Choice of the most appropriate thermal treatment in optical dating of quartz

S. H. Li*, M. Y. Tso, K. E. Westaway, G. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A method of identifying the most appropriate thermal annealing or preheating treatment for optical dating of quartz is proposed. The procedures can also be used in equivalent dose determination using single and multiple aliquot techniques. It is found that optically stimulated luminescence (OSL) from quartz can be either increased or decreased after preheating. An increase in OSL signal is attributed to thermal charge transfer from non-OSL traps into OSL traps or change in OSL sensitivity. This enhancement is dependent on preheating time and temperature. The decay of the OSL signal by heating is mainly from a single type of OSL trap. Implications for quartz optical dating are discussed.

Original languageEnglish
Pages (from-to)495-498
Number of pages4
JournalRadiation Protection Dosimetry
Volume84
Issue number1-4
Publication statusPublished - 1999
Externally publishedYes

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