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Erschienen in:
2001 | OriginalPaper | Buchkapitel
Ageing Under Self-Irradiation: Influence on Positron Annihilation Characteristics in Plutonium-Hafnium Oxide Ceramics
verfasst von : L. F. Timofeeva, V. M. Filin, V. I. Bulkin
Erschienen in: Ageing Studies and Lifetime Extension of Materials
Verlag: Springer US
Enthalten in: Professional Book Archive
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Sintered samples of Pu oxides and their solid solution with Hf, Y and Ce have been studied by positron annihilation. The presence of several defect types has been defined. The influence of crystal lattice type on defect characteristics has been shown. It is also shown that the positron lifetime value in Pu oxide is 20 % more than in Hf oxide. The integral characteristics of the spectra (width of spectrum at half height) are changed during the process of self-irradiation; this is individual for every sample of ceramic.