Thermal barrier for variable temperature NMR

Details Thermal barrier for variable temperature NMR Thermal barrier for variable temperature NMR

1984-03-02

1986-05-06

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3300

Patent

active

045874921

ABSTRACT:
An NMR system for obtaining high resolution spectroscopic measurements at a selected temperature includes gradient correcting means disposed in proximity to an NMR probe, for imposing desired gradients on the volume occupied by the sample within the probe. A heat exchange gas is impelled through a heat exchanger and then surrounds the sample to bring the sample to the desired temperature. A thermal barrier, inocuous to RF excitation and of relatively low magnetic susceptibility protects the gradient correcting means from drift due to heat exchange with the heat exchanging gas.

REFERENCES:
patent: 4180769 (1979-12-01), Gang
patent: 4240033 (1980-12-01), Anderson et al.

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