A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic plasmas

Details A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic plasmas A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic plasmas

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1349f&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A11, pp. SMP 7-1, CiteID 1349, DOI 10.1029/2002JA009273

Physics

Plasma Physics

10

Space Plasma Physics: Waves And Instabilities, Magnetospheric Physics: Planetary Magnetospheres (5443, 5737, 6030), Planetology: Fluid Planets: Magnetospheres (2756), Magnetospheric Physics: Mhd Waves And Instabilities

Scientific paper

We study low-frequency waves and instabilities in homogeneous, collisionless plasmas whose thermal pressure is gyrotropic, i.e., characterized by two distinct components, P⊥ and P∥, perpendicular and parallel, respectively, to the magnetic field. In order to obtain the complete dispersion relation of low-frequency waves, we need equations of state for P⊥ and P∥. After showing that these equations differ from the widely used double-adiabatic, or CGL, magnetohydrodynamic (MHD) equations, we derive their correct expressions by resorting to the Vlasov equation. We thus obtain a dispersion relation, which is no longer strictly MHD: in addition to the three standard (fast, slow, and Alfvén) modes from double-adiabatic MHD theory, our dispersion relation also contains the mirror mode from kinetic theory. We examine the physical characteristics and stability properties of each of these four modes and provide numerical solutions for their frequency and growth/decay rate, both for simple proton-electron plasmas and for multispecies plasmas.

Affiliated with

Also associated with

No associations

Rating

A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic 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 A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic plasmas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A mixed magnetohydrodynamic-kinetic theory of low-frequency waves and instabilities in homogeneous, gyrotropic plasmas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-949845