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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 31, issue 10
Ann. Geophys., 31, 1645–1652, 2013
https://doi.org/10.5194/angeo-31-1645-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 31, 1645–1652, 2013
https://doi.org/10.5194/angeo-31-1645-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 07 Oct 2013

Regular paper | 07 Oct 2013

Ray tracing model of the auroral kilometric radiation generation in the 3-D plasma cavity

T. M. Burinskaya T. M. Burinskaya
  • Space Research Institute of RAS, Profsoyuznaya str. 84/32, Moscow, 117997, Russian Federation

Abstract. Propagation and amplification of the auroral kilometric radiation (AKR) in a three-dimensional plasma cavity is investigated using the approximation of the geometrical optics, and taking into account both the slightly relativistic electrons propagating inside a cavity and the background cold electrons. It is shown that the global magnetic field inhomogeneity plays a key role in a wave escape from a thin plasma cavity. The main contribution to the AKR spectrum is made by waves initially generated with the component of group velocity directed to the Earth and with the optimum relationship between the wave vector components, controlling the value of the linear grow rate and duration of the ray lifetime inside a source.

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