Modeling of erosion and deposition patterns on C-W and W-Ta twin limiters exposed to the TEXTOR edge plasmas

Ohya, K. (author)

Tanabe, T. (author)

Wada, M. (author)

Ohgo, T. (author)

Hirai, T. (author)

Philipps, V. (author)

Kirschner, A. (author)

Pospieszczyk, A. (author)

Huber, A. (author)

Sergienko, G. (author)

Brezinsek, S. (author)

Noda, N. (author)

(creator_code:org_t)

Elsevier BV, 2004
2004
English.
In: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 329-33, s. 732-736

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

The erosion and deposition patterns on tungsten and tantalum test limiters exposed to the TEXTOR deuterium plasma containing a small amount of C impurity are simulated with the modified EDDY code. At the very top of the W and Ta limiters, there occurs neither erosion nor deposition, but the erosion proceeds slowly along the surface. When approaching the edge, the surface is covered by a thick C layer, which shows a very sharp boundary similar to the observation in surface measurements. In the erosion zone, the re-deposited carbon forms a W (Ta)-C mixed layer with small C concentration. Assumptions for chemical erosion yields of similar to0.01 for W and

By the author/editor: Ohya, K.; Tanabe, T.; Rubel, Marek J.; Wada, M.; Ohgo, T.; Hirai, T.; show more...; Philipps, V.; Kirschner, A.; Pospieszczyk, A.; Huber, A.; Sergienko, G.; Brezinsek, S.; Noda, N.; show less...

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