Newly developed tellurium oxide glasses for nuclear shielding applications: An extended investigation

Tekın, H.O.; Kassab, L.R.P.; Kılıcoglu, O.; Magalhães, Evellyn S.; Issa, Shams A.M.; Mattos, Guilherme Rodrigues da Silva

doi:10.1016/j.jnoncrysol.2019.119763

Cited by 68 publications

(19 citation statements)

References 30 publications

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“…of the prepared sample over all standard materials in the diagnostic energy range (40 to 90keV) is due to the fact that Tellurite glass doped with suitable modifier provide more bridging oxygen as host glass network, in addition to thermal stability, durability and good optical properties. These results are consistent with other findings [19,20,21]. Fig.…”

Section: Resultssupporting

confidence: 93%

“…1, the XRD pattern abroad defused scattering in 2θ range between 20 and 30, which indicate the amorphous glass The superiority of the prepared sample over all standard materials in the diagnostic energy range (40 to 90keV) is due to the fact that Tellurite glass doped with suitable modifier provide more bridging oxygen as host glass network, in addition to thermal stability, durab and good optical properties. These results are consistent with other findings [19,20,21]. ) and some of the common commercial standard RS 360, RS 520, Chromite, Chromite, Ferrite, Magnetite and between 15keV and1MeV.…”

Section: Resultssupporting

confidence: 93%

“…Due to the toxicity, high cost, and heavy weight of lead and lead glass materials several studies were conducted to develop alternative materials that replace lead such as tellurite-base glasses, phosphate-based materials, metal alloy, polymers [15][16][17][18][19][20][21][22][23][24][25][26][27][28]. These studies showed a good shielding performance in terms of high shielding efficiency without loss of transparency, good physical properties, thermal stability and good optical properties.…”

Section: Introductionmentioning

confidence: 99%

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An Evaluation of the Shielding Effectiveness of Tellurite Glass with Composition 85TeO2-5Nb2O5-5ZnO-5Ag2O for Diagnostic Radiology Application

Hussein

2021

CJAST

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The metal oxide glasses have attracted huge interest as promising types of shielding materials to replace the toxic, heavy and costly conventional shielding materials. In this work, the physical and the shielding effectiveness of Tellurite glass sample (S1) contain host metal oxides (85TeO2-5Nb2O5-5ZnO-5Ag2O) were evaluatedatphoton energies range between 15keVand1MeV.The shielding parameters of the proposed glass system such as linear attenuation coefficients, HVL, MFP, Zeff, and Neffwere evaluated. The proposed samples showed a superior performance at the diagnostic energy range between 40 and 90 keV and a comparable shielding effectiveness above 90keV when compared with other commercial standard shielding materials.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Evaluation of the Shielding Effectiveness of Tellurite Glass with Composition 85TeO2-5Nb2O5-5ZnO-5Ag2O for Diagnostic Radiology Application

Hussein

2021

CJAST

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“…On the other hand, radiation shielding effectiveness is known as half-value thickness (HVL), and it defines the thicknesses of attenuators that reduce the amount of radiation to half-value [27]. Also, the term of mean free path (MFP), which shows the average range amid two consecutive collisions of the target and energetic photon, is considered an advantageous factor for designing and selecting the appropriate shielding material regarding the gamma-ray attenuation [28,29]. Other important shielding parameters examined are exposure buildup factor (EBF) and energy absorption buildup factor (EABF) values [30] that play an important role in the determination of uncollided-unscattered photon ratio in the shielding material and in assessing gamma-ray shielding performance.…”

Section: Nuclear Radiation Shielding Parametersmentioning

confidence: 99%

Fabrication, optical characteristic, and nuclear radiation shielding properties of newly synthesised PbO–GeO2 glasses

et al. 2020

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In this study, optical properties and nuclear protective efficiency of newly fabricated PbO-GeO 2 glass samples (GP) fabricated with different concentration of TiO 2 (0.2%, 0.5%, and 4%, in wt%) were investigated. PbO-GeO 2 glass samples have been prepared by the conventional melt-quenching method. Using optical absorption spectra, band gap and optical properties of the PbO-GeO 2 glass samples were evaluated. In addition, mass attenuation coefficient values of the fabricated glass samples were calculated in the energy range of 0.015-15 MeV using MCNPX simulation and the theoretical WinXcom program. In addition, several nuclear shielding parameters were calculated for gamma ray and neutrons such as half-value layer, mean free path, effective atomic number (Z eff ), exposure buildup factor, energy absorption buildup factor, and fast neutron removal cross sections (Σ R ). The results showed that glass sample with 0.2% of TiO 2 and with the highest density has an excellent nuclear radiation shielding ability for gamma ray, whereas the one with the highest TiO 2 contribution (4.0% of TiO 2 ) has a better protection against fast neutrons shielding among the produced glass samples. The results also showed a slight change for the E opt with TiO 2 concentration and the same applies to the refractive index. However, E opt tends to decrease when TiO 2 concentration increases and, consequently, the refractive index tends to increase.

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“…Many scientists have been looking for a more adequate attenuator that can protect the living biological tissues and organs from hazardous effects of gamma photons. On the other hand, another issue attributed to this ongoing investigation is to provide some essential advantages such as cost-effectiveness, high durability, non-toxicity, lightweight, and portability [14][15][16][17]. By considering the recent investigations and needs for superior shields, this work aimed to perform a large experimental characterization on a different type of TiO 2 , reinforced glasses in terms of their optical, nuclear radiation shielding and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, physical, optical, mechanical, and radiation attenuation properties of TiO2–Na2O–Bi2O3–B2O3 glasses

Abouhaswa

Zakaly

Issa

et al. 2021

Ceramics International

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A series of bismo-borate (50-x)B 2 O 3 -xTiO 2 -15Na 2 O-30Bi 2 O 3 glass samples (where x = 0, 2.5, 5, 7.5, and 10 wt %) doped with TiO 2 were fabricated via the melt-quenching technique. The gamma and neutron shielding, physical, optical, and mechanical properties of the prepared samples were investigated. The experimental results were measured using an HPGe detector. 152 Eu, 133 Ba, 137 Cs, and 60 Co radioactive sources were used with energies in the range of 81-1408 keV. The experimental results were compared with both the FLUKA code and the XCOM database. The addition of TiO 2 increased the density of the glass samples and decreased their molar volume. The mass attenuation coefficient (MAC) decreased as photon energy decreased, while it increased as TiO 2 concentration increased. The half value layer (HVL) and mean free path (MFP) of the glass samples increased when the photon energy increased and decreased as the TiO2 concentration increased. The absorbance of the present samples is enhanced by using TiO 2 , meaning they can be used to protect humans from UV light. Both direct and indirect band gaps decreased as TiO 2 content increased from 0 to 10 wt %. Moreover, the electronic transition between localized states is valid in the present samples. The radiation shielding, optical, physical, and mechanical properties of the fabricated glass samples demonstrate their utility for diagnostic gamma shielding.

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Newly developed tellurium oxide glasses for nuclear shielding applications: An extended investigation

Cited by 68 publications

References 30 publications

An Evaluation of the Shielding Effectiveness of Tellurite Glass with Composition 85TeO2-5Nb2O5-5ZnO-5Ag2O for Diagnostic Radiology Application

An Evaluation of the Shielding Effectiveness of Tellurite Glass with Composition 85TeO2-5Nb2O5-5ZnO-5Ag2O for Diagnostic Radiology Application

Fabrication, optical characteristic, and nuclear radiation shielding properties of newly synthesised PbO–GeO2 glasses

Synthesis, physical, optical, mechanical, and radiation attenuation properties of TiO2–Na2O–Bi2O3–B2O3 glasses

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