Test head for NMR spectrometer
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United States of America Patent
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Jul 25, 1989
Grant Date -
N/A
app pub date -
Jul 27, 1988
filing date -
Aug 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A test head for NMR spectrometers comprises an rf coil mounted on a carrier pipe and a shielding which extends over at least one section of two parallel conductors extending in the axial direction of the carrier pipe. In order to improve the effect of shielding, the shielding is connected, in an electrically conductive manner, to a turn section of the rf coil which contains a cold point. The shielding is thereby maintained at a fixed neutral potential, relative to the rf voltage supplied, with the result that no fields impairing the measuring accuracy and resolution of the spectrometer can any longer exist in the shielded area. The shielding may be connected directly to one turn section of the coil, for example by soldering.
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