Energy of auroral electrons and Z mode generation

Details Energy of auroral electrons and Z mode generation Energy of auroral electrons and Z mode generation

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9512149k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 12149-12155. Research supported by the Southwest Res

Physics

4

Auroral Irradiation, Electron Density (Concentration), Electron Plasma, High Energy Electrons, Cyclotron Frequency, Electron Emission, Electron Flux Density, Magnetohydrodynamic Stability

Scientific paper

The present consideration of Z-mode radiation generation, in light of observational results indicating that the O mode and second-harmonic X-mode emissions can prevail over the X-mode fundamental radiation when suprathermal electron energy is low, gives attention to whether the thermal effect on the Z-mode dispersion can be equally important, and whether the Z-mode can compete for the available free-energy source. It is found that, under suitable circumstances, the growth rate of the Z-mode can be substantial even for low suprathermal auroral electron energies. Growth is generally maximized for propagation perpendicular to the magnetic field.

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