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First experimental observation of a radio frequency (RF) wave induced particle pinch has been made in experiments at the Joint European Torus (JET) with nearly on-axis Ion Cyclotron Range of Frequencies (ICRF) heating. Significant differences have been detected in discharges where the waves have been directed in opposite toroidal directions. In particular, fast ion driven Alfvén Eigenmode activity, sawtooth behavior and proton distribution functions have been found to be strongly affected. The analysis of the discharges using numerical 3-dimensional simulations of the distribution function of the resonating ions shows that the observed differences are consistent with an ICRF-induced particle pinch predicted by theory.

Additional information

Authors: ERIKSSON L G ET AL, JET Joint Undertaking, Abingdon, Oxon (GB);MANTSINEN M, Association Euratom-TEKES, Helsinki University of Technology, Department of Engineering Physics and Mathematics (FI);BORBA D, Associação EURATOM/IST, Lisbon (PT);FASOLI A, CRPP-EPFL, Association Euratom-Swiss Confederation, Lausanne (CH);HEETER R, Princeton Plasma Physics Laboratory (US);CARLSSON J ET AL, Royal Institute of Technology, Stockholm (SE)
Bibliographic Reference: Report: JET-P(98)07 EN (1998) 6pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon, OX14 3EA (GB)
Record Number: 199810642 / Last updated on: 1998-05-26
Original language: en
Available languages: en