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Loop-punching suppression induced by growth of helium bubble pair in tungsten.
- Source :
- Journal of Applied Physics; 2018, Vol. 124 Issue 23, pN.PAG-N.PAG, 6p, 5 Diagrams, 2 Graphs
- Publication Year :
- 2018
-
Abstract
- Molecular dynamics and transmission electron microscopy are employed to study the formation and evolution of interstitial dislocation loops due to nearby growing helium bubbles. The study reveals a novel mechanism that suppresses further formation of loops. Mass transport of self-interstitial atoms between the bubbles is observed, followed by the loop formation, resulting in a loop-bubble complex in which the Burgers vector may rotate between <100> and 1/2 <111>. Such a complex can absorb free loops, effectively influencing the evolution of loop number density. These results provide a new understanding of loop-bubble complex formation and saturation of the loop density under continuous helium implantation in materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 124
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 133705288
- Full Text :
- https://doi.org/10.1063/1.5053138