NMR field-cycling spectrometer in which the sample is conveyed on a circular path at a predetermined angular velocity
OwnerBrian P. Hillsinventor
Life of this patent
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Abstract
A field cycling spectrometer for making nuclear magnetic resonance measurements on an object conveys the object under analysis at predetermined angular velocity successively through a first, spatially characterized, constant magnetic field B0 and a second, spatially characterized, constant magnetic field Bs. Nuclear magnetic resonance signals are detected from the object after passing through the second field. The fields are preferably provided by a toroidal electromagnet having a first circumferential segment operable to maintain said first magnetic field level B0 therein and a second circumferential segment operable to maintain said second magnetic field level Bs therein.
Claims21
Apparatus for making nuclear magnetic resonance measurements on an object, comprising:
- means for conveying the object under analysis, at predetermined angular velocity, successively through a first, spatially characterized, constant magnetic field B0 and a second, spatially characterized, constant magnetic field Bs;
- and
- means for detecting nuclear magnetic resonance signals weighted with at least one nuclear magnetic resonance parameter from said object.
A method of making nuclear magnetic resonance measurements on an object under analysis, comprising the steps of:
- rotating the object at a first predetermined angular velocity about a point so that the object is repeatedly conveyed along a circular path, which circular path sequentially passes through a first magnet having a first, spatially characterized, constant field strength B0 and a second magnet having a second, spatially characterized, constant field strength Bs;
- and
- detecting nuclear magnetic resonance signals weighted with at least one nuclear magnetic resonance parameter from said object after at least part of said object passes through said second magnet.
Dependencies are inferred from the claim text.