Plasma-surface interactions of hydrogenated carbon |
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Authors: | P.S. Krstic C.O. Reinhold |
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Affiliation: | a Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6372, USA b Department of Chemistry, Clemson University, Clemson, SC 29634, USA |
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Abstract: | We present a review of our study of interactions of plasma particles (atoms, molecules) with hydrogenated amorphous carbon surfaces typical of plasma-facing divertor tiles and deposited layers in magnetic-fusion reactors. Our computer simulations of these processes are based on classical molecular dynamics simulations, using the best currently available multibody bond-order hydrocarbon potentials. Our research in this field has been focused on the chemical sputtering of carbon surfaces at low impact energies, the most complex of the plasma-surface interactions (PSI). Close collaboration with beam-surface and plasma-surface experiments provides not only theoretical support for the experiments, but also builds suitable benchmarks for our methods and codes, enabling production of theoretical plasma-surface data with increased reliability. |
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Keywords: | 68.49.Bc 34.35.+a 68.49.Sf 52.40.Hf 61.80.X |
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