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Conference Paper: TL dating technique based on a trap model and its application as a geochronometer for granitic quartz

TitleTL dating technique based on a trap model and its application as a geochronometer for granitic quartz
Authors
Issue Date1999
PublisherOxford University Press. The Journal's web site is located at http://rpd.oxfordjournals.org/
Citation
Radiation Protection Dosimetry, 1999, v. 84 n. 1-4, p. 471-478 How to Cite?
AbstractA trap model is introduced to describe the behaviours of both thermally sensitive and radiation sensitive TL traps. The former are relatively shallow traps. The latter are deep traps, in which population increases with exposure to alpha dose. Thermal decay of both types of traps at ambient temperature is dependent on the trap lifetimes. A trap's population can be measured as TL sensitivity to a laboratory test dose. The trap model has been supported by observations of age dependent TL signals from granitic quartz samples with different crystallisation ages. The trap lifetimes are from 1.98 x 109 to 5.36 X 1015 years estimated using the isothermal decay experiment with the assumption of first order kinetics. Dating techniques are proposed based on the trap model. For old granites (> 400 Ma), ages can be obtained by measuring the total exposed alpha dose using the additive alpha dose method, whereas for young granites (< 400 Ma), ages can also be obtained by interpolating the TL sensitivity to a curve of TL sensitivities for known ages.
Persistent Identifierhttp://hdl.handle.net/10722/152510
ISSN
2015 Impact Factor: 0.894
2015 SCImago Journal Rankings: 0.456
References

 

DC FieldValueLanguage
dc.contributor.authorHan, ZYen_US
dc.contributor.authorLi, SHen_US
dc.contributor.authorTso, MYWen_US
dc.date.accessioned2012-06-26T06:40:37Z-
dc.date.available2012-06-26T06:40:37Z-
dc.date.issued1999en_US
dc.identifier.citationRadiation Protection Dosimetry, 1999, v. 84 n. 1-4, p. 471-478en_US
dc.identifier.issn0144-8420en_US
dc.identifier.urihttp://hdl.handle.net/10722/152510-
dc.description.abstractA trap model is introduced to describe the behaviours of both thermally sensitive and radiation sensitive TL traps. The former are relatively shallow traps. The latter are deep traps, in which population increases with exposure to alpha dose. Thermal decay of both types of traps at ambient temperature is dependent on the trap lifetimes. A trap's population can be measured as TL sensitivity to a laboratory test dose. The trap model has been supported by observations of age dependent TL signals from granitic quartz samples with different crystallisation ages. The trap lifetimes are from 1.98 x 109 to 5.36 X 1015 years estimated using the isothermal decay experiment with the assumption of first order kinetics. Dating techniques are proposed based on the trap model. For old granites (> 400 Ma), ages can be obtained by measuring the total exposed alpha dose using the additive alpha dose method, whereas for young granites (< 400 Ma), ages can also be obtained by interpolating the TL sensitivity to a curve of TL sensitivities for known ages.en_US
dc.languageengen_US
dc.publisherOxford University Press. The Journal's web site is located at http://rpd.oxfordjournals.org/en_US
dc.relation.ispartofRadiation Protection Dosimetryen_US
dc.titleTL dating technique based on a trap model and its application as a geochronometer for granitic quartzen_US
dc.typeConference_Paperen_US
dc.identifier.emailLi, SH:shli@hku.hken_US
dc.identifier.authorityLi, SH=rp00740en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0032767519en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032767519&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume84en_US
dc.identifier.issue1-4en_US
dc.identifier.spage471en_US
dc.identifier.epage478en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridHan, ZY=7402859525en_US
dc.identifier.scopusauthoridLi, SH=24438103700en_US
dc.identifier.scopusauthoridTso, MYW=7102052118en_US

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