Return To: Session FTP - Fusion Technology (Wednesday, 21 October)
Prev Page: (FTP/28) 3-D Electromagnetic Transient Characteristics of In-Vessel Components
Next Page: (FTP/37) Present Status of SiCf/SiC Composites as Low-Activation

(FTP/34) Hydrogen Isotope Inventories in Plasma Facing Components of ASDEX Upgrade

   
K. Krieger , H. Maier , D. Grambole ¹, D. Schleussner ², 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.

Read the full paper in PDF format.