Quasi-Linear Interaction of Whistler-Mode Waves and Non-thermal Electrons

Details Quasi-Linear Interaction of Whistler-Mode Waves and Non-thermal Electrons Quasi-Linear Interaction of Whistler-Mode Waves and Non-thermal Electrons

May 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..16..249f&link_type=abstract

Astrophysics and Space Science, Volume 16, Issue 2, pp.249-273

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

In this investigation, we attempt to analyze the quasi-linear cyclotron instability (under the weak turbulence regime) for whistler-mode waves due to pitch angle anisotropy of nonthermal electrons. The motivation of this study is to explain the triggered discrete VLF emissions occurring in the terrestrial magnetosphere. The time evolution of the growth rate and the induced waves spectrum for a loss cone type of nonthermal electrons is analyzed numerically. The diffusion of particles in pitch angles due to quasilinear cyclotron instability is illustrated. It is shown that several major features of triggered VLF emissions can be explained by the stated instability. Some predictions of the theory is given and suggestions for further research are presented.

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