Dual-beam irradiation of Delta a-iron: Heterogeneous bubble formation on dislocation loops

Dual-beam irradiation of Delta a-iron: Heterogeneous bubble formation on dislocation loops

In order to understand the evolution of materials under irradiation conditions similar to those in future fusion reactors, we have irradiated high purity iron in situ in a transmission electron microscope with 1 MeV Fe+ ions while simultaneously implanting 15 keV He+ ions, at 500 ?C. Once ~1 dpa/500...

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Bibliographic Details
Published in:Journal of nuclear materials Vol. 418; no. 1-3; pp. 313 - 315
Main Authors: Brimbal, Daniel, Decamps, Brigitte, Barbu, Alain, Meslin, Estelle, Henry, Jean
Format: Journal Article
Language:English
Published: 01-11-2011
Subjects:
Bubbles
Dislocation loops
Electron microscopes
Evolution
Fusion reactors
Helium
Iron
Irradiation
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Summary:In order to understand the evolution of materials under irradiation conditions similar to those in future fusion reactors, we have irradiated high purity iron in situ in a transmission electron microscope with 1 MeV Fe+ ions while simultaneously implanting 15 keV He+ ions, at 500 ?C. Once ~1 dpa/500 appm He were reached, helium bubbles and large dislocation loops were observed. The study reveals that helium bubbles nucleated heterogeneously: a majority of them were observed inside the large dislocation loops.
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ISSN:0022-3115
DOI:10.1016/j.jnucmat.2011.06.048