Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1989-05-02
1990-06-05
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
505844, 324320, G01R 3320
Patent
active
049317350
ABSTRACT:
In a magnetic resonance apparatus a system of concentric cylinders of superconductive material maintain an effective steady magnetic field in a measured space within the inner cylinder which field is very homogeneous and is, moreover, very constant in time without requiring a large electric power. In a particular embodiment a magnetic field cylinder produces a strong magnetic field, a stabilization cylinder within the magnetic field cylinder ensures a good homogeneity and stabilization of the effective magnetic field, while a screening cylinder provided outside the magnetic field cylinder reduces the external stray field of the system.
REFERENCES:
patent: 4636730 (1987-01-01), Bottomley
patent: 4642569 (1987-02-01), Hayes et al.
patent: 4689563 (1987-08-01), Bottomley et al.
patent: 4694254 (1987-09-01), Vatis et al.
patent: 4695802 (1987-09-01), Zijlstra
patent: 4736161 (1988-04-01), Prevot et al.
Bunk Paul B.
Overweg Johannes A.
Squire William
Tokar Michael J.
U.S. Philips Corporation
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