Electromagnetic radiation from line sources interacting with a moving magnetoplasma half-space

Details Electromagnetic radiation from line sources interacting with a moving magnetoplasma half-space Electromagnetic radiation from line sources interacting with a moving magnetoplasma half-space

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jap....47.4854m&link_type=abstract

Journal of Applied Physics, vol. 47, Nov. 1976, p. 4854-4858. Research supported by the Department of Atomic Energy of India.

Astronomy and Astrophysics

Astronomy

3

Electromagnetic Radiation, Half Spaces, Plasma-Electromagnetic Interaction, Cold Plasmas, Collisionless Plasmas, Electric Fields, Electron Plasma, Far Fields, Magnetic Fields, Plasma Density, Radio Astronomy, Saddle Points, Spacecraft Reentry, Electromagnetic Radiation Interactions With Plasma, Plasma Interactions With Antennas, Plasma-Filled Waveguides

Scientific paper

The problem of electromagnetic radiation from the electric and the magnetic line sources interacting with a cold collisionless moving magnetoplasma half-space has been treated. The ambient magnetic field lies parallel to the line source and is oriented normal to the direction of medium motion. For the configuration, the E and H modes become independent, being capable of becoming excited, respectively, by a magnetic and an electric line source. Using the saddle-point method of integration, we have obtained the far-zone radiation fields and the radiation patterns for both line sources. It is found that the fields radiated by an electric line source remain unaffected by the presence of an ambient magnetic field. Numerical results for the far-zone radiation pattern, referring to a magnetic line source, are presented for several values of the parameters characterizing the electron-plasma density, the local magnetic field, and the velocity of the moving medium.

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