abstract:The ballooning instability, or ballooning mode, is a form of plasma instability seen in tokamak fusion power reactors. The name refers to the shape and action of the instability, which acts like the elongations formed in a balloon when it is squeezed.
Previouswork on driftballooninginstability in the equatorial region has been extendedto include a decelerated nonstationaryflowandto consider the off equatorregions.