Waves and instabilities in streaming magnetized plasma

Abstract

The evolution of electrostatic waves and excitation of instabilities in two-component streaming plasmas in a magnetic field are analytically studied. The modified spectrum and growth term of instability are derived to explain the physical situations like cold plasma, warm plasma, ion fusion aspect along with the uncoupled mode. The striking features of the analysis are displayed in the form of profiles of the refractive index (η) varying with particle thermal energy (KT) in different streaming regimes (V0). The effect of streaming enhances the frequency propagation of waves or dispersion, including phase velocity and refractive indices. However, the damping or growth term of instability is diminished, appreciably owing to the streaming. The findings may have important implications to space and magnetospheric settings where a beam–plasma interaction exists.