Plasma–Surface Interactions Under High Heat and Particle Fluxes

Gregory De Temmerman, Kirill Bystrov, Feng Liu, Wei Liu, Thomas Morgan, Irem Tanyeli, Miranda van den Berg, Haiyan Xu, Jakub Zielinski

Abstract


The plasma-surface interactions expected in the divertor of a future fusion reactor are characterized by extreme heat and particle fluxes interacting with the plasma-facing surfaces. Powerful linear plasma generators are used to reproduce the expected plasma conditions and allow plasma-surface interactions studies under those very harsh conditions. While the ion energies on the divertor surfaces of a fusion device are comparable to those used in various plasma-assited deposition and etching techniques, the ion (and energy) fluxes are up to four orders of magnitude higher. This large upscale in particle flux maintains the surface under highly non-equilibrium conditions and bring new effects to light, some of which will be described in this paper.

Keywords


plasma-surface interactions; refractory metals; carbon; linear plasma generator.

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This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague