NMR-SPECTROSCOPY WITH RADIAL PULSES - P-TYPE AND N-TYPE SELECTION COSY

A novel NMR probe geometry is introduced and shown to have advantages for coherence pathway selection. The probe can generate rf fields with two distinct symmetries, a normal homogeneous rf field, and a ''radial'' rf field. One field can be used to both excite and detect the spin magnetization while the other is used to introduce spatially varying coherence pathway transformations. The detection process will select only that magnetization that preserves the symmetry of the detection coil. A single acquisition quadrature-detected COSY experiment is shown as an example of this principle.