Gamma rays’ shielding parameters for some Pb-Cu binary alloys

Singh, Tejbir; Kaur, Amandeep; Sharma, Jeewan; Singh, Parjit S.

doi:10.1016/j.jestch.2018.06.012

Cited by 41 publications

(23 citation statements)

References 28 publications

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“…where, μ/ρ is the mass attenuation coefficient (cm 2 g -1 ), x is the sample thickness (gcm -2 ), I0 and I are the unattenuated and attenuated photon intensity, respectively. directly related to total atomic and electronic cross-sections (σa and σe) through the following formula (Akkurt, 2009;Elmahroug, Tellili and Souga, 2015;Singh et al, 2018):…”

Section: Methodsmentioning

confidence: 99%

Assessment of Mass Attenuation Coefficient, Effective Atomic Number and Electron Density of Some Aluminum Alloys

Cengiz

Çağlar

2020

Caucasian Journal of Science

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Aluminum alloys have numerous application fields in today's technology due to their excellent mechanical features, high electrical and thermal conductivity, magnificent corrosion resistance, good weldability, good formability and similar properties. In the present study, we investigated the mass attenuation coefficient (µm), effective atomic number (Zeff) and effective electron density (Ne) of four different type commercially available aluminum alloys. For his purpose, µm, Zeff, and Ne values of 5083, 5754, 6061 and 6082 coded aluminum alloys were determined by employing NaI(Tl) gamma ray spectrometry at 661.66,1173.23 and 1332.48 keV gamma ray energies obtained from 137 Cs and 60 Co radioactive sources. Also these parameters theoretically determined using PhyX-PSD computer program at the photon energies of 1 keV-1 GeV and compared with the experimental results. The variation of µm, Zeff, and Ne with incident photon energy presented graphically. From the obtained results it might be concluded that the µm, Zeff, and Ne values for studied alloy samples depend on the incident photon energy and elemental composition of alloys. In addition, it was observed from the theoretical and experimental results that aluminum alloys under study have almost the same gamma ray attenuation capacity.

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Section: Methodsmentioning

confidence: 99%

Assessment of Mass Attenuation Coefficient, Effective Atomic Number and Electron Density of Some Aluminum Alloys

Cengiz

Çağlar

2020

Caucasian Journal of Science

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“…The theoretical µm values for the prepared obsidian specimens were determined using WinXCOM software package [16]. Each spectrum was counted for a period of 600 s and repeated 3 2 (a and b). The µm values of obsidian specimens at different energies were experimentally determined using Lambert-Beer law given by equation 1 [12].…”

Section: Methodsmentioning

confidence: 99%

“…where fi and Zi are the fractional abundance and atomic number of the i th element respectively. The effective atomic number (Zeff) represents the weighted average atomic number of the material consisting of different elements and can be obtain by using the following expression [3][4][5]25]:…”

Section: Calculationsmentioning

confidence: 99%

“…The effective electron number or electron density (Neff ), described as the number of electrons which interacted with photon per unit mass can be determined using µm and σe values with the help of the following practical formula [3,5,25].…”

Section: Calculationsmentioning

confidence: 99%

“…Many researchers have focused on the design of barrier materials that reduce or retain X and gamma rays to protect both humans and their environment from the harmful impacts of radiation. Mass attenuation coefficients (µm), linear attenuation coefficients (µ) mean free path (mfp), half value layer (HVL), tenth value layer (TVL), effective atomic number (Zeff), effective electron number (Neff), energy absorption and exposure buildup factors (EABF and EBF) are basic qualities that shows the radiation shielding effectiveness of any materials [3].…”

Section: Introductionmentioning

confidence: 99%

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Gamma Radiation Shielding Properties of Natural Glass Obsidian

Cengiz

Çağlar

Bílír

2020

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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The present study was carried out to estimate gamma radiation shielding properties of natural glass obsidian. For this purpose, linear attenuation coefficient, mass attenuation coefficient, mean free path, half-value layer, tenth-value layer, effective atomic number and effective electron number values of obsidian samples in black and brown colors were experimentally measured for 661.66, 1172.23 and 1332.48 keV gamma ray energies obtained from 137 Cs, and 60 Co radioactive sources. Measurements were performed at narrow-beam transmission geometry using a NaI(Tl) scintillation detector. In addition, all these parameters were theoretically calculated by using WinXCOM program in the energy region of 0.015 to 15 MeV. A good agreement was observed between theoretical and experimental values. Furthermore, energy absorption and exposure buildup factors (EABF and EBF) of obsidian specimens were determined in the energy range of 0.015 to 15 MeV using G-P fitting method. Finally, it can be concluded that these naturally occurring volcanic glasses can be used for radiation shielding applications.

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