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hal.structure.identifierAberystwyth University
hal.structure.identifierArchéosciences Bordeaux
hal.structure.identifierInstitut für Geowissenschaften [Heidelberg]
dc.contributor.authorKREUTZER, Sebastian
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorMERCIER, Norbert
hal.structure.identifierDépartement des Sciences de la Terre et de l'Atmosphère - UQAM
dc.contributor.authorLAMOTHE, Michel
dc.date.issued2022-08
dc.identifier.issn1350-4487
dc.description.abstractEnInfrared radiofluorescence (IR-RF) of K-feldspar is a luminescence dating method proposed for chronologies of older sediments in Quaternary science. Its key advantages are higher saturation doses than optically stimulated quartz luminescence and long-term stability (no fading). However, while successful dating applications using IR-RF seem to become more frequent, both key advantages, dose saturation and signal stability, are still insufficiently constrained. Here we report on IR-RF spectrometry and spatially resolved IR-RF measurements of batches of one K-feldspar sample from the Médoc area in Southwest France. The RF spectrometry measurements revealed a bright decaying RF peak at ca 1.43 eV (867 nm), and component deconvolution of 528 spectra revealed additional peaks at ca 1.37 eV (905 nm), ca 1.71 eV (725 nm), ca 2.2 eV (564 nm), and ca 2.7 eV (459 nm). Confirmed by spatially resolved IR-RF measurements, dose-response measurements reveal that a given additive gamma-dose can be reproduced up to 1 kGy after a storage period of up to 30 months after the irradiation.In summary, our study tends to confirm that the IR-RF signal is stable and does not suffer from athermal fading. The observed saturation dose is in accordance with values published in the literature. It renders IR-RF a potent chronological tool; however, it appears that equivalent dose values above 1.2 kGy should be considered cautiously. Our study is limited to a single sample, and future studies may confirm and further constrain our results. Measurement and processed data of our study are available open access.
dc.description.sponsorshipUsing the world in ancient societies : processes and forms of appropriation of space in Long Time - ANR-10-LABX-0052
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://hal.archives-ouvertes.fr/licences/copyright/
dc.subject.enIR-RF
dc.subject.enK-feldspar
dc.subject.enSpectrometry
dc.subject.enDose saturation
dc.subject.enLuminescence dating
dc.title.enInfrared-radiofluorescence: Dose saturation and long-term signal stability of a K-feldspar sample
dc.typeArticle de revue
dc.identifier.doi10.1016/j.radmeas.2022.106818
dc.subject.halPhysique [physics]
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre
bordeaux.journalRadiation Measurements
bordeaux.page106818
bordeaux.volume156
bordeaux.peerReviewedoui
hal.identifierhal-03712097
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03712097v1
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