RESIDUAL INTERACTIONS OF A QUADRUPOLAR NUCLEUS SUBJECT TO HIGH MAGNETIC-FIELD AND MAGIC-ANGLE-SPINNING

This is a theoretical study of nuclear magnetic resonance (NMR) spectr a to be obtained from a powder specimen spinning in the magnetic field . The nuclear system is assumed to be magnetically dilute and to exhib it a combination of electric quadrupole interaction, magnetic shieldin g anisotropy and heteronuclear spin coupling. Formulas are given for t he line positions and centreband linewidths of all transitions of the quadrupolar nucleus, in terms of scalar products of local interaction tensors. A number of unusual effects are predicted.