Computer Science – Numerical Analysis
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.3442m&link_type=abstract
(International Magnetospheric Symposium, La Trobe University, Melbourne, Australia, Nov. 1979.) Journal of Geophysical Research,
Computer Science
Numerical Analysis
3
Auroral Zones, Cerenkov Radiation, Electron Precipitation, Hiss, Radiant Flux Density, Wave Amplification, Diffusion Coefficient, Linearity, Maxwell-Boltzmann Density Function, Numerical Analysis, Radiation Distribution, Whistlers
Scientific paper
Amplified Cerenkov emission is discussed with particular emphasis on the back reaction of the hiss of precipitating electrons. It is emphasized that amplification occurs only if there is a peak in energy in the flux of precipitating electrons and that only electrons below this peak are important in generating hiss. It is shown that the primary effect of the back reaction, which is treated by using quasi-linear theory, is to distort the distribution below the peak in a way which tends to reduce the positive energy gradient. The implied intensity is estimated and compared with observed properties of hiss, and it is concluded that quasi-linear relaxation may play a significant role in determining the maximum intensity of the hiss.
Melrose Donald B.
White Stephen M.
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