Abstract
Normal nuclear magnetic resonance (NMR) probes cannot be used to make high frequency resolution measurements in a cryogenic environment because they lose their frequency resolution when the liquid sample in the probe freezes. A gaseous 3He NMR probe, designed and constructed to work naturally in such cryogenic environments, is demonstrated at 4.2 K and 5.3 T to have a frequency resolution better than 0.4 ppb. As a demonstration of its usefulness, the cryogenic probe is used to shim a superconducting solenoid with a cryogenic interior to produce a magnetic field with a high spatial homogeneity and to measure the magnetic field stability.
Original language | English (US) |
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Article number | 083107 |
Journal | Review of Scientific Instruments |
Volume | 90 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1 2019 |
ASJC Scopus subject areas
- Instrumentation