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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 (2022)
Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments.
In: The Journal of Chemical Physics, 2017, 146 (11)
doi: 10.26083/tuprints-00019736
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2017
Publisher: AIP Publishing
Journal or Publication Title: The Journal of Chemical Physics
Volume of the journal: 146
Issue Number: 11
Collation: 13 Seiten
DOI: 10.26083/tuprints-00019736
Corresponding Links:
Origin: Secondary publication service
Abstract:

Time 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.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-197363
Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry > Eduard Zintl-Institut > Physical Chemistry
Date Deposited: 11 Jan 2022 14:46
Last Modified: 16 Mar 2023 11:18
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19736
PPN: 505941198
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