Medical Definition of Magnetic island

1. A magnetic topology near a rational surface where the flux surface is broken up into tubes which are not connected with each other poloidally. Islands may develop in non-ideal magnetohydrodynamic fluids, where electrical resistance becomes important and magnetic field lines are no longer frozen-in to the fluid. Then magnetic tearing and reconnection may allow field lines to link up and form islands with a local magnetic axis in a narrow region near a rational surface. (See also magnetohydrodynamic, frozen-in law). The development of islands may be caused by a small perturbation, whether internal or external, whether deliberate or accidental, and is usually associated with enhanced transport (i.e., reduced confinement). The centres of the islands are magnetic O-points, while the boundaries between islands are marked by X-points. (09 Oct 1997)



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Lexicographical Neighbors of Magnetic Island

magnetic field strength
magnetic fields
magnetic flux
magnetic flux densities
magnetic flux density
magnetic flux unit
magnetic force
magnetic head
magnetic implant
magnetic inclination
magnetic induction
magnetic inertia
magnetic ink
magnetic intensity
magnetic iron-ore
magnetic island (current term)
magnetic lens
magnetic levitation
magnetic levitation train
magnetic line of force
magnetic mach number
magnetic medium
magnetic meridian
magnetic mine
magnetic moment
magnetic monopole
magnetic needle
magnetic north
magnetic permeability
magnetic poetry

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