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K. Krieger, H. Maier, D. Grambole1,
D. Schleussner2, P. Franzen and the ASDEX Upgrade
Team
Max-Planck-Institut für Plasmaphysik, EURATOM Association,
D-85748 Garching
1 Forschungszentrum Rossendorf e.V., D-01314 Dresden
2 Otto-von-Guericke-Universität, D-39016 Magdeburg
Abstract. Deuterium inventories have been measured in plasma facing components
of ASDEX Upgrade. Nearly 60% of the total D-inventory was observed in the
lower inner divertor target plate in redeposited layers of low-Z material.
The outer divertor, however, was found to be dominated by erosion processes
and correspondingly retained a much lower amount of deuterium. The D-inventory
at the main chamber plasma facing components can be explained by a model
employing implantation of charge-exchange neutrals, which yields very good
agreement with the experimental findings for all surfaces not exposed to
direct ion fluxes.
IAEA 2001
