The interaction of an obliquely incident s-polarized plane electromagnetic wave at a warm moving magnetized plasma half-space

Details The interaction of an obliquely incident s-polarized plane electromagnetic wave at a warm moving magnetized plasma half-space The interaction of an obliquely incident s-polarized plane electromagnetic wave at a warm moving magnetized plasma half-space

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..33..147m&link_type=abstract

Astrophysics and Space Science, vol. 33, Mar. 1975, p. 147-163.

Astronomy and Astrophysics

Astronomy

6

Half Spaces, Incident Radiation, Magnetohydrodynamic Flow, Plasma Temperature, Plasma-Electromagnetic Interaction, Polarization Characteristics, Dielectrics, Electron Plasma, Field Strength, Magnetic Fields, Maxwell Equation, Permittivity, Phase Velocity, Plane Waves, Radio Astronomy, Reflected Waves

Scientific paper

The interaction of an s-polarized plane electromagnetic wave incident from a dielectric (or vacuum) region on a warm moving magnetized plasma half-space is considered. The external mag- netic field is assumed to be normal to the direction of the wave normal and the velocity of the moving medium. Using the first three moment equations, together with Maxwell's electromagnetic equations, we construct the constitutive relations in the rest frame of the moving medium. The constitutive relations are then transformed to the laboratory frame by invoking Minkowski's equations for the moving plasma medium, and the dispersion relation for the propagating ordinary mode in the moving medium is derived. Expressions are obtained for the phase and group velocities and the index of re- fraction for the ordinary mode, as also for power reflection and transmission coefficients. It is found that in contrast to the case of a cold magnetized plasma, the ordinary electromagnetic mode excited in the warm magnetoplasma medium gets modzfied due to the presence of an external magnetic field. In addition, the various reflection and transmission characteristics for a warm magnetoplasma depend on the velocity of the moving plasma as well as on the strength of the applied magnetic field, as against the case for a cold moving magnetized plasma. Numerical results on the reflection coefficient are presented for several values of the parameters characterizing the electron-plasma temperature, the velocity of the moving medium and the strength of the applied magnetic field

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