Plasma turbulence spreading by magnetic fluctuation reduces heat load on a fusion device wall

In order to achieve fusion power generation, it is necessary to confine and maintain high-temperature plasma in a magnetic field. To achieve this, the turbulence that causes the plasma temperature to drop and a large heat load on the inner walls of the device must be controlled. A research group has discovered that, in the Large Helical Device (LHD), when fluctuations are generated in the magnetic field confining the plasma, turbulence in the plasma propagates and the heat load on the inner walls of the device is significantly reduced. This has demonstrated new possibilities for controlling turbulence and heat load.

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