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Abstract

In the gaps of the continuum Alfvén spectrum discrete, global modes induced by toroidicity (the so called Toroidal Alfvén Eigenmodes or TAE) have been shown to exist. These modes can be destabilised by the resonant interaction with the parallel motion of the energetic ions, as alpha particles produced in fusion reactions. The TAE stability is determined by the competition between such a driving mechanism and the coupling with the Alfvén continuum which provides a damping. The numerical study of the effect of high energy particles on MHD modes requires the solution of the fluid equations for the bulk plasma and of the kinetic equations for the energetic particles. This paper presents the hybrid code, together with the results of the MHD non-linear saturation.

Additional information

Authors: VLAD G ET AL., ENEA, Centro Ricerche Energia Frascati, Roma (IT);KAR C, Saha Institute of Nuclear Physics, Calcutta (IN)
Bibliographic Reference: Paper presented: 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisboa (PT), July 26-30, 1993
Availability: Available from (1) as Paper EN 37548 ORA
Record Number: 199310876 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en