Nonlinear surface waves propagating along a boundary of magnetoactive plasma and vacuum

Dispersion relation is obtained for a nonlinear unpolarized surface wave propagating along a boundary between vacuum and a magnetoactive plasma in a geometry when a dc-magnetic field is parallel to both the boundary and the propagation of the surface wave. A general approach used is based on the knowledge of the corresponding first integral of Maxwell's equations.     

Nonpotential surface waves in magnetoactive plasma structures

Conclusions In this paper we have studied the dispersion characteristics of nonpotential surface waves in two- and three-layered magnetized wave-bearing structures. For the case of a vacuum cavity in an infinite plasma, we have obtained an analytic solution for the SW frequency in a regime which is highly nonpotential. We have shown that when the thickness of the plasma layer in a vacuum-plsma-vacuum waveguide is reduced, the dispersion changes its character.We have investigated numerically how magnetic fields, the radii of the cylinders, and the azimuthal wave number affect the LF and HF branches of the spectrum of surface waves.Khar'kov State University. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 34, No. 6, pp. 639–645, June, 1991.     

Nonlinear interactions of azimuthal surface waves in a magnetoactive plasma waveguide

Several possible three-wave and four-wave interactions, namely decay and modulational instabilities of a specific type of surface waves-azimuthal sufaces waves (ASW)-in a magnetoactive plasma waveguide are considered. The studied ASW propagate in the azimuthal direction at the cylindrical waveguide wall-plasma interface.     

Basic properties of nonlinear surface charge waves at a plasma boundary

The nonlinear properties of surface charges are here analyzed under ideal conditions. We thus deduce a new single equation from the wellknown equations which govern the cold electron plasma motion. Simple formulas that describe the propagation of surface charge perturbations along the plasma boundary are also found.     

Electromagnetic waves in a magnetoactive fluctuating plasma

Radiophysics and Electronics Institute, Academy of Sciences of the USSR. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 32, No. 1, pp. 27–33, January, 1989.     

Penetration of electromagnetic waves into magnetoactive plasma

Landau studied the longitudinal field penetration into a semi-bounded plasma considering specularly reflecting electrons at the boundary. Kurilko and Popov and then Gorman examined the same problem considering a fraction “p” of all incident electrons reflecting specularly and the remaining portion difusely. Lastly, Mason treated the same problem at length and gave solutions for specular and diffuse reflections. Here the penetration of transverse electromagnetic waves into magnetoactive semi-bounded plasma has been studied and the electric field for specular reflection of electrons is obtained.     

Propagation of azimuthal waves in magnetoactive waveguides filled with a current-carrying plasma

It is shown that a cylindrical metallic waveguide fully filled with a magnetoactive plasma can propagate coupled ordinarily polarized bulk and extraordinarily polarized surface waves along its azimuthal direction. Interaction between these waves is studied in the case when an external magnetic field has axial and azimuthal components. For the case of a regular profile, a practically convenient analytical expression for a correction to the eigenfrequency of the waves that is due to the external azimuthal magnetic field is derived.     

Propagation of electromagnetic waves in hot magnetoactive plasma

The paper derives the general form of the tensor of dielectric permittivity? _ij(ω,k), Eq. (15), of non-relativistic hot magnetoactive collisionless plasma taking into consideration the influence of spatial dispersion. The general form of the tensor? _ij(ω,k) is used to express the tensorε _ij(ω,k) in the region of weak and strong spatial dispersion and in some special cases. A general dispersion equation (30) is derived and an analysis is made of the waves propagating in hot magnetoactive plasma. The expressions derived are used to investigate the damping of a right-handed circularly polarized wave propagating in hot magnetoactive plasma in the direction of the magnetic field.     

Stability of surface waves at magnetized plasma – metal interface

The stability of high‐frequency potential surface waves at a dense magnetized plasma – metal interface with respect to a low‐frequency plasma density modulation is studied in the point of view of the surface waves control. The discussion is addressed to the situation, when an external steady magnetic field is directed perpendicularly to the interface. The nonlinear interaction process of the high‐frequency surface wave, its satellites and the low‐frequency plasma density perturbation is investigated. It is shown that the low‐frequency plasma density perturbation can be represented as a superposition of forced waves of surface and volume types and can lead to an additional attenuation of the surface waves. This attenuation arises when the surface wave amplitude exceeds the threshold value. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

High-frequency forces acting on the boundary of a magnetoactive plasma and vacuum

Using the tensor of time-averaged stresses, a study is made of the force which an electromagnetic wave exerts on the sharp plasma-vacuum boundary and on the volume of bounded plasma under the assumption that the magnetostatic field is parallel to the plasma-vacuum boundary.The author wishes to thank R. Klíma for numerous discussions, J. Teichmann and participants of the seminar held in the Plasma Physics Institute on 21. 5. 1969 for assessing the results.     

Resonance excitations at the surface of a metal with a gyrotropic plasma coating

Gor'kii State University. Translated from Izvestiya Vysshikh Zavedenii, Radiofizika, Vol. 33, No. 6, pp. 659–665, June, 1990.