H. Zushi et al., SELF-ORGANIZATION MECHANISM OF THE PRESSURE PROFILE AT THE INTERNAL DISRUPTION IN HELIOTRON PLASMAS, Plasma physics and controlled fusion, 40(5), 1998, pp. 779-784
Using the soft x-ray tomographic analysis, the rapid change processes
of the plasma profile are investigated at the internal disruption and
following intermittent bursts. A relation between the coherent structu
re with a low mode number (m = 2) and the local profile gradient is st
udied. It is found that there is a hysteresis relation between these.
An explosive growth of the coherent mode and a functional dependence o
f the growth rate on the mode amplitude are also discussed.