Extremely low-frequency spectroscopy in low-field nuclear magnetic resonance
Extremely low-frequency spectroscopy in low-field nuclear magnetic resonance
We demonstrate a new phenomenon in nuclear magnetic resonance spectroscopy, in which nuclear spin transitions are induced by radio frequency irradiation at extremely low frequencies (of the order of a few Hz). Slow Rabi oscillations are observed between spin states of different exchange symmetry. These “forbidden” transitions are rendered weakly allowed by differential electronic shielding effects on the radio frequency field. We generate coherence between the singlet and triplet states of 15N-labeled nitrous oxide in solution, and estimate the scalar coupling between the two 15N nuclei with a precision of a few mHz.
083002-[4pp]
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
20 August 2009
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Pileio, Giuseppe, Carravetta, Marina and Levitt, Malcolm H.
(2009)
Extremely low-frequency spectroscopy in low-field nuclear magnetic resonance.
Physical Review Letters, 103 (8), .
(doi:10.1103/PhysRevLett.103.083002).
Abstract
We demonstrate a new phenomenon in nuclear magnetic resonance spectroscopy, in which nuclear spin transitions are induced by radio frequency irradiation at extremely low frequencies (of the order of a few Hz). Slow Rabi oscillations are observed between spin states of different exchange symmetry. These “forbidden” transitions are rendered weakly allowed by differential electronic shielding effects on the radio frequency field. We generate coherence between the singlet and triplet states of 15N-labeled nitrous oxide in solution, and estimate the scalar coupling between the two 15N nuclei with a precision of a few mHz.
Text
__soton.ac.uk_ude_PersonalFiles_Users_jks1m11_mydocuments_Chemistry_REF papers_In progress_Carravetta_singlet cover + article.pdf
- Other
More information
Published date: 20 August 2009
Organisations:
Chemistry
Identifiers
Local EPrints ID: 145537
URI: http://eprints.soton.ac.uk/id/eprint/145537
PURE UUID: 5abee531-89cd-499e-9cab-1fe052bd1014
Catalogue record
Date deposited: 19 Apr 2010 10:25
Last modified: 14 Mar 2024 02:50
Export record
Altmetrics
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
