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Medicine(medicine)

spheromak (medicine) and alizari (medicine)


spheromak (medicine)


spheromak
<radiobiology> A compact torus with comparable toroidal and poloidal magnetic fields. The plasma is roughly spherical and is usually surrounded by a close-fitting conducting shell or cage. Both the poloidal and toroidal magnetic fields are generated by plasma currents. There are no toroidal field coils linking the plasma through the central plasma axis. External force is supplied by poloidal field coils outside the plasma separatrix. The resulting configuration is approximately a force-free magnetic field. The spheromak machine geometry can be simpler than a tokamak, but the close-fitting wall is a source of impurities and the current cannot be inductively driven. After early experiments failed to achieve a reasonable beta, interest has ebbed. The spheromak can also be considered as the low-aspect-ratio limit of the tokamak.

See: compact torus.


alizari (medicine)


alizari


The madder of the Levant.

Origin: Perh. Fr. Ar. 'aarah juice extracted from a plant, fr. 'aara to press.

Source: Websters Dictionary