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Abstract

Cross-field transport of test ions is investigated in a linear Q-machine plasma. Test particles are created and followed in their motion by an optical tagging diagnostic scheme. Direct information on ion diffusivity is obtained from a comparison between the actual tag signal and a simple theoretical simulation. Diffusion is demonstrated to be supported by classical mechanisms. When different noble buffer gases are injected, the plasma reacts in such a way that the diffusivity remains classical but its magnitude is considerably reduced.

Additional information

Authors: FASOLI A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);PARIS P J, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);SKIFF F, University of Maryland, Laboratory of Plasma Research, College Park (US);GOOD T N, Gettisburgh College, Department of Physics (US)
Bibliographic Reference: Report: LRP 444/91 EN (1991) 18 pp.
Availability: Available from Confédération Suisse, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, 21 avenue des Bains, 1007 Lausanne (CH)
Record Number: 199210213 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en