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Browsing by Author "Simpson, BRS"

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Preparation of solid water-equivalent radioactive standards

Author: Morris, WM ; Simpson, BRS Date: Feb 2004 Radioactive water standards prepared in Marinelli beakers can pose a problem due to potential leakage that can both compromise the standard and present a safety hazard. These difficulties can be circumvented by solidifying the standard such ... Read more
Radioactivity standardization in South Africa

Author: Simpson, BRS Date: Jan 2002 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 are undertaken ... Read more
Simple counting technique for measuring mixtures of two pure beta-emitting radionuclides

Author: Van Wyngaardt, WM ; Simpson, BRS Date: 01 Aug 2006 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 solutions, namely ... Read more
Standardization of P-33 by the TDCR efficiency calculation technique

Author: Simpson, BRS ; Morris, WM Date: Feb 2004 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 have been standardized ... Read more

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Browsing by Author "Simpson, BRS"

Browsing by Author "Simpson, BRS"

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