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Article: Correcting for thermal transfer in OSL measurements of young sediment samples

TitleCorrecting for thermal transfer in OSL measurements of young sediment samples
Authors
KeywordsEquivalent dose
OSL
Quartz
Thermal transfer
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeas
Citation
Radiation Measurements, 2006, v. 41 n. 7-8, p. 855-861 How to Cite?
AbstractOverestimation of equivalent dose (De) values due to thermal transfer was observed for quartz when using the single-aliquot regenerative-dose protocol (SAR) to recover a small known dose (1.74 Gy) given after an optical bleach. Both the fast and medium components resulted in overestimation, with the effect being larger for the medium component and the effect could be seen in De (t) plot as stimulation time increased. The dose-generated OSL signal can be distinguished from the thermally transferred signal based on the linear relationship between the initial and final parts of the thermally transferred OSL curves. A method is proposed to correct for thermal-transfer effects using the OSL signals measured in repeated heat/OSL cycles incorporated into the SAR protocol. This approach was applied to artificially irradiated and optically bleached samples, and it was found that the thermal-transfer effects can be removed when using only a single aliquot. In dose recovery tests, the known dose (1.74 Gy) could be obtained using this approach and a value of 0.074 ± 0.026 Gy was obtained for optically bleached aliquots. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72495
ISSN
2015 Impact Factor: 1.071
2015 SCImago Journal Rankings: 0.592
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Ben_HK
dc.contributor.authorLi, SHen_HK
dc.date.accessioned2010-09-06T06:42:23Z-
dc.date.available2010-09-06T06:42:23Z-
dc.date.issued2006en_HK
dc.identifier.citationRadiation Measurements, 2006, v. 41 n. 7-8, p. 855-861en_HK
dc.identifier.issn1350-4487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72495-
dc.description.abstractOverestimation of equivalent dose (De) values due to thermal transfer was observed for quartz when using the single-aliquot regenerative-dose protocol (SAR) to recover a small known dose (1.74 Gy) given after an optical bleach. Both the fast and medium components resulted in overestimation, with the effect being larger for the medium component and the effect could be seen in De (t) plot as stimulation time increased. The dose-generated OSL signal can be distinguished from the thermally transferred signal based on the linear relationship between the initial and final parts of the thermally transferred OSL curves. A method is proposed to correct for thermal-transfer effects using the OSL signals measured in repeated heat/OSL cycles incorporated into the SAR protocol. This approach was applied to artificially irradiated and optically bleached samples, and it was found that the thermal-transfer effects can be removed when using only a single aliquot. In dose recovery tests, the known dose (1.74 Gy) could be obtained using this approach and a value of 0.074 ± 0.026 Gy was obtained for optically bleached aliquots. © 2006 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeasen_HK
dc.relation.ispartofRadiation Measurementsen_HK
dc.subjectEquivalent doseen_HK
dc.subjectOSLen_HK
dc.subjectQuartzen_HK
dc.subjectThermal transferen_HK
dc.titleCorrecting for thermal transfer in OSL measurements of young sediment samplesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1350-4487&volume=41&spage=855&epage=861&date=2006&atitle=Correcting+for+thermal+transfer+in+OSL+measurements+of+young+sediment+samplesen_HK
dc.identifier.emailLi, B:boli@hku.hken_HK
dc.identifier.emailLi, SH:shli@hku.hken_HK
dc.identifier.authorityLi, B=rp00736en_HK
dc.identifier.authorityLi, SH=rp00740en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.radmeas.2006.04.008en_HK
dc.identifier.scopuseid_2-s2.0-33745679766en_HK
dc.identifier.hkuros128845en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33745679766&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume41en_HK
dc.identifier.issue7-8en_HK
dc.identifier.spage855en_HK
dc.identifier.epage861en_HK
dc.identifier.isiWOS:000242117100022-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, B=36072316000en_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK

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