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Article: Observation of unstable fast component in OSL of quartz

TitleObservation of unstable fast component in OSL of quartz
Authors
KeywordsFast component
OSL
Quartz
Thermal instability
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeas
Citation
Radiation Measurements, 2011, v. 46 n. 1, p. 21-28 How to Cite?
AbstractOptically stimulated luminescence (OSL) dating has been applied to quartz grains extracted from a sedimentary layer containing stone tools from the bank of Salawusu River, Mu Us desert in central China. Severe age underestimation was observed by applying the single-aliquot regenerative dose (SAR) dating method when compared with the isochron infrared stimulated luminescence (iIRSL) dating results using potassium-rich feldspar grains of different grain sizes. Preheating plateau and dose recovery tests suggest that the SAR protocol is robust for this sample. Component resolving indicates that the OSL signals were dominated by the fast component. However, the fast component is thermally unstable as shown by pulse-annealing measurements and single-grain study. This leads to OSL age underestimation. To overcome this problem, a method was proposed by combining equivalent dose (De) determination and pulse-annealing experiments using single-grain measurements to select only those grains with the thermally stable signals. For those quartz grains with thermally stable OSL signals, the ages obtained are consistent with iIRSL results. © 2010 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/139203
ISSN
2015 Impact Factor: 1.071
2015 SCImago Journal Rankings: 0.592
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of the Hong Kong Special Administrative Region, China7035/06P
7035/07P
7028/08P
Funding Information:

We thank two anonymous reviewers for their comments. This study was financially supported by the grants to SHL from the Research Grant Council of the Hong Kong Special Administrative Region, China (Project no. 7035/06P, 7035/07P and 7028/08P).

References

 

DC FieldValueLanguage
dc.contributor.authorFan, Aen_HK
dc.contributor.authorLi, SHen_HK
dc.contributor.authorLi, Ben_HK
dc.date.accessioned2011-09-23T05:46:36Z-
dc.date.available2011-09-23T05:46:36Z-
dc.date.issued2011en_HK
dc.identifier.citationRadiation Measurements, 2011, v. 46 n. 1, p. 21-28en_HK
dc.identifier.issn1350-4487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139203-
dc.description.abstractOptically stimulated luminescence (OSL) dating has been applied to quartz grains extracted from a sedimentary layer containing stone tools from the bank of Salawusu River, Mu Us desert in central China. Severe age underestimation was observed by applying the single-aliquot regenerative dose (SAR) dating method when compared with the isochron infrared stimulated luminescence (iIRSL) dating results using potassium-rich feldspar grains of different grain sizes. Preheating plateau and dose recovery tests suggest that the SAR protocol is robust for this sample. Component resolving indicates that the OSL signals were dominated by the fast component. However, the fast component is thermally unstable as shown by pulse-annealing measurements and single-grain study. This leads to OSL age underestimation. To overcome this problem, a method was proposed by combining equivalent dose (De) determination and pulse-annealing experiments using single-grain measurements to select only those grains with the thermally stable signals. For those quartz grains with thermally stable OSL signals, the ages obtained are consistent with iIRSL results. © 2010 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeasen_HK
dc.relation.ispartofRadiation Measurementsen_HK
dc.subjectFast componenten_HK
dc.subjectOSLen_HK
dc.subjectQuartzen_HK
dc.subjectThermal instabilityen_HK
dc.titleObservation of unstable fast component in OSL of quartzen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1350-4487&volume=46&issue=1&spage=21&epage=28&date=2011&atitle=Observation+of+unstable+fast+component+in+OSL+of+quartz-
dc.identifier.emailLi, SH:shli@hku.hken_HK
dc.identifier.emailLi, B:boli@hku.hken_HK
dc.identifier.authorityLi, SH=rp00740en_HK
dc.identifier.authorityLi, B=rp00736en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.radmeas.2010.10.001en_HK
dc.identifier.scopuseid_2-s2.0-78650816971en_HK
dc.identifier.hkuros194737en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650816971&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue1en_HK
dc.identifier.spage21en_HK
dc.identifier.epage28en_HK
dc.identifier.isiWOS:000286720600003-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFan, A=35071227800en_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK
dc.identifier.scopusauthoridLi, B=36072316000en_HK
dc.identifier.citeulike8163671-

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