Nuclear magnetic resonance apparatus
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United States of America Patent
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Dec 3, 2002
Grant Date -
Jan 3, 2002
app pub date -
Jun 26, 2001
filing date -
Jun 26, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nuclear magnetic resonance apparatus including: a cup-shaped high-temperature superconductor 20 having a hollow cylindrical shape or portion cooled to not more than a superconducting transition temperature in a vacuum insulating container 22; and a detection coil 12 for detecting an NMR signal of a material 11 to be measured inserted into the hollow cylindrical portion 20a of the high-temperature superconductor. The high-temperature superconductor is magnetized in an axial direction, a static magnetic field is thereby generated in the hollow cylindrical portion in a cylinder axial direction, and the NMR signal of a material is detected by the detection coil and the existing spectrometer. A strong static magnetic field comparable to a conventional superconducting magnet is formed without using a refrigerant (liquid helium) essential for operating the conventional superconducting magnet, and a strength distribution of the static magnetic field is homogeneous.
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