Continuous wave radiofrequency irradiation

In continuous wave (CW) NMR, one of the problems is the separation of the Overhauser effect from the coherent effects of radiofrequency (RE) irradiation. For example, even at very low RE field ( 0.02 Hz) CW double resonance experiments, the observed intensities can only be explained by including coherent effects, as splitting or broadening of directly connected transitions. In higher power experiments, the lines are split and several coherent... 

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