A COMPACT, HIGH-TEMPERATURE NUCLEAR-MAGNETIC-RESONANCE PROBE FOR USE IN A NARROW-BORE SUPERCONDUCTING MAGNET

We report the design of a nuclear magnetic resonance (NMR) probe that can be used in narrow-bore superconducting solenoids for the observation of nuclear induction at high temperatures. The probe is compact, highly sensitive, and stable in continuous operation at temperatures up to 1050°C. The essential feature of the probe is a water-cooled NMR coil that contains the sample-furnace; this design maximizes sensitivity and circuit stability by maintaining the probe electronics at ambient temperature. We demonstrate the design by showing high temperature 17O NMR spectra and relaxation measurements in solid barium bismuth oxide and yttria-stabilized zirconia.