A comparison of quartz OSL and isothermal TL measurements on Chinese loess

Janpieter P. Buylaert; A. S. Murray; S. Huot; M. G.A. Vriend; D. Vandenberghe; F. De Corte; P. Van den haute

doi:10.1093/rpd/nci518

A comparison of quartz OSL and isothermal TL measurements on Chinese loess

Janpieter P. Buylaert, A. S. Murray, S. Huot, M. G.A. Vriend, D. Vandenberghe, F. De Corte, P. Van den haute

Research output: Contribution to journal › Article › peer-review

Abstract

The reliability of equivalent doses (D_e) from Chinese loess, measured using isothermal thermoluminescence (ITL) is tested. Dose calculations use the single-aliquot regenerative-dose (SAR) procedure. Despite good reproducibility of laboratory-induced signals and negligible response at zero dose, a significant overestimation of D_e is observed, compared with OSL measurements. Measurement of a known laboratory dose administered after optical bleaching, but before any heating, demonstrates that the first heating during measurement of the natural signal causes a significant sensitivity change, undetected by SAR. Using the single-aliquot regeneration and added (SARA) dose procedure, which allows for initial sensitivity change, good agreement with OSL is obtained after allowance is made for initial incomplete bleaching. It is concluded that SAR-ITL, in its present form, is not a suitable method for dating Chinese loess; it is very important to undertake a dose recovery test before any TL procedure is used to date sediments.

Original language	English (US)
Pages (from-to)	474-478
Number of pages	5
Journal	Radiation Protection Dosimetry
Volume	119
Issue number	1-4
DOIs	https://doi.org/10.1093/rpd/nci518
State	Published - Sep 15 2006
Externally published	Yes

ASJC Scopus subject areas

Radiation
Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

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10.1093/rpd/nci518

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title = "A comparison of quartz OSL and isothermal TL measurements on Chinese loess",

abstract = "The reliability of equivalent doses (De) from Chinese loess, measured using isothermal thermoluminescence (ITL) is tested. Dose calculations use the single-aliquot regenerative-dose (SAR) procedure. Despite good reproducibility of laboratory-induced signals and negligible response at zero dose, a significant overestimation of De is observed, compared with OSL measurements. Measurement of a known laboratory dose administered after optical bleaching, but before any heating, demonstrates that the first heating during measurement of the natural signal causes a significant sensitivity change, undetected by SAR. Using the single-aliquot regeneration and added (SARA) dose procedure, which allows for initial sensitivity change, good agreement with OSL is obtained after allowance is made for initial incomplete bleaching. It is concluded that SAR-ITL, in its present form, is not a suitable method for dating Chinese loess; it is very important to undertake a dose recovery test before any TL procedure is used to date sediments.",

author = "Buylaert, {Janpieter P.} and Murray, {A. S.} and S. Huot and Vriend, {M. G.A.} and D. Vandenberghe and {De Corte}, F. and {Van den haute}, P.",

note = "Funding Information: The technical assistance of Jochem Temmerman is highly appreciated. This research is financed by a Ph.D. grant of the Institute for the Promotion of Innovation through Science and Technology in Flanders (IWT-Vlaanderen, J. P. B.) and the Fund for Scientific Research, Flanders (F. D. C.). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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AU - Buylaert, Janpieter P.

AU - Murray, A. S.

AU - Huot, S.

AU - Vriend, M. G.A.

AU - Vandenberghe, D.

AU - De Corte, F.

AU - Van den haute, P.

N1 - Funding Information: The technical assistance of Jochem Temmerman is highly appreciated. This research is financed by a Ph.D. grant of the Institute for the Promotion of Innovation through Science and Technology in Flanders (IWT-Vlaanderen, J. P. B.) and the Fund for Scientific Research, Flanders (F. D. C.). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2006/9/15

Y1 - 2006/9/15

N2 - The reliability of equivalent doses (De) from Chinese loess, measured using isothermal thermoluminescence (ITL) is tested. Dose calculations use the single-aliquot regenerative-dose (SAR) procedure. Despite good reproducibility of laboratory-induced signals and negligible response at zero dose, a significant overestimation of De is observed, compared with OSL measurements. Measurement of a known laboratory dose administered after optical bleaching, but before any heating, demonstrates that the first heating during measurement of the natural signal causes a significant sensitivity change, undetected by SAR. Using the single-aliquot regeneration and added (SARA) dose procedure, which allows for initial sensitivity change, good agreement with OSL is obtained after allowance is made for initial incomplete bleaching. It is concluded that SAR-ITL, in its present form, is not a suitable method for dating Chinese loess; it is very important to undertake a dose recovery test before any TL procedure is used to date sediments.

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A comparison of quartz OSL and isothermal TL measurements on Chinese loess

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