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Sputter erosion at graphite wall components is likely to prove a serious problem in future fusion devices. In present machines, eroded carbon is redeposited with hydrogen at other places on the wall surface in transparent form (a-C:H). The deposits are easy to observe because of the appearance of interference colours which mainly depend on thickness, and therefore enable direct measurements of carbon erosion.

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Authors: WIENHOLD P, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);WESCHENFELDER F, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);MÖLLER R, Forschungszentrum Jülich GmbH (KFA) (DE);MOLLER R, Forschungszentrum Julich GmbH (KFA) (DE)
Bibliographic Reference: Article: Proceedings of the 20th European Conference on Controlled Fusion and Plasma Physics, Vol. III (1993) pp. 1119-1122
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