Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1984-05-01
1988-01-26
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
335213, 128653, G01R 3320
Patent
active
047219149
ABSTRACT:
An apparatus for unilaterally producing a substantially homogeneous magnetic field. The apparatus includes two circular electromagnet coils, a small coil and a large coil, which are coaxial with one another and which are separated by a distance equal to one-half the difference in the radius of the two coils. By appropriate selection of electrical currents, which are passed through the coil in opposite directions, a region of homogeneous magnetic field is formed. This region is centered on the common axis of the two coils, at a point on the axis which is at a distance from the small coil equal to one-half the radius of the small coil, and which is on the opposite side of the small coil from the large coil. The apparatus has particular application in the field of diagnostic medical NMR and other NMR applications.
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K. Kaminishi et al, Practical Method of Improving the Uniformity of Magnetic Fields Generated by Single and Double Helmholtz Coils, Rev. Sci. Instrum., 52(3), Mar. 1981, pp. 447-453.
Fukushima Eiichi
Rath Alan R.
Roeder Stephen B. W.
Eklund William A.
Gaetjens Paul D.
Hightower Judson R.
The United States of America as represented by the United States
Tokar Michael J.
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