tokamak

tokamak
/toh"keuh mak', tok"euh-/, n. Physics.
a type of experimental nuclear fusion reactor in which a plasma of atoms circulates in a toroidal tube and is confined to a narrow beam by an electromagnetic field.
[1960-65; < Russ tokamák, acronym from toroidál'naya kámera s aksiál'nym magnítnym pólem toroidal chamber with an axial magnetic field]

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Device 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.

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Universalium. 2010.

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  • tokamak — [tō′kə mak΄] n. [< Russ acronym for a “toroidal magnetic chamber”] a reactor designed to control nuclear fusion in a plasma of ions and electrons inside a doughnut shaped, or toroidal, magnetic bottle …   English World dictionary

  • Tokamak — A tokamak is a machine producing a toroidal magnetic field for confining a plasma. It is one of several types of magnetic confinement devices, and it is one of the most researched candidates for producing controlled thermonuclear fusion power.… …   Wikipedia

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