Patent ID: 8736176

Claim:
A device for producing and/or confining a plasma, comprising: a chamber in the space of which the plasma is produced and/or confined, said chamber comprising a wall having a wall surface internal to the chamber and encompassing the space; and one or more assemblies for producing and/or confining plasma, each assembly being composed of at least one pair of joined magnets arranged end to end along an axial magnetisation direction, wherein the magnets of each pair have opposite magnetisation directions and wherein magnet ends having the same magnetic pole face each other at the junction between the magnets of each pair, each assembly being partially recessed in the wall of the chamber, such that the direction of magnetisation of all the magnets making up each assembly is substantially perpendicular to the wall surface and such that each assembly is substantially symmetrical with respect to the wall surface, the magnetic field lines not passing through the wall of the chamber.