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tokamak |
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tokamakDevice used in nuclear-fusion research for magnetic confinement of plasma. It consists of a complex system of magnetic fields that confine the plasma of reactive charged particles in a hollow, doughnut-shaped container. The tokamak (an acronym from the Russian words for toroidal magnetic confinement) was developed in the mid-1960s by Soviet plasma physicists. It produces the highest plasma temperatures, densities, and confinement durations of any confinement device. tokamak [′täk·ə‚mak] (plasma physics) A device for confining a plasma within a toroidal chamber, which produces plasma temperatures, densities, and confinement times greater than that of any other such device; confinement is effected by a very strong externally applied toroidal field, plus a weaker poloidal field produced by a toroidally directed plasma current, and this current causes ohmic heating of the plasma. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Hydrocarbon molecules and their ion fragments are formed inside a tokamak in edge plasmas and near a divertor. Experiments at the Tokamak Fusion Test Reactor produced record power levels for magnetic confinement nuclear fusion (145: 12, 341, 381). Using a magnetically confined plasma made up of a half-and-half mixture of deuterium and tritium, the Tokamak Fusion Test Reactor (TFTR) generated a burst of 9 million watts of power, besting the previous record of 6. |
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