Uncertainties and characteristic limits of counting and spectrometric dosimetry systems.

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  • Author(s): Röttger A;Röttger A; Kessler P; Kessler P
  • Source:
    Journal of environmental radioactivity [J Environ Radioact] 2019 Sep; Vol. 205-206, pp. 48-54. Date of Electronic Publication: 2019 May 15.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 8508119 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1700 (Electronic) Linking ISSN: 0265931X NLM ISO Abbreviation: J Environ Radioact Subsets: MEDLINE
    • Publication Information:
      Original Publication: Barking, Essex : Elsevier Applied Science Publishers,
    • Subject Terms:
      Radiometry* ; Scintillation Counting* ; Spectrum Analysis*; Radiation Monitoring/*methods; Bromides/chemistry ; Cerium/chemistry ; Radiation Monitoring/instrumentation ; Uncertainty
    • Abstract:
      In the event of a radiological emergency, early and reliable knowledge of radioactivity concentrations is important information for organising countermeasures to protect the general public and emergency workers. This is ensured by all European countries in operating airborne radioactivity and dose rate early warning networks. To increase the provided information, the development of new secondary standards based on scintillation detectors for the measurement of ambient dose rate equivalent was initiated in 2014. This paper shows the state-of-the-art of uncertainties and characteristic limits of low dose rate measurement that can be achieved by scintillation-based detector (CeBr 3 ) and gas-based detectors (a high-pressure ionization chamber, HPIC). The comparison of the devices shows the performance and the metrological potential of the CeBr 3 detector: Its uncertainty is already very close to the uncertainty of reference values. Looking at the question how to select a reference instrument, the CeBr 3 detector with a special data evaluation is even superior to the HPIC and qualifies therefore as a modern secondary standard: Providing both, dose rate and nuclide information.
      (Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.)
    • Contributed Indexing:
      Keywords: Ambient dose rate; Environment; GUM; ISO 11929; Metrology
    • Accession Number:
      0 (Bromides)
      30K4522N6T (Cerium)
    • Publication Date:
      Date Created: 20190519 Date Completed: 20190618 Latest Revision: 20190618
    • Publication Date:
      20221213
    • Accession Number:
      10.1016/j.jenvrad.2019.04.012
    • Accession Number:
      31102905