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 journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)474-478
Number of pages5
JournalRadiation Protection Dosimetry
Issue number1-4
StatePublished - Sep 15 2006
Externally publishedYes

ASJC Scopus subject areas

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


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