Influence of the Relativistic Character of the Electron HF Motion on the Non-Linear Wave Dynamics in Plasmas.

摘要

In this review, the results are presented of a number of theoretical works carried out recently in the Plasma Physics Department of the Institute of Physics, Academy of Sciences of the Georgian SSR. These results indicates that in a number of cases even a weak relativistic effect substantially affects the character of non-linear processes occuring in both isotropic and magnetoactive plasmas. In particular, in isotropic plasma this effect gives rise to the new modulational instability regions both for longitudinal and transverse waves. The relativistic effect contribution becomes significant even for pumping wave amplitudes considered earlier without taking this effect into account. This contribution in case of the magnetoactive plasma is especially large due to the possibility of the resonance growth of the particle energy in the pumping wave field. The results are also presented of non-linear dynamic investigation of such waves. (Atomindex citation 16:051914)