Pre-implantation and pre-annealing effects on deuterium retention in tungsten

Ion-driven deuterium retention in polycrystalline tungsten has been studied by thermodesorption spectroscopy as a function of the pre-implantation and pre-annealing treatments. Two kinds of tungsten samples were implanted by deuterium ions: (i) as-received W and (ii) re-crystallized W. Higher deuter...

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Bibliographic Details
Published in:Journal of nuclear materials 2008-02, Vol.373 (1), p.254-258
Main Authors: Ogorodnikova, O.V., Roth, J., Mayer, M.
Format: Article
Language:English
Subjects:
Applied sciences
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Nuclear fuels
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Summary:Ion-driven deuterium retention in polycrystalline tungsten has been studied by thermodesorption spectroscopy as a function of the pre-implantation and pre-annealing treatments. Two kinds of tungsten samples were implanted by deuterium ions: (i) as-received W and (ii) re-crystallized W. Higher deuterium retention has been found for as-received W compared to re-crystallized. Pre-implantation by deuterium ions with intermediate TDS increases the deuterium retention. An increase of the deuterium retention with temperature at relatively high fluences was observed. The possible mechanisms of this behavior are discussed.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2007.06.003