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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1501

Title: Simple counting technique for measuring mixtures of two pure beta-emitting radionuclides
Authors: Van Wyngaardt, WM
Simpson, BRS
Keywords: Pure beta-emitting radionuclides
TDCR efficiency calculation
Triple-to-double coincidence ratio
Liquid scintillation counter
Nuclear sciences
Physics
Issue Date: 1-Aug-2006
Publisher: Elsevier Science BV
Citation: Van Wyngaardt, WM, and Simpson, BRS. 2006. A simple counting technique for measuring mixtures of two pure beta-emitting radionuclides. Nuclear Instruments & Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment, vol. 564(1), pp 339-346
Abstract: 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 the triple-to-double coincidence ratio (TDCR) efficiency calculation technique and the CIEMAT/NIST efficiency tracing method. Double- and triple-coincidence count rates, together with the figure-of-merit P determined from an external tracer, are used to extract the component activities of a source. A simulation was used to gauge the effect of counting statistics on the method's ability to extract a mixture composition under normal counting conditions and to validate derived uncertainty formulas based on counting statistics. The method is demonstrated experimentally for various mixture combinations of C-14 and Ni-63. It is shown that the accuracy of the technique can be enhanced by improving the determination of the figure-of-merit.
URI: http://hdl.handle.net/10204/1501
http://hdl.handle.net/10204/1501
ISSN: 0168-9002
Appears in Collections:Metrology
General science, engineering & technology

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