Correlations between the activities of a gamma-ray emitter calculated from different peaks in the spectrum

A model for calculating correlations between the activities of the same gamma-ray emitter calculated from different peaks in its spectrum is presented. The correlation coefficients can be expressed by the relative uncertainties of the input quantities. The use of this model in the calculation of the...

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Bibliographic Details
Published in:Accreditation and quality assurance 2004-07, Vol.9 (8), p.473-477
Main Authors: GLAVIC-CINDRO, Denis, KORUN, Matjaz, VODENIK, Branko
Format: Article
Language:English
Subjects:
Analytical chemistry
Calibration
Chemistry
Correlation coefficients
Efficiency
Emitters
Energy
Exact sciences and technology
Gamma rays
Mathematical models
Probability
Radiochemical methods
Sensors
Uncertainty
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Summary:A model for calculating correlations between the activities of the same gamma-ray emitter calculated from different peaks in its spectrum is presented. The correlation coefficients can be expressed by the relative uncertainties of the input quantities. The use of this model in the calculation of the mean activity prevents the calculation of an excessively small uncertainty of the mean, since averaging of correlated uncertainty components is avoided.
ISSN:0949-1775
1432-0517
DOI:10.1007/s00769-004-0825-y