Bi-chambered magnetic igloo

摘要

A magnetic field source that produces a stepped field of greater magnitude than the remanence of the magnetic material used to construct it. The source is basically a magnetic igloo comprised of two hemispheres having different cavity flux value that are separated by a passive ferromagnet slab. The hemispheres are positioned such that they share the same radial center point. The slab has a predetermined thickness and a tunnel of predetermined radius passing through its center along the radial center point of said hemispheres such that the flux in the cavity of the hemisphere abruptly changes when passing from the first hemisphere flux to the second.