Quasicoherent Oscillations Induced by Nonthermal Electrons during Magnetic Reconnection in the T-10 Tokamak

Small-scale quasicoherent oscillations of the x-ray emissivity and magnetic field perturbations are observed in the T-10 tokamak during abrupt growth of the m = 2, n = I magnetohydrodynamic modes at the density limit disruption. Analysis indicates a possible link between the small-scale oscillations and nonthermal electron beams induced around the X points of the m = 2, n = 1 magnetic island during reconnection of magnetic field lines at the disruption instability.