Linearized Oscillations in a Plasma

Gerald Schubert

jan. 1961 · Cornell Univ.

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DESCRIPTORS: (*Magnetohydrodynamics, *Plasma oscillation, **Plasma physics, Ionosphere, Gses, Dynamics, Gas ionization, Fluid flow, Quantum mechanics.) (Electric fields, Mag- netic fields, io waves, Wave transmission, Propagation, Electromagnetic waves, Micro waves, *Electromagnetic theory.) (Sound, Acoustics, Electrons, Ions, Velocity, Theoory, Damping, Vacuum systems, Atoms.) (ALGEBRA, Partial differential equations, Differential equations, Taylor's series, Equations.) Open--ended Terms: Magnetogasdynamics, MagnetoIonic Theory, Fluid Models. The posible modes of oscillation of a plasmaARE DETERMINED FROM THE LINEARIZED EQUATIONS OF THE TWO-FLUID MODEL. LINERIZION IS CARRIED OUT IN THE PRESENCE OF A STRONG STEADY MAGNETIC FIELD, AND ONLY WAVE PROPAGATION NORMAL TO THE MAGNETIC FIELD IS CONSIDERED. These equations determine the regimes of applicability for the single-f equations and the magnetoionic theory; and both theories are found to be special cases of the general equations. The linearized equations of the single-fluid model are used to investigate the interaction of a low frequency eleoagnetic wave with a semiinfinite plasma. The magneto-ionic theory is found to be a special case of the linezed two--fluid equations. (Author).