Nonlinear phenomena in RF wave propagation in magnetized plasma: A review

2015 ◽  
Author(s):  
Miklos Porkolab
Keyword(s):  
Wave Propagation ◽  
Magnetized Plasma ◽  
Nonlinear Phenomena

scholarly journals Magnetoacoustic Heating in Nonisentropic Plasma Caused by Different Kinds of Heating-Cooling Function

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Anna Perelomova
Keyword(s):  
Magnetic Field ◽  
Wave Propagation ◽  
Open System ◽  
Nonlinear Effects ◽  
Nonlinear Phenomena ◽  
Direct And Inverse Problems ◽  
Radiation Losses ◽  
Magnetoacoustic Waves ◽  
Magnetic Strength ◽  
Cooling Function

The nonlinear phenomena which associate with magnetoacoustic waves in a plasma are analytically studied. A plasma is an open system with external inflow of energy and radiation losses. A plasma’s flow may be isentropically stable or unstable. The nonlinear phenomena occur differently in dependence on stability or instability of a plasma’s flow. The nonlinear instantaneous equation which describes dynamics of nonwave entropy mode in the field of intense magnetoacoustic perturbations is the result of special projecting of the conservation equations in the differential form. It is analyzed in some physically meaningful cases; those are periodic magnetoacoustic perturbations and particular cases of heating-cooling function. A plasma is situated in the straight magnetic field with constant equilibrium magnetic strength which form constant angle with the direction of wave propagation. A plasma is initially uniform and equilibrium. The conclusions concern nonlinear effects of fast and slow magnetoacoustic perturbations and may be useful in direct and inverse problems.

Wave Propagation in a Moving Cold Magnetized Plasma

1980 ◽  
Vol 35 (3) ◽  
pp. 280-292
Author(s):  
Helmut Hebenstreit
Keyword(s):  
Wave Propagation ◽  
Magnetized Plasma ◽  
Magnetized Plasmas ◽  
Dispersion Equations

Abstract Polarization relations and dispersion equations are derived for media electrically anisotropic in the comoving frame. The obtained results are discussed mainly for cold magnetized plasmas, briefly for uniaxial dielectric crystals. Special directions of wave propagation are considered.

Introduction to high temperature plasma physics

1981 ◽  
Vol 300 (1456) ◽  
pp. 475-488 ◽  
Keyword(s):  
High Temperature ◽  
Plasma Physics ◽  
Magnetized Plasma ◽  
Nonlinear Phenomena ◽  
Wave Interactions ◽  
Temperature Plasma ◽  
Theoretical Concepts ◽  
Ionospheric Physics ◽  
High Temperature Plasma ◽  
Plasma State

Most of the matter in the Universe is in the plasma state. A plasma will be defined and the concepts of quasi-neutrality and Debye distance introduced. The subject has its historical roots in gas discharge, astrophysics and ionospheric physics. Key theoretical concepts were developed in the context of those subjects. However, only in the last two decades, under the pressures of the controlled thermonuclear and space exploration programmes, have these concepts been tested experimentally. The theory of collisions in plasma has special features owing to the Coulomb nature of the interaction. Magnetized plasma is a medium in which a rich variety of small signal waves can propagate. Charged particle—wave interactions lead to collisionless (Landau) damping and growth mechanisms. Finally, nonlinear phenomena in plasma can and do change its transport properties by orders of magnitude. Our lack of detailed understanding of these nonlinear phenomena applies equally to natural plasmas and to plasmas in both inertially and magnetically confined fusion systems. This feature provides the challenge and the fascination of high temperature plasma physics.

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