AMPLIFICATION OF RADIATION DAMPING IN A 600-MHZ NMR SPECTROMETER - APPLICATION TO THE STUDY OF WATER-PROTEIN INTERACTIONS

A new application of a recently developed electronic radiation-damping (RD) control system is presented. It is possible to amplify radiation damping so as to make the water magnetization return back to its equi librium direction in a time shorter than the characteristic RD time. C ertain types of experiments involving radiation damping as a selective inversion pulse can be significantly improved by this new method. Mor eover, amplification of RD is shown to improve water suppression and c onsequently the dynamics of 2D NOESY experiments on proteins.