Journal
RADIATION MEASUREMENTS
Volume 81, Issue -, Pages 224-231Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2015.02.011
Keywords
Feldspar IRSL; MET-pIR; Multiexponential analysis; General order kinetics
Categories
Funding
- Swiss National Foundation [200021-127127, PZ00P2-148191]
- Swiss National Science Foundation (SNF) [PZ00P2_148191, 200021_127127] Funding Source: Swiss National Science Foundation (SNF)
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Optically stimulated luminescence (OSL) ages can determine a wide range of geological events or processes, such as the timing of sediment deposition, the exposure duration of a rock surface, or the cooling rate of bedrock. The accuracy of OSL dating critically depends on our capability to describe the growth and decay of laboratory-regenerated luminescence signals. Here we review a selection of common models describing the response of infrared stimulated luminescence (IRSL) of feldspar to constant radiation and temperature as administered in the laboratory. We use this opportunity to introduce a general-order kinetic model that successfully captures the behaviour of different materials and experimental conditions with a minimum of model parameters, and thus appears suitable for future application and validation in natural environments. Finally, we evaluate all the presented models by their ability to accurately describe a recently published feldspar multi-elevated temperature post-IR IRSL (MET-pIRIR) dataset, and highlight each model's strengths and shortfalls. (C) 2015 Elsevier Ltd. All rights reserved.
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