Extending the dose range: Probing deep traps in quartz with 3.06 eV photons

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    This article demonstrates that violet (405 nm) stimulated luminescence (VSL) signal from quartz contains contribution from deep traps that are otherwise not accessible with blue light (470 nm). Additionally, it also contains the typical fast and slow components observed with the blue light stimulation. Although, the fast OSL component is measured with similar efficiency by blue and violet lights, the slower OSL components (especially S3) are measured relatively more efficiently with the latter. New insight into the origins of quartz luminescence is presented through a comparison of violet and blue lights stimulation, and thermal stimulations. Finally, it is shown that the deep traps probed through violet light stimulation have potential for increasing the dose measurement/dating range using quartz. The post-blue VSL signal allows easy, precise measurement of dose up to at least 1 kGy in our samples, while the initial BSL signal shows saturation at 100 Gy. The violet stimulation provides a means for optically probing the traps that give rise to signals with extended growth (dose-response) characteristics such as high temperature isothermal TL (ITL), the slow component OSL, and perhaps also the thermally transferred-OSL (TT-OSL).
    Original languageEnglish
    JournalRadiation Measurements
    Volume44
    Issue number5-6
    Pages (from-to)445-452
    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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