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Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments
Buntkowsky, Gerd ;  Ivanov, Konstantin L. ;  Zimmermann, Herbert ;  Vieth, Hans-Martin

HaupttitelCoherent manipulation of non-thermal spin order in optical nuclear polarization experiments
AutorBuntkowsky, Gerd
AutorIvanov, Konstantin L.
AutorZimmermann, Herbert
AutorVieth, Hans-Martin
Seitenzahl14 S.
Freie SchlagwörterPolarization; Nuclear spin; Protons; Nuclear magnetic resonance; Hyperfine structure
DDC610 Medizin und Gesundheit
Auch erschienen inJournal of Chemical Physics. - 146 (2017), 11, Artikel Nr.
ZusammenfassungTime resolved measurements of Optical Nuclear Polarization (ONP) have been performed on hyperpolarized triplet states in molecular crystals created by light excitation. Transfer of the initial electron polarization to nuclear spins has been studied in the presence of radiofrequency excitation; the experiments have been performed with different pulse sequences using different doped molecular systems. The experimental results clearly demonstrate the dominant role of coherent mechanisms of spin order transfer, which manifest themselves in well pronounced oscillations. These oscillations are of two types, precessions and nutations, having characteristic frequencies, which are the same for the different molecular systems and the pulse sequences applied. Hence, precessions and nutations constitute a general feature of polarization transfer in ONP experiments. In general, coherent manipulation of spin order transfer creates a powerful resource for improving the performance of the ONP method, which paves the way to strong signal enhancement in nuclear magnetic resonance.
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Fachbereich/EinrichtungFB Physik
Erscheinungsjahr2017
Dokumententyp/-SammlungenWissenschaftlicher Artikel
SpracheEnglisch
RechteCopyright des Verlags
Erstellt am18.05.2017 - 07:51:09
Letzte Änderung18.05.2017 - 07:56:08
 
Statische URLhttp://edocs.fu-berlin.de/docs/receive/FUDOCS_document_000000027020
DOI10.1063/1.4976990
Zugriffsstatistik
 

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