scholarly journals Glass and Glass-ceramics based on Weathered Basaltic Rock for Radiation Shielding Applications

2021 ◽  
Author(s):  
Gamal khater ◽  
heba saudi ◽  
wesam Abd-Allah
Keyword(s):  
Glass Ceramics ◽  
Basaltic Rock ◽  
Radiation Shielding ◽  
X Ray Diffraction ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Basaltic Rocks ◽  
Protective Shield ◽  
Prepared Glass ◽  
Mass Attenuation

Abstract Different batches of weathered basalt ranging from 100 to 50%, in combination with by-pass cement dust, were used to prepare the glass compositions. Different techniques used, such as differential thermal analysis, X-ray diffraction, density, FTIR, the mass attenuation coefficients, appropriate atomic number (Zeff), and effective electron density (Neff), were examined for the prepared glass and glass-ceramics samples at different photon energies.. In the present study, it was revealed that as the molar volume decreases, the density increases. The experimental and theoretical effects of the mass attenuation component were mostly consistent at different energies. Results revealed that glass samples (WB100) having a higher percentage of basaltic rocks present higher radiation protection than those with a lower rate (WB50). In addition, glass-ceramics displayed enhanced radiation and gamma rays protection than glass. Therefore, we recommend using glass ceramics containing 100% Basalt as a protective shield against rays with less thickness and higher protection.

scholarly journals Estimation of the X/γ- ray shielding properties of different glass system using Monte Carlo Simulation

2021 ◽  
Vol 12 (2) ◽  
pp. 1117-1122
Author(s):  
Ayano Shanko, MD, Et. al.
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Attenuation Coefficient ◽  
Mass Attenuation Coefficient ◽  
Radiation Shielding ◽  
Glass System ◽  
Effective Electron ◽  
X Ray ◽  
Shielding Properties ◽  
Mass Attenuation

The aim of the research is to estimate the X-ray shielding properties of different glass systems using Monte Carlo Simulation. X-ray glass is also known as radiation shielding glass. Glass provides protection against the absorption of energy radiation. The shielding layer is formed by a high concentration of lead and barium. The mass attenuation coefficient, the effective atomic number and the effective electron density are used to determine the position of gamma-ray photons in matter. Shield characterization in terms of mass attenuation coefficient (μm), transmission fraction (T), effective atomic numbers (Zeff), half-value layer (HVL) and exposure build-up. factor (EBF) of a glass system is estimated by the Monte Carlo Simulation. The random sampling and statistical analysis are computed using the monte carlo simulation. Various external factors are considered as the input parameters. The different composition of the glass will be examined using the Monte Carlo simulation and the shielding capability would be determined for the various samples.

Determination of effective atomic numbers and electron densities for some synthesized triazoles from the measured total mass attenuation coefficients at different energies

2019 ◽  
Vol 97 (1) ◽  
pp. 86-92 ◽  
Author(s):  
F. Akman ◽  
I.H. Geçibesler ◽  
I. Demirkol ◽  
A. Çetin
Keyword(s):  
Total Mass ◽  
Effective Atomic Number ◽  
Electron Densities ◽  
Atom Number ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Theoretical Results ◽  
Mass Attenuation

The effective atomic numbers and electron densities of some synthesized triazoles were determined using the experimental values of total mass attenuation coefficients at 13.93, 17.77, 26.34, and 59.54 keV photon energies. The measurements were performed in a transmission geometry that consists of a Si(Li) detector, an 241Am point source and a target. The measured results were compared with two different theoretical results. The measured results are generally consistent with the theoretical results. It is observed that the measured parameters depend on the photon energy, weighted contributions of the individual atoms within the triazoles, atom number in the triazoles, and chemical composition of triazoles. Also, the effective electron density increases linearly with increasing effective atomic number.

Investigation of Structural, Thermal Properties and Shielding Parameters of Borosilicate Glasses Doped with Dy3+/ Tb3+ Ions for Gamma and Neutron Radiation Shielding Applications

2021 ◽  
Vol 80 (1) ◽  
pp. 50-61
Author(s):  
Bashar Khudhair Abbas ◽  
Sharudin Omar Baki ◽  
Fong Wai Leng ◽  
Haider Khudhair Abbas ◽  
Layth Al-Sarraj ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Neutron Radiation ◽  
Mean Free Path ◽  
Radiation Shielding ◽  
Borosilicate Glasses ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Main Compound ◽  
Unit Structure ◽  
Prepared Glass

In this study, borosilicate host (H) and seven (S1-S7) samples are prepared by traditional melt-quenching technique. The samples are singly (S1, S2) and doubly (S3-S7) doped with deferent contents of Tb3+ and Dy3+ ions. All samples are analyzed and characterized by XRD (x-ray diffraction), ATR-FTIR (Attenuated total Reflectance-Fourier transform infrared) spectroscopy, TGA/DSC (Thermogravimetric analysis/Differential scanning calorimetry), and Raman spectroscopy. Moreover, the radiation shielding parameters of mentioned glasses such as mass attenuation (?/?), mean free path (MFP), and half-value layer (HVL) are evaluated within the energy of 0.015MeV-15MeV. These parameters are theoretically investigated and evaluated by using XCOM, WINXCOM, and Phy-X programs in addition to the other relevant equations. The ATR-FTIR measurement and Raman spectroscopy results confirmed the unit structure of BO3 and BO4 groups as the main compound as well as the Aluminum-oxide (Al-O-Al) and zinc-oxide (ZnO4) bonds. The transition (Tg), onset crystallization (Tx), crystallization (Tc) temperatures, and weight loss were identified from DSC and TGA findings, respectively. Also, the prepared glass shows good stability against crystallization, as reflected by (?T) variation. Furthermore, the radiation shielding parameter findings show good enhancement of the performance of the samples. However, upon these findings, one can say that these glasses could be used and utilized for radiation shielding purposes.

scholarly journals Radiation Shielding Properties Comparison of Pb-Based Silicate, Borate, and Phosphate Glass Matrices

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Suwimon Ruengsri
Keyword(s):  
Phosphate Glass ◽  
Theoretical Calculations ◽  
Visible Region ◽  
Mass Attenuation Coefficient ◽  
Radiation Shielding ◽  
Attenuation Coefficients ◽  
Total Attenuation ◽  
Shielding Properties ◽  
Glass Matrices ◽  
Mass Attenuation

Theoretical calculations of mass attenuation coefficients, partial interactions, atomic cross-section, and effective atomic numbers of PbO-based silicate, borate, and phosphate glass systems have been investigated at 662 keV. PbO-based silicate glass has been found with the highest total mass attenuation coefficient and then phosphate and borate glasses, respectively. Compton scattering has been the dominate interaction contributed to the different total attenuation coefficients in each of the glass matrices. The silicate and phosphate glass systems are more appropriate choices as lead-based radiation shielding glass than the borate glass system. Moreover, comparison of results has shown that the glasses possess better shielding properties than standard shielding concretes, suggesting a smaller size requirement in addition to transparency in the visible region.

Crystallization Behavior during Preparation of Glass-Ceramics from BF Slag of Baotou Iron and Steel Company

2012 ◽  
Vol 581-582 ◽  
pp. 836-841
Author(s):  
Yi Ci Wang ◽  
Jian Liang Zhang ◽  
Qi Jiang ◽  
Guo Ping Luo ◽  
Wen Wu Yu
Keyword(s):  
Blast Furnace ◽  
Crystallization Behavior ◽  
Glass Ceramics ◽  
Reference Value ◽  
X Ray Diffraction ◽  
Steel Company ◽  
Iron And Steel ◽  
Prepared Glass ◽  
Bf Slag ◽  
Furnace Slag

In this paper, the crystallization behavior including crystallization temperature, nucleation temperature, microstructure of glass-ceramics and crystal phase composition during preparation of glass-ceramics by melting method from blast furnace(BF) slag of Baotou iron and steel company, quartz sand and other materials was investigated using differential thermal analysis, X-ray diffraction and scanning electron microscopy. The results show that the crystallization peak temperatures of the parent glasses are 962~966°C when the ratio of blast furnace slag changes from 20% to 50%, and uniform, compact grains in the prepared glass-ceramics are obtained, whose diameters are about 0.2-0.5μm. In addition, the major crystalline phases are identified as diopside(Ca(Mg,Al)(Si,Al)2O6）and diopside containing aluminum(Ca(Mg0.5Al0.5)(Al0.5Si1.5O6), and the mechanical properties of glass-ceramics are good, among which the flexural strength is more than 110Mpa. The results have theoretical guidance meaning and practical reference value for realizing industrial production of preparation of glass-ceramics from BF slag of Baotou iron and steel company.

Preparation and Characterization of CaF2 Doped Bioglass Ceramics

2011 ◽  
Vol 11 ◽  
pp. 45-66 ◽  
Author(s):  
M.R. Majhi ◽  
R. Pyare ◽  
S.P. Singh
Keyword(s):  
Glass Ceramics ◽  
Melting Process ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Time Period ◽  
Infrared Reflection ◽  
Prepared Glass ◽  
Sbf Solution

Bioglass Ceramics having molar composition 40SiO2-(44-X)CaO-10MgO-6P2O5-XCaF2 (where X = 0 to 8%) were prepared by conventional melting process in an electric globar furnace at 1400±10°C. Controlled crystallizations were carried out to convert the bioglasses to their corresponding ceramics. Nucleation and crystallization regimes were carried out by differential thermal analysis. The crystalline phases termed hydroxy fluoroapatite, akermanite and wollastonite were identified by using x-ray diffraction analysis. The investigation of bioactivity for the prepared glass and glass ceramics was done by infrared absorption and infrared reflection spectra after immersion in simulated body fluid (SBF) for different periods at 37.8°C. Scanning electron microscope (SEM) analysis was carried out to investigate the surface texture. Micrographs show the formation of HCA layer on the surface of the bioglass ceramics samples after 7 days of SBF treatment. The surfaces of the samples were completely covered with irregular and needle-like aggregates of Ca–P layer. The released ions were estimated by atomic absorption spectroscopy. The chemical durability of these materials was determined by pH measurement methods and it was found that pH of the solution increases up from 1 to 7 days. Further, pH decreases with increasing time period, from 15 to 30 days in SBF solution.

scholarly journals Investigation of the Mass Attenuation Coefficients, Effective Atomic Numbers and Electron Densities for Compounds of Painkiller

2021 ◽  
Vol 2 (1) ◽  
pp. 034-037
Author(s):  
Tekerek Saniye
Keyword(s):  
Gamma Ray ◽  
Effective Atomic Number ◽  
Radiation Shielding ◽  
Radiation Physics ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Technological Advances ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Gamma Radiations

In this study the effects of gamma radiations with compounds are an important subject in the field of medicine, radiation shielding and radiation physics. With technological advances the using of radiation has increased in the medicine in the last century. The mass absorpsion coefficient (µ/ρ) is the fundamental a quantity characterizing gamma ray and is of major importance in radiation shielding. In this study, the mass absorption coefficient of painkillers named Ketoprofen, Flurbiprofen, Etodolac, Ibuprofen, Meloxicam, Diclofenac and Aspirin were calculated at energy range from 4.65 keV to 59.543 keV using the WinXCom data programme. In addition total atomic (σta), moleculer (σtm), electronic cross-section (σte), effective atomic number (Zeff), effective electron density (Neff) were calculated.

Radiation shielding properties of mortars containing heavyweight particles

Kerntechnik ◽  
2021 ◽  
Vol 86 (1) ◽  
pp. 64-69
Author(s):  
N. U. Kockal ◽  
A. Cesur ◽  
S. F. Ozmen
Keyword(s):  
Mass Attenuation Coefficient ◽  
Radiation Shielding ◽  
Point Sources ◽  
Calcareous Sand ◽  
Heavy Particles ◽  
Attenuation Coefficients ◽  
High Purity Germanium ◽  
Mass Attenuation Coefficients ◽  
Shielding Properties ◽  
Mass Attenuation

Abstract In this study the radiation shielding properties of mortar samples were investigated. The samples were created by replacing heavyweight particles of iron, steel and chromium waste by calcareous sand in different volume percentages. Additionally, the effects of the physical properties of particles and samples on shielding properties is also discussed. In the scope of this work, the radiation shielding properties of mortar samples were measured by determining the values of mass attenuation coefficients by means of an experimental setup consisting of 133Ba, 137Cs and 60Co standard point sources and high purity germanium (HPGe) detector. It’s concluded that the highest mass attenuation coefficient values among the heavy particles were achieved by chromium particles. However, all the high-density particles used in the study improved the radiation shielding properties of the mortars considerably compared to ordinary mortars.

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