Growth rate effects on the formation of dislocation loops around deep helium bubbles in Tungsten
Abstract
Here, the growth process of spherical helium bubbles located 6 nm below a (100) surface is studied using molecular dynamics and parallel replica dynamics simulations, over growth rates from 106 to 1012 helium atoms per second. Slower growth rates lead to a release of pressure and lower helium content as compared with fast growth cases. In addition, at slower growth rates, helium bubbles are not decorated by multiple dislocation loops, as these tend to merge or emit given sufficient time. At faster rates, dislocation loops nucleate faster than they can emit, leading to a more complicated dislocation structure around the bubble.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC). Advanced Scientific Computing Research (ASCR) (SC-21)
- OSTI Identifier:
- 1334150
- Report Number(s):
- LA-UR-16-21485
Journal ID: ISSN 1536-1055; TRN: US1700132
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fusion Science and Technology
- Additional Journal Information:
- Journal Volume: 71; Journal Issue: 1; Journal ID: ISSN 1536-1055
- Publisher:
- American Nuclear Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; Material Science; Magnetic Fusion Energy
Citation Formats
Sandoval, Luis, Perez, Danny, Uberuaga, Blas P., and Voter, Arthur Ford. Growth rate effects on the formation of dislocation loops around deep helium bubbles in Tungsten. United States: N. p., 2016.
Web. doi:10.13182/FST16-116.
Sandoval, Luis, Perez, Danny, Uberuaga, Blas P., & Voter, Arthur Ford. Growth rate effects on the formation of dislocation loops around deep helium bubbles in Tungsten. United States. https://doi.org/10.13182/FST16-116
Sandoval, Luis, Perez, Danny, Uberuaga, Blas P., and Voter, Arthur Ford. Tue .
"Growth rate effects on the formation of dislocation loops around deep helium bubbles in Tungsten". United States. https://doi.org/10.13182/FST16-116. https://www.osti.gov/servlets/purl/1334150.
@article{osti_1334150,
title = {Growth rate effects on the formation of dislocation loops around deep helium bubbles in Tungsten},
author = {Sandoval, Luis and Perez, Danny and Uberuaga, Blas P. and Voter, Arthur Ford},
abstractNote = {Here, the growth process of spherical helium bubbles located 6 nm below a (100) surface is studied using molecular dynamics and parallel replica dynamics simulations, over growth rates from 106 to 1012 helium atoms per second. Slower growth rates lead to a release of pressure and lower helium content as compared with fast growth cases. In addition, at slower growth rates, helium bubbles are not decorated by multiple dislocation loops, as these tend to merge or emit given sufficient time. At faster rates, dislocation loops nucleate faster than they can emit, leading to a more complicated dislocation structure around the bubble.},
doi = {10.13182/FST16-116},
journal = {Fusion Science and Technology},
number = 1,
volume = 71,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}
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Works referenced in this record:
A new interatomic potential function for helium
journal, January 1968
- Beck, D. E.
- Molecular Physics, Vol. 14, Issue 4
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool
journal, December 2009
- Stukowski, Alexander
- Modelling and Simulation in Materials Science and Engineering, Vol. 18, Issue 1
Formation of helium induced nanostructure ‘fuzz’ on various tungsten grades
journal, September 2010
- Baldwin, M. J.; Doerner, R. P.
- Journal of Nuclear Materials, Vol. 404, Issue 3
The parallel replica dynamics method – Coming of age
journal, April 2015
- Perez, Danny; Uberuaga, Blas P.; Voter, Arthur F.
- Computational Materials Science, Vol. 100
Helium bubble bursting in tungsten
journal, December 2013
- Sefta, Faiza; Juslin, Niklas; Wirth, Brian D.
- Journal of Applied Physics, Vol. 114, Issue 24
Modeling plasma facing materials for fusion power
journal, November 2009
- Duffy, D. M.
- Materials Today, Vol. 12, Issue 11
He cluster dynamics in fusion related plasma facing materials
journal, June 2015
- Krasheninnikov, S. I.; Smirnov, R. D.
- Nuclear Fusion, Vol. 55, Issue 7
Atomistic modeling of growth and coalescence of helium nano-bubbles in tungsten
journal, August 2015
- Smirnov, R. D.; Krasheninnikov, S. I.; Guterl, J.
- Journal of Nuclear Materials, Vol. 463
Thermal stability of helium–vacancy clusters in iron
journal, April 2003
- Morishita, K.; Sugano, R.; Wirth, B. D.
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 202
An improved N -body semi-empirical model for body-centred cubic transition metals
journal, July 1987
- Ackland, G. J.; Thetford, R.
- Philosophical Magazine A, Vol. 56, Issue 1
Interatomic potentials for simulation of He bubble formation in W
journal, January 2013
- Juslin, N.; Wirth, B. D.
- Journal of Nuclear Materials, Vol. 432, Issue 1-3
Automated identification and indexing of dislocations in crystal interfaces
journal, October 2012
- Stukowski, Alexander; Bulatov, Vasily V.; Arsenlis, Athanasios
- Modelling and Simulation in Materials Science and Engineering, Vol. 20, Issue 8
Fast Parallel Algorithms for Short-Range Molecular Dynamics
journal, March 1995
- Plimpton, Steve
- Journal of Computational Physics, Vol. 117, Issue 1
Competing Kinetics and He Bubble Morphology in W
journal, March 2015
- Sandoval, Luis; Perez, Danny; Uberuaga, Blas P.
- Physical Review Letters, Vol. 114, Issue 10
Microstructure evolution in tungsten during low-energy helium ion irradiation
journal, December 2000
- Iwakiri, H.; Yasunaga, K.; Morishita, K.
- Journal of Nuclear Materials, Vol. 283-287
Works referencing / citing this record:
Helium in-plane migration behavior on 〈1 0 0〉 symmetric tilt grain boundaries in tungsten
journal, July 2018
- Yang, Zhuocen; Hammond, Karl D.
- Journal of Physics: Condensed Matter, Vol. 30, Issue 32
Helium flux effects on bubble growth and surface morphology in plasma-facing tungsten from large-scale molecular dynamics simulations
journal, May 2019
- Hammond, Karl D.; Naeger, Ian V.; Widanagamaachchi, Wathsala
- Nuclear Fusion, Vol. 59, Issue 6
An Overview of Recent Standard and Accelerated Molecular Dynamics Simulations of Helium Behavior in Tungsten
journal, August 2019
- Sandoval, Luis; Perez, Danny; Uberuaga, Blas P.
- Materials, Vol. 12, Issue 16