Title: Evaluation of the Uncertainties of Uranium Isotope Ratio Measurements Carrried out by TIMS Using the Traditional and the Total Evaporation Methods
Authors: PEREIRA DE OLIVEIRA JR. OlivioDE BOLLE WillyRICHTER STEPHANALONSO MUNOZ ADOLFOKUHN HeinzSARKIS J.e.s.WELLUM Roger
Citation: INTERNATIONAL JOURNAL OF MASS SPECTROMETRY vol. 246 p. 35-42
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2005
JRC N°: JRC30994
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30994
Type: Articles in Journals
Abstract: The uncertainties of uranium isotope ratio measurements (n(235U)/n(238U)) carried out by thermal ionization mass spectrometry using the traditional and the total evaporation methods were evaluated according to the recommendations of the ISO Guide to the expression of Uncertainty in Measurement. A set of representative samples with enrichment samples with enrichment levels ranging from 0.5 to 2.0 wt% of 235U was used for this purpose. The uncertainty values experimentally obtained were then compared to the requirements of the IAEA International Target Values for measurement Uncertainties in Safeguarding Nuclear Materials.
JRC Institute:Institute for Reference Materials and Measurements

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