Patent ID: 7208954
Filing Date: 2007-04-24
Classification: G01R

Abstract:
1. An NMR analyzer comprising: 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 which is horizontally arranged such that a center axis of the coil system is in the horizontal direction, a cryostat housing said split-type multi-layer cylindrical superconducting coil system, a first room-temperature space formed penetrating through said cryostat along said center axis, a room-temperature shim coil system is arranged in said first room-temperature space to improve magnetic field homogeneity therein, a second room-temperature space formed penetrating through the cryostat and passing through the center of a split gap of said split-type multi-layer cylindrical superconducting coil system in a vertical direction, an NMR probe having a solenoid-type probe coil inserted in said second room-temperature space, and an electromagnetic wave-irradiating system for irradiating electromagnetic waves of wavelengths of not larger than 0.1 mm, and which is provided in said first room-temperature space.