Investigation of gamma-ray shielding parameters of bismuth phospho-tellurite glasses doped with varying Sm2O3

Kolavekar, Sangeeta B.; Hiremath, G.B.; Patil, P. N.; Badiger, N.M.; Ayachit, N. H.

doi:10.1016/j.heliyon.2022.e11788

Cited by 19 publications

(6 citation statements)

References 64 publications

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“…σ e provides the probability of interaction per electron in the specimen’s unit volume and is expressed by Eq. ( 8 ) 54 : where Z i is the atomic number and f i is the target element’s fractional abundance. Along with the use of σ a and, σ e .…”

Section: Methodsmentioning

confidence: 99%

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Alabsy,

Abbas,

El-khatib

et al. 2024

Sci Rep

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This research aimed to examine the radiation shielding properties of unique polymer composites for medical and non-medical applications. For this purpose, polymer composites, based on poly methyl methacrylate (PMMA) as a matrix, were prepared and reinforced with micro- and nanoparticles of ZrO2 fillers at a loading of 15%, 30%, and 45% by weight. Using the high purity germanium (HPGe) detector, the suggested polymer composites’ shielding characteristics were assessed for various radioactive sources. The experimental values of the mass attenuation coefficients (MAC) of the produced composites agreed closely with those obtained theoretically from the XCOM database. Different shielding parameters were estimated at a broad range of photon energies, including the linear attenuation coefficient (μ), tenth value layer (TVL), half value layer (HVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), and equivalent atomic number (Zeq), as well as exposure buildup factor (EBF) and energy absorption buildup factor (EABF) to provide more shielding information about the penetration of γ-rays into the chosen composites. The results showed that increasing the content of micro and nano ZrO2 particles in the PMMA matrix increases μ values and decreases HVL, TVL, and MFP values. P-45nZ sample with 45 wt% of ZrO2 nanoparticles had the highest μ values, which varied between 2.6546 and 0.0991 cm−1 as γ-ray photon energy increased from 0.0595 to 1.408 MeV, respectively. Furthermore, the highest relative increase rate in μ values between nano and micro composites was 17.84%, achieved for the P-45nZ sample at 59.53 keV. These findings demonstrated that ZrO2 nanoparticles shield radiation more effectively than micro ZrO2 even at the same photon energy and filler wt%. Thus, the proposed nano ZrO2/PMMA composites can be used as effective shielding materials to lessen the transmitted radiation dose in radiation facilities.

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Section: Methodsmentioning

confidence: 99%

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Alabsy,

Abbas,

El-khatib

et al. 2024

Sci Rep

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“…Finally, using GP fitting parameters (b, c, a, X k , d) in the energy range of 0.015-15 MeV up to a penetration depth of 40 mfp, the buildup factors were estimated using the following equations [30,[34][35][36]…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Attenuation Properties of DNA Nucleobases Against Nuclear Radiation Using EpiXS, Py-MLBUF, and NGCal Software

Hiremath,

Singh,

Patil

et al. 2024

Acta Phys. Pol. A

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In this study, the gamma and neutron interaction parameters of deoxyribonucleic acid and ribonucleic acid nucleobases such as adenine, cytosine, guanine, thymine, and uracil were estimated and compared to those of water. The present calculated mass attenuation coefficient values of deoxyribonucleic acid nucleobases were compared with available simulation code values. From the data, it is observed that guanine has the highest linear attenuation coefficient values among the nucleobases and water in the energy region from 0.015 to 15 MeV. Uracil has a higher effective atomic number and equivalent atomic number values than other nucleobases in the energy region from 0.015 to 15 MeV. Among the nucleobases, uracil has lower buildup factor values, up to 200 keV. However, up to 200 keV, uracil has higher buildup factor values than water. The mass attenuation factor values for nucleobases are listed in the following order: thymine > cytosine > adenine > uracil > guanine. It has been discovered that as the mass attenuation factor increases, the hydrogen wt% of nucleobases also increases.

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“…They found several important points:  The mass attenuation coefficient decreased with increasing photon energy [(0.015 -15) MeV] in the absence of Sm2O3 addition.  Zeq values were lower at 100 keV and energy (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) MeV due to the presence of Compton scattering.  Exposure and energy absorption buildup factors were smaller in both energy regions as photoabsorption and pair creation processes.…”

Section: Introductionmentioning

confidence: 98%

“…In many published papers, these numeric characterization factors were calculated by various software programs with or without experimental data [10,11,13]. Kolavekara et al [14] studied several glass systems composed of 47.5P2O5 + 45ZnO + (5-x) Bi2O3 + 2.5TeO2 + xSm2O3 with density range (3.02 -3.70) by Phy-X/PSD software by penetration depths: (1-40) MFP, materials in mol%: Sm2O3: 0.01 -1; P2O5: 47.50; ZnO: 45.00; TeO2: 2.50; Bi2O3: 4-5; and thickness (mm): 1.84 -2.08. They found several important points:  The mass attenuation coefficient decreased with increasing photon energy [(0.015 -15) MeV] in the absence of Sm2O3 addition.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Gamma Ray Shielding Properties of Oxyanion Complexes: A Comparative Study of CaMoO4, PbCrO4, PbMoO4, and CaWO4

Salman,

Hammud

2024

IJOIR

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The imperative advancement of gamma-ray shielding materials is pivotal for ensuring radioactive and nuclear safety. In this study, our objective was to ascertain key gamma ray shielding parameters, including the mass attenuation coefficient (μm), effective atomic number (Zeff), half-value layer (HVL), effective electronic density (Neff), mean free path (MFP), and exposure buildup factor (EBF), for four oxyanion complexes (CaMoO4, PbCrO4, PbMoO4, or CaWO4). These calculations were performed using Phy-X software within the photon interaction range of 0.015-15 MeV. The investigated ternary chromate, tungstate, and molybdate complexes with the molecular formula ABO4, where A = Ca or Pb and B = Mo, Cr, or W, exhibited an exponential decrease in μm with increasing photon energy in the low-energy region. Lead molybdate demonstrated the highest μm followed by PbCrO4, CaWO4, and CaMoO4, correlating with their respective mean atomic numbers and densities. The mean free path values followed the order of PbMoO4, PbCrO4, CaWO4, and CaMoO4, indicating superior shielding properties due to effective medium-photon interactions. The HVL increased with rising photon energy, with the minimum HVL observed in the presence of lead, primarily attributed to the photoelectric effect. Zeff exhibited a decrease with diminishing mean atomic number and density, with PbMoO4 displaying the highest Zeff, signifying superior γ-ray shielding capability. The exposure buildup factor (EBF) highlighted the interference of photons by calcium compared to lead compounds. The controlled parameters at low and high energy exposures were attributed to the anion and cation properties of the ternary ABO4, respectively. Among the evaluated materials, PbMoO4 emerged as the most effective gamma shielding material in the context of nuclear safety.

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Investigation of gamma-ray shielding parameters of bismuth phospho-tellurite glasses doped with varying Sm2O3

Cited by 19 publications

References 64 publications

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Attenuation Properties of DNA Nucleobases Against Nuclear Radiation Using EpiXS, Py-MLBUF, and NGCal Software

Enhancing Gamma Ray Shielding Properties of Oxyanion Complexes: A Comparative Study of CaMoO4, PbCrO4, PbMoO4, and CaWO4

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