A nuclear magnetic resonance (NMR) probe is offered which can minimize
positional shift of the detector portion caused by shrinkage of the
support post due to cooling of the detector portion. The NMR probe has a
vacuum-insulated container and the detector portion described above. The
container has a cylindrical portion inserted in a magnet. The detector
portion is made up of a detection coil and a tuning and matching circuit
that are placed within the container. The detector portion is cooled by a
cooling means such that NMR signals are detected with enhanced
sensitivity. This probe is characterized in that the detector portion is
mounted to the upper end surface or a side surface of the cylindrical
portion.
