Nuclear magnetic resonance pick-up circuit for control of resona

Details Nuclear magnetic resonance pick-up circuit for control of resona Nuclear magnetic resonance pick-up circuit for control of resona

1977-02-22

1978-06-06

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 05R, G01R 3308

Patent

active

040939103

ABSTRACT:
In a nuclear magnetic resonance spectrometer, the probe structure includes an analysis channel RF magnetic coil disposed in RF magnetic field exchanging relation with a sample of gyromagnetic resonators under analysis for detecting nuclear magnetic resonance of the sample. A control group of nuclear magnetic resonators is also disposed in the sample region and nuclear magnetic resonance of the control group is excited and detected by a second RF magnetic coil. The control RF coil is formed and arranged relative to the sample RF magnetic coil to minimize cross coupling between the sample and control channels. In a preferred embodiment, the control RF magnetic coil is coaxially disposed of the analysis RF coil and is further segmented into a pair of axially spaced portions disposed at opposite ends of the analysis coil and connected in magnetic field bucking relation relative to each other so that the RF magnetic field generated by the control RF coil cancels in the region of the analysis RF coil.

REFERENCES:
patent: 2856579 (1958-10-01), Packard
patent: 3075156 (1963-01-01), Anderson et al.

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