Further investigations into pulsed optically stimulated luminescence from feldspars using blue and green light

Christina Ankjærgaard, Mayank Jain, R. Kalchgruber, Torben Lapp, D. Klein, S.W.S. McKeever, A.S. Murray, P. Morthekai

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    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.
    Original languageEnglish
    JournalRadiation Measurements
    Volume44
    Issue number5-6
    Pages (from-to)576-581
    ISSN1350-4487
    DOIs
    Publication statusPublished - 2009
    Event12th International Conference on Luminescence and Electron Spin Resonance Dating - Beijing, China
    Duration: 18 Sep 200822 Sep 2008

    Conference

    Conference12th International Conference on Luminescence and Electron Spin Resonance Dating
    CountryChina
    CityBeijing
    Period18/09/200822/09/2008

    Keywords

    • Radiation physics
    • Nuclear technologies

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