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ARTICLE

Optical and radiation shielding characteristics of Dy₂O₃ doped B₂O₃–TeO₂–BaO glasses

S. H. Farhan^*, B. M. Al Dabbagh, H. Aboud

Applied Sci. Department, University of Technology, Iraq, college of sci., Al-Mustansiriya University, Iraq.

* Corresponding Author:

Chalcogenide Letters 2024, 21(6), 459-473. https://doi.org/10.15251/CL.2024.216.459

Received 02 March 2024; Accepted 12 June 2024;

Abstract

Glass samples with varying compositions was prepared by standard approach. The composition of the samples was (50-x) B₂O₃–25TeO₂–25BaO-xDy₂O₃, with x ranging from 0 to 1.25 mol%. XRD profiles confirmed that the samples were amorphous, as there were no long-range lattice arrangements observed. The successful preparation of amorphous samples was further confirmed by the absence of sharp lines & peaks. The optical properties of the obtained samples were analyzed. That a decrease in E_opt values resulted in a higher value of the refractive index (n) for the glasses. However, when the concentration of Dy₂O₃ exceeded certain levels (0.75, 1, and 1.25 mol%), the refractive index (n) decreased due to an increase in E_opt values. Experimental measurements using a NaI(Tl) detector were conducted to determine the radiation shielding parameters (LAC and MAC), as well as the (HVL), (TVL), & (MFP) of the glasses against gamma rays emitted by ¹³⁷ Cs and ⁶⁰ Co isotopes at energies of 0.662, 1.173, and 1.333 MeV. Excellent agreement was observed when comparing the experimental results with theoretical calculations using Phy-x/PSD software program. This suggests that the fabricated glasses have great potential for various applications in the field of optics and can effectively shield against radiation.

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Keywords

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