Relaxation phenomena in helical plasmas induced by nonlinear pressure driven instabilities

We execute nonlinear simulations of plasma relaxation phenomena that are induced by pressure driven instabilities, for the purpose of finding non-Taylor type relaxation, A Heliac type helical plasma configuration is studied. Although strong fluctuation is exited, it's not so serious as to cause a major disruption. A process is found in which the plasma spontaneously relaxes to a finite beta state where all the modes once excited become stable.