The response of thermoluminescence dosimeters to monoenergetic photons of energies between 15 keV and 100 keV

P. Christensen, L. Bøtter-Jensen, B. Majborn

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    Abstract

    Experimental photon energy response curves using monochromatic X-ray sources for the exposures are presented for standard thermoluminescent dosimeters applied in the personnel and environmental monitoring programmes at Risø. The investigatio n included dosimeters of LiF, Li2B4O7:Mn, CaF2:Mn,CaF2:Dy and CaSO4:Dy. Good agreement between experimental and calculated data has been obtained for small-size (30 milligrams) dosimeters whereas dosimeters of greater masses showed an increase in the response which is ascribed to scattered radiation. Compared to data earlier obtained from the personnel badge using filtered X-rays a decrease of the response of the order of 10-20$ was observed for exposures from monochromatic X-rays. The increase of the response of the personnel badge when attached to a phantom and due to scattering from the phantom materia l amounted to up to 50%.
    Original languageEnglish
    Place of PublicationRoskilde, Denmark
    PublisherRisø National Laboratory
    Number of pages17
    ISBN (Print)87-550-0330-3
    Publication statusPublished - 1975
    SeriesRisø-M
    Number1787
    ISSN0418-6435

    Keywords

    • Risø-M-1787
    • Borates
    • Calcium fluorides
    • Calcium sulfates
    • Dose-response relationships
    • Doped materials
    • Energy dependence
    • Environment
    • Kev Range 10-100
    • Lithium compounds
    • Lithium fluorides
    • Personnel monitoring
    • Photons
    • Radiation monitoring

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