Publication:
Electron Paramagnetic Resonance of Natural and Γ-Irradiated Alunite and Kaolin Mineral Powders

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dc.authorscopusid35555793900
dc.authorscopusid55909091300
dc.authorscopusid14630999900
dc.authorscopusid6701401592
dc.authorscopusid9640141700
dc.contributor.authorKöksal, F.
dc.contributor.authorKöseoǧlu, R.
dc.contributor.authorS¸aka, I.
dc.contributor.authorBaşaran, E.
dc.contributor.authorŞener, F.
dc.date.accessioned2020-06-21T15:39:04Z
dc.date.available2020-06-21T15:39:04Z
dc.date.issued2004
dc.departmentOndokuz Mayıs Üniversitesien_US
dc.department-temp[Köksal] Fevzi, Department of Physics, Ondokuz Mayis University Faculty of Science and Arts, Samsun, Turkey; [Köseoǧlu] Rahmi, Halil Bayraktar Professional Higher School for Health Services, Erciyes Üniversitesi, Kayseri, Kayseri, Turkey; [S¸aka] Irfan, Department of Physics, Ondokuz Mayis University Faculty of Science and Arts, Samsun, Turkey; [Başaran] Engin, Department of Physics, Gebze Teknik Üniversitesi, Gebze, Kocaeli, Turkey; [Şener] Fahrettin, Maden Tetkik ve Arama Genel Mudurlugu, Ankara, Turkeyen_US
dc.description.abstractNatural alunite and kaolin minerals obtained from West Anatolia were investigated by electron paramagnetic resonance (EPR) in natural and γ-irradiated states at room temperature and at 113K. The paramagnetic centres at ambient temperature in natural alunite were attributed to the ĊH<inf>2</inf>OH, ĊO<inf>3</inf>-, ṠO<inf>2</inf> -, ĊO<inf>2</inf>- and [AlO<inf>4</inf>]0 radicals. In natural kaolin, the paramagnetic centres were attributed to the ĊO<inf>3</inf>-, ṠO<inf>2</inf>-, ĊO <inf>2</inf>- and [AlO<inf>4</inf>]0 radicals. The γ-irradiation does not produce any detectable effects on these radicals. At 113 K, the lines for ĊH<inf>2</inf>OH could not be observed well, probably due to the anisotropic behaviour of the hyperfine interaction of the methylene protons, but the lines for [AlO<inf>4</inf>]0 centres were found to be perfectly observable at above 20 mW microwave power in both alunite and kaolin powders before and after γ-irradiation. The EPR parameters of the observed paramagnetic centres were reported.en_US
dc.identifier.doi10.1080/10420150412331304169
dc.identifier.endpage398en_US
dc.identifier.issn1042-0150
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-28344437277
dc.identifier.scopusqualityQ3
dc.identifier.startpage393en_US
dc.identifier.urihttps://doi.org/10.1080/10420150412331304169
dc.identifier.volume159en_US
dc.identifier.wosWOS:000225220200006
dc.identifier.wosqualityQ3
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofRadiation Effects and Defects in Solidsen_US
dc.relation.journalRadiation Effects and Defects in Solidsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAluniteen_US
dc.subjectElectron Paramagnetic Resonanceen_US
dc.subjectFree Radicalsen_US
dc.subjectKaolinen_US
dc.titleElectron Paramagnetic Resonance of Natural and Γ-Irradiated Alunite and Kaolin Mineral Powdersen_US
dc.typeArticleen_US
dspace.entity.typePublication

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