Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1980-05-29
1983-02-15
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324320, G01N 2700
Patent
active
043743609
ABSTRACT:
A nuclear magnetic resonance diagnosis apparatus includes first members which generate an inhomogeneous magnetic field within which the object is placed, and second members which includes a member which is rotated mechanically within the field. A mechanical motion of the member continuously modifies the strength of the inhomogeneous magnetic field except for a sampling line on the axis of rotation. The sampling line is located to pass through the sampling point. The field strength on the sampling line is at a constant prescribed intensity. It is advantageous in actual practice to carry out the apparatus of the invention. The first members include a solenoid magnet of a supra-conductor with a central axis coinciding with the sampling line. The second members include a rotatably carried permanent magnet having a central axis of rotation on the central axis of the solenoid magnet. The magnetic field strength of predetermined magnitude or intensity occurs only at one point which is a given distance from the central point of the solenoid on the solenoid's central axis.
REFERENCES:
patent: 3287630 (1966-11-01), Gang
patent: 4015196 (1977-03-01), Moore
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