EXPERIMENTAL INVESTIGATIONS OF HIGH-Z MATERIALS IN THE ASDEX-UPGRADE DIVERTOR

Authors
ROTH J NAUJOKS D KRIEGER K FIELD A LIEDER G HIRSCH S
Citation
J. Roth et al., EXPERIMENTAL INVESTIGATIONS OF HIGH-Z MATERIALS IN THE ASDEX-UPGRADE DIVERTOR, Journal of nuclear materials, 222, 1995, pp. 231-234
Citations number
24
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
222
Year of publication
1995
Pages
231 - 234
Database
ISI
SICI code
0022-3115(1995)222:<231:EIOHMI>2.0.ZU;2-#
Abstract
The erosion, plasma penetration and redeposition of divertor plate mat erial such as C, Si, V, Mo and W have been studied in the ASDEX-Upgrad e divertor. Long-term erosion and redeposition have been studied using evaporated markers, while time resolved measurements and plasma penet ration were studied spectroscopically on W tiles. The expected reducti on of erosion due to plasma ion sputtering could be confirmed. This re duced erosion is accompanied by largely enhanced deposition for high-Z ions, when the gyroradius exceeds the ionisation length.