In this study, a series of 75TeO 2 -5Li 2 O-10ZnO-(10-x)Nb 2 O 5 -(x)Er 2 O 3 (where x = 0, 0.5, 1.0, 1.5, 2.0 and 2.8 mol%) glasses have been surveyed in terms of photon and neutron shielding characteristics. For this aim, 3 × 3 inch NaI(Tl) detector has been simulated in order to detect photons. Afterwards, the mass attenuation coefficients (μ/ρ) and some shielding quantities such as half-value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic number (Z eff ), effective electron density (N el ), equivalent atomic number (Zeq) and exposure build-up factor (EBF) have been calculated. The obtained MCNPX results of all the glasses have been compared and approved with those of XCOM program. Also, their gamma ray buildup factors have been determined in a wide energy range of 0.02–20 MeV for penetration depths up to 15 mfp. Moreover, neutron attenuation abilities of glasses have been evaluated by estimating neutron total effective removal cross section. The results showed that Er 2 O 3 partial replacement of Nb 2 O 5 in 75TeO 2 -5Li 2 O-10ZnO-(10- x)Nb 2 O 5 -(x)Er 2 O 3 glass system enhances photon and neutron attenuation characteristics. It can be deduced that obtained results from the present investigation can be useful to understanding of influence of Er 2 O 3 on nuclear radiation shielding properties of tellurite glasses.
Agar, O., Kavaz, E., Altunsoy, E. E., Kilicoglu, O., Tekin, H. O., Sayyed, M. I., … Tarhan, N. (2019). Er 2 O 3 effects on photon and neutron shielding properties of TeO 2 -Li 2 O-ZnO-Nb 2 O 5 glass system. Results in Physics, 13. https://doi.org/10.1016/j.rinp.2019.102277