On the distribution of metals deposited onto the limiter and the liner of tokamaks after long-term operation

Three inspections of the inner parts of the discharge vessels of T-10 and TM1-MH after long-term operation revealed that metals originating from the various construction materials are distributed inhomogeneously over the first wall of these tokamaks. This partially allows one to identify local metal...

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Bibliographic Details
Published in:Journal of nuclear materials 1987-02, Vol.145, p.671-675
Main Authors: Wolff, H., Grote, H., Herrmann, A., Hildebrandt, D., Laux, M., Pech, P., Reiner, H.-D., Ziegenhagen, G., Chicherov, V.M., Grashin, S.A., Kopecky, V., Jakubka, K.
Format: Article
Language:English
Subjects:
erosion
impurity transport
limiters
poloidal variations
redeposition
surface composition of the wall
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Summary:Three inspections of the inner parts of the discharge vessels of T-10 and TM1-MH after long-term operation revealed that metals originating from the various construction materials are distributed inhomogeneously over the first wall of these tokamaks. This partially allows one to identify local metal sources and to indicate anisotropies of the transport. Different materials from inner structures, even if they were only used in earlier experiments, are observed at all limiter surfaces and as components of the debris consisting of macroparticles of different size, shape and elemental composition. There are metallic deposits of the form of structured films or of solidified droplets.
ISSN:0022-3115
1873-4820
DOI:10.1016/0022-3115(87)90421-1