Electromagnetic Gain Mechanisms in Homogeneous Plasmas.
GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT
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A study of the flow of time varying electromagnetic energy is presented which indicates that a wide variety of energy gain mechanisms exist within homogeneous plasmas the required energy is supplied by the static currents and magnetic fields existing in the plasma. The specific case of two independent electromagnetic waves interacting within a homogeneous plasma is studied in great detail, and general conditions are derived, in terms of the propagation constants of such waves, that enables one to determine when energy gain or activity will be achieved. This study also leads to certain conclusions that are somewhat novel namely, that gain is possible with certain waves even though the waves are individually stable both temporally and spatially a gain mechanism exists that is the result of a static magnetic field alone no static current flow is required and finally, that certain gain mechanisms exist at all frequencies and for all nonzero values of static fields, i.e., these mechanisms have no thresholds. The paper concludes with a discussion of specific gain mechanisms in solid-state or collision-dominated plasmas. Author
- Electrical and Electronic Equipment
- Solid State Physics