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Browsing by Author "Simpson, BRS"

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  • Simpson, BRS (Pergamon-Elsevier Science Ltd, 2002-01)
    South Africa's national radioactivity measurement standard is maintained at a satellite laboratory in Cape Town by the National Metrology Laboratory (NML) of the Council-for Scientific and Industrial Research. Standardizations ...
  • Van Wyngaardt, WM; Simpson, BRS (Elsevier Science BV, 2006-08-01)
    A simple counting technique to measure mixtures of two pure beta-emitting radionuclides is described. The method is based on elements of two liquid scintillation techniques that are widely used to measure single-radionuclide ...
  • Simpson, BRS; Morris, WM (Pergamon-Elsevier Science Ltd, 2004-02)
    The activity of the pure beta-emitter phosphorus-33 (P-33) has been directly determined by the triple-to-double coincidence ratio (TDCR) efficiency calculation technique, thus extending the number of radionuclides that ...