–Iron oxide nanocomposite synthesized via low temperature solution combustion method

Shape-Controlled Iron–Paraffin Composites as γ- and X-ray Shielding Materials Formable by Warmth-of-Hands-Derived Plasticity

“…Similarly, decent shielding properties can be achieved for the Fe 3 O 4 –Al–PVA nanocomposite, 13 whose HVL value is lower than that of pure iron. HVL of other proposed shielding composites ranges from approximately 4 cm (for example, 3.82 cm for Ba–Fe–Ni oxide nanocomposite 9 ) to approximately 6 cm for α-Fe 2 O 3 -HDPE-40 wt % nanocomposite. 12 …”

“…Similarly, decent shielding properties can be achieved for the Fe 3 O 4 −Al−PVA nanocomposite, 13 whose HVL value is lower than that of pure iron. HVL of other proposed shielding composites ranges from approximately 4 cm (for example, 3.82 cm for Ba−Fe−Ni oxide nanocomposite 9 ) to approximately 6 cm for α-Fe 2 O 3 -HDPE-40 wt % nanocomposite. 12 Although the more protective nature of pure iron and other proposed micro-and nanocomposites is indisputable in comparison to the microcomposites investigated in our study, their use is limited; therefore, a wider application can be envisaged for the easily moldable iron-doped microcomposites.…”

“…8 According to the concept of Richard Feynman ('There's Plenty of Room at the Bottom', lecture presented at the American Physical Society at Caltech, in 1959), research on the properties of iron nanoparticles is continuously performed; however, considering nano-and microcomposites, the presence of this element is incipient. Sathish et al 9 proposed a nanocomposite synthesized via combustion from a mixture of Fe(NO 3 ) 2 •9H 2 O, Ba(NO 3 ) 2 , and Ni(NO 3 ) 2 •6H 2 O as oxidants and/or metallic precursors and urea (CH 4 N 2 O) as a fuel. The radiation shielding properties (X-rays and γ-rays) were established experimentally using different sources: 137 Cs (0.6615 MeV), 60 Co (1.173 and 1.332 MeV), 22 Na (0.511, 0.081 MeV), and 133 Ba (0.276 and 0.356 MeV) and theoretically with WinXCom software (from 1 keV to 100 GeV energy range) for various thicknesses: 5, 10, 15, 20, and 25 mm.…”

Composites cement/BaSO4/Fe3O4/CuO for improving X-ray absorption characteristics and structural properties

“…The performance lead supported by the high atomic number and mass density which are required for an effective photon shield. However, the intoxication of Pb in the human body and to the generation of secondary waste during the disposal of Pb has encourage researcher to find alternative materials for shield 22 , 23 . There are two possible ways of reducing Pb toxicity level: by mix with other materials and use Pb-free shielding in the form of nanocomposite materials.…”

“…For reducing Pb toxicity some reseacher was reported composite using natural polymer such as cement-based with additional Pb shows HVL of 0.004 cm −1 for 80 keV 24 and filler fly ash and sand with additional glass shows HVL of 0.11 cm −1 for 140 keV 25 . Materials for Pb-free shielding was reported from various researcher with the composition ratio of various polymers and filler with high-density metals or metal oxide 23 , 26 . These studies demonstrated that the performance of Pb-free shielding with linear attenuation coefficients improved because of high atomic number and high density which suitable for medical applications specially shiled radiation 27 – 29 .…”