Radiation-induced growth and isothermal decay of infrared-stimulated luminescence from feldspar

Benny Guralnik*, Bo Li, Mayank Jain, Reuven Chen, Richard B. Paris, Andrew S. Murray, Sheng Hua Li, Vasilis Pagonis, Pierre G. Valla, Frédéric Herman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


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.

Original languageEnglish
Pages (from-to)224-231
Number of pages8
JournalRadiation Measurements
StatePublished - 1 Oct 2015


FundersFunder number
Swiss National FoundationPZ00P2-148191, 200021-127127
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung127127
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung


    • Feldspar IRSL
    • General order kinetics
    • MET-pIR
    • Multiexponential analysis


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