Measurements of the flux of metallic impurities to the ASDEX divertor plates
Abstract
Metal impurities (Fe, Cu) fluxes to the divertor plates of ASDEX were measured using a collector probe during discharges with various plasma parameters. The Cu depositions show generally a different distribution across the scrape-off layer compared to the Fe deposition. Variations of the Cu and Fe fluxes with auxiliary heating and vessel carbonization are analyzed and discussed in view of impurity production mechanisms.
- Publication:
-
ASDEX Contributions to the 8th International Conference on Plasma Surface Interaction in Controlled Fusion Devices
- Pub Date:
- November 1988
- Bibcode:
- 1988asde.nasa...96T
- Keywords:
-
- Diverters;
- Impurities;
- Neutral Beams;
- Plasma Physics;
- Tokamak Devices;
- Beam Injection;
- Copper;
- Iron;
- Nuclear Fusion;
- Particle Accelerator Targets;
- Plasma Control;
- Plasma Generators;
- Plasma Layers;
- Plasma Physics