A New Method for Processing Airborne Gamma Ray Spectrometry Data for Mapping Low Level Contaminations

Helle Karina Aage, Uffe C C Korsbech, Kim Bargholz, Jens Hovgaard

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A new technique for processing airborne gamma ray spectrometry data has been developed. It is based on the noise adjusted singular value decomposition method introduced by Hovgaard in 1997. The new technique opens for mapping of very low contamination levels. It is tested with data from Latvia where the remaining contamination from the 1986 Chernobyl accident together with fallout from the atmospheric nuclear weapon tests includes Cs-137 at levels often well below 1 kBq/m(2) equivalent surface contamination. The limiting factors for obtaining reliable results are radon in the air, spectrum stability and accurate altitude measurements. (C) 1999 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalApplied Radiation and Isotopes
    Volume51
    Issue number6
    Pages (from-to)651-662
    ISSN0969-8043
    DOIs
    Publication statusPublished - 1999

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