Dielectric and gamma shielding properties of sodium silicate glassy structure modified with tungsten

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dc.authorid0000-0002-0106-7683
dc.contributor.authorKılıç, Mehmet
dc.contributor.authorÇağlar, Mustafa
dc.contributor.authorKarabul, Yaşar
dc.contributor.authorGüven Özdemir, Zeynep
dc.contributor.authorİçelli, Orhan
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T19:49:36Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T19:49:36Z
dc.date.issued2019
dc.departmentİstanbul Medipol Üniversitesi, Sağlık Hizmetleri Meslek Yüksekokulu, Tıbbi Görüntüleme Teknikleri Ana Bilim Dalı
dc.descriptionWOS: 000465570500006
dc.description.abstractIn this study, (x)%Na2Si3O7/(100 - x)%W glassy structured composites where x = 100, 25 and 60 were prepared for the investigation of their dielectric and gamma-ray shielding properties for the first time. The surface morphology of the samples was imaged by Scanning Electron Microscope. The room temperature complex impedance and dielectric function analysis of the samples revealed that the Na2Si3O7/40%W composite has a promising potential for the decoupling capacitor and electromagnetic shielding applications. From this point of view, the gamma-ray shielding performance of the samples including pure Na2Si3O7 was tested by Ba-133 radioactive point source for transmission of the gamma rays at 81 and 356 keV photon energies. The mass attenuation coefficients (mu/rho) of the composites were measured at these energies by using NaI(Tl) scintillation detector. The experimental half-value layer (HVL), tenth-value layer (TVL) and mean free path (lambda) were also calculated. The theoretical values of the (mu/rho), HVL, TVL and lambda were determined by using Monte Carlo N-Particle simulation code and WinXCom for the comparison. A good agreement between the experimental and theoretical results for the gamma-ray shielding parameters was obtained. While the mass attenuation coefficient increased considerably with an increasing tungsten concentration doping, it decreased with increasing gamma-ray energy. It was observed that the mass attenuation coefficient of Na2Si3O7/40%W composite is higher than that of lead at 81 keV. In addition, HVL, TVL and lambda parameters were found to decrease with increasing W doping. Since there is a good agreement between MNCP results and experimental data, the gamma radiation shielding performance of the samples for some low and high energetic gamma-ray sources such as Am-241, I-131, Cs-137 and Co-60. Ultimately, Na2Si3O7/40%W composite can be suggested as a new alternative non-toxic radiation shielding material for low energetic gamma rays.
dc.description.sponsorshipYildiz Technical University Scientific Research Projects Coordination Department [2015-01-01-, KAP06]en_US
dc.description.sponsorshipThis work was supported by Yildiz Technical University Scientific Research Projects Coordination Department under Project number: 2015-01-01-.KAP06. Y. Karabul, one of the authors of the paper, was also supported by a 2228 Tubitak scholarship program.en_US
dc.identifier.citationKılıç, M., Çağlar, M., Karabul, Y., Güven Özdemir, Z. ve İçelli, O. (2019). Dielectric and gamma shielding properties of sodium silicate glassy structure modified with tungsten. Radiation Effects and Defects in Solids, 174(3-4), 229-247. https://dx.doi.org/10.1080/10420150.2018.1552960
dc.identifier.doi10.1080/10420150.2018.1552960
dc.identifier.endpage247
dc.identifier.issn1042-0150
dc.identifier.issn1029-4953
dc.identifier.issue45385
dc.identifier.scopusqualityQ3
dc.identifier.startpage229
dc.identifier.urihttps://dx.doi.org/10.1080/10420150.2018.1552960
dc.identifier.urihttps://hdl.handle.net/20.500.12511/1672
dc.identifier.volume174
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofRadiation Effects and Defects in Solidsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectSodium Silicate
dc.subjectTungsten
dc.subjectGlassy Composite
dc.subjectGamma Ray Shielding
dc.subjectDielectric Rroperties
dc.subjectDecoupling Capacitor
dc.titleDielectric and gamma shielding properties of sodium silicate glassy structure modified with tungsten
dc.typeArticle

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