Ferromagnetic spatial shielding for the superconducting high field magnet of an NMR spectrometer
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United States of America Patent
Stats
-
Jan 9, 2001
Grant Date -
N/A
app pub date -
Sep 12, 1997
filing date -
Sep 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Magnetic shielding for a superconducting magnet coil, arranged in the inside of a cryostat and having a vertical z-axis for generating a static magnetic field of a homogeneity of <10.sup.-7 in the measuring volume of an NMR spectrometer, wherein the shielding comprises spatial shielding at a distance from the cryostat in the form of a ferromagnetic shielding plate arranged above the cryostat, is characterized in that the shielding plate comprises either areas outside of the z-axis having a final curvature in the downward direction or plane surfaces which are inclined with respect to the horizontal line at an angle 10.degree.
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