Joule heating

Fusion

Heating by electrical resistance.

Joule (ohmic) heating is power dissipated as I²R. In tokamaks it heats plasma at low temperature but becomes ineffective as resistivity drops.

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External Heating

The word "tokamak" is of Russian origin and means "toroidal chamber and magnetic coils." This magnetic confinement system holds plasma in magnetic fields of toroidal shape. The first tokamak, the T-1, started operation in 1958 in Russia, and since then the greatest advances in th

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Glossary

Plasma

Ionized gas of charged particles.