Thickness optimization of Sn–Pb alloys for experimentally measuring mass attenuation coefficients

Kaur, Taranjot; Sharma, Jeewan; Singh, Tejbir

doi:10.1016/j.nucet.2017.02.001

Cited by 26 publications

(2 citation statements)

References 9 publications

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“…The experimental error in the values of / m r associated with this measuring time does not exceed 5%. For better experimental results for measuring mass attenuation coefficient, the thickness must be optimized by keeping the product of linear attenuation coefficient and thickness of sample between 0.5 and 0.7 [40].…”

Section: Methodsmentioning

confidence: 99%

Novel metallic Bi-Pb–Cd-Ag alloys for shielding against neutrons and gamma rays

Reda¹,

El-Daly²

2022

Phys. Scr.

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Obtaining high-performance shielding alloys against mixed neutrons and γ-rays is vital in the field of nuclear radiation. In this work, shielding Bi-Pb–Cd-Ag alloys with superior thermal neutron shielding and high ability to attenuate γ-rays were developed. The microstructure, melting behavior, and mechanical properties of the prepared alloys were characterized. The γ-rays mass attenuation coefficients (μ⁄ρ) were obtained using WinXCom program in the energy range of 0.015–15 MeV. The shielding parameters including atomic and electronic cross-sections (σa and σe), effective atomic number (Zeff), effective electron density (Neff) were calculated. The exposure buildup factor (EBF) using a geometric progression (GP) fitting method was estimated. The experimental measurements were carried out at 662 and 1173, 1332 keV of 137Cs, and 60Co isotopes sources, respectively using a scintillation gamma spectrometer NaI(Tl) detector. The calculated results of WinXCom are consistent and in agreement with the experimental values of μ⁄ρ. The macroscopic effective removal cross-section (∑_R) of the samples for fast neutrons were calculated. Also, the attenuation of thermal neutrons through the prepared alloys has been investigated. It was found that the alloy containing 30% Cd complies with the compromise between superior thermal neutron attenuation besides its superior ability to attenuate γ-rays with good mechanical strength and high ductility.

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Section: Methodsmentioning

confidence: 99%

Novel metallic Bi-Pb–Cd-Ag alloys for shielding against neutrons and gamma rays

Reda¹,

El-Daly²

2022

Phys. Scr.

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“…The density ρ of alloy samples measured by Archimedes' principle is further used to compute primarily the optimum thickness range of the shielding materials. The optimum thickness range was derived from the product of the linear attenuation coefficient μ and the thickness t of the sample that lies in the range m   t 0.5 0.7 [39]. The optimum thickness range of a shielding substance allows single photon interaction and accurate measurement of mass attenuation coefficient values experimentally.…”

Section: Optimum Thickness Rangementioning

confidence: 99%

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

Rani

Vermani²,

Singh³

2020

J. Radiol. Prot.

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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 Zn where 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 protection efficiency (RPE) was determined and analysed for different alloy compositions. A correlation between RPE and effective atomic number was established at different photon energies. The Bi50Sn50 binary alloy composition is reported to exhibit maximum shielding efficiency.

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