ABSTRACT
This chapter considers the problem of the magnetohydrodynamic stability of toroidal systems with an anisotropic plasma. This problem is of interest, in particular, in connection with fast-neutral injection and high-frequency heating. The chapter examines the perturbed pressure of such a plasma in terms of the perturbed radial plasma displacement. This allows one to find an explicit form of the small-amplitude oscillation equation and the potential-energy functional, and thereby to obtain starting equations for the modes. The chapter shows that the anisotropy effect looks like a renormalization of the magnetic well. The magnetic well deepens in the case when the longitudinal temperature is larger than the transverse temperature and becomes smaller in the opposite case. The analytical theory of interchange and ballooning modes in an anisotropic high-pressure plasma was developed.
