Wire member and method of fabricating same
AssigneeJEOL Ltd.
InventorsJun Kida, Ryoji Tanaka
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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 comprises 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.
Claims9
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 being disposed close and parallel to said first wire component;
- and
- a thin film made of a third metal formed on at least one surface of said first and second wire components, said third metal having a magnetic susceptibility opposite in sign to a total magnetic susceptibility of said first and second wire components.
A method of fabricating a wire member for use in a detection coil that detects an NMR signal from a sample, said method comprising the steps of:
- preparing at least one first wire component made of a first metal having a high electrical conductivity and 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;
- placing said first and second wire components close and parallel to each other;
- and
- forming a thin film of a third metal on at least one surface of said first and second wire components, said third metal having a magnetic susceptibility opposite in sign to a total magnetic susceptibility of said first and second wire components.
Dependencies are inferred from the claim text.