Plasma-material interaction in laboratory experiments

The PMI group investigates the interaction of energetic and reactive species with surfaces.

Such processes play an important role where the boundary plasma impacts on solid surfaces.

Elementary plasma-surface-interaction processes are investigated predominantly in dedicated laboratory experiments and compared to results from real surfaces from fusion devices.

The group operates a number of small-scale and medium-scale laboratory experiments, the most important being the plasma source PlaQ and the high-flux ion source SIESTA and TAPAS.

Current research topics are sputtering, e.g., of steel but also of 3-d surfaces, permeation of hydrogen isotopes through fusion-relevant materials (tungsten, steel), investigation of liquid tin as divertor material and deuterium retention in fusion-relevant materials which is investigated in close cooperation with the group "ion beam analysis and modification".

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