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dc.contributor.author Tsukamoto, Sumiko
dc.contributor.author Duller, Geoffrey Alastair Thomas
dc.contributor.author Wintle, Ann G.
dc.date.accessioned 2011-01-13T12:11:46Z
dc.date.available 2011-01-13T12:11:46Z
dc.date.issued 2008-08
dc.identifier.citation Tsukamoto , S , Duller , G A T & Wintle , A G 2008 , ' Characteristics of thermally transferred optically stimulated luminescence (TT-OSL) in quartz and its potential for dating sediments ' Radiation Measurements , vol 43 , no. 7 , pp. 1204-1218 . , 10.1016/j.radmeas.2008.02.018 en
dc.identifier.issn 1350-4487
dc.identifier.other PURE: 157128
dc.identifier.other dspace: 2160/6090
dc.identifier.uri http://hdl.handle.net/2160/6090
dc.description Tsukamoto, S., Duller, G. A. T., Wintle, A. G. (2008). Characteristics of thermally transferred optically stimulated luminescence (TT-OSL) in quartz and its potential for dating sediments. Radiation Measurements, 43(7): 1204-1218. Sponsorship: NERC EFCHED Grant NER/T/S/2002/00677 en
dc.description.abstract The temperature dependence, dose response and bleaching characteristics of the thermally transferred optically stimulated luminescence (TT-OSL) of sedimentary quartz were studied, in order to assess the potential of the TT-OSL signal for dating. The TT-OSL was separated into two components; recuperated OSL (ReOSL) and basic transfer (BT-OSL) by annealing samples at 300 degrees C for 10s as suggested in an earlier study. Four quartz extracts were studied, two from loess from China and two from coastal sands from South Africa. The equivalent doses of the two recent samples (one sand and one loess) were similar to 15 Gy and this suggests that the signal can be bleached by sunlight but may not be totally zeroed. The sensitivity-corrected ReOSL from the older samples did not reach zero and gave doses of 14 and 52 Gy, respectively, after 7 days bleaching with a solar simulator. A single aliquot regenerative dose (SAR) protocol using ReOSL was proposed and tested. In this protocol, a blue light stimulation at 280 degrees C for 100s at the end of each cycle resulted in the recovery of identical sensitivity-corrected ReOSL values, in spite of similar to 20-30% loss in sensitivity for the four samples that were tested. Two dose response curves were constructed using the sensitivity-corrected ReOSL, one for the initial 2 s signal and the other for the fast component obtained by curve fitting. Using the additional high temperature bleach and the separated fast component of the ReOSL, it was possible to recover given doses within 10%, up to similar to 1000 Gy for the loess and similar to 2000 Gy for the coarse grained quartz. However, the natural dose obtained for the older sand was twice that obtained using the conventional SAR OSL method. (C) 2008 Elsevier Ltd. All rights reserved. en
dc.format.extent 15 en
dc.language.iso eng
dc.relation.ispartof Radiation Measurements en
dc.subject Thermally transferred OSL en
dc.subject FINE-GRAINED QUARTZ en
dc.subject VOLCANIC QUARTZ en
dc.subject CHINESE LOESS en
dc.subject ISOTHERMAL TL en
dc.subject REGENERATIVE-DOSE PROTOCOL en
dc.subject SAMPLES en
dc.subject Quartz en
dc.subject Dating en
dc.subject SIGNALS en
dc.subject SLOW COMPONENT en
dc.subject STABILITY en
dc.subject Recuperated OSL en
dc.subject RED-TL en
dc.title Characteristics of thermally transferred optically stimulated luminescence (TT-OSL) in quartz and its potential for dating sediments en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.radmeas.2008.02.018
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Quaternary Environmental Change Group en
dc.description.status Peer reviewed en


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