Hydrogen isotope inventories in the ASDEX Upgrade tungsten coated divertor tiles

Autor: D Schleußner, H Maier, P Franzen, R Behrisch, M Balden, null The ASDEX-Upgrade Team, M Perl, W Knapp, Chr Edelmann
Rok vydání: 1999
Předmět:
Zdroj: Journal of Nuclear Materials. :1296-1302
ISSN: 0022-3115
Popis: The total hydrogen isotope inventories in the tungsten coated divertor tiles of ASDEX-Upgrade were measured by thermal desorption spectroscopy (TDS) and - in the near surface region - by nuclear reaction analysis (NRA). The highest amounts of deuterium (≤ 5 x 10 22 D/m 2 ) are measured in the inner divertor region outside the separatrix due to the formation of a C:H layer on the tungsten by codeposition of deuterium with carbon. The inventories in the outer divertor - where erosion dominates - are generally smaller by an order of magnitude.
Databáze: OpenAIRE