Heavy metal oxide glasses as gamma rays shielding material

Kaur, Preet; Singh, Devinder; Singh, Tejbir

doi:10.1016/j.nucengdes.2016.07.029

Cited by 193 publications

(49 citation statements)

References 87 publications

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“…We note that the graphs of Z eff values for all samples have discontinuities due to photoelectric absorption near the K-, L-, and M-absorption edges of some elements at low energies (see Table 4). These results are in good agreement with the results for various glass systems obtained by El-Mallawany et al [34], Kaur et al [35], and Chanthima and Kaewkhao [36] and with the results for several smart polymer materials reported by Sayyed [37].…”

Section: Resultssupporting

confidence: 92%

Comparison of experimental and theoretical radiation shielding parameters of several environmentally friendly materials

et al. 2019

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In this study, the gamma radiation shielding features of several environmentally friendly materials were investigated. For this purpose, several attenuation parameters, such as the mass attenuation coefficient (l=q), radiation protection efficiency (RPE), and effective atomic number (Z eff) were determined experimentally and compared with numerical data obtained using WinXCom software. In the measurements, the emitted gamma photons were counted by a gamma spectrometer equipped with an HPGe detector using 22 Na, 54 Mn, 57 Co, 60 Co, 133 Ba, and 137 Cs radioactive point sources in the energy region of 81-1333 keV. The obtained results indicate that the l=q and RPE values of the samples decrease with an increase in photon energy. The experimental values are in good agreement with those obtained using WinXCom software. The RPE and Z eff results show that among the studied materials, the NaY 0.77 Yb 0.20 Er 0.03 F 4 sample has the best gamma radiation shielding effectiveness.

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Section: Resultssupporting

confidence: 92%

Comparison of experimental and theoretical radiation shielding parameters of several environmentally friendly materials

et al. 2019

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“…This research examined the degree of shielding [46][47][48][49][50][51][52][53][54] from increase La2O3 at the expense of BaO with a nominal composition of 53B2O3 -2NaF -27PbO -(20 − )BaO -La2O3 (0 ≤ ≥ 15). The mean free path (MFP) was projected as = ( 1) , ℎ .…”

Section: Radiation Shielding Propertiesmentioning

confidence: 99%

Optical, thermal and radiation shielding properties of B2O3–NaF–PbO–BaO–La2O3 glasses

Shaaban

Alomairy

Al-Buriahi

2021

J Mater Sci: Mater Electron

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The techniques of melt-quenching were used to generate 53B2O3 -2NaF -27PbO -(20 − )BaO -La2O3 (0 ≤ ≥ 15) . XRD patterns have established the amorphous character of glass samples. There is clear evidence of the role of La2O3 modifier in the glass network. The thermal characteristics were identified to increase with an increase in La2O3 content. Increasing La2O3 increases the linear and non-linear optical bandgap energy and the Urbach energy. By adding La2O3 to the glass samples, the refractive index, molar polarizability, polarizability, and optical basicity are increased. Theoretically, the bulk modulus and the glass transition temperature increase because of the increase in bond strength. The number of bonds per unit increased with the increase in La2O3 content because of the modifier character of La2O3 in the glass samples. Multiple optical parameters ( ∞), ( o),(1) , ( 3) ) and ( 2 ) as a function of linear and non-linear were obtained. The extent of shielding in this article was examined with the increment in La2O3 at the expense of BaO. The results correspond with similar studies conducted previously.

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“…Gamma-rays possess strong penetrating ability since they possess short wavelengths, and therefore high energy [ 7 ]. Therefore, protective materials made from high-atomic number heavy metal materials, construction materials, are usually used as effective shields against gamma-rays [ 8 , 9 , 10 , 11 ]. These include iron, tungsten, lead, concrete, and silicate like cement and rock with excellent shielding performances [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Gamma-Ray Shielding Performance of 3D-Printed Poly-Ether-Ether-Ketone/Tungsten Composites

Cao

et al. 2020

Materials

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Nuclear energy provides enduring power to space vehicles, but special attention should be paid to radiation shielding during the development and use of nuclear energy systems. In this paper, novel composite materials containing poly-ether-ether-ketone (PEEK) as a substrate and different tungsten contents as a reinforcing agent were developed and tested as shielding for gamma-ray radiation. Shielding test bodies were quickly processed by fused deposition modeling (FDM) 3D printing, and their mechanical, shielding properties of composite materials were evaluated. The results revealed shielding materials with excellent mechanical properties which can further be improved by heat treatment. Under 0.45 MPa load, the heat deflection temperature of PEEK/tungsten (metal) composites was significantly lower than that of PEEK/boron carbide (non-metal) composites. The new shielding materials also demonstrated better shielding of low-energy 137Cs than high-energy 60Co. The gamma-ray shielding rates of test pieces shielding materials made of the same thickness changed exponentially with the tungsten content present in the composite materials. More tungsten led to a better shielding effect. At the same tungsten content, the gamma-ray shielding effect showed a proportional relationship with the thickness of the shielding test bodies, in which thicker test bodies induced better shielding effects. In sum, the integration of 3D printing in the mechanical design and manufacturing of shielding bodies is an effective and promising way for quick processing when considering diverse rays and complex environments. Lighter shielding bodies, at lower costs, can be achieved by structural design in limited space to maximize the material utilization rate and reduce waste.

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Heavy metal oxide glasses as gamma rays shielding material

Cited by 193 publications

References 87 publications

Comparison of experimental and theoretical radiation shielding parameters of several environmentally friendly materials

Comparison of experimental and theoretical radiation shielding parameters of several environmentally friendly materials

Optical, thermal and radiation shielding properties of B2O3–NaF–PbO–BaO–La2O3 glasses

Mechanical Properties and Gamma-Ray Shielding Performance of 3D-Printed Poly-Ether-Ether-Ketone/Tungsten Composites

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