SELECTIVE HOMONUCLEAR HARTMANN-HAHN TRANSFER USING 2 COHERENT RF CHANNELS - APPLICATION TO RELAXATION-TIME MEASUREMENTS

A method to implement selective homonuclear Hartmann-Hahn transfer by using two coherent r.f. channels has been developed, This new method d oes not require complex pulse sequences, When this approach is combine d with selective relaxation measurements, the proton relaxation times (T-1, T-2 and T-1 rho) of individual protons can be determined even wh en the signals are hidden under other resonances, An example of the us e of this method for the analysis of ribonuclease H is given.