Nuclear magnetic resonance spectrometer using split magnets
AssigneeHitachi, Ltd.
InventorsMichiya Okada, Tsuyoshi Wakuda, Shigeru Kakugawa, Hiroshi Morita, Katsuzo Aihara
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Abstract
In a nuclear magnetic resonance spectrometer, the shape of a detection coil is changed from a conventional cage type to a solenoid type of higher sensitivity. Accordingly, differing from the conventional superconductive magnet of multilayer air core solenoids, a superconductive magnet is right and left divided to split magnets for generating 11 T, preferably, 14.1 T in the horizontal direction, and the magnetic field uniformity is set to 0.001 ppm or less and the temporal stability is set to 0.001 ppm or less.
Claims4
A nuclear magnetic resonance spectrometer comprising:
- a solenoid type superconductive magnet having a horizontal winding axis, said superconductive magnet symmetrically arranged with respect to said horizontal winding axis;
- a low temperature container for cooling said superconductive magnet;
- a high-frequency transmission coil;
- and a solenoid type reception coil;
- wherein the low temperature container includes a first passage extending along a direction perpendicular to the horizontal winding axis for receiving a sample, and a second passage extending along a direction parallel to the horizontal winding axis as a path of a horizontal magnetic field.
A nuclear magnetic resonance spectrometer comprising:
- a chamber having a magnetic field for receiving a sample placed in the center of the magnetic field of said chamber;
- a solenoid type detection coil placed in the center of the magnetic field of said chamber;
- and a superconductive magnet disposed adjacent to the chamber for producing the magnetic field, wherein the superconductive magnet is divided into right and left portions, each portion having a horizontal winding axis;
- and a low temperature container for cooling said superconductive magnet, wherein the low temperature container includes a passage extending along a direction parallel to the horizontal winding axis of one of the portions of the superconductive magnet, as a path of a horizontal magnetic field;
- wherein:
- a direction of the magnetic field coincides with a horizontal direction;
- and the chamber is disposed in the low temperature container, and extends along a direction perpendicular to the horizontal winding axis of one of the portions of the superconductive magnet.
Dependencies are inferred from the claim text.