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Erosion of carbon and tungsten in the divertor of ASDEX Upgrade was investigated by surface analysis of target tile probes. The probes were exposed in the divertor using a manipulator system. Erosion of carbon was measured by graphite probes covered with a 150 nm layer of (13)C isotope to distinguish from the intrinsic carbon content. Tungsten erosion was measured by similar probes with 1-20 nm tungsten markers evaporated on the surface. From the measured erosion, sputtering yields were determined using plasma parameters at the target plates obtained from flush mounted Langmuir probes.

Additional information

Authors: KRIEGER K ET AL, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 241-243 (1997) pp. 684-689
Record Number: 199711466 / Last updated on: 1997-11-18
Original language: en
Available languages: en