Eigenmode stability analysis of drift-mirror modes in nonuniform plasmas
- Author(s): Klimushkin, D. Yu.
- Chen, L.
- et al.
Published Web Locationhttps://doi.org/10.5194/angeo-24-2435-2006
Drift-mirror modes in a one-dimensional inhomogeneous model of the magnetosphere are studied by employing gyrokinetics, taking into account finite Larmor radius effects. A wave equation is derived which describes both the spatial structure of the modes, and its eigenvalue yields a growth rate of the mode. The finite Larmor radius effects are shown to raise the instability threshold especially for high-m waves, and lead to wave propagation across field lines.
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