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Details of the sawtooth activity in the tokamak plasma are still unresolved and under discussion since their first observation more than a decade ago. A reconnection, a turbulent and a quasi-interchange model were meanwhile proposed. Here experimental data are obtained by ECE-radiation detection and by a 150 GHz millimeter wave scattering system, in the q=1 region. These measurements for the first time support strongly a model which predicts a rotating turbulent domain before the sawtooth crash event.

Additional information

Authors: JADOUL M, Laboratoire de Physique des Plasmas, École Royale Militaire, Bruxelles (BE);WAIDMANN G, Institut für Plasmaphysik, KFA Jülich GmbH (DE)
Bibliographic Reference: Paper presented: 16th European Conference on Controlled Fusion and Plasma Physics, Venezia (IT) March 13-17, 1989
Availability: Available from (1) as Paper EN 34785 ORA
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