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Dislocations mediate hydrogen retention in tungsten

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D. Terentyev, V. Dubinko, A. Bakaev, Y. Zayachuk, W. Van Renterghem, P. Grigorev
Nuclear Fusion
54 (4), 042004
2014
A1

Abstract 

In this letter, a comprehensive mechanism for the nucleation and growth of bubbles on dislocations under plasma exposure of tungsten is proposed. The mechanism reconciles long-standing experimental observations of hydrogen isotopes retention, essentially defined by material microstructure, and so far not fully explained. Hence, this work provides an important link to unify material's modelling with experimental assessment of W and W-based alloys as candidates for plasma facing components.

DOI 

http://dx.doi.org/10.1088/0029-5515/54/4/042004

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PDF icon 14_NuclFusion_54,042004_Terentyev.pdf

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