Analyses of Vlasov-Maxwell linear wave problems with large Larmor radii
The linearised Vlasov-Maxwell equations for an inhomogeneous bounded slab plasma have been derived without any assumption on the ratio of the Larmor radius to the fluctuation wavelength and inhomogeneity scale. The only assumptions are a Maxwellian equilibrium distribution function, a slowly varying magnetostatic field B(0) and a k(y) value of 0. In this case, the equations consist of three second order integro-differential equations for each component of the electric field. The first results of the code SEMAL, which solves these equations, are presented. They are compared with the results obtained with the code ISMENE, which solves these equations expanded to second order in the Larmor radii. Good agreement is found for the kinetic Alfvén wave, and a small shift in frequency is found for the surface mode of the fast magnetosonic wave. A formula for the local power absorption is also derived, which consists of a positive-definite term, due to resonant particles absorption, and a non-resonant term which can be of either sign.
Bibliographic Reference: Paper presented: 17th EPS Conference on Controlled Fusion and Plasma Heating, Amsterdam (NL), June 25-29, 1990
Availability: Available from (1) as Paper EN 35295 ORA
Record Number: 199110437 / Last updated on: 1994-12-02
Original language: en
Available languages: en