Clarifying the fusion plasma confinement improvement mechanism

Scientists, as a result of measuring electric potential of JFT-2M tokamak plasma using the "Heavy Ion Beam Probe" and analyzing experimental data, have achieved the important result of clarifying the confinement improvement mechanism, which had been a riddle for the past thirty years. This confinement improvement mode is being used as the standard operation mode in the International Thermonuclear Experimental Reactor (ITER).