Please use this identifier to cite or link to this item:
|Title:||Thermodynamic Study of Actinides and Lanthanides During Total Vaporisation of a Very High Burn-up UO2 Fuel|
|Authors:||HIERNAUT Jean-Pol; GOTCU Petronela; COLLE Jean-Yves; KONINGS Rudy|
|Citation:||JOURNAL OF NUCLEAR MATERIALS vol. 378 p. 349-357|
|Publisher:||ELSEVIER SCIENCE BV|
|JRC Publication N°:||JRC50346|
|Type:||Articles in Journals|
|Abstract:||A commercial PWR fuel sample of local burn-up of about 200 GWd/t was annealed in a Knudsen Cell Mass Spectrometer system (KCMS) with a temperature rate of 10 K/min up to 2750 K at which temperature the sample was completely vaporised. At high temperature the vapour above the sample contains mainly actinide and lanthanide oxides, the vapour pressure of refractory metals remaining below the detection limit. The local isotopic composition was determined by mass spectrometry and indicated a high content in higher actinides. From comparison of the partial vapour pressure with data for the pure oxides, obtained from experiments or literature, it is demonstrated that the actinide and lanthanide oxides dissolved in UO2 matrix obey Henry¿s law.|
|JRC Institute:||Institute for Transuranium Elements|
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.