2004 Volume 124 Issue 10 Pages 915-920
Ion kinetic effect on the low-n toroidal modes in Compact Torus (CT) plasmas such as Spherical Tokamak (ST), spheromak, Field-Reversed-Configuration and compact Reversed-Field-Pinch (RFP), was investigated by using different ion species. The experimental result that indicates ion kinetic stabilization of the low-n modes was obtained in the low q95 regime. It was clearly shown that the n=1 mode was stabilized in the FRC under the low S* regime (S*: averaged number of ion skin depth). The suppression of the n=2 mode activity in the low S* RFP plasma was also observed. In the high q95 (- 4) ST regime, all low-n (1-4) toroidal modes were stable in the both cases of the high S* and low S*.
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan