Determination of Build-up Factors for Natural Black Obsidian Ores

Küçük, N.; Gezer, Onur

doi:10.5578/fmbd.66223

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…The dominant effect in high energy region is pair production, and this causes a strong absorption of photons. Therefore, the buildup factors again decrease in the high energy region [32]. As seen in Figs.…”

Section: Resultsmentioning

confidence: 75%

A study on radiation shielding potentials of green and red clayey soils in Turkey reinforced with marble dust and waste tire

Aygün

Aygun

Yarbaşı

2021

Journal of New Results in Science

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The increasing radiation applications in our daily life makes it essential to protect ourselves from the harms of radiation by using alternative, cheap and natural materials. The present study aimed to analyze the radiation shielding abilities of green and red clayey soils from Oltu/Erzurum in Turkey, reinforced with waste tires and marble dust. For the purpose to investigate the shielding features of the samples, radiation attenuation parameters were determined by using EpiXS software, which can calculate partial or total cross-sections, partial or total mass attenuation coefficients, electron densities, effective atomic numbers, and buildup factors for energy absorption and exposure between 1keV and 1GeV. We compared the obtained mass attenuation coefficients and total atomic cross-section values of the samples with those of a widely used shielding material, ordinary concrete, to make a meaningful evaluation about the shielding potentials of the samples. To validate obtained values by EpiXS, we also calculated the mass attenuation coefficients of the samples by XCOM code, and compatible results were obtained. Among all the studied clayey soil samples, green clay reinforced with marble dust and waste tire has the highest shielding capability. It can also be mentioned that reinforcement with marble dust and waste tire improves the shielding ability of the clayey soils.

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Section: Resultsmentioning

confidence: 75%

A study on radiation shielding potentials of green and red clayey soils in Turkey reinforced with marble dust and waste tire

Aygün

Aygun

Yarbaşı

2021

Journal of New Results in Science

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“…Additionally, the obtained Zeff values of the Inconel-617 and Incoloy-800HT, are also higher than the Zeff values of RS 253 glass, ordinary concrete, hematite-serpenite and basaltmagnetite calculated by Alım [30] and hence, the alloys show dominating process at high energies is Pair production and a strong photon absorption is observed in this region. Therefore, at higher energies the buildup factors decrease [34,35]. The obtained values of EABF and EBF show that the photons cluster a little more for 800HT alloy than 617 alloy.…”

Section: Resultsmentioning

confidence: 79%

Evaluation of radiation shielding potentials of Ni-based alloys, Inconel-617 and Incoloy-800HT, candidates for high temperature applications especially for nuclear reactors, by EpiXS and Phy-X/PSD codes

Aygün¹,

Aygun²

2023

Politeknik Dergisi

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In this paper, our purpose is to calculate photon-matter interaction parameters of Ni-based alloys, Inconel-617 and Incoloy-800HT, which are the main candidates for high-temperature applications such as spacecraft, gas turbines, nuclear reactors and rocket motors. The radiation attenuation parameters and buildup factors were obtained in a wide energy range by using Phy-X/PSD and EpiXS softwares to determine the radiation protection capabilities of the alloys. Fast neutron removal cross sections of the alloys were also calculated. It was observed that Inconel-617 has higher shielding ability than Incoloy-800HT. The shielding potentials of the alloys were compared with those of other shielding materials (ordinary concrete, hematite-serpenite, ilmenite-limonite, steelscrap, basalt-magnetite, steel-magnetite and ilmenite concretes) reported before, and it was concluded that Inconel-617 and Incoloy-800HT have more shielding ability than those.

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“…Apart from that, in Turkey; Obsidian ores were also found in Kars, Mount Ararat and its vicinity and Pasinler. Therefore, Turkey is a very rich country in terms of obsidian ore reserves (Küçük and Gezer 2017).…”

Section: Introductıonmentioning

confidence: 99%

Determining The Natural Radiation Level And Gamma Absorption Coefficient Of İkizdere Obsidian

Duran

Küçükömeroğlu

Çiriş

et al. 2022

Preprint

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In the present work, natural radionuclide levels and mass attenuation coefficient of obsidian samples taken from Rize İkizdere region were investigated. The mass attenuation coefficient (μ ρ-1) is investigated experimentally and theoretically for 14 İkizdere obsidian rocks. The mass attenuation coefficients of the samples were measured experimentally at photon energies of radioisotopes 133Ba (81 keV, 302 keV, 356 keV), 137Cs (662 keV), Theoretically, the simulation results of μ ρ-1 using XCOM code was compared with experimental results. In addition, elemental analyzes of obsidian samples were made. Average 238U, 232Th and 40K activities were determined as 93±9, 67±7, 1027±19 Bq m-3, respectively. The absorption coefficient of obsidian at 356 and 662 keV energies is not much different from other rocks.

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Determination of Build-up Factors for Natural Black Obsidian Ores

Cited by 8 publications

References 15 publications

A study on radiation shielding potentials of green and red clayey soils in Turkey reinforced with marble dust and waste tire

A study on radiation shielding potentials of green and red clayey soils in Turkey reinforced with marble dust and waste tire

Evaluation of radiation shielding potentials of Ni-based alloys, Inconel-617 and Incoloy-800HT, candidates for high temperature applications especially for nuclear reactors, by EpiXS and Phy-X/PSD codes

Determining The Natural Radiation Level And Gamma Absorption Coefficient Of İkizdere Obsidian

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