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Signal enhancement in the triple-quantum magic-angle spinning NMR of spins-3/2 in solids: the FAM-RIACT-FAM sequence

Signal enhancement in the triple-quantum magic-angle spinning NMR of spins-3/2 in solids: the FAM-RIACT-FAM sequence
Signal enhancement in the triple-quantum magic-angle spinning NMR of spins-3/2 in solids: the FAM-RIACT-FAM sequence
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° 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 Rb-87 NMR of polycrystalline rubidium nitrate.
nuclear-magnetic-resonance, double frequency sweeps, quadrupolar nuclei, mas-nmr, sensitivity enhancement, amplitude-modulation, coherence transfer, i=3/2 nuclei, mqmas nmr, spectroscopy
150-155
Madhu, P.K.
d3e7accb-343e-4ad0-9ef2-56e505202bbb
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Madhu, P.K.
d3e7accb-343e-4ad0-9ef2-56e505202bbb
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3

Madhu, P.K. and Levitt, M.H. (2002) Signal enhancement in the triple-quantum magic-angle spinning NMR of spins-3/2 in solids: the FAM-RIACT-FAM sequence. Journal of Magnetic Resonance, 155 (1), 150-155. (doi:10.1006/jmre.2002.2508).

Record type: Article

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° 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 Rb-87 NMR of polycrystalline rubidium nitrate.

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More information

Published date: 2002
Keywords: nuclear-magnetic-resonance, double frequency sweeps, quadrupolar nuclei, mas-nmr, sensitivity enhancement, amplitude-modulation, coherence transfer, i=3/2 nuclei, mqmas nmr, spectroscopy

Identifiers

Local EPrints ID: 19816
URI: http://eprints.soton.ac.uk/id/eprint/19816
PURE UUID: 8645a571-f672-4044-af4b-bbe54a5a0715
ORCID for M.H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

Catalogue record

Date deposited: 21 Feb 2006
Last modified: 09 Jan 2022 03:05

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Contributors

Author: P.K. Madhu
Author: M.H. Levitt ORCID iD

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