WAVES AND INSTABILITIES IN STREAMING MAGNETIZED PLASMA

The evolution of electrostatic waves and excitation of instabilities i n two-component streaming plasmas in a magnetic field are analytically studied. The modified spectrum and growth term of instability are der ived to explain the physical situations like cold plasma, warm plasma, ion fusion aspect along with the uncoupled mode. The striking feature s of the analysis are displayed in the form of profiles of the refract ive index (eta) varying with particle thermal energy (KT) in different streaming regimes (V-0). The effect of streaming enhances the frequen cy propagation of waves or dispersion, including phase velocity and re fractive indices. However, the damping or growth term of instability i s diminished, appreciably owing to the streaming. The findings may hav e important implications to space and magnetospheric settings where a beam-plasma interaction exists. (C) 1998 American Institute of Physics . [S1070-664X(98)03604-0].