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dc.contributor.authorDuval, M
dc.contributor.authorCampana, I
dc.contributor.authorGuilarte, V
dc.contributor.authorMiguens, L
dc.contributor.authorIglesias, J
dc.contributor.authorGonzalez Sierra, S
dc.date.accessioned2017-06-02T04:32:17Z
dc.date.available2017-06-02T04:32:17Z
dc.date.issued2015
dc.identifier.issn1350-4487
dc.identifier.doi10.1016/j.radmeas.2015.01.012
dc.identifier.urihttp://hdl.handle.net/10072/338464
dc.description.abstractGrain size and shape are two important parameters in Electron Spin Resonance (ESR) and Optically Stimulated Luminescence (OSL) dating of sediment, since they have a direct impact on several correction factors that are used for evaluating the dose rate. These parameters were evaluated by static image analysis for a wide range of quartz and feldspar grain samples. Our results indicate that there are many factors that may influence the final grain size and shape. Overall, grains are not perfect spheres, but should be rather approximated to smooth slightly elongated ellipsoids, with a width that is on average about 25% smaller than the length. For multiple grains dating, this may have an influence of a few percents on the beta dose rate evaluation, and thus even less on the total dose rate. However, in the case of single grain dating, the impact may be somewhat more significant given the large variability in size and shape between grains that may be encountered in a natural sediment. For beta micro-dosimetry purpose, it may be thus useful to better characterize the single grain that is going to be dated.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom116
dc.relation.ispartofpageto122
dc.relation.ispartofjournalRadiation Measurements
dc.relation.ispartofvolume81
dc.subject.fieldofresearchGeochronology
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physics
dc.subject.fieldofresearchOther Physical Sciences
dc.subject.fieldofresearchGeology
dc.subject.fieldofresearchcode040303
dc.subject.fieldofresearchcode0202
dc.subject.fieldofresearchcode0299
dc.subject.fieldofresearchcode0403
dc.titleAssessing the uncertainty on particle size and shape: Implications for ESR and OSL dating of quartz and feldspar grains
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionPost-print
gro.rights.copyright© 2015 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorDuval, Mathieu


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