dc.contributor.author
Pravdivtsev, Andrey N.
dc.contributor.author
Yurkovskaya, Alexandra V.
dc.contributor.author
Lukzen, Nikita N.
dc.contributor.author
Vieth, Hans-Martin
dc.contributor.author
Ivanov, Konstantin L.
dc.date.accessioned
2018-06-08T03:04:05Z
dc.date.available
2014-10-17T07:55:38.367Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/14440
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-18634
dc.description.abstract
A method of transferring hyperpolarization among scalar-coupled nuclear spins
is proposed, which is based on spin mixing at energy Level Anti-Crossing (LAC)
regions. To fulfill LAC conditions a resonant RF-field was applied with
properly set frequency and amplitude. In this situation LACs occur between the
nuclear spin levels in the rotating doubly tilted reference frame. The
validity of the approach is demonstrated by taking as an example the transfer
of para-hydrogen induced polarization in a symmetric molecule, whose coupled
spin network can be modeled as a four-spin AA′MM′-system with two pairs of
‘isochronous’ spins. For this spin system LAC positions have been identified;
rules for the sign of spin polarization have been established. The dependence
of the polarization transfer efficiency on the RF-field parameters and on the
time profile of switching off the RF-field has been studied in detail;
experimental results are in excellent agreement with the theory developed. In
general, exploiting LACs in the rotating doubly tilted frame is a powerful
tool for manipulating hyperpolarization in multispin systems.
en
dc.rights.uri
http://pubs.rsc.org/en/content/data/author-deposition?_ga=1.119620360.1441559132.1413530403
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie
dc.title
Exploiting Level Anti-Crossings (LACs) in the rotating frame for transferring
spin hyperpolarization
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Phys. Chem. Chem. Phys. - (2014),16, S. 18707-18719
dcterms.bibliographicCitation.doi
10.1039/C4CP01445F
dcterms.bibliographicCitation.url
http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/C4CP01445F#!divAbstract
refubium.affiliation
Biologie, Chemie, Pharmazie
de
refubium.mycore.fudocsId
FUDOCS_document_000000021162
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000004060
dcterms.accessRights.openaire
open access