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Tunneling and mode conversion of fast magnetosonic waves in the magnetospheres of Earth and Mercury

Part of: Present Achievements in SpacePlasmas Focus on Space Plasmas

Published online by Cambridge University Press:  10 December 2014

Yevgen O. Kazakov  and
Tünde Fülöp
Yevgen O. Kazakov*
Affiliation:
Laboratory for Plasma Physics, Royal Military Academy, LPP-ERM/KMS, TEC Partner, Brussels, BE-1000, Belgium
Tünde Fülöp
Affiliation:
Department of Applied Physics, Chalmers University of Technology, Göteborg, SE-41296, Sweden
*
†Email address for correspondence: [email protected]
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Abstract

Narrow-band linearly polarized waves, having a resonant structure and a peak frequency between the local cyclotron frequency of protons and heavy ions, have been detected in the magnetospheres of Earth and of Mercury. Some of these wave events have been suggested to be driven by linear mode conversion (MC) of the fast magnetosonic waves (FWs) at the ion–ion hybrid (IIH) resonances. Since the resonant IIH frequency is linked to the plasma composition, solving the inverse problem allows one to infer the concentration of the heavy ions from the measured frequency spectra. In this paper, we identify the conditions when the MC efficiency is maximized in the magnetospheric plasmas and discuss how this can be applied for estimating the heavy ion concentration in the magnetospheres of Earth and Mercury.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 2 , April 2015 , 325810201
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Copyright
Copyright © Cambridge University Press 2014 

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