METHOD OF OPERATING A NUCLEAR MAGNETIC RESONANCE SPECTROMETER

摘要

The spectrometer has a sample comprising two types of heteronuclei. A sequence of radio-frequency pulses and delay periods are applied to the two nuclei such that the heteronuclear scaler coupling interactions are allowed to evolve. The pulses have two different radiofrequencies corresponding to the two different types of nuclei. The pulses are applied to two different coils each of which provides an inhomegeneous radio-frequency field. The two coils generate separate but overlapping sensitive volumes for each species so that a significant signal intensity will be obtained from sample region where the two volumes overlap.