On absorption of low frequency electromagnetic fields
The drift kinetic equation (DKE) was used to establish a formula for power absorption of small amplitude, low frequency electromagnetic (EM) fields in a hot toroidal axisymmetric plasma. The stationary plasma was first considered. Electrons and ions were described by local Maxwellian distributions, alpha particles by a local slowing-down distribution. The fluctuating part of the distribution function for each species was then evaluated from the linearised DKE in terms of the EM fields using a perturbation method. By integrating the resulting distribution function over velocity space, an explicit formula for the power absorbed by each species was obtained. To obtain an expression suitable for direct implementation in an ideal-MHD code, the electric field component parallel to the magnetostatic field was evaluated using the quasi-neutrality equation.
Bibliographic Reference: Report: LRP 471/93 EN (1993) 13 pp.
Availability: Available from Confédération Suisse, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, 21 avenue des Bains, 1007 Lausanne (CH)
Record Number: 199310597 / Last updated on: 1994-11-29
Original language: en
Available languages: en