Analysis of fast wave current drive in reactor scale tokamaks through Hamiltonian theory
The efficiency of the fast magnetosonic wave for driving non-inductive current in reactor-like plasmas depends on the coupling between the wave and the electrons. A Hamiltonian approach, in collisionless regimes, is necessary to determine the domains where trajectories become stochastic and quasi-linear diffusion occurs, depending in a self-consistent manner on field amplitude and spectrum. Quantitative conditions for high efficiency current drive are given for several practical examples. Propagation of the fast wave in plasmas free of any strong ionic absorbtion takes place on multiple passes and plays a determinant role in modifying the spectra.
Bibliographic Reference: Paper presented: 13th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Washington DC (US), Oct. 1-6, 1990
Availability: Available from (1) as Paper EN 35706 ORA
Record Number: 199011690 / Last updated on: 1994-12-02
Original language: en
Available languages: en