EPR study of radicals produced by gamma-irradiation in marine mollusc (Venus sp.) fossils

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dc.contributor.authorKoseoglu, R
dc.contributor.authorKoksal, F
dc.contributor.authorCiftci, E
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2004
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this study, gamma-irradiated marine mollusc (Venus sp.) fossils were investigated by electron paramagnetic resonance (EPR) at ambient temperature. Powder X-ray diffraction technique indicates that the Venus sp. fossils were made mainly of CaCO3. Before gamma-irradiation, the EPR lines of the powder of fossil samples showed the existence of Mn2+ (I = 5/2, 100% natural abundance) ions with g(av) = 2.0055 and A(av) = 9.4 mT gamma-Irradiation-induced additional defects in Venus sp. fossil were attributed to axial CO3- (gperpendicular to = 2.0171, g// = 2.0048), orthorhombic CO2- (g(x) = 2.0030, g(z) = 2.0018, g(y) = 1.9973, g(av) = 2.0007), freely rotating CO2- (g(iso) = 2.0007), isotropic SO2- (g = 2.0057), axial SO3- (g perpendicular to = 2.0036, g// = 2.0024) and isotropic SO3- (g = 2.0032) free radicals. The g-values of these free radicals were compared with the literature data belonging to similar defects.
dc.identifier.doi10.1080/10420150412331296862
dc.identifier.endpage502
dc.identifier.issn1042-0150
dc.identifier.issue45543
dc.identifier.scopus2-s2.0-28244435178
dc.identifier.scopusqualityQ3
dc.identifier.startpage497
dc.identifier.urihttps://dx.doi.org/10.1080/10420150412331296862
dc.identifier.urihttps://hdl.handle.net/11480/5651
dc.identifier.volume159
dc.identifier.wosWOS:000226384900006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherTAYLOR & FRANCIS LTD
dc.relation.ispartofRADIATION EFFECTS AND DEFECTS IN SOLIDS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEPR
dc.subjectmollusc
dc.subjectfossil
dc.subjectgamma-irradiation
dc.subjectfree radicals
dc.titleEPR study of radicals produced by gamma-irradiation in marine mollusc (Venus sp.) fossils
dc.typeArticle

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