@Article{CL.2024.216.459,
AUTHOR = {S. H. Farhan, B. M. Al Dabbagh, H. Aboud},
TITLE = {Optical and radiation shielding characteristics of Dy<sub>2</sub>O<sub>3</sub> doped B<sub>2</sub>O<sub>3</sub>–TeO<sub>2</sub>–BaO glasses},
JOURNAL = {Chalcogenide Letters},
VOLUME = {21},
YEAR = {2024},
NUMBER = {6},
PAGES = {459--473},
URL = {http://www.techscience.com/CL/v21n6/64956},
ISSN = {1584-8663},
ABSTRACT = {Glass samples with varying compositions was prepared by standard approach. The 
composition of the samples was (50-x) B<sub>2</sub>O<sub>3</sub>–25TeO<sub>2</sub>–25BaO-xDy<sub>2</sub>O<sub>3</sub>, 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<sub>opt</sub> values 
resulted in a higher value of the refractive index (n) for the glasses. However, when the 
concentration of Dy<sub>2</sub>O<sub>3</sub> exceeded certain levels (0.75, 1, and 1.25 mol%), the refractive 
index (n) decreased due to an increase in E<sub>opt</sub> 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 
<sup>137</sup>
Cs and 
<sup>60</sup>
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.},
DOI = {10.15251/CL.2024.216.459}
}