Investigation of the OSL signal from very deep traps in natural quartz
Part of : Mediterranean archaeology & archaeometry : international journal ; Vol.10, No.4, 2010, pages 93-98
Issue:
Pages:
93-98
Abstract:
It has been recently reported by several studies that a thermally transferred optically stimulated luminescence (TT‐OSL) signal from quartz grains can be used to extend the dating range for quartz samples. The TT‐OSL signals are believed to consist of a recuperated OSL (ReOSL) component and a basic‐transferred OSL (BT‐OSL) component. In the present work the TT‐OSL signals from several types of unfired quartz samples were studied. A special protocol was used, which allowed the measure the OSL from very deep traps (VDT) as a function of the OSL stimulation temperature. It was found that all quartz samples exhibit TT‐OSL signals, which are depended on sample and on the OSL stimulation temperature. The activation energy of the process was evaluated and the influences of the TT‐OSL on the ReOSL dating protocol are discussed.
Subject:
Subject (LC):
Keywords:
Quartz, Deep traps, TT‐OSL
Notes:
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