Modulational instability of electromagnetic electron-cyclotron wave packets in the magnetosphere with non-Maxwellian electron distribution

Journal Article · Mon Sep 15 00:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2978192· OSTI ID:21269062

Abbasi, H ^[1]; Hakimi Pajouh, H ^[2]

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1. Faculty of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of)
2. Department of Physics, Alzahra University, Tehran 19834 (Iran, Islamic Republic of)

The satellite observations of the magnetosphere in the low-frequency ion dynamics revealed several facts: (1) localized structures for electric field signal parallel to the magnetic field; (2) anisotropy for the electron velocity distribution such that T{sub perpendicular}<<T{sub parallel}; and (3) non-Maxwellian distribution function for the electrons. Based on these evidences, a nonlinear model is presented to develop the electromagnetic electron-cyclotron (EMEC) theory to the non-Maxwellian plasmas. Then, the modulational instability analysis of EMEC waves is investigated.

• OSTI ID: 21269062
• Journal Information: Physics of Plasmas, Vol. 15, Issue 9; Other Information: DOI: 10.1063/1.2978192; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISTRIBUTION FUNCTIONS
EARTH MAGNETOSPHERE
ELECTROMAGNETIC RADIATION
ELECTRONS
NONLINEAR PROBLEMS
PLASMA INSTABILITY
WAVE PACKETS