Excitacion of Electron Plasma Oscillations in Suddenly Created Weakly Nonlinear Magnetized Plasma

Abstract

Suddenly created plasmas appear practically in all pulse gas discharges, laser created plasmas, lightning and nuclear explosions. In the special case where the rise time of plasma is much smaller then the decay time, it is possible to approximate the time variation of plasma parameters with the Heaviside step function. The transformation of the left hand circularly polarized source EM wave in the suddenly created cold magnetized plasma is analyzed by the first order perturbation theory. The generation of new wave modes in suddenly created cold magnetized plasma have been investigated also for the some specific orientation of the external static magnetic field in the respect of the wave number and when ion motion was taken into account. However, the interaction between new created wave modes in plasma were not considered.