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Radiation Effects in Murataite Ceramics

Published online by Cambridge University Press:  01 February 2011

J. Lian ,
L. M. Wang ,
R. C. Ewing ,
S. V. Yudintsev  and
S. V. Stefanovsky
J. Lian
Affiliation:
Dept. of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA
L. M. Wang
Affiliation:
Dept. of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA
R. C. Ewing
Affiliation:
Dept. of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA
S. V. Yudintsev
Affiliation:
Institute of Geology of Ore Deposits RAS, Staromonetnii per. 35, Moscow 109017, RUSSIA
S. V. Stefanovsky
Affiliation:
SIA Radon, 7th Rostovskii per. 2/14, Moscow 119121, RUSSIA
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Abstract

Synthetic murataite, an isometric, derivative of the fluorite-structure, has been proposed as a potential host phase for the immobilization of rare earth elements (REE) and actinides. A 1 MeV Kr+ ion irradiation has been performed on synthetic murataite ceramics in the system Ca-Ti-U-Mn-Al-Zr-Ce-O for different structural multiples of the fluorite unit cell. The temperature dependence of the amorphization dose has been determined. A higher critical temperature was obtained for the disordered murataite as compared to that of murataite superstructures, suggesting that murataite becomes more “resistant” to ion beam-induced damage with increasing degrees of structural disorder.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 225
Copyright
Copyright © Materials Research Society 2004

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References

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