Optically stimulated luminescence from quartz measured using the linear modulation technique

E. Bulur, L. Bøtter-Jensen, A.S. Murray

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    The optically stimulated luminescence (OSL) from heated natural quartz has been investigated using the linear modulation technique (LMT), in which the excitation light intensity is increased linearly during stimulation. In contrast to conventional stimulation, which usually produces a monotonically decreasing signal, linearly increasing the stimulation power gives peaks in the signal as a function of time. In cases where the OSL signal contains more than one component, the linear increase in power of the stimulation light may result in a curve containing overlapping peaks, where the most easily stimulated component occurs at a shorter time. This allows the separation of the overlapping OSL components, which are assumed to originate from different traps. The LM-OSL curve from quartz shows an initial peak Followed by a broad one. Deconvolution using curve fitting has shown that the composite OSL curve from quartz can be approximated well by using a linear combination of first-order peaks. In addition to the three known components, i.e. fast, medium and slow components from continuous-wave-OSL studies, an additional slow component is also identified for the first time. The dose responses and thermal stabilities of the various components are also studied. (C) 2000 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalRadiation Measurements
    Volume32
    Issue number5-6
    Pages (from-to)407-411
    ISSN1350-4487
    DOIs
    Publication statusPublished - 2000
    Event9th International Conference on Luminescence and Electron Spin Resonance Dating - Rome, Italy
    Duration: 6 Sep 199910 Sep 1999
    Conference number: 9

    Conference

    Conference9th International Conference on Luminescence and Electron Spin Resonance Dating
    Number9
    CountryItaly
    CityRome
    Period06/09/199910/09/1999

    Keywords

    • Optically stimulated luminescence
    • OSC
    • Luminescence dating
    • Quartz
    • LM-OSL

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