The Calibration of Portable and Airborne Gamma-Ray Spectrometers - Theory, Problems, and Facilities

Leif Løvborg

    Research output: Book/ReportReportResearchpeer-review

    387 Downloads (Pure)

    Abstract

    A gamma-ray spectrometer for use in geological exploration possesses four stripping ratios and three window sensitivities which must be deter-mined to make the instrumentation applicable for field assay or airborre measurement of potassium uranium, and thorium contents in the ground. Survey organizations in many parts of the world perform the instrument calibration using large pads of concrete which simulate a plane ground of known radioelement concentration. Calibration and monitoring trials with twelve facilities in ten countries prove that moisture absorption, radon exhalation, and particle-size effects can offset a radiometric grade assigned to concrete whose aggregate contains an embedded radioactive mineral. These and other calibration problems an discussed from a combined theoretical and practi cal viewpoint.
    Original languageEnglish
    Place of PublicationRoskilde, Denmark
    PublisherDanmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi
    Number of pages207
    ISBN (Print)87-550-1043-1
    Publication statusPublished - 1984

    Keywords

    • Risø-M-2456

    Fingerprint Dive into the research topics of 'The Calibration of Portable and Airborne Gamma-Ray Spectrometers - Theory, Problems, and Facilities'. Together they form a unique fingerprint.

    Cite this