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Wave absorption in a torus is found to differ significantly from the classical Landau result. Instead of the isolated resonance at v = w/k, the parametric beating between the particles' periodicity and the wave periodicity gives rise to an infinite, discrete spectrum of resonances. The spread of wave absorption over the velocity space leads to an enhancement in damping, particularly for the high-phase-velocity waves. Physical interpretation of Landau damping as a diffusion-like process occurring at the parametric resonances is invoked to explain the phenomenon of toroidal Landau damping.

Additional information

Authors: PURI S, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Report: IPP 4/253 EN (1992) 12 pp.
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei München (DE)
Record Number: 199211257 / Last updated on: 1994-11-29
Original language: en
Available languages: en