Gamma radiation shielding properties of some Bi-Sn-Zn alloys

We investigate the gamma radiation shielding properties of some Bi-Sn-Zn alloys. For this study, we
synthesised five bismuth-based lead-free alloy samples using the melt quench technique with the
composition Bi50Sn ##IMG## [http://ej.iop.org/images/0952-4746/40/1/296/jrpab6aafieqn1.gif]
{$(50-x)$} Zn ##IMG## [http://ej.iop.org/images/0952-4746/40/1/296/jrpab6aafieqn2.gif] {$x,$} where
##IMG## [http://ej.iop.org/images/0952-4746/40/1/296/jrpab6aafieqn3.gif]
{$x=0,10,20,30,40\,\mathrm{wt} \% .$} Apart from physical parameters such as the weight, density,
and thickness of the alloy samples, we estimated their optimum thickness range at photon energies of
122, 511, 662, and 1250 keV. The mass attenuation coefficients and effective atomic number, measured
experimentally, were found to be in close agreement with values computed using WinXCom software,
within a ± 4% error. From the transmitted photon spectra, the radiation ...

Source: Journal of Radiological Protection - February 20, 2020 Category: Physics Authors: Nisha Rani, Yogesh K Vermani and Tejbir Singh Source Type: research