Compensation of radiation damping during selective pulses in NMR spectroscopy

A wide variety of amplitude- or phase-modulated pulses, which are designed for selective excitation, inversion or refocusing, are severely perturbed b y radiation damping effects in the presence of a large macroscopic magnetis ation. A general method is presented to compensate for radiation damping du ring the application of selective rf pulses. This method, which has general applicability for any amplitude- or frequency-modulated rf pulse, is demon strated experimentally for inversion pulses. (C) 1999 Elsevier Science B.V. All rights reserved.