Ensemble of single quadrupolar nuclei in rotating solids: sidebands in NMR spectrum.
A novel way is proposed to describe the evolution of nuclear magnetic polarization and the induced NMR spectrum. In this method, the effect of a high-intensity external static magnetic field and the effects of proper Hamiltonian left over interaction components, which commute with the first, are taken into account simultaneously and equivalently. The method suits any concrete NMR problem. This brings forth the really existing details in the registered spectra, evoked by Hamiltonian secular terms, which may be otherwise smoothed due to approximate treatment of the effects of the secular terms. Complete analytical expressions are obtained describing the NMR spectra including the rotational sideband sets of single quadrupolar nuclei in rotating solids.
Kundla
Enn
E
National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia. enn@kbfi.ee