The first experimental discovery of the propagation of plasma turbulence

Scientists applied the ‘heat pulse modulation method’ in the magnetic island produced intentionally in the tokamak ‘Doublet III-D.’ Temperature gradient inherent in the magnetically confined plasma causes turbulence while there is no turbulence in the magnetic island because of the absence of the gradient. That the turbulence propagates has now been demonstrated for the first time by investigating turbulence in the magnetic island.