Competing Kinetics and He Bubble Morphology in W
Journal Article
·
· Physical Review Letters
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
We found that the growth process of He bubbles in W is investigated using molecular dynamics and parallel replica dynamics for growth rates spanning 6 orders of magnitude. Fast and slow growth regimes are defined relative to typical diffusion hopping times of W interstitials around the He bubble. Moreover, slow growth rates allow the diffusion of interstitials around the bubble, favoring the biased growth of the bubble towards the surface. In contrast, at fast growth rates interstitials do not have time to diffuse around the bubble, leading to a more isotropic growth and increasing the surface damage.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725; AC52-O6NA25396
- OSTI ID:
- 1236571
- Alternate ID(s):
- OSTI ID: 1181551
- Report Number(s):
- LA-UR-14-26542; PRLTAO
- Journal Information:
- Physical Review Letters, Vol. 114, Issue 10; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 97 works
Citation information provided by
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