Title: Experimental Determination of the 233U Half-Life
Authors: POMME StefaanALTZITZOGLOU TimotheosVAN AMMEL RafSIBBENS GoedeleEYKENS RogerRICHTER StephanCAMPS JohanKOSSERT KarstenJANSSEN HerbertGARCIA-TORANO EduardoDURAN TeresaJAUBERT Florent
Citation: METROLOGIA vol. 46 no. 5 p. 439-449
Publisher: IOP PUBLISHING LTD
Publication Year: 2009
JRC N°: JRC51190
ISSN: 0026-1394
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC51190
DOI: 10.1088/0026-1394/46/5/007
Type: Articles in Journals
Abstract: The half-life of 233U was determined by a specific activity method. A purified, highly enriched 233U solution was prepared with certified concentration of uranium isotopes. The isotopic composition of the uranium material was determined by thermal ionisation mass spectrometry. The ingrowth of daughter nuclides was calculated and confirmed by alpha and gamma-ray spectrometry. Quantitative sources were prepared from aliquots of the 233U solution and their disintegration rate was determined by means of alpha-particle counting at a defined small solid angle, liquid scintillation counting and 4pi counting in a pressurised proportional counter and in a CsI(Tl) sandwich spectrometer. A half-life value of 1.5867 (14) 10 5 a was obtained, in which the relative standard uncertainty amounts to 0.09%. The result is lower than the currently recommended value.
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.