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The present understanding of the erosion processes of graphite by particle impact is outlined, with emphasis on the use in fusion devices. There are three different ion induced erosion mechanisms: physical sputtering, radiation enhanced sublimation and chemical sputtering. Their application in fusion devices determines the choice of the ion species, hydrogen, deuterium, helium, oxygen and self-ions, as well as the energy range from thermal energies to several keV. The paper also presents certain empirical formulae for which comprehensive theories do not yet exist. Finally, the influence of graphite doping on the erosion processes is discussed.

Additional information

Authors: ROTH J, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);VIETZKE E, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);HAASZ A A, University of Toronto, Institute for Aerospace Studies, Ontario (CA)
Bibliographic Reference: Article: Atomic and Plasma-Material Interaction Data for Fusion (Supplement to Nuclear Fusion), Vol. 1 (1991) pp. 63-78
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