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| Hauptseite > Publikationsdatenbank > Simulation calculations of mutual contamination between tungsten and carbon and its impact on plasma surface interactions |
| Hauptseite > Publikationsdatenbank > Simulation calculations of mutual contamination between tungsten and carbon and its impact on plasma surface interactions |
| Journal Article | PreJuSER-37926 |
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2001
Elsevier Science
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/S0022-3115(00)00632-2
Abstract: Mutual contamination between C and W, resulting from the simultaneous use of these materials as plasma facing components, is simulated by means of a computer simulation code, Erosion and Deposition based on Dynamic model (EDDY). W deposition on C rapidly increases the reflection coefficient for D and C impurity. In comparison between the calculation and a C-W twin test limiter experiment in TEXTOR-94, C release from the C side of the limiter is dominated by reflection of C impurity from the W deposits, in addition to physical sputtering of C; chemical erosion is strongly suppressed. Due to the dynamic effect which makes C-W mixed layer, C deposition on W gradually changes the reflection coefficient and sputter yields. Formation of a sharp boundary between erosion and C deposition zones on the W side of the limiter is well reproduced by simulation. Local redeposition patterns of C and W on the limiter surface are also calculated. (C) 2001 Elsevier Science B.V, All rights reserved.
Keyword(s): J ; plasma-material interaction (auto) ; tungsten (auto) ; carbon (auto) ; erosion (auto) ; deposition (auto) ; modelling (auto)
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