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Optimisation of excitation schemes for (14)N overtone MAS NMR using numerically exact simulations

Brinkmann, Andreas and O'Dell, Luke A 2016, Optimisation of excitation schemes for (14)N overtone MAS NMR using numerically exact simulations, Solid state nuclear magnetic resonance, pp. 1-7, doi: 10.1016/j.ssnmr.2016.12.006.

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Title Optimisation of excitation schemes for (14)N overtone MAS NMR using numerically exact simulations
Author(s) Brinkmann, Andreas
O'Dell, Luke AORCID iD for O'Dell, Luke A orcid.org/0000-0002-7760-5417
Journal name Solid state nuclear magnetic resonance
Start page 1
End page 7
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-12-10
ISSN 0926-2040
1527-3326
Keyword(s) (14)N solid-state NMR
Composite pulses
Excitation pulses
Overtone spectroscopy
WURST pulses
Summary Numerically exact simulations of the (14)N overtone ((14)N(OT)) MAS NMR experiment are used to investigate the effects of the applied magnetic field strength as well as three types of excitation pulse. The results show that both the resolution and sensitivity of (14)N(OT) MAS NMR increase linearly with the applied static magnetic field strength. Standard RF excitation pulses are compared with frequency-swept WURST pulses as well as several composite pulses. WURST pulses are demonstrated to provide the largest bandwidths, while the direction of the frequency sweep is shown to be important when these pulses are used for the direct observation of (14)N(OT) signals. A composite pulse is shown to provide the most efficient excitation overall, but only when applied on resonance. WURST excitation pulses are therefore the best option when studying a sample with unknown (14)N NMR parameters.
Notes In press
Language eng
DOI 10.1016/j.ssnmr.2016.12.006
Field of Research 020401 Condensed Matter Characterisation Technique Development
0204 Condensed Matter Physics
0306 Physical Chemistry (Incl. Structural)
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2016, Elsevier Inc.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30090997

Document type: Journal Article
Collection: Institute for Frontier Materials
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