Ion cyclotron resonance for fast magnetosonic wavesin adiabatic traps

Abstract

The absorption of the electromagnetic waves in low-pressure plasma has been investigated in the axial-symmetric adiabatic trap under the cyclotron-resonance condition. The plasma radius is assumed to be greater than or equal to, to the order of magnitude, the transverse wavelength. In this case the solution to the linearized kinetic equation for resonance ions has been obtained as a power series in ion Larmor radius of the order of ρi²ⁿ⁻² as well as the expressions for the contribution from resonance ions into the wave electric current density and RF power absorbed by the plasma (n is the resonance multiplicity).