Fe-based alloys and their shielding properties against directly and indirectly ionizing radiation by using FLUKA simulations

Abstract

Effective shielding material is an essential demand to minimize the harmful effects of ionizing radiation in various nuclear and medicine facilities. In this article, we report on the directly and indirectly ionizing radiation shielding properties of Fe-based alloys in the chemical composition of Fe83/B13−x/Cx/Si3/P1, where x is ranging from 0 up to 4 mol%. Indirectly ionizing radiation studies include the interactions of the Fe-based alloys with the neutral radiation such as photon (X and gamma rays) and neutron. The photon interaction parameters (e.g. LAC, MAC, MFP, EAC, HVL, SGRC, and dose rate) were obtained by using FLUKA simulations and theoretical calculations for energies 0.6, 1.25, 1.5, 2, 3, 5, 10, and 15 MeV. The neutron interaction parameters were investigated for thermal and fast neutrons in terms of scattering, absorption, and removal cross sections. Moreover, directly ionizing radiation studies include the interactions of the selected alloys with charged particles such as electron, proton, alpha, and carbon. The obtained results indicate that a maximum dose rate (∼108 R hr−1) is observed in the 1 mm thickness of FBCSP-A, FBCSP-B, FBCSP-C, FBCSP-D and FBCSP-E alloys at 15 MeV. While, the minimum dose rate is noted at the lower E side (0.6 MeV) in the 5 mm thickness of Fe-based alloys, and decreased from 74.589 × 105 to 74.644 × 105 (R hr−1) for FBCSP-A to FBCSP-E alloys. It can be concluded that the Fe-based alloys are useful for shielding applications against directly and indirectly ionizing radiation as compared with traditional, common, and commercial shields.

Role of heavy metal oxides on the radiation attenuation properties of newly developed TBBE-X glasses by computational methods

“…All the required constant can be found elsewhere [35]. One can find the application of these methods on different materials elsewhere [36][37][38][39][40][41][42].…”

Effect of Ag2O/V2O5 substitution on the radiation shielding ability of tellurite glass system via XCOM approach and FLUKA simulations

“…Furthermore, heavy elements have low neutron reaction cross section, hence, HMO in glasses though produce good photon absorbing glasses, they may however not be good neutron shields. For example, increase in the TeO 2 concentration though produced excellent photon and charged particle absorption [13,14], however, the optimum concentration of TeO 2 in Li 2 O-B 2 O 3 -P 2 O 5 -TeO 2 glass system [14] for fast neutron absorption did not correspond to maximum TeO 2 concentration. The investigation of Na 2 O 3 -PbO-BaO-Nb 2 O 5 -SiO 2 -Al 2 O 3 system revealed that glass samples with maximum BaO and PbO content provided maximum charged particle and gamma radiation shielding competence [15].…”

Tungsten-based polymer composite, a new lead-free material for efficient shielding of coupled neutron-gamma radiation fields: A FLUKA simulation study

“…Promising metal powders considered for embedding in polymer matrix includes tungsten (W) [18][19][20][21], tantalum (Ta) [22], boron (B) [23], zirconium (Zr) [24], copper (Cu) [25], bismuth (Bi) [19], gadolinium (Gd) [26] and samarium (Sm) [27]. Various alloys involving Pb, W, Cu, Fe, Ni, Re and B 4 C have also been proposed as effective radiation shielding materials [28][29][30][31][32].…”