A multi-laboratory testing of calibration methods for environmental dose rate meters

L. Bøtter-Jensen, Sven Poul Nielsen

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    Calibration experiments were carried out at Risø National Laboratory 28-30 August 1985 with the aim of testing calibration methods for instruments used for background gamma radiation monitoring. Two calibration methods using certified gamma sources were tested: 1) A shadow-shield calibration method, and 2) A freefield calibration set-up. The experiments comprised studies of 25 instruments from 11 European laboratories. For most of the instruments the two methods gave identical results. The shadow-shield calibration, however, proved to be more accurate. Additional measurements of the natural background and the cosmic component gave useful information on the energy dependency of the detectors. The calibration experiments were sponsored by CBC under contract No. 1244/1/84.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages54
    ISBN (Print)87-550-1174-8
    Publication statusPublished - 1985


    • Risø-M-2542
    • Background radiation
    • Calibration
    • Dose ratemeters
    • Gamma radiation
    • Interlaboratory comparisons
    • Natural radioactivity
    • Radiation monitors
    • Testing


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