The sputtering yield of typical impurity ions for different fusion reactor materials

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Abstract

Sputtering yields of prospective materials for the first wall in fusion devices such as TiC, SiC, C, W, and stainless steel with typical impurity ions as O+ and C+ have been measured in the fusion-relevant energy range from 100 eV to 10 keV. In the case of oxygen-bombardment sputtering is reduced compared to sputtering with noble gas ions of similar atomic masses for all materials investigated but graphite. In the case of C+ -bombardment a collection of carbon was observed.

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