Title: High-resolution alpha-particle spectrometry of 238U
Authors: POMME StefaanGARCIA-TORANO EduardoMAROULI MARIACRESPO T.JOBBAGY VIKTORVAN AMMEL RafPAEPEN JanSTROH HEIKO
Citation: APPLIED RADIATION AND ISOTOPES vol. 87 p. 315-319
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2014
JRC N°: JRC82745
ISSN: 0969-8043
URI: http://dx.doi.org/10.1016/j.apradiso.2013.11.075
http://publications.jrc.ec.europa.eu/repository/handle/JRC82745
DOI: 10.1016/j.apradiso.2013.11.075
Type: Articles in periodicals and books
Abstract: The alpha-particle emission probabilities associated with the three main alpha transitions of 238U were measured by high-resolution alpha-particle spectrometry. Highly enriched 238U material was used and its isotopic composition characterised by mass spectrometry. Source production through electrodeposition was optimised to reconcile conflicting demands for good spectral resolution and statistical precision. Measurements were performed at IRMM and CIEMATfor 1-2 years in three different set-ups. A new magnet system was put into use to largely eliminate true coincidence effects with low-energy conversion electrons. Finally the accuracy and precision of the relative emission probabilities for the three transitions – 77.01 (10)%, 22.92 (10)% and 0.068 (10)%, respectively – have been improved significantly.
JRC Directorate:Health, Consumers and Reference Materials

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