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Microstructural modifications in ion-irradiated nuclear materials: characteristic features of fluorite-structured oxides

Published online by Cambridge University Press:  01 February 2011

Aurelien Debelle ,
Frederico Garrido  and
Lionel Thome
Aurelien Debelle
Affiliation:
aurelien.debelle@csnsm.in2p3.fr, University Paris-Sud 11, CSNSM-CNRS-IN2P3, Orsay, France
Frederico Garrido
Affiliation:
garrido@csnsm.in2p3.fr, University Paris-Sud 11, CSNSM-CNRS-IN2P3, Orsay, France
Lionel Thome
Affiliation:
thome@csnsm.in2p3.fr, University Paris-Sud 11, CSNSM-CNRS-IN2P3, Orsay, France
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Abstract

The behavior of two nuclear materials, namely cubic zirconia and urania, is investigated under different irradiation conditions in the low and medium ion energy range (tens of keV to a few MeV). In each case, these materials display a multi-step damage build-up, as revealed by both RBS/C and XRD measurements. It is demonstrated that each step exhibits characteristic features such as damage fraction, elastic strain, nature of defects, and thus presents a specific microstructure. The transition from one step to the following involves radiation defect re-organization which arises to lower the energy of the system.

Keywords

radiation effectsnuclear materialsx-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA08-07-BB07-07
Copyright
Copyright © Materials Research Society 2010

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References

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