Ray tracing of electrostatic waves in a hot plasma and its application to the generation of terrestrial myriametric radiation

Details Ray tracing of electrostatic waves in a hot plasma and its application to the generation of terrestrial myriametric radiation Ray tracing of electrostatic waves in a hot plasma and its application to the generation of terrestrial myriametric radiation

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..553h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, June 1988, p. 553-556.

Physics

8

Electromagnetic Radiation, Electrostatic Waves, Equatorial Regions, Ray Tracing, Terrestrial Radiation, Thermal Plasmas, Radio Transmission, Space Plasmas, Wave Propagation

Scientific paper

The first results from the program HOTRAY for ray tracing electrostatic and electromagnetic waves in a hot plasma are presented. The calculations are applied to the linear mode-conversion window theory for the generation of terrestrial myriametric radiation corresponding to a specific event observed by the DE-1 satellite. Results show that backward propagating electrostatic waves can refract in a density gradient normal to the magnetic field to become Z-mode waves and can have access to the radio window. During propagation the waves remain minimally damped. Variations of approximately 0.01 deg in the initial wave normal angle can result in a large difference in the transmitted wave intensities. However, if such variations do occur, waves from different locations can still access the radio window so that energy transfer to the conversion point remains efficient. Strong refraction of electrostatic waves at latitudes of greater than 1 deg show that the magnetic equator is the preferred location for mode conversion to take place.

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