This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1016/S0022-3115(00)00614-0 in citations.
Mixed-material coating formation on tungsten surfaces during plasma exposure in TEXTOR-94
Mixed-material coating formation on tungsten surfaces during plasma exposure in TEXTOR-94
A polished graphite sample with a tungsten layer on the plasma-facing surface was exposed to the scrape-off plasma of TEXTOR-94 for about 200 s of discharge time. The plasma exposure caused a contamination layer with a thickness up to 300 nm consisting mainly of the deposited plasma impurity carbon...
Saved in:
Personal Name(s): | Hildebrandt, D. |
---|---|
Wienhold, P. / Schneider, W. | |
Contributing Institute: |
Institutsbereich I; IPP-1 Institutsbereich II; IPP-2 |
Published in: | Journal of nuclear materials, 290-293 (2001) S. 89 - 93 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2001
|
Physical Description: |
89 - 93 |
DOI: |
10.1016/S0022-3115(00)00614-0 |
Document Type: |
Journal Article |
Research Program: |
Wandkonditionierung und Plasma-Wand-Prozesse |
Series Title: |
Journal of Nuclear Materials
290-293 |
Subject (ZB): | |
Publikationsportal JuSER |
A polished graphite sample with a tungsten layer on the plasma-facing surface was exposed to the scrape-off plasma of TEXTOR-94 for about 200 s of discharge time. The plasma exposure caused a contamination layer with a thickness up to 300 nm consisting mainly of the deposited plasma impurity carbon and the tungsten substrate material. The processes and conditions involved in the growth of such mixed material layers are examined. In accompanying experiments, the penetration of carbon into tungsten by diffusion and ion implantation at different temperatures has been measured, The influence of synergistic effects on the carbon penetration into tungsten by the simultaneous impact of carbon and hydrogen ions was studied by irradiation of tungsten with CH3 ions. The discussion also includes processes such as non-uniform deposition, preferential erosion and prompt local redeposition. (C) 2001 Elsevier Science B.V. All rights reserved. |