Magnetic confinement

Fusion

Using magnetic fields to hold plasma.

Magnetic confinement fusion traps charged particles on magnetic field lines inside devices such as tokamaks and stellarators.

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Charged particles follow magnetic field lines. Tokamaks and stellarators twist those lines into a torus so plasma cannot leak out too quickly.

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Toroidal magnetic fusion device using plasma current.

Magnetic fusion device with 3D external coils.