Maximum amplitude of high-frequency field at plasma resonance
In an analysis of the interaction of a high-frequency electromagnetic field with an inhomogeneous plasma, the plasma is described in the hydrodynamic approximation. Nonlinear stimulated plasma waves are studied. It is shown that nonlinear mechanisms involving the self-intersection of electron trajectories, which arise because of the plasma inhomogeneity or when relativistic effects are taken into account, can limit the amplitude of the electromagnetic field at plasma resonance. The maximum field amplification at resonance is found for the case of a cold, collisionless plasma. This amplification factor is found to be of the order of min)L/r/sub 0/)/sup 1///sup 2/, (lambda/r/sub 0/)/sup 2///sup 3/). Here L is the scale dimension of the inhomogeneity, lambda=c/..omega.., r/sub 0/=eE/sub 0//m/sup 2/, and E/sub 0/ is the amplitude of the pump wave. The role of ion motion is analyzed qualitatively. (AIP)
- Research Organization:
- P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
- OSTI ID:
- 7323115
- Journal Information:
- Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 2:1; ISSN SJPPD
- Country of Publication:
- United States
- Language:
- English
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