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Title: Nuclear resonance tomography with a toroid cavity detector

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.
Inventors:
 [1];  [2];  [3]
  1. (Hinsdale, IL)
  2. (Lockport, IL)
  3. (Westmont, IL)
Issue Date:
OSTI Identifier:
870686
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Patent Number(s):
US 5574370
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
nuclear; resonance; tomography; toroid; cavity; detector; detection; determining; spectral; properties; distance; fixed; sample; magnetic; consists; central; conductor; oriented; main; axis; toroidal; cylinder; perpendicular; static; uniform; field; rf; signal; inputted; produce; strength; varies; inverse; radius; encapsulate; perforated; allow; flow; device; samples; specified; tubes; coated; determine; property; coating; thickness; subjected; respective; fields; responses; measured; desired; uniform magnetic; detection device; rf signal; central conductor; central axis; magnetic resonance; magnetic field; magnetic fields; field strength; nuclear magnetic; main axis; sample tube; sample tubes; spectral properties; toroid cavity; desired properties; coating thickness; field oriented; field perpendicular; cavity detector; /324/

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