Wire member and method of fabricating same
First Claim
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1. A wire member for use in a detection coil that detects an NMR (nuclear magnetic resonance) signal from a sample, said wire member comprising:
- at least one first wire component made of a first metal having a high electrical conductivity;
at least one second wire component made of a second metal having a magnetic susceptibility opposite in sign to magnetic susceptibility of said first wire component, said second wire component disposed inside said first wire component; and
a thin film less than about 1 micron thick made of a third metal, said third metal having a magnetic susceptibility opposite in sign to a total magnetic susceptibility of said first and second wire components,wherein said first wire component has a tubular shape and holds said second wire component therein, and wherein said thin film is formed on a surface of said first wire component.
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Abstract
A wire member adapted to be used in a detection coil of an NMR spectrometer'"'"'s probe. The wire member has a sleeve made of a copper tube having a high electrical conductivity, strands made of platinum, and a thin film of gold or rhodium formed on the surface of the sleeve by plating. The strands are mounted inside the sleeve and have a cross section to cancel the magnetic susceptibility due to the sleeve. The thin film cancels the total magnetic susceptibility of the sleeve and strands.
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Citations
3 Claims
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1. A wire member for use in a detection coil that detects an NMR (nuclear magnetic resonance) signal from a sample, said wire member comprising:
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at least one first wire component made of a first metal having a high electrical conductivity; at least one second wire component made of a second metal having a magnetic susceptibility opposite in sign to magnetic susceptibility of said first wire component, said second wire component disposed inside said first wire component; and a thin film less than about 1 micron thick made of a third metal, said third metal having a magnetic susceptibility opposite in sign to a total magnetic susceptibility of said first and second wire components, wherein said first wire component has a tubular shape and holds said second wire component therein, and wherein said thin film is formed on a surface of said first wire component. - View Dependent Claims (2, 3)
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Specification