Nonlinear absorption of Alfvén waves: model taking into account photorecombination radiation

Abstract

Damping of the Alfvén wave falling onto the boundary of the dissipative plasma is considered. In this model, the following dissipation mechanisms are included: the hydrodynamic viscosities and thermal conductivities of electrons and ions, magnetic viscosity, thermal relaxation, losses due to bremsstrahlung as well as the synchrotron and photorecombination radiations. These studies are based on the equations of the two-fluid electromagnetic hydrodynamics that fully account for the electron inertia. Numerical analysis based on the implicit finite-difference scheme indicates the existence of a quasi-stationary regime of the Alfvén wave damping in dissipative plasma and shows that the Alfvén wave can be imprisoned in plasma.