Accession Number:

AD0757901

Title:

Natural Generation of Electromagnetic Waves and Interactions with Media.

Descriptive Note:

Final rept. 1 Sep 69-31 Aug 72,

Corporate Author:

BANARAS HINDU UNIV VARANASI (INDIA) INST OF TECH

Personal Author(s):

Report Date:

1972-10-01

Pagination or Media Count:

210.0

Abstract:

The report describes in detail the electrical conductivity of the plasma, the effects of collisions, of static electric and magnetic fields, effects of plasma perturbations, the derivation of plasma conductivity from the Boltzmann equation, and non-linear aspects of plasma conductivity. In subsequent sections, the electromagnetic wave radiations from accelerated electrons are classified into four main processes such as cyclotron- and Doppler-shifted cyclotron radiation, Cerenkov and synchrotron radiation and compared with each other. The wave generation by the Cerenkov process, atmospheric Bremsstrahlung, Plasma oscillation, Ion acoustic waves, wave particle resonance and energization of charged particles are treated. Further work examines the heating of the electron gas by electric and magnetic fields, the role of pitch angle distribution in the heating mechanism and the heating of a magnetoplasma by oscillating fields. A section is devoted to the probing of inhomogeneous plasma by electromagnetic pulses and the propagation of a gaussian pulse through a plasma. The final section deals with antennas in weakly ionized plasma, the effects of plasma scattering on transmission range from satellites and the radiation from conical helix antennas aiding data transmission. Author

Subject Categories:

  • Atmospheric Physics
  • Plasma Physics and Magnetohydrodynamics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE