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This paper presents experimental data of the plasma edge ion temperature on TEXTOR. The spontaneous radiation emitted in the UV range by three carbon ions allows the determination of their radial position and temperature. The toroidal belt limiter ALT-II strongly affects the poloidal distribution of the impurity concentration of the lower ionisation states. This is illustrated and discussed, together with the problem of thermalisation between impurities and deuterons. The edge T(i) is given for ohmic and NBI-heated plasmas and compared with the central T(i) and with the electron temperature profile. The analogies between Z(eff) and the edge temperatures are also discussed.

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Authors: TELESCA G, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);CLAAßEN H A, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);GRAFFMANN E, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);VAN OOST G, Ecole Royale Militaire, Bruxelles (BE);CLAA?EN H A, Forschungszentrum Julich GmbH, Institut fur Plasmaphysik (DE)
Bibliographic Reference: Article: Proceedings of the 19th Conference on Controlled Fusion and Plasma Physics, Vol. 2 (1992) pp. 771-774
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