| 摘要 |
A magnet assembly having a pair of substantially aligned, spaced apart first magnets having like poles facing each other; and one or more auxiliary magnets axially aligned with the first magnets such that all magnets in the assembly are axially aligned. A magnetic field of sufficient homogeneity to perform a nuclear magnetic resonance (NMR) process is generated in a working region laterally offset form the first and second magnets. An oscillating magnetic field generating assembly is provided for performing an NMR experiment and includes a set of electrical coils connected to an oscillating electrical source. The coils are arranged between the first magnets such that the magnetic field generated by the oscillating magnet field generating assembly is also sufficiently uniform within the working region to perform an NMR experiment. A shield of electrically conductive material is positioned adjacent to and laterally offset form the set of electrical coils whereby the magnetic field generated by the oscillating magnetic field generating means is asymmetrically offset from the axis of the first magnets.
|
