期刊
RADIATION MEASUREMENTS
卷 45, 期 7, 页码 768-777出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2010.03.009
关键词
OSL; Quartz; TT-OSL; Recuperation; Kinetic parameters
资金
- Marie-Curie Transfer of Knowledge project ATIS [MTDK-CT-2005-029642]
Thermally-transferred optically stimulated luminescence (TT-OSL) extends the age range of OSL dating using quartz. A set of experiments have been undertaken to determine the kinetic parameters of the TT-OSL source traps, and this information has been used to propose an improved TT-OSL single aliquot regenerative (SAR) dose protocol. By combining together OSL and thermoluminescence (TL) measurements on fine-grained quartz, a correspondence between TL peaks and the TT-OSL signal is found. The thermal stability of the main TT-OSL trap was estimated by applying Hoogenstraaten's method and allowing for thermal quenching: this predicts a lifetime of 4.5 Ma at 10 degrees C. A set of experiments were undertaken to refine the treatment needed at the end of each SAR cycle to erase the previously acquired TT-OSL signal. An improved TT-OSL SAR protocol using this treatment is proposed, and it is tested on quartz from a young Holocene sample. These tests yielded excellent recycling ratios and excellent dose recovery. (C) 2010 Elsevier Ltd. All rights reserved.
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