A first room-temperature space is formed penetrating through a cryostat
along a center axis of a split-type multi-layer cylindrical
superconducting coil system which has a ratio of the maximum empirical
magnetic field to the central magnetic filed of not larger than 1.3 and
is horizontally arranged such that the center axis of the coil is in the
horizontal direction, a room-temperature shim coil system is arranged in
said first room-temperature space to improve the homogeneity of the
magnetic field, a second room-temperature space is formed penetrating
through the cryostat and passing through the center of said split gap in
the vertical direction, and a sample to be measured and an NMR probe
having a solenoid-type probe coil are inserted in said second
room-temperature space. Further, the NMR analyzer has a new function
constituted by a system for irradiating and detecting the electromagnetic
waves having wavelengths of shorter than 0.1 mm.
