抄録
Fast frequency sweeping (fast FS) mode in a JT-60U plasma is investigated with particle-magnetohydrodynamic hybrid simulation. A new kind of energetic particle mode (EPM) is found near the plasma center at a frequency close to the central frequency of the fast FS mode. Frequency sweeping close to that of the fast FS mode takes place. The ratio of the mode damping rate to the linear growth rate is consistent with spontaneous hole-clump pair creation.
