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In the last two years the basic erosion mechanisms of carbon due to thermal and energetic hydrogen atoms have been resolved and the range of erosion yield data has been extended into new regimes of ion flux and energy. The present paper reviews the recent achievements in fundamental understanding. Model prediction of the dependance on ion energy and flux are compared with new experimental results from fusion experiments and plasma simulators. For graphites doped with B or Si the decrease of the erosion yield as function of energy and temperature indicates which elemental steps in the erosion process are influenced.

Additional information

Authors: ROTH J, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE)
Bibliographic Reference: Article: Journal of Nyuclear Materials, (1999), 51-57
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