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Title: Stimulated ion Compton scattering instability of whistlers in plasmas

Abstract

The nonlinear interactions between magnetic field-aligned broadband whistler wave packets (hereafter referred to as whistlerons) and ion quasimodes in magnetized plasmas are considered. By treating the whistlerons as quasiparticles, their nonlinear propagation in a slowly varying medium supported by ion quasimode density perturbations is studied. A nonlinear dispersion relation within the framework of the wave-kinetic (for the whistlerons) and Vlasov (for the ion quasimodes) descriptions is derived. The dispersion relation admits a kinetic modulational instability. The growth rate of the latter is presented. The present result can improve our understanding of the nonlinear propagation of incoherent whistlers, which have been frequently observed in the Earth's magnetosphere as well as in laboratory plasmas.

Authors:
; ;  [1]
  1. Institut fuer Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)
Publication Date:
OSTI Identifier:
20860471
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 12; Other Information: DOI: 10.1063/1.2423251; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPTON EFFECT; DISPERSION RELATIONS; DISTURBANCES; EARTH MAGNETOSPHERE; IONS; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; NONLINEAR PROBLEMS; PLASMA; PLASMA INSTABILITY; QUASI PARTICLES; WAVE PACKETS; WHISTLERS

Citation Formats

Shukla, P. K., Shukla, Nitin, and Stenflo, L.. Stimulated ion Compton scattering instability of whistlers in plasmas. United States: N. p., 2006. Web. doi:10.1063/1.2423251.
Shukla, P. K., Shukla, Nitin, & Stenflo, L.. Stimulated ion Compton scattering instability of whistlers in plasmas. United States. doi:10.1063/1.2423251.
Shukla, P. K., Shukla, Nitin, and Stenflo, L.. Fri . "Stimulated ion Compton scattering instability of whistlers in plasmas". United States. doi:10.1063/1.2423251.
@article{osti_20860471,
title = {Stimulated ion Compton scattering instability of whistlers in plasmas},
author = {Shukla, P. K. and Shukla, Nitin and Stenflo, L.},
abstractNote = {The nonlinear interactions between magnetic field-aligned broadband whistler wave packets (hereafter referred to as whistlerons) and ion quasimodes in magnetized plasmas are considered. By treating the whistlerons as quasiparticles, their nonlinear propagation in a slowly varying medium supported by ion quasimode density perturbations is studied. A nonlinear dispersion relation within the framework of the wave-kinetic (for the whistlerons) and Vlasov (for the ion quasimodes) descriptions is derived. The dispersion relation admits a kinetic modulational instability. The growth rate of the latter is presented. The present result can improve our understanding of the nonlinear propagation of incoherent whistlers, which have been frequently observed in the Earth's magnetosphere as well as in laboratory plasmas.},
doi = {10.1063/1.2423251},
journal = {Physics of Plasmas},
number = 12,
volume = 13,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}