Enhancement of linear optical and dielectric properties as well as gamma-ray protection capacities of PbO reinforced in TeO₂-WO₃ glasses: Comparative study

Linear optical properties, optical dielectric constants, and dielectric loss as well as gamma-ray protection capacities of PbO reinforced TeO2-WO3 glasses with chemical composition 20WO(3)-(80 - x)TeO2-xPbO: x = 10 (WTPb1), 12.5 (WTPb2), 16.25 (WTPb3), 17.5 (WTPb4), and 20 (WTPb5) mol% have been investigated. Density of the investigated glasses gradually enhanced from 5.58 g/cm(3) for WTPb1 sample to 5.90 g/cm(3) for WTPb5 sample. The indirect optical energy band gap (E-optical) reduced from 2.28 to 2.10 eV. Urbach's energy (Delta E) improved from 0.225 to 0.255 eV with increasing PbO content mol%. Optical real (epsilon(1)), imaginary (epsilon(2)) parts of dielectric constant, dielectric loss (tan delta), the refractive index (n), and the extinction coefficient (k) were improved as PbO content enhanced in TWPb glasses. Insertion of PbO in the glass matrix has a direct constructive effect on both the mass (MAC) and linear (LAC) attenuation coefficients for all photon energy among all investigated samples. The highest values of MAC and LAC were possessed for WTPb5 sample, while the lowest values were possessed for WTPb1 sample. In terms of half-value layer (HVL) parameter, the lowest values of HVL were possessed for WTPb5. The effective atomic number (Z(eff)) of the WTPb glasses has a similar trend of MAC and LAC. Results confirm that WTPb glasses can be considered as a superior for radiation protection compared to some commercial concrete radiation shielding materials.

Journal

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING

Year

2022

Volume

128

Issue

9

ISSN

0947-8396

eISSN

1432-0630

DOI

10.1007/s00339-022-05931-0

WoS UID

WOS:000857202200003