Hazardous-free alternatives for radiation shielding in medical diagnostics: BaO-doped TeO2-ZnO-CaO-B2O3 glass system
Source abstract
Abstract
In this research work , a safe and hazard-free alternative to lead was investigated through the BaO-doped TeO 2 -ZnO-CaO-B 2 O 3 glass system, with BaO ranging from 5 to 30 mol%. The lead-free BaO-doped TeZnCaB glass systems have been synthesized by the melt-quenching method. X-ray diffraction (XRD) analysis confirmed the glassy structure of the BaO-based samples. The density of the developed glass samples was increased by doping the BaO concentration, ranging from 4.292 to 4.725 g/cm 3 . The structural features and vibrational modes of the BaO-based glass system were analyzed by FTIR (Fourier-transform infrared spectroscopy) and Raman spectroscopy , which revealed the existence of TeO 4 , TeO 3 , BO 4 and BO 3 structural units within the glass system. UV–visible characterization revealed that the optical energy band gaps were dropped with the BaO content, while the refractive index was enhanced. X-ray attenuation characterization was carried out to determine the shielding performance of the lead-free BaO-doped TeZnCaB glass system. It was observed that the LAC (linear attenuation coefficient) increased from 13.01645 to 16.23911 cm −1 at 100 kVp with the addition of BaO concentration in the TeZnCaB glass samples. Moreover, increasing the BaO content in the developed glass samples resulted in a reduction in the MFP (mean free path), indicating improved radiation shielding efficiency. The glass samples with higher BaO contents demonstrated the best attenuation performance (shielding efficiency ∼ 99 %) and the Ba30 sample (i.e. the sample doped with 30 mol% BaO) exhibited the highest LET (lead equivalent thickness) of 2.627 mm. These glass samples could serve as a hazardous-free alternative, making them an effective and environmentally friendly radiation shielding choice for medical diagnostics applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Radiation Shielding Materials Analysis · Radiation Dose and Imaging · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (100+)
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