Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1979-11-14
1981-06-30
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
336 60, H01F 500
Patent
active
042765293
ABSTRACT:
The invention relates to a magnet coil arrangement for generating a magnetic field which is homogeneous at least in its center, preferably for magnetic resonance spectroscopy. The arrangement consists of four flat ring coils whose coil planes extend perpendicularly to an axis of examination which extends through the coil centers. The coils are symmetrically arranged with respect to a point situated on this axis. By means of a magnetic coil arrangement of this kind, a magnetic field can be generated which extends in the direction of the axis of examination and rotationally-symmetrically with respect thereto and which, in comparison with the magnetic fields generated by means of known coil arrangements, has an improved homogeneity in the direction perpendicular to the axis of examination over a larger range which extends in the direction perpendicular to the axis of examination in the center of the magnetic coil arrangement.
REFERENCES:
patent: 4084209 (1978-04-01), Hilal et al.
Heinzerling Jurgen
Rieckeheer Rainer
Briody Thomas A.
Haken Jack E.
Harris George
Mayer Robert T.
U.S. Philips Corporation
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