Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas

Details Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30e...4c&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 5, pp. 4-1, CiteID 1200, DOI 10.1029/2002GL016065

Physics

Plasma Physics

1

Magnetospheric Physics: Mhd Waves And Instabilities, Space Plasma Physics: Kinetic And Mhd Theory, Space Plasma Physics: Nonlinear Phenomena

Scientific paper

A theoretical model is proposed for the nonlinear saturation of high-m Alfvén-ballooning instabilities in magnetospheric plasmas. Here, m is the azimuthal wave number. In the present model, a broad spectrum of Alfvén waves nonlinearly generate ion-sound density perturbations; which, in turn, scatter the Alfvén turbulence toward lower frequencies. Balancing the linear instability growth rate with the nonlinear scattering (Landau damping) rate then yield the corresponding saturated spectrum, which tends to peak near the bottom of the eigenmode frequencies. The theory also gives estimates of wave amplitudes at saturation in reasonable agreement with satellite observations.

Affiliated with

Also associated with

No associations

Rating

Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear saturation of high-m Alfvén-ballooning modes in magnetospheric plasmas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-997563