Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1994-09-02
1996-11-12
O'Shea, Sandra L.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324318, 324322, G01V 300
Patent
active
055743706
ABSTRACT:
A toroid cavity detection system for determining the spectral properties and distance from a fixed point for a sample using Nuclear Magnetic Resonance. The detection system consists of a toroid with a central conductor oriented along the main axis of the toroidal cylinder and perpendicular to a static uniform magnetic field oriented along the main axis of the toroid. An rf signal is inputted to the central conductor to produce a magnetic field perpendicular to the central axis of the toroid and whose field strength varies as the inverse of the radius of the toroid. The toroid cavity detection system can be used to encapsulate a sample, or the detection system can be perforated to allow a sample to flow into the detection device or to place the samples in specified sample tubes. The central conductor can also be coated to determine the spectral property of the coating and the coating thickness. The sample is then subjected to the respective magnetic fields and the responses measured to determine the desired properties.
REFERENCES:
patent: 4053856 (1977-10-01), Fisher et al.
patent: 5045793 (1991-09-01), Rathke
Klingler Robert J.
Rathke Jerome W.
Woelk Klaus
Glenn Hugh
Haynes Mack
Moser William R.
O'Shea Sandra L.
Smith Bradley W.
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