Akademik Veri Yönetim Sistemi
13th INTERNATIONAL MARDIN ARTUKLU SCIENTIFIC RESEARCHES CONFERENCE, Mardin, Türkiye, 13 - 15 Ocak 2025, ss.350-361, (Tam Metin Bildiri)
This study aims to theoretically examine the radiation
shielding properties of lanthanide oxide-doped zinc telluride-based glasses. Lanthanide
oxides were added to the 80%TeO2-20%ZnO base structure at 4% mol,
adhering to the composition of 0.9(80% TeO2-20%ZnO)-4%(REE)2O3.
Densities of 16 different glass samples were calculated theoretically, the
glass with the lowest density was determined as TZ (TeO2-ZnO) glass with a value of 5.658 g.cm-3, and
the glass with the highest density was determined as TZLu (TeO2-ZnO-Lu2O3) glass with a value of 5.8229 g.cm-3. Using
the densities and compositions, the mass attenuation coefficient (MAC), linear
attenuation coefficient (LAC), half value layer (HVL), mean free path (MFP),
effective atomic number (Zeff) parameters of each sample were
obtained using Phy-X/PSD software. While calculating these parameters,
characteristic gamma energies of Na-22, Co-60, I-131, Cs-137 radiation sources
were used. The results showed that the lanthanide oxide addition increases the
radiation absorption capacity of the glasses. TZLu glass outperformed other
glasses with a MAC value of 0.093 cm²/g for Na-22 gamma rays with energy of
0.511 MeV. Similarly, the I-131 isotope reached the highest MAC value of 0.129
cm²/g at the energy of 0.3645 MeV. In terms of LAC, TZLu glass has an effective
linear attenuation coefficient of 0.524 cm⁻¹ at 0.511 MeV energy. In HVL value,
TZLu glass had the lowest value at 1.279 cm at an energy of 0.511 MeV. MFP
values also confirmed the superior performance of TZLu glass compared to
other glasses. While the MFP value of the Na-22 isotope at 0.511 MeV energy in
TZ glass was 1.969 cm, it was measured as 1.845 cm in TZLu glass. While the MFP
value of the I-131 isotope at 0.3645 MeV energy was 1.463 cm in TZ glass, it decreased
to 1.335 cm in TZLu glass, and it was shown that the lanthanide addition
increased the shielding efficiency. In the Zeff evaluation, TZLu glass achieved
a better value than other glasses with 25.99 at 0.511 MeV. Additionally, the
decrease in HVL and MFP values at 1.275 MeV energy shows that lanthanide addition
increase the shielding effectiveness at high energies. These results reveal
that TZLu glass, which has good performance against both low and high-energy
gamma rays, can be an alternative material for radiation shielding.