Abstract
Magnetohydrodynamic (MHD) stability of an axisymmetric mirror device with long end-sections filled with a collisional plasma is studied. It is shown that unstable perturbations in such a system, if they exist, are localized at a distance ∼vA/Γ near the central cell (vA is the Alfvén velocity and Γ is the growth rate). Perturbations of the magnetic field do not penetrate into regions where plasma beta is greater than unity. Therefore, regions of weak magnetic field has a stabilizing effect on MHD-perturbations.
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