physics issue at present. It is found for the first time in tokamaks that an unstable tearing
mode with slowly rotating m/n= 2/1 helicity, where m/n represent poloidal/toroidal mode-
numbers, interacts with energetic-ions and results in amplitude-bursting/frequency-chirping
fishbone-like activities. Nonlinear hybrid kinetic-MHD simulations with M3D-K code prove
that the co-passing energetic-ions are responsible for the drive of tearing modes, and the …