Title: Protocol for Uncertainty Assessment of Half-Lives
Authors: POMME STEFAANCAMPS JohanVAN AMMEL RAFPAEPEN JAN
Citation: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY vol. 276 no. 2 p. 335-339
Publisher: SPRINGER
Publication Year: 2008
JRC Publication N°: JRC45544
ISSN: 0236-5731
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC45544
DOI: 10.1007/s10967-007-0508-3
Type: Contributions to Conferences
Abstract: The apparent tendency to underestimate the uncertainty of experimentally determined half-life values of radionuclides is discussed. It is argued that the uncertainty derived from a least-squares analysis of a decay curve is prone to error. As it is quite common for a series of activity measurement results to be autocorrelated, the prerequisite of randomness of data for common statistical tests to apply is not fulfilled. In this work, an alternative data analysis method is applied that leads to a more realistic uncertainty budget. The uncertainty components are being subdivided in three categories according to the relative frequency at which they occur, an appropriate uncertainty propagation formula applied and then the total uncertainty obtained from an independent sum. An attempt is made to apply the protocol to problematic cases in literature, yet it is clear that the reporting is usually incomplete for a full uncertainty analysis. Suggestions are made for a concise but more complete reporting style, for the sake of traceability.
JRC Institute:Institute for Reference Materials and Measurements

Files in This Item:
There are no files associated with this item.


Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.