Title: The dissolution of helium in La-doped UO2 as a surrogate of hypo-stoichiometric UO2
Citation: Nuclear Materials and Energy vol. 3 - 4 p. 12-16
Publisher: Elsevier B.V.
Publication Year: 2015
JRC N°: JRC94661
ISSN: 2352-1791
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC94661
DOI: 10.1016/j.nme.2015.01.002
Type: Articles in periodicals and books
Abstract: In this work the dissolution of helium in La-doped UO2 samples was studied by helium infusion in an autoclave followed by thermal desorption (laser heating) coupled to mass spectrometer systems for the determination of helium release rate and the total helium quantity. Lanthanum was chosen as a dopant in UO2 to study the effect of hypo-stoichiometry on helium solubility together with the impurity effect. Comparison of the dissolved He quantity from the samples with different La content showed that the dissolved He quantity slightly increases with increasing oxygen vacancy concentration in the samples.
JRC Directorate:Nuclear Safety and Security

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