Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescence

Authors Organisations
Type Article
Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalRadiation Measurements
Volume120
Early online date23 Feb 2018
DOI
Publication statusPublished - 15 Dec 2018
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Abstract

Basic assumptions of the single aliquot regenerative dose (SAR) protocol are tested using the violet stimulated luminescence (VSL) signal from quartz. The VSL signal is shown to be reduced to a sufficiently low background level between SAR steps, and the SAR protocol appears to adequately correct for sensitivity changes during measurement. The VSL SAR protocol can recover a large (405 Gy) laboratory beta dose within uncertainties, however the mean value for the dose recovery ratio is commonly 0.8 or less. This poor behaviour is echoed in the measurements of equivalent dose (De) for a sample with an expected De of ∼354 Gy, which underestimates De by 50–70%. Further investigations are required to understand the mechanisms underlying these underestimations in VSL SAR De values

Keywords

  • violet stimulated luminescence (VSL), dose recovery, quartz, SAR protocol, sensitivity change