Journal article
Further investigations into pulsed optically stimulated luminescence from feldspars using blue and green light
Radiation Physics, Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Oklahoma State University4
Aarhus University5
The purpose of this paper is to investigate characteristics of luminescence signals resulting from pulsed optical stimulation of feldspars and thereby to understand the underlying processes giving rise to the signal. Fourteen different feldspar specimens were investigated using time-resolved optically stimulated luminescence (TR-OSL), and these signals can be mathematically described as a sum of 4 exponential components (a, b, c, d).
The slowest component, d, increases with the duration of the light pulse as expected from the exponential model. The stimulation temperature dependence experiment suggests that the TR-OSL signal decay is governed by the recombination process and not by the excited state lifetime. Furthermore data from the TR-OSL signal dependence on stimulation time and preheat temperature suggest that the recombination process may not be a sum of exponentials, although the model cannot be rejected definitively.
Language: | English |
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Year: | 2009 |
Pages: | 576-581 |
Proceedings: | 12th International Conference on Luminescence and Electron Spin Resonance Dating |
ISSN: | 18790925 and 13504487 |
Types: | Journal article |
DOI: | 10.1016/j.radmeas.2009.02.017 |
ORCIDs: | Ankjærgaard, Christina , Jain, Mayank and 0000-0001-5559-1862 |
Feldspar Lifetime Mineral specimen TR-OSL Time-resolved luminescence