Electron paramagnetic resonance of rhyolite and ?-irradiated Trona minerals

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dc.contributor.authorKöksal F.
dc.contributor.authorKöseoglu R.
dc.contributor.authorBaşaran E.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2003
dc.departmentNiğde ÖHÜ
dc.description.abstractRhyolite from the "Yellow Stone of Nevşehir" and ?-irradiated trona from the Ankara Mine have been investigated by electron paramagnetic resonance at ambient temperature and at 113 K. Rhyolite was examined by X-ray powder diffraction and found to consist mainly of SO2. Before ?-irradiation, the existing paramagnetic species in rhyolite were identified as ?O4 2-, CH2OH, CO3 -, ?O2 -, CO3 3-, and CO2 - free radicals and Fe3+ at ambient temperature. At 113 K ?O2 -, CO3 3-, and CO2 - radicals and Fe3+ were observed. The ?-irradiation produced neither new species nor detectable effects on these free radicals. The disappearance of some of the radicals at 113 K is attributed to the freezing of their motions. Before ?-irradiation, the trona mineral shows only Mn2+ lines, but after ?-irradiation it indicated the inducement of CO3 3- and CO2 - radicals at ambient temperature, 113 K, in addition to the Mn2+ lines. The g and a values of the species were determined.
dc.identifier.doi10.1515/zna-2003-5-607
dc.identifier.endpage298
dc.identifier.issn0932-0784
dc.identifier.issue45448
dc.identifier.scopus2-s2.0-8144223754
dc.identifier.scopusqualityQ3
dc.identifier.startpage293
dc.identifier.urihttps://dx.doi.org/10.1515/zna-2003-5-607
dc.identifier.urihttps://hdl.handle.net/11480/1351
dc.identifier.volume58
dc.identifier.wosWOS:000184274600006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherVerlag der Zeitschrift fur Naturforschung
dc.relation.ispartofZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectElectron Paramagnetic Resonance
dc.subjectFree Radicals
dc.subjectRhyolite
dc.subjectSilicate
dc.subjectTrona
dc.subject?-Irradiation
dc.titleElectron paramagnetic resonance of rhyolite and ?-irradiated Trona minerals
dc.typeArticle

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