Alfvén eigenmodes in tokamak discharges with reversed shear are theoretically studied taking into account the effects of finite Larmor radius. It is predicted that, similarly to the kinetic toroidal Alfvén eigenmodes in positive-shear discharges, a new branch of eigenmodes in reversed-shear discharges exists, called here the kinetic reversed-shear Alfvén eigenmodes.
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Коновалов et al. (2004) studied this question.