Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma

Details Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10017221g&link_type=abstract

Journal of Geophysical Research, Volume 100, Issue A9, p. 17221-17230

Physics

Plasma Physics

16

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

Scientific paper

Parametric decays of large-amplitude electromagnetic ion cyclotron waves (EICW) due to a minor O+ ion component in the magnetosphere are studied. It is shown that the presence of O+ ions leads to a number of new wave couplings which in turn lead to new instabilities. Some couplings involve sound waves carried mainly by the O+ ions, and a sideband EICW which has a resonance at the O+ ion gyrofrequency. These are decay instabilities which can lead to O+ heating through Landau damping and/or resonance absorption. There is also a modulational instability involving two sideband EICW, one propagating forward and the other propagating backward relative to the external magnetic field. These waves can also transfer energy to the O+ ions through resonance absorption. The other branches of the dispersion relation, namely, the He+ and proton branch, have additional decay instabilities (Gomberoff et al., 1995) due to the presence of a minor O+ ion component. It is also shown that in the fluid description, the decays to sound waves associated with the minority heavy ion species have growth rates comparable to, or even larger than, the decays to the acoustic branch corresponding to the majority proton species.

Affiliated with

Also associated with

No associations

Rating

Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma 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 Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parametric decays of electromagnetic ion cyclotron waves in a H+-He+-O+ magnetosphericlike plasma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-828745