EFFECT OF SWEEP DIRECTION ON SIDE-BAND IN ADIABATIC DECOUPLING

The appearance of sidebands in adiabatic decoupling can be substantial ly reduced simply by matching the sweep rate and direction of adiabati c pulses with the evolution of different J couplings. Alternatively, a matched adiabatic defocusing pulse is applied just before the decoupl ing is turned on, providing an efficient means for complete suppressio n of sidebands. (C) 1997 Academic Press.