Filament Chemistry of Uranium in Thermal Ionisation Mass Spectrometry
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.
KRAIEM Monia;
MAYER Klaus;
GOUDER Thomas;
SEIBERT Alice;
WISS Thierry;
HIERNAUT Jean-Pol;
2010-07-29
ROYAL SOC CHEMISTRY
JRC58099
0267-9477,
http://www.rsc.org/ej/JA/2010/c003745a.pdf,
https://publications.jrc.ec.europa.eu/repository/handle/JRC58099,
10.1039/c003745a,
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