Characterization of optical and radiation shielding behaviors of ferric oxide reinforced bismuth borate glass

Abstract

This study aimed to investigate the ferric oxide effect on optical and radiation shielding behaviors of bismuth borate glasses. Gamma-ray attenuation competencies of six glass samples along with optical properties were investigated in terms of their utilization suitability as a shield or personal protection equipment in industrial and medical fields. The chemical composition (60-x) B2O3 + 20Bi2O3 + 20Li2O+xFe2O3 with different Fe2O3 concentrations were prepared using the melt-quenching technique. Gamma-ray attenuation competencies of six glass samples along with optical properties were investigated in terms of their utilization suitability in industrial and medical fields. The outcomes of optical investigations indicated that direct optical band gap (Eg direct) decrease from 5.11 eV to 4.82 eV, while for indirect transition (Eg indirect) decrease from 4.62 eV to 3.79 eV, with increasing Fe2O3 concentrations. To determine the radiation shielding performance, mass attenuation coefficients (μ m) of samples were calculated using FLUKA code and XCOM program between 0.015–15 MeV photon energy range. Accordingly, gamma shielding parameters such as mass (MAC) and linear (LAC) attenuation coefficients, half-value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic numbers (Zeff), electron density (Nel), and fast neutron removal cross sections (ΣR) were evaluated for all glass samples. The results showed that increasing Fe2O3 concentration in glass structure increased the MAC and Zeff. The Fe-10 was reported with the lowest HVL values in addition to the highest MAC and Zeff values.

Enhancement of Optical Properties of Borate Glass Doped with Vanadium Oxide

“…The electromagnetic waves interact with electrons in the valence band and moves to the conduction band through the fundamental gap. In the case of glass, the glass forming anions effects on the conduction band and cations play a key role in indirect band transition [28,29].…”

“…The energy band gap decreases by increasing of V 2 O 5 content direct and indirect as shown in Table 5. The Urbach relation can be describe the absorption coefficient in the region exponential energy [9,28]:…”

“…To determine the Urbach energy values, the reciprocals of the slopes of the linear region of curves are taken. The empirical Urbach rule gives the relationship between E u and α(ν), as is shown in equation [28,29]: 5.…”

“…The change of the optical conductivity (σ) with photon energy of the BPV glass system have the same behavior of dielectric constant which start with constant values first, then make a hump and finally a sudden increase of the optical conductivity with the increasing of photon energy values as shown in Figure 13. The σ optical and electrical can be specified by the following relation [17,28]:…”

Effects of polycrystalline GeO2 substrates on the structural, optical and electrical properties of ZnSe thin films

“…Oxide substrates are used in optoelectronics to produce metal-oxide-fields effect thin film transistors, photodiodes and solar cells [1][2][3]. In nuclear application, oxides are also employed for radiation shielding and radiation attenuation [4,5]. One of these oxides is germanium dioxide which is used in chemical applications as catalysts [6] and as energy reservoirs [7].…”