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The investigation in this article focused on the role of La2O3 on the optical, physical, and radiation protection performance of La2O3-based glasses in the form 21.5SiO2-58.5B2O3-(20−x)ZnO:xLa2O3, where x , ( 0 ≤ x ≤ 10 ) mol%. The melt-quenching process was used to synthesize the glasses under study. Density results increased from 3.174 to 4.754, the values of the ( E opt. indi ) increased from 2.996 to 3.313 and ( E opt. di) increased from 3.364 to 3.689. Several radiation shielding factors have been evaluated to study the attenuation abilities of the ZBSL glasses and for all of them, there is a positive correlation between the mean free path (MFP) values and the incoming photon energy. The effective atomic number, Zeff, values increased for all the energies when La2O3 was employed in place of ZnO. Therefore, of all the competing shielding glasses and regular concrete, ZBSL10 glass is an excellent choice for shielding applications from gamma rays and neutrons. This study should be very beneficial for the design of these glasses or for the fabrication of new glasses for radiation protection. [ABSTRACT FROM AUTHOR]

The glasses with the composition (15-x) Na 2 O–45B 2 O 3 –20Bi 2 O 3 –20SiO 2 – x La 2 O 3 , where, x = (0 ≤ x ≥ 15) were successfully manufactured with a fast melt-quenching method. The density (ρ) of the glasses ranged from 4.913 to 6.497 g/cm3 and the molar volume (V m) ranged from 29.68 to 28.54 cm3/mol. FTIR spectroscopy to achieve further understanding of the structure of the synthesized glasses was performed. FT-IR spectra confirmed that the addition of La 2 O 3 modifies the glasses and broadens the absorption bands. The indirect and direct energy gaps increased as the amount of La 2 O 3 in the sample increased, according to UV–visible spectroscopic data. It was discovered that the refractive index ranged from 2.249 to 2.275. The study employed the DTA to explore the thermal features of synthesized glasses. The study employed the Phy-X/PSD code to explore the radiation-shielding properties of these samples. At low (E) of 0.015 MeV, the values of M A C were found to be 67.624, 67.739, 67.845, 68.032, and 68.193 cm2/g, while at (E) (15 MeV), which were 0.040, 0.041, 0.0413, 0.0418, and 0.042 cm2/g, in increasing order for the glasses BBSNLa-0, BBSNLa-2.5, BBSNLa-5, BBSNLa-10, and BBSNLa-15. Moreover, the values of μ m at (E) (15 MeV), which were 0.040, 0.041, 0.0413, 0.0418, and 0.042 cm2/g, for BBSNLa-0, BBSNLa-2.5, BBSNLa-5, BBSNLa-10, and BBSNLa-15 respectively. The combination of superior γ -radiation protection and favorable optical properties makes the BBSNLa-15 glass sample a promising candidate for applications in both optoelectronics and radiation protection. • The (15-x) Na 2 O–45B 2 O 3 –20Bi 2 O 3 –20SiO 2 – x La 2 O 3 , glasses were prepared. • Density increased from 4.913 to 6.497 g/cm3. • The glass thermal stability increased. • The BBSNLa-15 sample a promising candidate for applications in both optoelectronics and radiation protecting. [ABSTRACT FROM AUTHOR]

Glasses with the composition 48B 2 O 3 – 13SiO 2 – 7BaO- (32-x) Na 2 O-xY 2 O 3 , (x = 0, 1, 2, 4, and 8 mol %) were synthesized by the melt quenching procedure. There is good transparency in every glass sample. The increase in density (2.825–3.894 gm/cm3) of the present glasses is what triggered the decline in molar volume (25.41–21.80 cm3/mol) and the decrease in the Boron–Boron distance (0.475–0.452 nm). The estimated values show that E opt. indi. & E opt. di are 2.317, 2.672, 2.8, 2.98 and 3.1 eV, 2.69, 2.92, 3.05, 3.25, and 3.44 eV respectively, whereas (E u ) values declined. As the Y 2 O 3 increased the refractive index (n D) increased. (n D) of the synthesized glasses using E opt. indi. & E opt. di were estimated. To find the radiation properties of the suggested glasses, the Phy-X/PSD code was employed. We concluded that the current glasses have better radiation shielding capabilities when employed in such fields. As the Y 2 O 3 replacing ratio increased ∑ R increased. • The glass system 48B 2 O 3 – 13SiO 2 – 7BaO- (32-x) Na 2 O-xY 2 O 3 , x = (0 ≤ x ≥8) in mol% was prepared. • The density increased from 2.825 to 3.894 g/cm3. • As the Y 2 O 3 replacement ratio increased the refractive increased. • The glass sample G5 exhibited the best properties. [ABSTRACT FROM AUTHOR]