On the propagation and interaction of ultralow-frequency waves in a waveguide with gyrotropic plasma
| Autor: | V. V. Tamoikin, P. V. Tsyganov |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physics
Nuclear and High Energy Physics Wave propagation Physics::Optics Astronomy and Astrophysics Statistical and Nonlinear Physics Electromagnetic radiation Electronic Optical and Magnetic Materials law.invention Alfvén wave Classical mechanics Physics::Plasma Physics law Quantum electrodynamics Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Electrical and Electronic Engineering Magnetohydrodynamics Mechanical wave Rectilinear propagation Waveguide Longitudinal wave |
| Zdroj: | Radiophysics and Quantum Electronics. 40:68-76 |
| ISSN: | 1573-9120 0033-8443 |
| Popis: | The propagation of ultralow-frequency (ULF) electromagnetic waves in a waveguide filled with magnetoactive plasma is consieered on the basis of the monoaxial crystal approximation which is more general than the MHD approximation. The formulas for the phase and group velocities of the ordinary (magnetoacoustic) and extraordinary waves (similar to Alfven waves in the MHD approximation) are derived. It is shown that analysis outside the scope of the MHD approximation results in a finite (nonzero) velocity of energy propagation of the extraordinary wave (Alfven wave at the limit) along the waveguide. The possible waveguide mode triplets satisfying the conditions of synchronism are found. Three-wave resonant parametric and nonlinear interaction between waves with such characteristics leads to effective spectral transformation of the ULF radiation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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