Real-time gamma dosimetry using PMMA optical fibres for applications in the sterilization industry

S. O'Keeffe, Alberto Fernandez Fernandez, Colin Fitzpatrick, B. Brichard, E. Lewis

    Research outputpeer-review


    The use of polymethylmethacrylate (PMMA)-based plastic optical fibre as an intrinsic real-time gamma dosimeter is investigated. The radiation-induced attenuation of the fibres is monitored in situ during the course of irradiation. The PMMA fibre exhibited a linear radiation- induced attenuation response at various wavelengths for a dose range of 50 Gy to 50 kGy. The sensitivity, ranging from 0.4 dBm-1 kGy-1 to 0.03 dBm-1 kGy-1, is wavelength dependent, with high sensitivity at the lower wavelengths.

    Original languageEnglish
    Pages (from-to)3171-3176
    Number of pages6
    JournalMeasurement Science and Technology
    Issue number10
    StatePublished - 1 Oct 2007

    ASJC Scopus subject areas

    • Instrumentation
    • Engineering (miscellaneous)
    • Applied Mathematics

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