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Article: Isochron measurements of naturally irradiated K-feldspar grains

TitleIsochron measurements of naturally irradiated K-feldspar grains
Authors
KeywordsAnomalous fading
Infrared stimulated luminescence
Isochron
K-feldspars
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeas
Citation
Radiation Measurements, 2007, v. 42 n. 8, p. 1315-1327 How to Cite?
AbstractThe equivalent doses of K-feldspar grains in a range of grain sizes from 90 to 250 μ m diameter were measured using a single-aliquot regenerative-dose protocol for the infrared stimulated luminescence (IRSL) signals for two samples of desert sand. The equivalent doses for each sample were compared with that for the 125 - 150 μ m grains of quartz from the same samples. The results suggested that the K-feldspar equivalent doses were underestimated because of anomalous fading. Measurements of the decay of the IRSL signals following laboratory irradiation for these two samples, and an additional one from a previously published isochron study, showed anomalous fading during the period of laboratory storage. The decay rate was about 3% per decade for all samples and was independent of the grain size used. Using plots of equivalent doses for K-feldspars as a function of their calculated internal dose rate, and the quartz equivalent dose as a function of grain size, it was concluded that the IRSL signal derived from the internal dose rate had not faded over the 13,000 years that had elapsed since the grains were deposited. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72769
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.contributor.authorWintle, AGen_HK
dc.contributor.authorZhao, Hen_HK
dc.date.accessioned2010-09-06T06:44:56Z-
dc.date.available2010-09-06T06:44:56Z-
dc.date.issued2007en_HK
dc.identifier.citationRadiation Measurements, 2007, v. 42 n. 8, p. 1315-1327en_HK
dc.identifier.issn1350-4487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72769-
dc.description.abstractThe equivalent doses of K-feldspar grains in a range of grain sizes from 90 to 250 μ m diameter were measured using a single-aliquot regenerative-dose protocol for the infrared stimulated luminescence (IRSL) signals for two samples of desert sand. The equivalent doses for each sample were compared with that for the 125 - 150 μ m grains of quartz from the same samples. The results suggested that the K-feldspar equivalent doses were underestimated because of anomalous fading. Measurements of the decay of the IRSL signals following laboratory irradiation for these two samples, and an additional one from a previously published isochron study, showed anomalous fading during the period of laboratory storage. The decay rate was about 3% per decade for all samples and was independent of the grain size used. Using plots of equivalent doses for K-feldspars as a function of their calculated internal dose rate, and the quartz equivalent dose as a function of grain size, it was concluded that the IRSL signal derived from the internal dose rate had not faded over the 13,000 years that had elapsed since the grains were deposited. © 2007 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.subjectAnomalous fadingen_HK
dc.subjectInfrared stimulated luminescenceen_HK
dc.subjectIsochronen_HK
dc.subjectK-feldsparsen_HK
dc.titleIsochron measurements of naturally irradiated K-feldspar grainsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1350-4487&volume=42&spage=1315&epage=1327&date=2007&atitle=Isochron+measurements+of+naturally+irradiated+K-feldspar+grainsen_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.2007.09.008en_HK
dc.identifier.scopuseid_2-s2.0-36048991290en_HK
dc.identifier.hkuros139827en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-36048991290&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue8en_HK
dc.identifier.spage1315en_HK
dc.identifier.epage1327en_HK
dc.identifier.isiWOS:000251921900008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, B=36072316000en_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK
dc.identifier.scopusauthoridWintle, AG=7005930050en_HK
dc.identifier.scopusauthoridZhao, H=7404778046en_HK

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