Detection of far-red IRSL from loess

Authors

  • Z. P. Lai Oxford Luminescence Research Group, School of Geography and the Environment, University of Oxford
  • L. Arnold Oxford Luminescence Research Group, School of Geography and the Environment, University of Oxford
  • S. Stokes Oxford Luminescence Research Group, School of Geography and the Environment, University of Oxford
  • R. Bailey Oxford Luminescence Research Group, School of Geography and the Environment, University of Oxford
  • M. Fattahi Oxford Luminescence Research Group, School of Geography and the Environment, University of Oxford

DOI:

https://doi.org/10.26034/la.atl.2002.346

Abstract

It has recently been proposed that it may be possible to extend the age range of luminescence dating of loess using the far-red (λ=665-740nm) emission from feldspar, as it is thought not to exhibit anomalous fading. Studies on red luminescence have been hindered due to technical difficulties in suppression of background and other factors. Recently modifications to apparatus (esp. photo-multiplier plus filter combinations) have been reported demonstrating that red IRSL (λ=590-700nm) may be observed from coarse-grained feldspar (Fattahi and Stokes, 2002a). However, this modified system was not able to detect far-red IRSL (λ=665-740nm) from old (>800ka) Chinese loess. In this short note we describe further modifications to the system which have successfully enhanced the far-red IRSL signal, and at the same time reduced background signal levels. As a result, routine measurements of far-red IRSL from loess are possible.

Downloads

Published

2002-11-15

How to Cite

Lai, Z. P., Arnold, L., Stokes, S., Bailey, R., & Fattahi, M. (2002). Detection of far-red IRSL from loess. Ancient TL, 20(2), 41–46. https://doi.org/10.26034/la.atl.2002.346

Issue

Vol. 20 No. 2 (2002)

Section

Contributions

License

Copyright (c) 2002 Z. P. Lai, L. Arnold, S. Stokes, R. Bailey, M. Fattahi

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.