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Article: Thermal stability of infrared stimulated luminescence of sedimentary K-feldspar

TitleThermal stability of infrared stimulated luminescence of sedimentary K-feldspar
Authors
KeywordsAnomalous fading
K-feldspar
Luminescence
Pulse annealing
Thermal stability
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. 29-36 How to Cite?
AbstractThe thermal stability of the infrared stimulated luminescence (IRSL) signal measured at 50 °C as a function of IR stimulation time was investigated using KF grains extracted from sediments from central China. A dependence of thermal stability of IRSL signal on IR stimulation time and stimulation temperature were observed in pulse annealing studies. Relatively lower thermal stability is given by the initial part of the IRSL measured at 50 °C, than the later part of IRSL curve. Based on these observations, the thermal stability of the post-IR IRSL signal stimulated at elevated temperatures (100-200 °C) was also investigated. It was found that at least two groups of traps (shallow and deep) are associated with the IRSL and post-IR IRSL signals. The IRSL signal obtained at 50 °C is mainly from the shallow traps while the post-IR IRSL obtained at elevated temperatures is mainly from the deep traps. The kinetics parameters obtained using pulse annealing test indicate that the shallow IRSL traps are probably associated with the ∼300-350 °C TL peak and the deep traps are probably associated with the ∼400 °C TL peak. The shallow traps (∼350 °C TL peak) are associated with those easy-to-fade traps and the deep traps (∼400 °C TL peak) are associated with hard-to-fade traps. © 2010 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/139204
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
University of Hong Kong200807176166
Funding Information:

Prof. Jimin Sun is thanked for helping with sample collection. Dr. Jakob Wallinga and an anonymous referee are appreciated for providing valuable comments on the manuscripts. This study was financially supported by the grants to Sheng-hua Li from the Research Grant Council of the Hong Kong Special Administrative Region, China (Project no. 7035/06P, 7035/07P and 7028/08P) and the "small project funding" grant to Bo Li from the University of Hong Kong (Project code. 200807176166).

References

 

DC FieldValueLanguage
dc.contributor.authorLi, Ben_HK
dc.contributor.authorLi, SHen_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. 29-36en_HK
dc.identifier.issn1350-4487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139204-
dc.description.abstractThe thermal stability of the infrared stimulated luminescence (IRSL) signal measured at 50 °C as a function of IR stimulation time was investigated using KF grains extracted from sediments from central China. A dependence of thermal stability of IRSL signal on IR stimulation time and stimulation temperature were observed in pulse annealing studies. Relatively lower thermal stability is given by the initial part of the IRSL measured at 50 °C, than the later part of IRSL curve. Based on these observations, the thermal stability of the post-IR IRSL signal stimulated at elevated temperatures (100-200 °C) was also investigated. It was found that at least two groups of traps (shallow and deep) are associated with the IRSL and post-IR IRSL signals. The IRSL signal obtained at 50 °C is mainly from the shallow traps while the post-IR IRSL obtained at elevated temperatures is mainly from the deep traps. The kinetics parameters obtained using pulse annealing test indicate that the shallow IRSL traps are probably associated with the ∼300-350 °C TL peak and the deep traps are probably associated with the ∼400 °C TL peak. The shallow traps (∼350 °C TL peak) are associated with those easy-to-fade traps and the deep traps (∼400 °C TL peak) are associated with hard-to-fade traps. © 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.subjectAnomalous fadingen_HK
dc.subjectK-feldsparen_HK
dc.subjectLuminescenceen_HK
dc.subjectPulse annealingen_HK
dc.subjectThermal stabilityen_HK
dc.titleThermal stability of infrared stimulated luminescence of sedimentary K-feldsparen_HK
dc.typeArticleen_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.2010.10.002en_HK
dc.identifier.scopuseid_2-s2.0-78650808074en_HK
dc.identifier.hkuros194739en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650808074&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue1en_HK
dc.identifier.spage29en_HK
dc.identifier.epage36en_HK
dc.identifier.isiWOS:000286720600004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, B=36072316000en_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK
dc.identifier.citeulike8210149-

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