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Simulation study of...
Simulation study of carbon and tungsten deposition on W/C twin test limiter in TEXTOR-94
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Ohya, K. (author)
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Kawakami, R. (author)
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Tanabe, T. (author)
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Wada, M. (author)
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Ohgo, T. (author)
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Philipps, V. (author)
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Pospieszczyk, A. (author)
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Schweer, B. (author)
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Huber, A. (author)
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- Rubel, Marek J. (author)
- KTH,Alfvénlaboratoriet
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von Seggern, J. (author)
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Noda, N. (author)
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(creator_code:org_t)
- 2000
- 2000
- English.
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In: Journal of Nuclear Materials. - 0022-3115 .- 1873-4820. ; 283, s. 1182-1186
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- In order to investigate the impurity release and surface modification on a W/C twin test limiter, made of a half of W and the other half of C, exposed to the edge plasma of TEXTOR-94, simulation calculations of ion-surface interaction are conducted by a Monte Carlo code. According to the calculations, experimentally observed spatial distributions of WI and CII line intensities around the W side of the limiter can be explained by physical sputtering of W, reflection of bombarding C ions and physical sputtering of implanted C. The CII line emission, resulting from thermal C atoms, around the C side of the limiter is suppressed by deposition of W, and the reflection of C ions from W deposited on C causes the CII intensity to decay more slowly than that from C without the deposition. Bombardment with deuterium edge plasmas, containing impurity W, produces a thick W layer on the C side of the limiter, whereas C implanted in the W side is strongly sputtered due to impact of most constituent D ions.
Keyword
- edge plasmas
- molybdenum
- release
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ohya, K.
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Kawakami, R.
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Tanabe, T.
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Wada, M.
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Ohgo, T.
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Philipps, V.
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show more...
-
Pospieszczyk, A.
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Schweer, B.
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Huber, A.
-
Rubel, Marek J.
-
von Seggern, J.
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Noda, N.
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show less...
- Articles in the publication
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Journal of Nucle ...
- By the university
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Royal Institute of Technology