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dc.contributor.authorDuval, Mathieu
dc.date.accessioned2017-06-02T12:00:45Z
dc.date.available2017-06-02T12:00:45Z
dc.date.issued2012
dc.identifier.issn0735-1348
dc.identifier.urihttp://hdl.handle.net/10072/338548
dc.description.abstractA single saturating exponential (SSE) function is classically used in ESR dating to fit the experimental ESR data points derived from the aluminum (Al) center in quartz. However, this function has some obvious limits as it does not accurately fit the data points of the dose response curve. This results in unreliable equivalent dose (DE) values which are highly dependent on the maximum irradiation dose. Dose response curves of Al center in quartz show that the dose response data contain at least two components: a first one dominating at low dose (usually < 5 kGy) and saturating quite quickly and a second one dominating at higher doses with an almost linear behavior. These data are more appropriately fitted with a function combining an exponential with a linear term (EXP+LIN). Two variations of the EXP+LIN function were studied, each one corresponding to distinct physical assumptions. Since it is still unclear which one should be preferred, the mean DE value extracted from the fitting of the two equations may be reasonably considered as the most reliable estimate of the true DE value. In addition, to ensure accurate fitting of the linear part, it is important to have at least three data points at high doses (>10 kGy). It is also suggested to pool all the ESR intensities derived from repeated ESR measurements of each aliquot in the fitting process, in order to reduce the error in the DE value.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherEast Carolina University, Luminescence Dosimetry Laboratory
dc.publisher.urihttp://www.ecu.edu/cs-cas/physics/ancient-timeline/ATL30.cfm
dc.relation.ispartofpagefrom41
dc.relation.ispartofpageto50
dc.relation.ispartofissue2
dc.relation.ispartofjournalAncient TL
dc.relation.ispartofvolume30
dc.subject.fieldofresearchGeochronology
dc.subject.fieldofresearchGeochemistry
dc.subject.fieldofresearchGeology
dc.subject.fieldofresearchcode040303
dc.subject.fieldofresearchcode0402
dc.subject.fieldofresearchcode0403
dc.titleDose response curve of the ESR signal of the Aluminum center in quartz grains extracted from sediment
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2012 East Carolina University. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorDuval, Mathieu


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