Sw. Ding et Ca. Mcdowell, Application of Floquet theory to quadrupolar nuclear spin-5/2 nuclei in solids undergoing sample rotation, MOLEC PHYS, 95(5), 1998, pp. 841-848
The usefulness of the Floquet formalism combining perturbation expansion wi
th canonical transformations is demonstrated for investigating the nuclear
magnetic resonance (NMR) spectroscopy of spin-5/2 quadrupolar nuclear spins
in solids undergoing mechanical rotations. This formalism provides better
computing efficiency than the direct multi-step method, especially for long
evolution times, and offers many physical insights that are unattainable f
rom pure numerical calculations. The analysis procedures and the advantages
of this approach are shown by applying the method to a variety of NMR expe
riments involving spin-5/2 systems ranging from simple single-pulse magic-a
ngle spinning, to nutation, spin-locking, cross-polarization, multi-quantum
coherences and heteronuclear correlation experiments.