Field modifying elements for an electromagnet having a substanti

Details Field modifying elements for an electromagnet having a substanti Field modifying elements for an electromagnet having a substanti

1986-01-21

1987-04-07

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

336211, 324318, 335299, H01F 300

Patent

active

046564497

ABSTRACT:
An electromagnet having a ferromagnetic core comprising at least one substantially C-shaped yoke terminating in pole pieces (1,2) with opposed pole faces (7) separated by an air gap in which a magnetic field suitable for an NMR imaging process is, in use, produced, the core comprising stacked laminae (6) of electrical sheet steel, which are bent around the C about axes perpendicular to the plane of the C, and at least some of which are spaced apart at the pole pieces to accommodate between the spaced laminae field modifying elements (5,8) which are arranged to improve the homogeneity and/or confinement of the magnetic field in the air gap.

REFERENCES:
patent: 4553122 (1985-11-01), Young

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