Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1567503 | Journal of Nuclear Materials | 2009 | 4 Pages |
Abstract
We present state-of-the-art molecular dynamics (MD) simulations of high-density plasma-bombardment of carbon, mimicking plasma–wall interactions at the fusion reactor first wall. Bare and hydrogenated amorphous carbon surfaces with temperatures in the range of 300–800 K are bombarded by a distribution of neutral hydrogen molecules representing well-defined center-of-mass and rovibrational temperatures. The MD simulations are benchmarked against experiments in which a heated carbon surface is irradiated with hydrogen molecules from a plasma source. Comparisons between simulations and experiment are presented for the rovibrational distributions upon reflection and the rotational and vibrational accommodation coefficients.
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Authors
P.S. Krstic, E.M. Hollmann, C.O. Reinhold, S.J. Stuart, R.P. Doerner, D. Nishijima, A.Yu. Pigarov,