Title: Filament Chemistry of Uranium in Thermal Ionisation Mass Spectrometry
Authors: KRAIEM MONIAMAYER KlausGOUDER ThomasSEIBERT ALICEWISS ThierryHIERNAUT Jean-Pol
Citation: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY vol. 25 p. 1148-1144
Publisher: ROYAL SOC CHEMISTRY
Publication Year: 2010
JRC N°: JRC58099
ISSN: 0267-9477
URI: http://www.rsc.org/ej/JA/2010/c003745a.pdf
http://publications.jrc.ec.europa.eu/repository/handle/JRC58099
DOI: 10.1039/c003745a
Type: Articles in Journals
Abstract: In this work, the filament chemistry of uranium was investigated under conditions encountered in thermal ionisation mass spectrometry (TIMS), using a rhenium filament material without the addition of ionisation enhancers. The investigations were conducted using several analytical techniques such as X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and the modified-Knudsen Cell Mass Spectrometry (KCMS). The techniques provide useful information on the mechanisms associated with uranium evaporation and ionisation using a rhenium filament as surface ionisation source. The experimental results showed the sample behaviour to be consistent with the existence of a typical UO2 phase forming on the filament surface. The composition of the resulting vapour phase is dominated by the presence of uranium oxide species, with a smaller fraction of uranium ions.
JRC Institute:Institute for Transuranium Elements

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