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Materialien/Werkstoffe Poster: Do., 13:00–15:30 D-P407
Micro focus X-ray diffraction on ion beam modified nuclear fuel
Nico Wieschalla 1,2 , Rainer Jungwirth 1,2 , Winfried Petry 1 , Thomas
Wroblewski 3
1 Technische Universität München, Forschungsneutronenquelle Heinz Maier-Leibnitz
(FRM II), Lichtenbergstr. 1, 85747 Garching – 2 Technische Universität München,
Physik Department, Institute E21, James-Franck-Strasse, 85748 Garching –
3 HASYLAB at DESY, Notkestr. 85, 22603 Hamburg
Irradiation damages caused by fission fragments in nuclear fuels can be simulated by
bombardment with heavy ions. At conditions close to in-pile irradiation (comparable
temperature and fission fragment density), it leads to a diffusion process in U-Mo/Al
dispersion fuels between the spherical U-Mo grains and the surrounding Al-matrix like
it takes places during in-pile irradiation [1]. The usage of high-density U-Mo/Al dispersion
fuel for high burn up in research and test reactors seems to be limited by this
unfavourable interdiffusion layer (IDL) [2,3]. Therefore it is of main interest to examine
the formation of different phases in this IDL by micro focus diffraction at intense
synchrotron sources. Detailed X-ray analysis of U1−xMox (x=0.06, 0.1) fuel dissolved
in an Al-Matrix will be presented.
[1] N. Wieschalla et al, Proceedings of the 27th International Meeting on RERTR,
Boston (USA) (2005)
[2] M. K. Meyer et al, Journal of Nuclear Materials 304, 221 (2002).
[3] F. Huet et al, Proceedings of the 25th International Meeting on RERTR, Chicago
(USA) (2003).