Determination of photon-shielding features and build-up factors of nickel–silver alloys

Şakar, Erdem

doi:10.1016/j.radphyschem.2020.108778

Cited by 36 publications

(14 citation statements)

References 54 publications

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“…For related details on µ, μ/ρ, Z eff , N eff , HVL, TVL, MFP, and RPE parameters, including Z eq and a five parameter G–P fitting approximation for EBFs and EABFs computation, one can review Refs. [ 8 , 9 , 10 , 11 , 27 , 29 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ], as these perspectives are not restated in this part. Likewise, specifics on ‘ Σ R ’ and related expressions can be found elsewhere [ 8 , 9 , 22 , 27 , 45 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Neutron Attenuation Aspectsmentioning

confidence: 99%

“…The derived Σ R results specify that for any glass, the proper mixture of both light (e.g., B) and heavy (e.g., Bi) elements is essential in attaining better attenuation effectiveness for fast neutrons. Additionally, glass S6 Σ R value is compared with distinct established (e.g., graphite, H 2 O, concretes) and some other freshly reported radiation shielding substances Σ R quantities [8,22,23,31,[33][34][35][36]39,45,53,55,59] and listed in Table 3. SSS30 glass 0.08931 [35] TZNG-E glass 0.1125 [36] S5 glass 0.1375 [39] E glass 0.1474 [45] S7 glass 0.1232 [53] Following Table 3 data, one can identify that, proportionately, S6 glass possesses a greater Σ R than respective graphite, H 2 O, OC, HSC, and ILC [59], G8 [8], and G0 [22] glasses, S0 glass-ceramic [23], PA-6 and PVDC polymers [33], SSS30 [35], and TZNG-E [36] glasses values, and a lower Σ R than BBLNi6 [55] glass, NS1 alloy and SMC [31], and VTBi6 [34], S5 [39], E [45], and S7 [53] glasses quantities.…”

Section: Neutron Attenuation Aspectsmentioning

confidence: 99%

“…It is vital to explore definite parameters, such as linear attenuation coefficient ( μ ), mass attenuation coefficient (μ/ρ), effective atomic number ( Z eff ), effective electron density ( N eff ), half-value layer (HVL), tenth-value layer (TVL), mean free path (MFP), radiation protection efficiency (RPE), equivalent atomic number ( Z eq ), exposure buildup factor (EBF), and energy absorption buildup factor (EABF) for γ -rays and other quantities, such as macroscopic effective removal cross-sections for fast neutrons ( Σ R ), scattering cross-sections (coherent ( σ cs ) and incoherent (σ ics )), and absorption cross-section ( σ A ), including total cross-section ( σ T ) for slow or thermal neutrons, by utilizing appropriate experimental procedures or theoretical and simulation methods to test glasses [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 22 ], glass ceramics [ 23 ], ceramics [ 24 ], metallic glasses [ 25 ], concretes [ 26 , 27 ], steels [ 28 ], alloys [ 29 , 30 , 31 ], and polymers [ 32 , 33 ], etc. for radiation shielding.…”

Section: Introductionmentioning

confidence: 99%

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Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses

Lakshminarayana

Elmahroug

Kumar³

et al. 2021

Materials

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For both the B2O3-Bi2O3-CaO and B2O3-Bi2O3-SrO glass systems, γ-ray and neutron attenuation qualities were evaluated. Utilizing the Phy-X/PSD program, within the 0.015–15 MeV energy range, linear attenuation coefficients (µ) and mass attenuation coefficients (μ/ρ) were calculated, and the attained μ/ρ quantities match well with respective simulation results computed by MCNPX, Geant4, and Penelope codes. Instead of B2O3/CaO or B2O3/SrO, the Bi2O3 addition causes improved γ-ray shielding competence, i.e., rise in effective atomic number (Zeff) and a fall in half-value layer (HVL), tenth-value layer (TVL), and mean free path (MFP). Exposure buildup factors (EBFs) and energy absorption buildup factors (EABFs) were derived using a geometric progression (G–P) fitting approach at 1–40 mfp penetration depths (PDs), within the 0.015–15 MeV range. Computed radiation protection efficiency (RPE) values confirm their excellent capacity for lower energy photons shielding. Comparably greater density (7.59 g/cm3), larger μ, μ/ρ, Zeff, equivalent atomic number (Zeq), and RPE, with the lowest HVL, TVL, MFP, EBFs, and EABFs derived for 30B2O3-60Bi2O3-10SrO (mol%) glass suggest it as an excellent γ-ray attenuator. Additionally, 30B2O3-60Bi2O3-10SrO (mol%) glass holds a commensurably bigger macroscopic removal cross-section for fast neutrons (ΣR) (=0.1199 cm−1), obtained by applying Phy-X/PSD for fast neutrons shielding, owing to the presence of larger wt% of ‘Bi’ (80.6813 wt%) and moderate ‘B’ (2.0869 wt%) elements in it. 70B2O3-5Bi2O3-25CaO (mol%) sample (B: 17.5887 wt%, Bi: 24.2855 wt%, Ca: 11.6436 wt%, and O: 46.4821 wt%) shows high potentiality for thermal or slow neutrons and intermediate energy neutrons capture or absorption due to comprised high wt% of ‘B’ element in it.

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Section: Methodsmentioning

confidence: 99%

Section: Neutron Attenuation Aspectsmentioning

confidence: 99%

Section: Neutron Attenuation Aspectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses

Lakshminarayana

Elmahroug

Kumar³

et al. 2021

Materials

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“…Many scientists tried to improve the radiation protection efficiency of these concretes by mixing with minerals or changing the grain size [6,7]. Similarly, the evaluation of radiation protection capacity of several alloys composites and polymers is also on the run [8][9][10]. In any case, these materials and techniques have downsides.…”

Section: Introductionmentioning

confidence: 99%

Impact of Bi2O3 modifier concentration on barium–zincborate glasses: physical, structural, elastic, and radiation-shielding properties

et al. 2021

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A sequence of Bi 2 O 3 varying barium-zincborate (BZX) glasses with the chemical composition (60-x) B 2 O 3 -20ZnO-20BaCO 3 -xBi 2 O 3 -0.5Dy 2 O 3 (where x 0 , 5, 10, 15, 20, 25, and 30 in wt%) is fabricated by melt-quenching method. The fabricated samples were examined for the variation in physical, structural, elastic, and radiation-shielding properties with the Bi 2 O 3 concentration. The structural and compositional evaluations are done using XRD and FTIR spectra. The BZX matrixes consist of the trigonal-planar and tetrahedral groups of borates, BiO 3 and BiO 6 units of Bi 2 O 3 , and the non-bridging oxygen in general. The average single-bond strength values substantiate the increasing ionic nature of the BZX glasses. The variation in the density and molar volume of the BZX series discussed in terms of various structural and elastic properties. The glass-coded BZ15 was found to be the best candidate for the sound-resistant applications based on the atomic packing fraction and the acoustic impedance studies. With MCNP5 simulation, the mass attenuation coefficient (MAC) values of all the samples were calculated and compared with a theoretical approach using the XCOM program. As the amount of Bi 2 O 3 increases, the linear attenuation coefficient (LAC) increases with it at all energies. The LAC values varied between 0.2805 and 0.5269 cm −1 for the investigated glasses at 0.81 MeV. BZ30 glass is the more effective shield due to the highest MAC and LAC values.

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Investigation of radiation protection features of the TeO2–B2O3–Bi2O3–Na2O–NdCl3 glass systems

Eshghi

2020

J Mater Sci: Mater Electron

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In this research, the radiation protection features of bismuth boro-tellurite doped with NdCl 3 glass system in the form of 65B 2 O 3 -12.5Bi 2 O 3 -12.5TeO 2 -(10 − y)Na 2 O-yNdCl 3 with 0 ≤ y ≤ 10 mol% have been investigated by using Phy-X/PSD, XMuDat and XCOM programs. The photon radiation shielding parameters of suggested glasses were calculated in the photon energy range of 0.015-15 MeV. The results showed that the addition of NdCl 3 in the present glass system improves the shielding performance of the glasses system. The obtained results have been plotted and discussed in terms of photon energy. Also, the obtained results were compared together.

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Determination of photon-shielding features and build-up factors of nickel–silver alloys

Cited by 36 publications

References 54 publications

Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses

Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses

Impact of Bi2O3 modifier concentration on barium–zincborate glasses: physical, structural, elastic, and radiation-shielding properties

Investigation of radiation protection features of the TeO2–B2O3–Bi2O3–Na2O–NdCl3 glass systems

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