An NMR thermometer for cryogenic magic-angle spinning NMR: the spin-lattice relaxation of 127I in cesium iodide
An NMR thermometer for cryogenic magic-angle spinning NMR: the spin-lattice relaxation of 127I in cesium iodide
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.
solid state NMR, magic angle spinning (MAS), temperature measurement
460-463
Sarkar, Riddhiman
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Concistre, Maria
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Johannessen, Ole G.
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Beckett, Peter
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Denning, Mark
591eff44-0b90-4a4c-9cca-70d910757066
Carravetta, Marina
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al-Mosawi, Maitham
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Beduz, Carlo
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Yang, Yifeng
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Levitt, Malcolm H.
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October 2011
Sarkar, Riddhiman
cb20a1ae-e7a5-4ad8-a4ce-4fb1c25515ec
Concistre, Maria
ec95c9d4-ecb8-4c28-a464-8c3adba9e86d
Johannessen, Ole G.
799ccc8c-a2e7-4305-a03a-2dc9f42564ef
Beckett, Peter
3cf98d9e-94c9-41c7-a54e-f8519accb7df
Denning, Mark
591eff44-0b90-4a4c-9cca-70d910757066
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
al-Mosawi, Maitham
1176fc20-4f87-493c-8543-b4911f754ece
Beduz, Carlo
2cbc6ece-3e8b-454b-86d6-3960596bd234
Yang, Yifeng
4cac858a-e0c0-4174-a839-05ca394fc51f
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
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), .
(doi:10.1016/j.jmr.2011.08.021).
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
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Date deposited: 20 Apr 2012 10:43
Last modified: 15 Mar 2024 03:32
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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
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