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Radiation-Induced Helium Bubbles in Metals
Open AccessFeature PaperReview

An Overview of Recent Standard and Accelerated Molecular Dynamics Simulations of Helium Behavior in Tungsten

1
Theoretical Division T-1, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2
Materials Science and Technology Division MST-8, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
*
Author to whom correspondence should be addressed.
Materials 2019, 12(16), 2500; https://doi.org/10.3390/ma12162500
Received: 1 July 2019 / Revised: 29 July 2019 / Accepted: 2 August 2019 / Published: 7 August 2019
(This article belongs to the Special Issue Radiation Damage in Materials: Helium Effects)
One of the most critical challenges for the successful adoption of nuclear fusion power corresponds to plasma-facing materials. Due to its favorable properties in this context (low sputtering yield, high thermal conductivity, high melting point, among others), tungsten is a leading candidate material. Nevertheless, tungsten is affected by the plasma and fusion byproducts. Irradiation by helium nuclei, in particular, strongly modifies the surface structure by a synergy of processes, whose origin is the nucleation and growth of helium bubbles. In this review, we present recent advances in the understanding of helium effects in tungsten from a simulational approach based on accelerated molecular dynamics, which emphasizes the use of realistic parameters, as are expected in experimental and operational fusion power conditions. View Full-Text
Keywords: helium bubbles; tungsten; nucleation and growth helium bubbles; tungsten; nucleation and growth
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MDPI and ACS Style

Sandoval, L.; Perez, D.; Uberuaga, B.P.; Voter, A.F. An Overview of Recent Standard and Accelerated Molecular Dynamics Simulations of Helium Behavior in Tungsten. Materials 2019, 12, 2500.

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