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|Title:||Fission product release and microstructure changes of irradiated MOX fuel at high temperatures|
|Authors:||HIERNAUT JEAN-POL; WISS Thierry; COLLE Jean-Yves; BENES ONDREJ; THIELE Hartmut; PAPAIOANNOU Dimitrios; RONDINELLA Vincenzo; SASAHARA Akihiro; SONODA T.; KONINGS Rudy|
|Citation:||JOURNAL OF NUCLEAR MATERIALS vol. 442 no. 1-3 p. 330-340|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||Samples of irradiated MOX of 44 GWd/tHM mean burn-up were prepared by core drilling at three different radial positions of a fuel pellet. They were subsequently heated in a Knudsen effusion mass spectrometry system up to complete vaporization of the sample (~2600 K) and the release of fission gas (krypton and xenon) and helium was measured. Scanning electron microscopy was used in parallel to investigate the evolution of the microstructure of a sample heated in the same condition up to given key temperatures as determined from the gas release profiles. A clear difference for fission gas release and microstructure was observed as a function of the radial position of the samples and therefore of irradiation temperature. A good correlation between the microstructure evolution and the gas release could be established as a function of the temperature of irradiation and (laboratory) heating.|
|JRC Directorate:||Nuclear Safety and Security|
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