Crystal orientation effects on implantation of low-energy hydrogen, helium and hydrogen/helium mixtures in plasma-facing tungsten surfaces

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Authors
Linn, Brian C.
Issue Date
2014-12
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Electronic thesis
Thesis
Language
ENG
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Mechanical engineering
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Abstract
The development of plasma-facing materials (PFM) is one of the major challenges in realizing fusion reactors. Materials deployed in PFMs must be capable of withstanding the high-flux of low-energy hydrogen and helium ions omitted from the plasma while not hindering the plasma. Tungsten is considered a promising candidate material due to desirable material properties including its high melting temperature, good thermal conductivity and relatively low physical and chemical sputtering yields. This thesis uses molecular dynamic simulations to investigate helium and hydrogen bombardment of tungsten and the underlying physical effects (e.g. sputtering, erosion, blistering).
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December 2014
School of Engineering
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Rensselaer Polytechnic Institute, Troy, NY
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