Charge movement in grains of quartz studied using exo-electron emission

Christina Ankjærgaard, Phil M. Denby, A.S. Murray, Mayank Jain

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A flow-through Geiger-Muller pancake electron detector attachment has been fitted to the Riso TL/OSL reader, enabling optically stimulated electrons (OSE) to be measured simultaneously with optically stimulated luminescence (OSL). This detector has been used to provide new insights into charge movement in luminescence phosphors. Here we show that OSE from natural quartz grains gives an easily detectable, reproducible and light sensitive signal, although it is not as intense as OSL. A single sample of natural quartz grains extracted from a sediment is used to investigate the thermal stability and dependence on stimulation temperature of the OSE and OSL signals. The response to dose of these signals is also investigated, and conclusions drawn on the movement of electrons in this natural phosphor. (C) 2007 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    JournalRadiation Measurements
    Volume43
    Issue number2-6
    Pages (from-to)273-277
    ISSN1350-4487
    DOIs
    Publication statusPublished - 2008
    EventSolid State Dosimetry Conference - Delft, Netherlands
    Duration: 8 Jul 200713 Jul 2007
    Conference number: 15

    Conference

    ConferenceSolid State Dosimetry Conference
    Number15
    CountryNetherlands
    CityDelft
    Period08/07/200713/07/2007

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