Abstract
The relationship between energy absorption and the continuous frequency spectrum of the linearized equations of ideal MHD is investigated. We limit ourselves to incompressible fluid perturbations for which the continuum stems from resonant surfaces where the oscillation frequency equals the local frequency of an Alfvén wave. Details of this absorption process are illustrated by obtaining the response of the diffuse sheet pinch to an external current source. Expressions are derived that give the rate at which energy is transferred to the plasma, and show the spatial distribution of the absorbed energy. The results indicate that the absorption is enhanced if the plasma profile has regions of large spatial gradients. This enhanced absorption is a consequence of the presence of surface waves.
Publisher
Cambridge University Press (CUP)
Reference21 articles.
1. Decay of MHD waves by phase mixing
2. Resonant Absorption in Zero-Temperature Nonuniform Plasma
3. Grossmann W. , Kaufmann M. & Neuhauser J. 1973 Proc. 3rd Int. Symp. on Toroidal Plasma Confinement, Garching, E 3.
4. Plasmas
Cited by
111 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献