Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields
Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields
Low-field nuclear spin singlet states may be used to store nuclear spin order in a room temperature liquid for a time much longer than the spin-lattice relaxation time constant T-1. The low-field nuclear spin singlets are unaffected by intramolecular dipole-dipole relaxation, which is generally the predominant relaxation mechanism. We demonstrate storage of nuclear spin order for more than 10 times longer than the measured value of T-1. This phenomenon may facilitate the development of nuclear spin hyperpolarization methods and may allow the study of motional processes which occur too slowly for existing NMR techniques. This is the first time that the memory of nuclear spins has been extended well beyond the T-1 limit in a system lacking intrinsic magnetic equivalence.
decoherence-free subspaces, quantum information, nmr-spectroscopy, para-hydrogen, resonance, subsystems, polarization, computation, alignment
153003-[4pp]
Carravetta, M.
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Johannessen, O.G.
799ccc8c-a2e7-4305-a03a-2dc9f42564ef
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
14 April 2004
Carravetta, M.
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Johannessen, O.G.
799ccc8c-a2e7-4305-a03a-2dc9f42564ef
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Carravetta, M., Johannessen, O.G. and Levitt, M.H.
(2004)
Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields.
Physical Review Letters, 92 (15), .
(doi:10.1103/PhysRevLett.92.153003).
Abstract
Low-field nuclear spin singlet states may be used to store nuclear spin order in a room temperature liquid for a time much longer than the spin-lattice relaxation time constant T-1. The low-field nuclear spin singlets are unaffected by intramolecular dipole-dipole relaxation, which is generally the predominant relaxation mechanism. We demonstrate storage of nuclear spin order for more than 10 times longer than the measured value of T-1. This phenomenon may facilitate the development of nuclear spin hyperpolarization methods and may allow the study of motional processes which occur too slowly for existing NMR techniques. This is the first time that the memory of nuclear spins has been extended well beyond the T-1 limit in a system lacking intrinsic magnetic equivalence.
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MC_SingletStorage_reprint.pdf
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Published date: 14 April 2004
Additional Information:
Article number: 153003
Keywords:
decoherence-free subspaces, quantum information, nmr-spectroscopy, para-hydrogen, resonance, subsystems, polarization, computation, alignment
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Local EPrints ID: 20158
URI: http://eprints.soton.ac.uk/id/eprint/20158
ISSN: 0031-9007
PURE UUID: 39eefa29-8863-4a39-b415-5a9066c9efcc
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Date deposited: 22 Feb 2006
Last modified: 16 Mar 2024 03:29
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Author:
O.G. Johannessen
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