title: Signal enhancement in the triple-quantum magic-angle spinning NMR of spins-3/2 in solids: the FAM-RIACT-FAM sequence.
abstract: We achieve a significant signal enhancement for the triple-quantum magic-angle spinning NMR of a spin-3/2 system, by using an amplitude-modulated radiofrequency field, followed by a selective 90 degrees pulse and a phase-shifted strong rf field, for the triple-quantum excitation, and an amplitude-modulated radiofrequency field for the conversion of triple-quantum coherence to observable single-quantum coherence. The experiment is demonstrated on the (87)Rb NMR of polycrystalline rubidium nitrate.
authors.affiliation: Department of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom. madhu@soton.ac.uk
authors.forename: P K
authors.initials: PK
authors.lastname: Madhu
authors.forename: M H
authors.initials: MH
authors.lastname: Levitt