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An NMR thermometer for cryogenic magic-angle spinning NMR: the spin-lattice relaxation of 127I in cesium iodide

Sarkar, Riddhiman, Concistre, Maria, Johannessen, Ole G., Beckett, Peter, Denning, Mark, Carravetta, Marina, al-Mosawi, Maitham, Beduz, Carlo, Yang, Yifeng and Levitt, Malcolm H. (2011) An NMR thermometer for cryogenic magic-angle spinning NMR: the spin-lattice relaxation of 127I in cesium iodide Journal of Magnetic Resonance, 212, (2), pp. 460-463. (doi:10.1016/j.jmr.2011.08.021).

Record type: Article

Abstract

The accurate temperature measurement of solid samples under magic-angle spinning (MAS) is difficult in the cryogenic regime. It has been demonstrated by Thurber et al. (J. Magn. Reson., 196 (2009) 84-87) [10] that the temperature dependent spin-lattice relaxation time constant of 79Br in KBr powder can be useful for measuring sample temperature under MAS over a wide temperature range (20–296 K). However the value of T1 exceeds 3 min at temperatures below 20 K, which is inconveniently long. In this communication, we show that the spin-lattice relaxation time constant of 127I in CsI powder can be used to accurately measure sample temperature under MAS within a reasonable experimental time down to 10 K.

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Published date: October 2011
Keywords: solid state NMR, magic angle spinning (MAS), temperature measurement
Organisations: Chemistry, Engineering Science Unit

Identifiers

Local EPrints ID: 337238
URI: http://eprints.soton.ac.uk/id/eprint/337238
PURE UUID: 4e39ec1e-c69e-4c91-855e-65f6eded7558
ORCID for Yifeng Yang: ORCID iD orcid.org/0000-0002-3874-6735

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Date deposited: 20 Apr 2012 10:43
Last modified: 18 Jul 2017 06:04

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Contributors

Author: Riddhiman Sarkar
Author: Maria Concistre
Author: Ole G. Johannessen
Author: Peter Beckett
Author: Mark Denning
Author: Maitham al-Mosawi
Author: Carlo Beduz
Author: Yifeng Yang ORCID iD

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