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Abstract

First results of the application of lithium-beam activated charge exchange spectroscopy to a tokamak edge plasma are reported. Radial density profiles of several highly ionised states of carbon (C(4+) to C(6+)) were measured in the outmost 20 cm of ohmically heated TEXTOR discharges. Based on these profiles, the transport of carbon released from limiter surfaces was studied by applying a one-dimensional steady-state particle balance equation, which contains convective and diffusive parts. To explain the experimentally measured profiles within the model used, an additional outward convection velocity has to be assumed.

Additional information

Authors: CLAASSEN H A, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);SCHORN R P, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);GERHAUSER H, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);HINTZ E, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 176 & 177 (1990) pp. 398-403
Record Number: 199110871 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en